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Commit | Line | Data |
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ca73e23f | 1 | /* |
67cdbd7e | 2 | * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved. |
ca9cbd92 | 3 | * Copyright (C) 2004-2018 Red Hat, Inc. All rights reserved. |
ca73e23f | 4 | * |
6606c3ae AK |
5 | * This file is part of LVM2. |
6 | * | |
7 | * This copyrighted material is made available to anyone wishing to use, | |
8 | * modify, copy, or redistribute it subject to the terms and conditions | |
be684599 | 9 | * of the GNU Lesser General Public License v.2.1. |
6606c3ae | 10 | * |
be684599 | 11 | * You should have received a copy of the GNU Lesser General Public License |
6606c3ae | 12 | * along with this program; if not, write to the Free Software Foundation, |
fcbef05a | 13 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
ca73e23f JT |
14 | */ |
15 | ||
7f97c7ea | 16 | #include "lib/misc/lib.h" |
ca73e23f | 17 | #include "dev_manager.h" |
7f97c7ea | 18 | #include "lib/misc/lvm-string.h" |
de6c9183 | 19 | #include "fs.h" |
7f97c7ea JT |
20 | #include "lib/config/defaults.h" |
21 | #include "lib/metadata/segtype.h" | |
22 | #include "lib/display/display.h" | |
23 | #include "lib/commands/toolcontext.h" | |
24 | #include "lib/activate/targets.h" | |
25 | #include "lib/config/config.h" | |
26 | #include "lib/activate/activate.h" | |
27 | #include "lib/misc/lvm-exec.h" | |
28 | #include "lib/datastruct/str_list.h" | |
ff8aaade | 29 | #include "lib/misc/lvm-signal.h" |
ca73e23f | 30 | |
349f09e4 | 31 | #include <limits.h> |
11d2da40 | 32 | #include <dirent.h> |
ca73e23f | 33 | |
9a90f1ab | 34 | #define MAX_TARGET_PARAMSIZE 50000 |
ce7489ed | 35 | #define LVM_UDEV_NOSCAN_FLAG DM_SUBSYSTEM_UDEV_FLAG0 |
1bd57b4c | 36 | #define CRYPT_TEMP "CRYPT-TEMP" |
69321571 | 37 | #define CRYPT_SUBDEV "CRYPT-SUBDEV" |
1bd57b4c | 38 | #define STRATIS "stratis-" |
9a90f1ab | 39 | |
a69de491 | 40 | typedef enum { |
5f4b2acf | 41 | PRELOAD, |
a69de491 | 42 | ACTIVATE, |
7bb6856a | 43 | DEACTIVATE, |
a69de491 | 44 | SUSPEND, |
9cd3426d | 45 | SUSPEND_WITH_LOCKFS, |
5f4b2acf | 46 | CLEAN |
7bb6856a | 47 | } action_t; |
a69de491 | 48 | |
7cff640d | 49 | /* This list must match lib/misc/lvm-string.c:build_dm_uuid(). */ |
eae0314b | 50 | static const char * const _uuid_suffix_list[] = { "pool", "cdata", "cmeta", "cvol", "tdata", "tmeta", "vdata", "vpool", "imeta", NULL}; |
7cff640d | 51 | |
fba86dd4 ZK |
52 | struct dlid_list { |
53 | struct dm_list list; | |
54 | const char *dlid; | |
55 | const struct logical_volume *lv; | |
56 | }; | |
57 | ||
ca73e23f | 58 | struct dev_manager { |
2262b320 | 59 | struct dm_pool *mem; |
ca73e23f | 60 | |
4922197a AK |
61 | struct cmd_context *cmd; |
62 | ||
4922197a | 63 | void *target_state; |
b9e67d4f | 64 | uint32_t pvmove_mirror_count; |
eb91c4ee | 65 | int flush_required; |
9a060948 | 66 | int activation; /* building activation tree */ |
a900d150 | 67 | int suspend; /* building suspend tree */ |
fba86dd4 | 68 | unsigned track_pending_delete; |
df390f17 | 69 | unsigned track_pvmove_deps; |
a9953411 | 70 | |
528695ec | 71 | const char *vg_name; |
ca73e23f JT |
72 | }; |
73 | ||
5f4b2acf | 74 | struct lv_layer { |
84cdf85b | 75 | const struct logical_volume *lv; |
5f4b2acf | 76 | const char *old_name; |
eb3597ac | 77 | int visible_component; |
5f4b2acf | 78 | }; |
0fe3a2c5 | 79 | |
a6fdb9d9 | 80 | int read_only_lv(const struct logical_volume *lv, const struct lv_activate_opts *laopts, const char *layer) |
5f4b2acf | 81 | { |
a6fdb9d9 ZK |
82 | if (layer && lv_is_cow(lv)) |
83 | return 0; /* Keep snapshot's COW volume writable */ | |
84 | ||
0646fd46 HM |
85 | if (lv_is_raid_image(lv) || lv_is_raid_metadata(lv)) |
86 | return 0; /* Keep RAID SubLvs writable */ | |
87 | ||
66f69e76 | 88 | if (!layer) { |
caff31df | 89 | if (lv_is_thin_pool(lv) || lv_is_vdo_pool(lv)) |
66f69e76 ZK |
90 | return 1; |
91 | } | |
92 | ||
f0f42483 | 93 | return (laopts->read_only || !(lv->status & LVM_WRITE)); |
5f4b2acf AK |
94 | } |
95 | ||
fc28b60f JT |
96 | /* |
97 | * Low level device-layer operations. | |
5163b8f6 ZK |
98 | * |
99 | * Unless task is DM_DEVICE_TARGET_MSG, also calls dm_task_run() | |
fc28b60f | 100 | */ |
5163b8f6 ZK |
101 | static struct dm_task *_setup_task_run(int task, struct dm_info *info, |
102 | const char *name, const char *uuid, | |
103 | uint32_t *event_nr, | |
104 | uint32_t major, uint32_t minor, | |
105 | int with_open_count, | |
106 | int with_flush, | |
107 | int query_inactive) | |
fc28b60f | 108 | { |
6ffb150f ZK |
109 | char vsn[80]; |
110 | unsigned maj, min; | |
fc28b60f JT |
111 | struct dm_task *dmt; |
112 | ||
c51b9fff AK |
113 | if (!(dmt = dm_task_create(task))) |
114 | return_NULL; | |
fc28b60f | 115 | |
006e5fa0 ZK |
116 | if (name && !dm_task_set_name(dmt, name)) |
117 | goto_out; | |
e04c5198 | 118 | |
006e5fa0 ZK |
119 | if (uuid && *uuid && !dm_task_set_uuid(dmt, uuid)) |
120 | goto_out; | |
e04c5198 | 121 | |
006e5fa0 ZK |
122 | if (event_nr && !dm_task_set_event_nr(dmt, *event_nr)) |
123 | goto_out; | |
10b29b8d | 124 | |
006e5fa0 ZK |
125 | if (major && !dm_task_set_major_minor(dmt, major, minor, 1)) |
126 | goto_out; | |
0c8bdaf3 | 127 | |
2243718f AK |
128 | if (activation_checks() && !dm_task_enable_checks(dmt)) |
129 | goto_out; | |
13e6369d | 130 | |
5163b8f6 ZK |
131 | if (query_inactive && !dm_task_query_inactive_table(dmt)) { |
132 | log_error("Failed to set query_inactive_table."); | |
133 | goto out; | |
134 | } | |
135 | ||
13e6369d ZK |
136 | if (!with_open_count && !dm_task_no_open_count(dmt)) |
137 | log_warn("WARNING: Failed to disable open_count."); | |
138 | ||
a4f8d116 ZK |
139 | if (!with_flush && !dm_task_no_flush(dmt)) |
140 | log_warn("WARNING: Failed to set no_flush."); | |
141 | ||
0d67bc96 ZK |
142 | switch (task) { |
143 | case DM_DEVICE_TARGET_MSG: | |
5163b8f6 | 144 | return dmt; /* TARGET_MSG needs more local tweaking before task_run() */ |
0d67bc96 | 145 | case DM_DEVICE_LIST: |
6ffb150f ZK |
146 | /* Use 'newuuid' only with DM version that supports it */ |
147 | if (driver_version(vsn, sizeof(vsn)) && | |
148 | (sscanf(vsn, "%u.%u", &maj, &min) == 2) && | |
149 | (maj == 4 ? min >= 19 : maj > 4) && | |
150 | !dm_task_set_newuuid(dmt, " ")) // new uuid has no meaning here | |
0d67bc96 ZK |
151 | log_warn("WARNING: Failed to query uuid with LIST."); |
152 | break; | |
153 | default: | |
154 | break; | |
155 | } | |
5163b8f6 ZK |
156 | |
157 | if (!dm_task_run(dmt)) | |
158 | goto_out; | |
159 | ||
160 | if (info && !dm_task_get_info(dmt, info)) | |
161 | goto_out; | |
162 | ||
fc28b60f | 163 | return dmt; |
5163b8f6 ZK |
164 | |
165 | out: | |
006e5fa0 | 166 | dm_task_destroy(dmt); |
81ef4eb4 | 167 | |
006e5fa0 | 168 | return NULL; |
fc28b60f JT |
169 | } |
170 | ||
dda85902 ZK |
171 | /* Read info from DM VDO 'stats' message */ |
172 | static int _vdo_pool_message_stats(struct dm_pool *mem, | |
173 | const struct logical_volume *lv, | |
174 | struct lv_status_vdo *status) | |
175 | { | |
176 | const char *response; | |
177 | const char *dlid; | |
178 | struct dm_task *dmt = NULL; | |
179 | int r = 0; | |
180 | unsigned i; | |
181 | const char *p; | |
182 | struct vdo_msg_elem { | |
183 | const char *name; | |
184 | uint64_t *val; | |
185 | } const vme[] = { /* list of properties lvm2 wants to parse */ | |
186 | { "dataBlocksUsed", &status->data_blocks_used }, | |
187 | { "logicalBlocksUsed", &status->logical_blocks_used } | |
188 | }; | |
189 | ||
190 | for (i = 0; i < DM_ARRAY_SIZE(vme); ++i) | |
191 | *vme[i].val = ULLONG_MAX; | |
192 | ||
193 | if (!(dlid = build_dm_uuid(mem, lv, lv_layer(lv)))) | |
194 | return_0; | |
195 | ||
196 | if (!(dmt = _setup_task_run(DM_DEVICE_TARGET_MSG, NULL, NULL, dlid, 0, 0, 0, 0, 0, 0))) | |
197 | return_0; | |
198 | ||
199 | if (!dm_task_set_message(dmt, "stats")) | |
200 | goto_out; | |
201 | ||
202 | if (!dm_task_run(dmt)) | |
203 | goto_out; | |
204 | ||
205 | log_debug_activation("Checking VDO pool stats message for LV %s.", | |
206 | display_lvname(lv)); | |
207 | ||
208 | if ((response = dm_task_get_message_response(dmt))) { | |
209 | for (i = 0; i < DM_ARRAY_SIZE(vme); ++i) { | |
210 | errno = 0; | |
211 | if (!(p = strstr(response, vme[i].name)) || | |
212 | !(p = strchr(p, ':')) || | |
213 | ((*vme[i].val = strtoul(p + 1, NULL, 10)) == ULLONG_MAX) || errno) { | |
214 | log_debug("Cannot parse %s in VDO DM stats message.", vme[i].name); | |
215 | *vme[i].val = ULLONG_MAX; | |
216 | goto out; | |
217 | } | |
218 | if (*vme[i].val != ULLONG_MAX) | |
219 | log_debug("VDO property %s = " FMTu64, vme[i].name, *vme[i].val); | |
220 | } | |
221 | } | |
222 | ||
223 | r = 1; | |
224 | out: | |
225 | dm_task_destroy(dmt); | |
226 | ||
227 | return r; | |
228 | } | |
229 | ||
a2c1024f PR |
230 | static int _get_segment_status_from_target_params(const char *target_name, |
231 | const char *params, | |
e6f735d4 | 232 | const struct dm_info *dminfo, |
a2c1024f PR |
233 | struct lv_seg_status *seg_status) |
234 | { | |
ed93f097 ZK |
235 | const struct lv_segment *seg = seg_status->seg; |
236 | const struct segment_type *segtype = seg->segtype; | |
a2c1024f | 237 | |
4a4b22e1 ZK |
238 | seg_status->type = SEG_STATUS_UNKNOWN; /* Parsing failed */ |
239 | ||
ed93f097 ZK |
240 | /* Switch to snapshot segtype status logic for merging origin */ |
241 | /* This is 'dynamic' decision, both states are valid */ | |
242 | if (lv_is_merging_origin(seg->lv)) { | |
243 | if (!strcmp(target_name, TARGET_NAME_SNAPSHOT_ORIGIN)) { | |
244 | seg_status->type = SEG_STATUS_NONE; | |
245 | return 1; /* Merge has not yet started */ | |
246 | } | |
247 | if (!strcmp(target_name, TARGET_NAME_SNAPSHOT_MERGE) && | |
248 | !(segtype = get_segtype_from_string(seg->lv->vg->cmd, TARGET_NAME_SNAPSHOT))) | |
249 | return_0; | |
250 | /* Merging, parse 'snapshot' status of merge progress */ | |
251 | } | |
252 | ||
4a4b22e1 ZK |
253 | if (!params) { |
254 | log_warn("WARNING: Cannot find matching %s segment for %s.", | |
ed93f097 | 255 | segtype->name, display_lvname(seg_status->seg->lv)); |
4a4b22e1 ZK |
256 | return 0; |
257 | } | |
f7f39566 | 258 | |
ed93f097 | 259 | /* Validate target_name segtype from DM table with lvm2 metadata segtype */ |
0c62ae3f ZK |
260 | if (!lv_is_locked(seg->lv) && |
261 | strcmp(segtype->name, target_name) && | |
ed93f097 ZK |
262 | /* If kernel's type isn't an exact match is it compatible? */ |
263 | (!segtype->ops->target_status_compatible || | |
264 | !segtype->ops->target_status_compatible(target_name))) { | |
c2679f76 | 265 | log_warn("WARNING: Detected %s segment type does not match expected type %s for %s.", |
ed93f097 ZK |
266 | target_name, segtype->name, display_lvname(seg_status->seg->lv)); |
267 | return 0; | |
a2c1024f PR |
268 | } |
269 | ||
ed93f097 | 270 | /* TODO: move into segtype method */ |
39a97d86 | 271 | if (segtype_is_cache(segtype)) { |
b3a348c0 ZK |
272 | if (!dm_get_status_cache(seg_status->mem, params, &(seg_status->cache))) |
273 | return_0; | |
d0f26440 | 274 | seg_status->type = SEG_STATUS_CACHE; |
39a97d86 | 275 | } else if (segtype_is_raid(segtype)) { |
b3a348c0 | 276 | if (!dm_get_status_raid(seg_status->mem, params, &seg_status->raid)) |
d0f26440 ZK |
277 | return_0; |
278 | seg_status->type = SEG_STATUS_RAID; | |
39a97d86 | 279 | } else if (segtype_is_thin_volume(segtype)) { |
b3a348c0 | 280 | if (!dm_get_status_thin(seg_status->mem, params, &seg_status->thin)) |
d0f26440 ZK |
281 | return_0; |
282 | seg_status->type = SEG_STATUS_THIN; | |
39a97d86 | 283 | } else if (segtype_is_thin_pool(segtype)) { |
b3a348c0 | 284 | if (!dm_get_status_thin_pool(seg_status->mem, params, &seg_status->thin_pool)) |
d0f26440 ZK |
285 | return_0; |
286 | seg_status->type = SEG_STATUS_THIN_POOL; | |
39a97d86 | 287 | } else if (segtype_is_snapshot(segtype)) { |
b3a348c0 | 288 | if (!dm_get_status_snapshot(seg_status->mem, params, &seg_status->snapshot)) |
d0f26440 | 289 | return_0; |
a2c1024f | 290 | seg_status->type = SEG_STATUS_SNAPSHOT; |
0dafd159 | 291 | } else if (segtype_is_vdo_pool(segtype)) { |
dda85902 ZK |
292 | if (!_vdo_pool_message_stats(seg_status->mem, seg->lv, &seg_status->vdo_pool)) |
293 | stack; | |
e6f735d4 | 294 | if (!parse_vdo_pool_status(seg_status->mem, seg->lv, params, dminfo, &seg_status->vdo_pool)) |
0dafd159 ZK |
295 | return_0; |
296 | seg_status->type = SEG_STATUS_VDO_POOL; | |
3ae55695 DT |
297 | } else if (segtype_is_writecache(segtype)) { |
298 | if (!dm_get_status_writecache(seg_status->mem, params, &(seg_status->writecache))) | |
299 | return_0; | |
300 | seg_status->type = SEG_STATUS_WRITECACHE; | |
d9e8895a DT |
301 | } else if (segtype_is_integrity(segtype)) { |
302 | if (!dm_get_status_integrity(seg_status->mem, params, &(seg_status->integrity))) | |
303 | return_0; | |
304 | seg_status->type = SEG_STATUS_INTEGRITY; | |
4a4b22e1 | 305 | } else |
ed93f097 ZK |
306 | /* |
307 | * TODO: Add support for other segment types too! | |
308 | * Status not supported | |
309 | */ | |
4a4b22e1 | 310 | seg_status->type = SEG_STATUS_NONE; |
a2c1024f PR |
311 | |
312 | return 1; | |
313 | } | |
314 | ||
315 | typedef enum { | |
316 | INFO, /* DM_DEVICE_INFO ioctl */ | |
317 | STATUS, /* DM_DEVICE_STATUS ioctl */ | |
a2c1024f PR |
318 | } info_type_t; |
319 | ||
e2354ea3 HM |
320 | /* Return length of segment depending on type and reshape_len */ |
321 | static uint32_t _seg_len(const struct lv_segment *seg) | |
322 | { | |
323 | uint32_t reshape_len = seg_is_raid(seg) ? ((seg->area_count - seg->segtype->parity_devs) * seg->reshape_len) : 0; | |
324 | ||
325 | return seg->len - reshape_len; | |
326 | } | |
327 | ||
034931f6 ZK |
328 | static int _info_run(const char *dlid, struct dm_info *dminfo, |
329 | uint32_t *read_ahead, | |
a2c1024f | 330 | struct lv_seg_status *seg_status, |
80b2de9e | 331 | const char *name_check, |
a2c1024f PR |
332 | int with_open_count, int with_read_ahead, |
333 | uint32_t major, uint32_t minor) | |
14a9cda6 AK |
334 | { |
335 | int r = 0; | |
336 | struct dm_task *dmt; | |
8c0388e4 | 337 | int dmtask; |
034931f6 | 338 | int with_flush; /* TODO: arg for _info_run */ |
a2c1024f | 339 | void *target = NULL; |
2e79b005 | 340 | uint64_t target_start, target_length, start, extent_size, length, length_crop = 0; |
5ba2d58d | 341 | char *target_name, *target_params; |
8679d459 | 342 | const char *devname; |
a2c1024f | 343 | |
034931f6 ZK |
344 | if (seg_status) { |
345 | dmtask = DM_DEVICE_STATUS; | |
346 | with_flush = 0; | |
347 | } else { | |
348 | dmtask = DM_DEVICE_INFO; | |
349 | with_flush = 1; /* doesn't really matter */ | |
a2c1024f | 350 | } |
14a9cda6 | 351 | |
034931f6 ZK |
352 | if (!(dmt = _setup_task_run(dmtask, dminfo, NULL, dlid, 0, major, minor, |
353 | with_open_count, with_flush, 0))) | |
c51b9fff | 354 | return_0; |
14a9cda6 | 355 | |
80b2de9e | 356 | if (name_check && dminfo->exists && |
8679d459 ZK |
357 | (devname = dm_task_get_name(dmt)) && |
358 | (strcmp(name_check, devname) != 0)) | |
80b2de9e ZK |
359 | dminfo->exists = 0; /* mismatching name -> device does not exist */ |
360 | ||
43db8f8d | 361 | if (with_read_ahead && read_ahead && dminfo->exists) { |
fd0af4bd AK |
362 | if (!dm_task_get_read_ahead(dmt, read_ahead)) |
363 | goto_out; | |
364 | } else if (read_ahead) | |
69506f1d | 365 | *read_ahead = DM_READ_AHEAD_NONE; |
a6b22cf3 | 366 | |
5ba2d58d | 367 | /* Query status only for active device */ |
034931f6 | 368 | if (seg_status && dminfo->exists) { |
2e79b005 ZK |
369 | extent_size = length = seg_status->seg->lv->vg->extent_size; |
370 | start = extent_size * seg_status->seg->le; | |
e2354ea3 | 371 | length *= _seg_len(seg_status->seg); |
5ba2d58d | 372 | |
10953229 ZK |
373 | /* Uses max DM_THIN_MAX_METADATA_SIZE sectors for metadata device */ |
374 | if (lv_is_thin_pool_metadata(seg_status->seg->lv) && | |
375 | (length > DM_THIN_MAX_METADATA_SIZE)) | |
b4212be2 | 376 | length_crop = DM_THIN_MAX_METADATA_SIZE; |
10953229 | 377 | |
a8f84f78 ZK |
378 | /* Uses virtual size with headers for VDO pool device */ |
379 | if (lv_is_vdo_pool(seg_status->seg->lv)) | |
380 | length = get_vdo_pool_virtual_size(seg_status->seg); | |
381 | ||
d9e8895a DT |
382 | if (lv_is_integrity(seg_status->seg->lv)) |
383 | length = seg_status->seg->integrity_data_sectors; | |
384 | ||
a2c1024f PR |
385 | do { |
386 | target = dm_get_next_target(dmt, target, &target_start, | |
387 | &target_length, &target_name, &target_params); | |
5ba2d58d | 388 | |
b4212be2 ZK |
389 | if ((start == target_start) && |
390 | ((length == target_length) || | |
2e79b005 ZK |
391 | ((lv_is_vdo_pool(seg_status->seg->lv)) && /* should fit within extent size */ |
392 | (length < target_length) && ((length + extent_size) > target_length)) || | |
b4212be2 | 393 | (length_crop && (length_crop == target_length)))) |
5ba2d58d ZK |
394 | break; /* Keep target_params when matching segment is found */ |
395 | ||
396 | target_params = NULL; /* Marking this target_params unusable */ | |
a2c1024f PR |
397 | } while (target); |
398 | ||
ab6f4649 | 399 | if (!target_name || |
e6f735d4 | 400 | !_get_segment_status_from_target_params(target_name, target_params, dminfo, seg_status)) |
5ba2d58d | 401 | stack; |
a2c1024f PR |
402 | } |
403 | ||
14a9cda6 AK |
404 | r = 1; |
405 | ||
406 | out: | |
407 | dm_task_destroy(dmt); | |
81ef4eb4 | 408 | |
14a9cda6 AK |
409 | return r; |
410 | } | |
fc28b60f | 411 | |
9fd7ac7d JB |
412 | /* |
413 | * ignore_blocked_mirror_devices | |
414 | * @dev | |
415 | * @start | |
416 | * @length | |
417 | * @mirror_status_str | |
418 | * | |
419 | * When a DM 'mirror' target is created with 'block_on_error' or | |
420 | * 'handle_errors', it will block I/O if there is a device failure | |
421 | * until the mirror is reconfigured. Thus, LVM should never attempt | |
422 | * to read labels from a mirror that has a failed device. (LVM | |
423 | * commands are issued to repair mirrors; and if LVM is blocked | |
424 | * attempting to read a mirror, a circular dependency would be created.) | |
425 | * | |
426 | * This function is a slimmed-down version of lib/mirror/mirrored.c: | |
b248ba0a | 427 | * _mirrored_transient_status(). |
9fd7ac7d JB |
428 | * |
429 | * If a failed device is detected in the status string, then it must be | |
430 | * determined if 'block_on_error' or 'handle_errors' was used when | |
431 | * creating the mirror. This info can only be determined from the mirror | |
432 | * table. The 'dev', 'start', 'length' trio allow us to correlate the | |
433 | * 'mirror_status_str' with the correct device table in order to check | |
434 | * for blocking. | |
435 | * | |
436 | * Returns: 1 if mirror should be ignored, 0 if safe to use | |
437 | */ | |
65236ee7 ZK |
438 | static int _ignore_blocked_mirror_devices(struct cmd_context *cmd, |
439 | struct device *dev, | |
9fd7ac7d JB |
440 | uint64_t start, uint64_t length, |
441 | char *mirror_status_str) | |
442 | { | |
86e7894e ZK |
443 | struct dm_pool *mem; |
444 | struct dm_status_mirror *sm; | |
9fd7ac7d | 445 | unsigned i, check_for_blocking = 0; |
9fd7ac7d | 446 | uint64_t s,l; |
c363c74a | 447 | char *p, *params, *target_type = NULL; |
9fd7ac7d | 448 | void *next = NULL; |
ec49f07b ZK |
449 | struct dm_task *dmt = NULL; |
450 | int r = 0; | |
92fd2cb4 | 451 | char fake_dev_name[16]; |
038760da | 452 | struct device fake_dev = { .fd = 0 }; |
92fd2cb4 | 453 | struct dm_str_list *alias; |
9fd7ac7d | 454 | |
86e7894e | 455 | if (!(mem = dm_pool_create("blocked_mirrors", 128))) |
ec49f07b | 456 | return_0; |
9fd7ac7d | 457 | |
86e7894e ZK |
458 | if (!dm_get_status_mirror(mem, mirror_status_str, &sm)) |
459 | goto_out; | |
460 | ||
461 | for (i = 0; i < sm->dev_count; ++i) | |
462 | if (sm->devs[i].health != DM_STATUS_MIRROR_ALIVE) { | |
81ef4eb4 | 463 | log_debug_activation("%s: Mirror image %d marked as failed.", |
06abb2dd | 464 | dev_name(dev), i); |
9fd7ac7d JB |
465 | check_for_blocking = 1; |
466 | } | |
467 | ||
86e7894e ZK |
468 | if (!check_for_blocking && sm->log_count) { |
469 | if (sm->logs[0].health != DM_STATUS_MIRROR_ALIVE) { | |
81ef4eb4 | 470 | log_debug_activation("%s: Mirror log device marked as failed.", |
06abb2dd | 471 | dev_name(dev)); |
b248ba0a JB |
472 | check_for_blocking = 1; |
473 | } else { | |
92fd2cb4 DT |
474 | dev_init(&fake_dev); |
475 | if (dm_snprintf(fake_dev_name, sizeof(fake_dev_name), "%u:%u", | |
86e7894e | 476 | sm->logs[0].major, sm->logs[0].minor) < 0) |
b248ba0a JB |
477 | goto_out; |
478 | ||
92fd2cb4 DT |
479 | if (!(alias = dm_pool_zalloc(mem, sizeof(*alias)))) |
480 | goto_out; | |
481 | if (!(alias->str = dm_pool_strdup(mem, fake_dev_name))) | |
b248ba0a | 482 | goto_out; |
92fd2cb4 DT |
483 | dm_list_add(&fake_dev.aliases, &alias->list); |
484 | fake_dev.flags = DEV_REGULAR; | |
485 | fake_dev.dev = MKDEV(sm->logs[0].major, sm->logs[0].minor); | |
b248ba0a | 486 | |
92fd2cb4 | 487 | if (dm_device_is_usable(cmd, &fake_dev, (struct dev_usable_check_params) |
24943fe9 DT |
488 | { .check_empty = 1, |
489 | .check_blocked = 1, | |
490 | .check_suspended = ignore_suspended_devices(), | |
491 | .check_error_target = 1, | |
492 | .check_reserved = 0 }, NULL)) | |
8b16efd1 ZK |
493 | goto out; /* safe to use */ |
494 | stack; | |
b248ba0a JB |
495 | } |
496 | } | |
497 | ||
ec49f07b ZK |
498 | if (!check_for_blocking) { |
499 | r = 1; | |
500 | goto out; | |
501 | } | |
9fd7ac7d JB |
502 | |
503 | /* | |
504 | * We avoid another system call if we can, but if a device is | |
505 | * dead, we have no choice but to look up the table too. | |
506 | */ | |
5163b8f6 ZK |
507 | if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, NULL, NULL, NULL, NULL, |
508 | MAJOR(dev->dev), MINOR(dev->dev), 0, 1, 0))) | |
9fd7ac7d JB |
509 | goto_out; |
510 | ||
511 | do { | |
512 | next = dm_get_next_target(dmt, next, &s, &l, | |
513 | &target_type, ¶ms); | |
68955a81 ZK |
514 | if ((s == start) && (l == length) && |
515 | target_type && params) { | |
1216efdf | 516 | if (strcmp(target_type, TARGET_NAME_MIRROR)) |
9fd7ac7d JB |
517 | goto_out; |
518 | ||
c363c74a JB |
519 | if (((p = strstr(params, " block_on_error")) && |
520 | (p[15] == '\0' || p[15] == ' ')) || | |
521 | ((p = strstr(params, " handle_errors")) && | |
522 | (p[14] == '\0' || p[14] == ' '))) { | |
81ef4eb4 | 523 | log_debug_activation("%s: I/O blocked to mirror device.", |
06abb2dd | 524 | dev_name(dev)); |
ec49f07b | 525 | goto out; |
9fd7ac7d JB |
526 | } |
527 | } | |
528 | } while (next); | |
9fd7ac7d | 529 | |
ec49f07b | 530 | r = 1; |
9fd7ac7d | 531 | out: |
ec49f07b ZK |
532 | if (dmt) |
533 | dm_task_destroy(dmt); | |
86e7894e ZK |
534 | |
535 | dm_pool_destroy(mem); | |
ec49f07b ZK |
536 | |
537 | return r; | |
9fd7ac7d JB |
538 | } |
539 | ||
1e6a926e PR |
540 | static int _device_is_suspended(int major, int minor) |
541 | { | |
542 | struct dm_task *dmt; | |
543 | struct dm_info info; | |
1e6a926e | 544 | |
5163b8f6 ZK |
545 | if (!(dmt = _setup_task_run(DM_DEVICE_INFO, &info, |
546 | NULL, NULL, NULL, | |
547 | major, minor, 0, 0, 0))) | |
99e96f3c | 548 | return_0; |
1e6a926e | 549 | |
1e6a926e | 550 | dm_task_destroy(dmt); |
5163b8f6 ZK |
551 | |
552 | return (info.exists && info.suspended); | |
1e6a926e PR |
553 | } |
554 | ||
555 | static int _ignore_suspended_snapshot_component(struct device *dev) | |
556 | { | |
557 | struct dm_task *dmt; | |
558 | void *next = NULL; | |
559 | char *params, *target_type = NULL; | |
560 | uint64_t start, length; | |
561 | int major1, minor1, major2, minor2; | |
562 | int r = 0; | |
563 | ||
5163b8f6 ZK |
564 | if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, NULL, |
565 | NULL, NULL, NULL, | |
566 | MAJOR(dev->dev), MINOR(dev->dev), 0, 1, 0))) | |
99e96f3c | 567 | return_0; |
1e6a926e | 568 | |
1e6a926e PR |
569 | do { |
570 | next = dm_get_next_target(dmt, next, &start, &length, &target_type, ¶ms); | |
a8a579b1 ZK |
571 | |
572 | if (!target_type) | |
573 | continue; | |
574 | ||
575 | if (!strcmp(target_type, TARGET_NAME_SNAPSHOT)) { | |
164d7e72 | 576 | if (!params || sscanf(params, "%d:%d %d:%d", &major1, &minor1, &major2, &minor2) != 4) { |
cd56b04e ZK |
577 | log_warn("WARNING: Incorrect snapshot table found for %u:%u.", |
578 | MAJOR(dev->dev), MINOR(dev->dev)); | |
1d58074d | 579 | goto out; |
1e6a926e | 580 | } |
5577f2f4 | 581 | r = r || _device_is_suspended(major1, minor1) || _device_is_suspended(major2, minor2); |
1216efdf | 582 | } else if (!strcmp(target_type, TARGET_NAME_SNAPSHOT_ORIGIN)) { |
164d7e72 | 583 | if (!params || sscanf(params, "%d:%d", &major1, &minor1) != 2) { |
cd56b04e ZK |
584 | log_warn("WARNING: Incorrect snapshot-origin table found for %u:%u.", |
585 | MAJOR(dev->dev), MINOR(dev->dev)); | |
1d58074d | 586 | goto out; |
1e6a926e | 587 | } |
5577f2f4 | 588 | r = r || _device_is_suspended(major1, minor1); |
1e6a926e PR |
589 | } |
590 | } while (next); | |
591 | ||
592 | out: | |
593 | dm_task_destroy(dmt); | |
81ef4eb4 | 594 | |
1e6a926e PR |
595 | return r; |
596 | } | |
597 | ||
a01eb9c4 ZK |
598 | static int _ignore_unusable_thins(struct device *dev) |
599 | { | |
600 | /* TODO make function for thin testing */ | |
601 | struct dm_pool *mem; | |
602 | struct dm_status_thin_pool *status; | |
603 | struct dm_task *dmt = NULL; | |
604 | void *next = NULL; | |
605 | uint64_t start, length; | |
606 | char *target_type = NULL; | |
607 | char *params; | |
608 | int minor, major; | |
609 | int r = 0; | |
610 | ||
611 | if (!(mem = dm_pool_create("unusable_thins", 128))) | |
612 | return_0; | |
613 | ||
5163b8f6 ZK |
614 | if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, NULL, NULL, NULL, NULL, |
615 | MAJOR(dev->dev), MINOR(dev->dev), 0, 1, 0))) | |
a01eb9c4 | 616 | goto_out; |
74e704bb | 617 | |
a01eb9c4 | 618 | dm_get_next_target(dmt, next, &start, &length, &target_type, ¶ms); |
74e704bb | 619 | if (!params || sscanf(params, "%d:%d", &major, &minor) != 2) { |
cd56b04e ZK |
620 | log_warn("WARNING: Cannot get thin-pool major:minor for thin device %u:%u.", |
621 | MAJOR(dev->dev), MINOR(dev->dev)); | |
a01eb9c4 ZK |
622 | goto out; |
623 | } | |
624 | dm_task_destroy(dmt); | |
625 | ||
5163b8f6 ZK |
626 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, NULL, NULL, NULL, NULL, |
627 | major, minor, 0, 0, 0))) | |
a01eb9c4 | 628 | goto_out; |
74e704bb | 629 | |
a01eb9c4 ZK |
630 | dm_get_next_target(dmt, next, &start, &length, &target_type, ¶ms); |
631 | if (!dm_get_status_thin_pool(mem, params, &status)) | |
80c3fb78 | 632 | goto_out; |
a01eb9c4 ZK |
633 | |
634 | if (status->read_only || status->out_of_data_space) { | |
635 | log_warn("WARNING: %s: Thin's thin-pool needs inspection.", | |
636 | dev_name(dev)); | |
637 | goto out; | |
638 | } | |
639 | ||
640 | r = 1; | |
641 | out: | |
642 | if (dmt) | |
643 | dm_task_destroy(dmt); | |
644 | ||
645 | dm_pool_destroy(mem); | |
646 | ||
647 | return r; | |
648 | } | |
649 | ||
7421252e ZK |
650 | static int _ignore_invalid_snapshot(const char *params) |
651 | { | |
652 | struct dm_status_snapshot *s; | |
653 | struct dm_pool *mem; | |
0edd89fa | 654 | int r = 0; |
7421252e ZK |
655 | |
656 | if (!(mem = dm_pool_create("invalid snapshots", 128))) | |
657 | return_0; | |
658 | ||
659 | if (!dm_get_status_snapshot(mem, params, &s)) | |
0edd89fa ZK |
660 | stack; |
661 | else | |
662 | r = s->invalid; | |
663 | ||
664 | dm_pool_destroy(mem); | |
665 | ||
666 | return r; | |
667 | } | |
668 | ||
669 | static int _ignore_frozen_raid(struct device *dev, const char *params) | |
670 | { | |
671 | struct dm_status_raid *s; | |
672 | struct dm_pool *mem; | |
673 | int r = 0; | |
674 | ||
675 | if (!(mem = dm_pool_create("frozen raid", 128))) | |
7421252e ZK |
676 | return_0; |
677 | ||
0edd89fa ZK |
678 | if (!dm_get_status_raid(mem, params, &s)) |
679 | stack; | |
680 | else if (s->sync_action && !strcmp(s->sync_action, "frozen")) { | |
cd56b04e ZK |
681 | log_warn("WARNING: %s frozen raid device (%u:%u) needs inspection.", |
682 | dev_name(dev), MAJOR(dev->dev), MINOR(dev->dev)); | |
0edd89fa ZK |
683 | r = 1; |
684 | } | |
685 | ||
7421252e ZK |
686 | dm_pool_destroy(mem); |
687 | ||
688 | return r; | |
689 | } | |
690 | ||
65236ee7 ZK |
691 | static int _is_usable_uuid(const struct device *dev, const char *name, const char *uuid, int check_reserved, int check_lv, int *is_lv) |
692 | { | |
693 | char *vgname, *lvname, *layer; | |
694 | char vg_name[NAME_LEN]; | |
695 | ||
696 | if (!check_reserved && !check_lv) | |
697 | return 1; | |
698 | ||
699 | if (!strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) { /* with LVM- prefix */ | |
700 | if (check_reserved) { | |
701 | /* Check internal lvm devices */ | |
702 | if (strlen(uuid) > (sizeof(UUID_PREFIX) + 2 * ID_LEN)) { /* 68 with suffix */ | |
703 | log_debug_activation("%s: Reserved uuid %s on internal LV device %s not usable.", | |
704 | dev_name(dev), uuid, name); | |
705 | return 0; | |
706 | } | |
707 | ||
708 | /* Recognize some older reserved LVs just from the LV name (snapshot, pvmove...) */ | |
709 | vgname = vg_name; | |
f9fefaaa | 710 | if (!_dm_strncpy(vg_name, name, sizeof(vg_name)) || |
65236ee7 ZK |
711 | !dm_split_lvm_name(NULL, NULL, &vgname, &lvname, &layer)) |
712 | return_0; | |
713 | ||
714 | /* FIXME: fails to handle dev aliases i.e. /dev/dm-5, replace with UUID suffix */ | |
715 | if (lvname && (is_reserved_lvname(lvname) || *layer)) { | |
716 | log_debug_activation("%s: Reserved internal LV device %s/%s%s%s not usable.", | |
717 | dev_name(dev), vgname, lvname, *layer ? "-" : "", layer); | |
718 | return 0; | |
719 | } | |
720 | } | |
721 | ||
722 | if (check_lv) { | |
723 | /* Skip LVs */ | |
724 | if (is_lv) | |
725 | *is_lv = 1; | |
726 | return 0; | |
727 | } | |
728 | } | |
729 | ||
730 | if (check_reserved && | |
731 | (!strncmp(uuid, CRYPT_TEMP, sizeof(CRYPT_TEMP) - 1) || | |
732 | !strncmp(uuid, CRYPT_SUBDEV, sizeof(CRYPT_SUBDEV) - 1) || | |
733 | !strncmp(uuid, STRATIS, sizeof(STRATIS) - 1))) { | |
734 | /* Skip private crypto devices */ | |
735 | log_debug_activation("%s: Reserved uuid %s on %s device %s not usable.", | |
736 | dev_name(dev), uuid, | |
737 | uuid[0] == 'C' ? "crypto" : "stratis", | |
738 | name); | |
739 | return 0; | |
740 | } | |
741 | ||
742 | return 1; | |
743 | } | |
744 | ||
c95f17ea | 745 | /* |
24943fe9 | 746 | * dm_device_is_usable |
c95f17ea JB |
747 | * @dev |
748 | * @check_lv_names | |
749 | * | |
750 | * A device is considered not usable if it is: | |
751 | * 1) An empty device (no targets) | |
752 | * 2) A blocked mirror (i.e. a mirror with a failure and block_on_error set) | |
753 | * 3) ignore_suspended_devices is set and | |
754 | * a) the device is suspended | |
755 | * b) it is a snapshot origin | |
756 | * 4) an error target | |
c95f17ea JB |
757 | * 5) the LV name is a reserved name. |
758 | * | |
759 | * Returns: 1 if usable, 0 otherwise | |
760 | */ | |
24943fe9 | 761 | int dm_device_is_usable(struct cmd_context *cmd, struct device *dev, struct dev_usable_check_params check, int *is_lv) |
f247a4e7 AK |
762 | { |
763 | struct dm_task *dmt; | |
764 | struct dm_info info; | |
28e2b5b2 | 765 | const char *name, *uuid; |
ed440367 | 766 | const struct dm_active_device *dm_dev; |
67cdbd7e AK |
767 | uint64_t start, length; |
768 | char *target_type = NULL; | |
65236ee7 | 769 | char *params; |
41aec14e | 770 | void *next = NULL; |
adc23806 | 771 | int only_error_or_zero_target = 1; |
f247a4e7 AK |
772 | int r = 0; |
773 | ||
f8aa073a | 774 | if (dm_devs_cache_use() && |
ed440367 | 775 | /* With cache we can avoid status calls for unusable UUIDs */ |
ad1d6887 | 776 | (dm_dev = dm_devs_cache_get_by_devno(cmd, dev->dev)) && |
ed440367 ZK |
777 | !_is_usable_uuid(dev, dm_dev->name, dm_dev->uuid, check.check_reserved, check.check_lv, is_lv)) |
778 | return 0; | |
779 | ||
5163b8f6 ZK |
780 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, NULL, NULL, |
781 | MAJOR(dev->dev), MINOR(dev->dev), 0, 0, 0))) | |
99e96f3c | 782 | return_0; |
a09d6589 | 783 | |
f3ad0dcf | 784 | if (!info.exists) |
f247a4e7 AK |
785 | goto out; |
786 | ||
41aec14e | 787 | name = dm_task_get_name(dmt); |
28e2b5b2 | 788 | uuid = dm_task_get_uuid(dmt); |
41aec14e | 789 | |
00d8ab84 | 790 | if (check.check_empty && !info.target_count) { |
06abb2dd | 791 | log_debug_activation("%s: Empty device %s not usable.", dev_name(dev), name); |
727d065f AK |
792 | goto out; |
793 | } | |
794 | ||
00d8ab84 | 795 | if (check.check_suspended && info.suspended) { |
06abb2dd | 796 | log_debug_activation("%s: Suspended device %s not usable.", dev_name(dev), name); |
f3ad0dcf PR |
797 | goto out; |
798 | } | |
799 | ||
65236ee7 ZK |
800 | if (uuid && |
801 | !_is_usable_uuid(dev, name, uuid, check.check_reserved, check.check_lv, is_lv)) | |
802 | goto out; | |
c0f1eb5f | 803 | |
9fd7ac7d | 804 | /* FIXME Also check for mpath no paths */ |
67cdbd7e AK |
805 | do { |
806 | next = dm_get_next_target(dmt, next, &start, &length, | |
807 | &target_type, ¶ms); | |
9fd7ac7d | 808 | |
a8a579b1 ZK |
809 | if (!target_type) |
810 | continue; | |
811 | ||
812 | if (check.check_blocked && !strcmp(target_type, TARGET_NAME_MIRROR)) { | |
d5896f0a JB |
813 | if (ignore_lvm_mirrors()) { |
814 | log_debug_activation("%s: Scanning mirror devices is disabled.", dev_name(dev)); | |
815 | goto out; | |
816 | } | |
65236ee7 | 817 | if (!_ignore_blocked_mirror_devices(cmd, dev, start, |
d5896f0a JB |
818 | length, params)) { |
819 | log_debug_activation("%s: Mirror device %s not usable.", | |
820 | dev_name(dev), name); | |
821 | goto out; | |
822 | } | |
28e2b5b2 | 823 | } |
a71d6051 JEB |
824 | |
825 | /* | |
c0e17bca PR |
826 | * FIXME: Snapshot origin could be sitting on top of a mirror |
827 | * which could be blocking I/O. We should add a check for the | |
828 | * stack here and see if there's blocked mirror underneath. | |
829 | * Currently, mirrors used as origin or snapshot is not | |
830 | * supported anymore and in general using mirrors in a stack | |
831 | * is disabled by default (with a warning that if enabled, | |
832 | * it could cause various deadlocks). | |
1e6a926e PR |
833 | * Similar situation can happen with RAID devices where |
834 | * a RAID device can be snapshotted. | |
835 | * If one of the RAID legs are down and we're doing | |
836 | * lvconvert --repair, there's a time period in which | |
837 | * snapshot components are (besides other devs) suspended. | |
838 | * See also https://bugzilla.redhat.com/show_bug.cgi?id=1219222 | |
839 | * for an example where this causes problems. | |
840 | * | |
841 | * This is a quick check for now, but replace it with more | |
842 | * robust and better check that would check the stack | |
39b7d1ba | 843 | * correctly, not just snapshots but any combination possible |
1e6a926e | 844 | * in a stack - use proper dm tree to check this instead. |
a71d6051 | 845 | */ |
a8a579b1 | 846 | if (check.check_suspended && |
1216efdf | 847 | (!strcmp(target_type, TARGET_NAME_SNAPSHOT) || !strcmp(target_type, TARGET_NAME_SNAPSHOT_ORIGIN)) && |
1e6a926e PR |
848 | _ignore_suspended_snapshot_component(dev)) { |
849 | log_debug_activation("%s: %s device %s not usable.", dev_name(dev), target_type, name); | |
a71d6051 | 850 | goto out; |
1e6a926e | 851 | } |
06808d33 | 852 | |
a8a579b1 | 853 | if (!strcmp(target_type, TARGET_NAME_SNAPSHOT) && |
7421252e ZK |
854 | _ignore_invalid_snapshot(params)) { |
855 | log_debug_activation("%s: Invalid %s device %s not usable.", dev_name(dev), target_type, name); | |
856 | goto out; | |
0edd89fa ZK |
857 | } |
858 | ||
859 | if (!strncmp(target_type, TARGET_NAME_RAID, 4) && _ignore_frozen_raid(dev, params)) { | |
860 | log_debug_activation("%s: Frozen %s device %s not usable.", | |
861 | dev_name(dev), target_type, name); | |
862 | goto out; | |
7421252e ZK |
863 | } |
864 | ||
a01eb9c4 | 865 | /* TODO: extend check struct ? */ |
a8a579b1 | 866 | if (!strcmp(target_type, TARGET_NAME_THIN) && |
a01eb9c4 ZK |
867 | !_ignore_unusable_thins(dev)) { |
868 | log_debug_activation("%s: %s device %s not usable.", dev_name(dev), target_type, name); | |
869 | goto out; | |
870 | } | |
871 | ||
adc23806 ZK |
872 | if (only_error_or_zero_target && |
873 | strcmp(target_type, TARGET_NAME_ERROR) && | |
874 | strcmp(target_type, TARGET_NAME_ZERO)) | |
875 | only_error_or_zero_target = 0; | |
67cdbd7e | 876 | } while (next); |
f247a4e7 | 877 | |
adc23806 | 878 | /* Skip devices consisting entirely of error or zero targets. */ |
727d065f | 879 | /* FIXME Deal with device stacked above error targets? */ |
adc23806 | 880 | if (check.check_error_target && only_error_or_zero_target) { |
06abb2dd AK |
881 | log_debug_activation("%s: Error device %s not usable.", |
882 | dev_name(dev), name); | |
727d065f AK |
883 | goto out; |
884 | } | |
885 | ||
f247a4e7 AK |
886 | /* FIXME Also check dependencies? */ |
887 | ||
888 | r = 1; | |
889 | ||
890 | out: | |
891 | dm_task_destroy(dmt); | |
892 | return r; | |
893 | } | |
894 | ||
dac2bfe6 | 895 | /* Read UUID from a given DM device into buf_uuid */ |
990f4f7c DT |
896 | int devno_dm_uuid(struct cmd_context *cmd, int major, int minor, |
897 | char *uuid_buf, size_t uuid_buf_size) | |
dac2bfe6 ZK |
898 | { |
899 | struct dm_task *dmt; | |
900 | struct dm_info info; | |
e30bc9b1 | 901 | const struct dm_active_device *dm_dev; |
dac2bfe6 ZK |
902 | const char *uuid; |
903 | int r = 0; | |
904 | ||
07576f7e DT |
905 | if (major != cmd->dev_types->device_mapper_major) |
906 | return 0; | |
907 | ||
f8aa073a | 908 | if (dm_devs_cache_use()) { |
ad1d6887 | 909 | if ((dm_dev = dm_devs_cache_get_by_devno(cmd, MKDEV(major, minor)))) { |
e30bc9b1 | 910 | dm_strncpy(uuid_buf, dm_dev->uuid, uuid_buf_size); |
dac2bfe6 ZK |
911 | return 1; |
912 | } | |
913 | uuid_buf[0] = 0; | |
914 | return 0; | |
915 | } | |
916 | ||
917 | if (!(dmt = _setup_task_run(DM_DEVICE_INFO, &info, NULL, NULL, NULL, | |
918 | major, minor, 0, 0, 0))) | |
919 | return_0; | |
920 | ||
921 | if (info.exists && (uuid = dm_task_get_uuid(dmt))) | |
922 | r = dm_strncpy(uuid_buf, uuid, uuid_buf_size); | |
923 | ||
924 | dm_task_destroy(dmt); | |
925 | ||
926 | return r; | |
927 | } | |
928 | ||
990f4f7c DT |
929 | int dev_dm_uuid(struct cmd_context *cmd, struct device *dev, |
930 | char *uuid_buf, size_t uuid_buf_size) | |
931 | { | |
932 | return devno_dm_uuid(cmd, MAJOR(dev->dev), MINOR(dev->dev), | |
933 | uuid_buf, uuid_buf_size); | |
934 | } | |
935 | ||
f40dfb48 AK |
936 | /* |
937 | * If active LVs were activated by a version of LVM2 before 2.02.00 we must | |
938 | * perform additional checks to find them because they do not have the LVM- | |
939 | * prefix on their dm uuids. | |
940 | * As of 2.02.150, we've chosen to disable this compatibility arbitrarily if | |
941 | * we're running kernel version 3 or above. | |
942 | */ | |
943 | #define MIN_KERNEL_MAJOR 3 | |
944 | ||
945 | static int _original_uuid_format_check_required(struct cmd_context *cmd) | |
8b2108e6 | 946 | { |
f40dfb48 AK |
947 | static int _kernel_major = 0; |
948 | ||
949 | if (!_kernel_major) { | |
5cfa6cb3 ZK |
950 | if ((sscanf(cmd->kernel_vsn, "%d", &_kernel_major) == 1) && |
951 | (_kernel_major >= MIN_KERNEL_MAJOR)) | |
f40dfb48 AK |
952 | log_debug_activation("Skipping checks for old devices without " UUID_PREFIX |
953 | " dm uuid prefix (kernel vsn %d >= %d).", _kernel_major, MIN_KERNEL_MAJOR); | |
5cfa6cb3 ZK |
954 | else |
955 | _kernel_major = -1; | |
8b2108e6 ZK |
956 | } |
957 | ||
5cfa6cb3 | 958 | return (_kernel_major == -1); |
8b2108e6 ZK |
959 | } |
960 | ||
034931f6 ZK |
961 | static int _info(struct cmd_context *cmd, |
962 | const char *name, const char *dlid, | |
80b2de9e | 963 | int with_open_count, int with_read_ahead, int with_name_check, |
a2c1024f PR |
964 | struct dm_info *dminfo, uint32_t *read_ahead, |
965 | struct lv_seg_status *seg_status) | |
e04c5198 | 966 | { |
7cff640d AK |
967 | char old_style_dlid[sizeof(UUID_PREFIX) + 2 * ID_LEN]; |
968 | const char *suffix, *suffix_position; | |
80b2de9e | 969 | const char *name_check = (with_name_check) ? name : NULL; |
7cff640d | 970 | unsigned i = 0; |
b1ef9cd0 | 971 | |
034931f6 ZK |
972 | log_debug_activation("Getting device info for %s [%s].", name, dlid); |
973 | ||
7cff640d | 974 | /* Check for dlid */ |
80b2de9e | 975 | if (!_info_run(dlid, dminfo, read_ahead, seg_status, name_check, |
034931f6 ZK |
976 | with_open_count, with_read_ahead, 0, 0)) |
977 | return_0; | |
978 | ||
979 | if (dminfo->exists) | |
ab9663f3 | 980 | return 1; |
7cff640d AK |
981 | |
982 | /* Check for original version of dlid before the suffixes got added in 2.02.106 */ | |
9971459d | 983 | if ((suffix_position = strrchr(dlid, '-'))) { |
eae0314b | 984 | while ((suffix = _uuid_suffix_list[i++])) { |
7cff640d AK |
985 | if (strcmp(suffix_position + 1, suffix)) |
986 | continue; | |
987 | ||
995ff589 | 988 | dm_strncpy(old_style_dlid, dlid, sizeof(old_style_dlid)); |
034931f6 | 989 | if (!_info_run(old_style_dlid, dminfo, read_ahead, seg_status, |
80b2de9e ZK |
990 | name_check, with_open_count, with_read_ahead, |
991 | 0, 0)) | |
034931f6 ZK |
992 | return_0; |
993 | if (dminfo->exists) | |
7cff640d AK |
994 | return 1; |
995 | } | |
996 | } | |
997 | ||
f40dfb48 AK |
998 | /* Must we still check for the pre-2.02.00 dm uuid format? */ |
999 | if (!_original_uuid_format_check_required(cmd)) | |
034931f6 | 1000 | return 1; |
8b2108e6 | 1001 | |
7cff640d | 1002 | /* Check for dlid before UUID_PREFIX was added */ |
034931f6 | 1003 | if (!_info_run(dlid + sizeof(UUID_PREFIX) - 1, dminfo, read_ahead, seg_status, |
80b2de9e | 1004 | name_check, with_open_count, with_read_ahead, 0, 0)) |
034931f6 | 1005 | return_0; |
e04c5198 | 1006 | |
034931f6 | 1007 | return 1; |
e04c5198 AK |
1008 | } |
1009 | ||
cac4a974 DT |
1010 | int dev_manager_remove_dm_major_minor(uint32_t major, uint32_t minor) |
1011 | { | |
1012 | struct dm_task *dmt; | |
1013 | int r = 0; | |
1014 | ||
1015 | log_verbose("Removing dm dev %u:%u", major, minor); | |
1016 | ||
1017 | if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) | |
1018 | return_0; | |
1019 | ||
1020 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1021 | log_error("Failed to set device number for remove %u:%u", major, minor); | |
1022 | goto out; | |
1023 | } | |
1024 | ||
1025 | r = dm_task_run(dmt); | |
1026 | out: | |
1027 | dm_task_destroy(dmt); | |
1028 | ||
1029 | return r; | |
1030 | } | |
1031 | ||
0c8bdaf3 MB |
1032 | static int _info_by_dev(uint32_t major, uint32_t minor, struct dm_info *info) |
1033 | { | |
80b2de9e | 1034 | return _info_run(NULL, info, NULL, NULL, NULL, 0, 0, major, minor); |
0c8bdaf3 MB |
1035 | } |
1036 | ||
1eeb2fa3 ZK |
1037 | int dev_manager_check_prefix_dm_major_minor(uint32_t major, uint32_t minor, const char *prefix) |
1038 | { | |
1039 | struct dm_task *dmt; | |
1040 | const char *uuid; | |
1041 | int r = 1; | |
1042 | ||
1043 | if (!(dmt = _setup_task_run(DM_DEVICE_INFO, NULL, NULL, NULL, 0, major, minor, 0, 0, 0))) | |
1044 | return_0; | |
1045 | ||
1046 | if (!(uuid = dm_task_get_uuid(dmt)) || strncasecmp(uuid, prefix, strlen(prefix))) | |
1047 | r = 0; | |
1048 | ||
1049 | dm_task_destroy(dmt); | |
1050 | ||
1051 | return r; | |
1052 | } | |
1053 | ||
990f4f7c DT |
1054 | /* |
1055 | * Get a list of active dm devices from the kernel. | |
1056 | * The 'devs' list contains a struct dm_active_device. | |
1057 | */ | |
1058 | ||
1059 | int dev_manager_get_dm_active_devices(const char *prefix, struct dm_list **devs, unsigned *devs_features) | |
0d67bc96 ZK |
1060 | { |
1061 | struct dm_task *dmt; | |
1062 | int r = 1; | |
1063 | ||
1064 | if (!(dmt = _setup_task_run(DM_DEVICE_LIST, NULL, NULL, NULL, 0, 0, 0, 0, 0, 0))) | |
1065 | return_0; | |
1066 | ||
1067 | if (!dm_task_get_device_list(dmt, devs, devs_features)) { | |
1068 | r = 0; | |
1069 | goto_out; | |
1070 | } | |
1071 | ||
1072 | out: | |
1073 | dm_task_destroy(dmt); | |
1074 | ||
1075 | return r; | |
1076 | } | |
1077 | ||
034931f6 ZK |
1078 | int dev_manager_info(struct cmd_context *cmd, |
1079 | const struct logical_volume *lv, const char *layer, | |
80b2de9e | 1080 | int with_open_count, int with_read_ahead, int with_name_check, |
a2c1024f PR |
1081 | struct dm_info *dminfo, uint32_t *read_ahead, |
1082 | struct lv_seg_status *seg_status) | |
f894b4b1 | 1083 | { |
14f782c5 | 1084 | char old_style_dlid[sizeof(UUID_PREFIX) + 2 * ID_LEN]; |
3eadbbeb | 1085 | char *dlid, *name; |
3331199c | 1086 | int r = 0; |
ab9663f3 | 1087 | |
f40dfb48 | 1088 | if (!(name = dm_build_dm_name(cmd->mem, lv->vg->name, lv->name, layer))) |
b7b59ad9 | 1089 | return_0; |
03b49fe1 | 1090 | |
3331199c | 1091 | if (!(dlid = build_dm_uuid(cmd->mem, lv, layer))) |
b7b59ad9 | 1092 | goto_out; |
03b49fe1 | 1093 | |
14f782c5 ZK |
1094 | dm_strncpy(old_style_dlid, dlid, sizeof(old_style_dlid)); |
1095 | ||
f8aa073a | 1096 | if (dm_devs_cache_use() && |
ad1d6887 DT |
1097 | !dm_devs_cache_get_by_uuid(cmd, dlid) && |
1098 | !dm_devs_cache_get_by_uuid(cmd, old_style_dlid)) { | |
04fbffb1 ZK |
1099 | log_debug("Cached as inactive %s.", name); |
1100 | if (dminfo) | |
1101 | memset(dminfo, 0, sizeof(*dminfo)); | |
1102 | r = 1; | |
1103 | goto out; | |
1104 | } | |
1105 | ||
80b2de9e ZK |
1106 | if (!(r = _info(cmd, name, dlid, |
1107 | with_open_count, with_read_ahead, with_name_check, | |
034931f6 ZK |
1108 | dminfo, read_ahead, seg_status))) |
1109 | stack; | |
85b9c12e | 1110 | out: |
f40dfb48 | 1111 | dm_pool_free(cmd->mem, name); |
85b9c12e | 1112 | |
ab9663f3 | 1113 | return r; |
f894b4b1 AK |
1114 | } |
1115 | ||
363e8888 ZK |
1116 | static struct dm_tree_node *_cached_dm_tree_node(struct dm_pool *mem, |
1117 | struct dm_tree *dtree, | |
1118 | const struct logical_volume *lv, | |
1119 | const char *layer) | |
1120 | { | |
1121 | struct dm_tree_node *dnode; | |
1122 | char *dlid; | |
1123 | ||
1124 | if (!(dlid = build_dm_uuid(mem, lv, layer))) | |
1125 | return_NULL; | |
1126 | ||
1127 | dnode = dm_tree_find_node_by_uuid(dtree, dlid); | |
1128 | ||
1129 | dm_pool_free(mem, dlid); | |
1130 | ||
1131 | return dnode; | |
1132 | } | |
1133 | ||
1b439a0b ZK |
1134 | static const struct dm_info *_cached_dm_info(struct dm_pool *mem, |
1135 | struct dm_tree *dtree, | |
1136 | const struct logical_volume *lv, | |
1137 | const char *layer) | |
537f7456 | 1138 | { |
57be501a ZK |
1139 | const struct dm_tree_node *dnode; |
1140 | const struct dm_info *dinfo = NULL; | |
537f7456 | 1141 | |
363e8888 ZK |
1142 | if (!(dnode = _cached_dm_tree_node(mem, dtree, lv, layer))) |
1143 | return NULL; | |
537f7456 MS |
1144 | |
1145 | if (!(dinfo = dm_tree_node_get_info(dnode))) { | |
f5cf6cc9 ZK |
1146 | log_warn("WARNING: Cannot get info from tree node for %s.", |
1147 | display_lvname(lv)); | |
363e8888 | 1148 | return NULL; |
537f7456 MS |
1149 | } |
1150 | ||
1151 | if (!dinfo->exists) | |
57be501a | 1152 | dinfo = NULL; |
537f7456 MS |
1153 | |
1154 | return dinfo; | |
1155 | } | |
1156 | ||
84cdf85b | 1157 | int lv_has_target_type(struct dm_pool *mem, const struct logical_volume *lv, |
1f661c5d | 1158 | const char *layer, const char *target_type) |
c582e3c0 MS |
1159 | { |
1160 | int r = 0; | |
1161 | char *dlid; | |
1162 | struct dm_task *dmt; | |
1163 | struct dm_info info; | |
1164 | void *next = NULL; | |
1165 | uint64_t start, length; | |
1166 | char *type = NULL; | |
1167 | char *params = NULL; | |
1168 | ||
6a0d97a6 | 1169 | if (!(dlid = build_dm_uuid(mem, lv, layer))) |
c582e3c0 MS |
1170 | return_0; |
1171 | ||
5163b8f6 | 1172 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, dlid, 0, 0, 0, 0, 0, 0))) |
647c8edf | 1173 | goto_bad; |
c582e3c0 | 1174 | |
5163b8f6 | 1175 | if (!info.exists) |
c582e3c0 MS |
1176 | goto_out; |
1177 | ||
6954de22 AK |
1178 | /* If there is a preloaded table, use that in preference. */ |
1179 | if (info.inactive_table) { | |
1180 | dm_task_destroy(dmt); | |
1181 | ||
5163b8f6 | 1182 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, dlid, 0, 0, 0, 0, 0, 1))) |
6954de22 AK |
1183 | goto_bad; |
1184 | ||
5163b8f6 | 1185 | if (!info.exists || !info.inactive_table) |
6954de22 AK |
1186 | goto_out; |
1187 | } | |
1188 | ||
c582e3c0 MS |
1189 | do { |
1190 | next = dm_get_next_target(dmt, next, &start, &length, | |
1191 | &type, ¶ms); | |
6954de22 AK |
1192 | if (type && !strncmp(type, target_type, strlen(target_type))) { |
1193 | r = 1; | |
c582e3c0 MS |
1194 | break; |
1195 | } | |
1196 | } while (next); | |
1197 | ||
647c8edf | 1198 | out: |
c582e3c0 | 1199 | dm_task_destroy(dmt); |
647c8edf ZK |
1200 | bad: |
1201 | dm_pool_free(mem, dlid); | |
1202 | ||
c582e3c0 MS |
1203 | return r; |
1204 | } | |
1205 | ||
334117ee | 1206 | static int _lv_has_thin_device_id(struct dm_pool *mem, const struct logical_volume *lv, |
e2cd882f ZK |
1207 | const char *layer, unsigned device_id) |
1208 | { | |
1209 | char *dlid; | |
1210 | struct dm_task *dmt; | |
1211 | struct dm_info info; | |
1212 | void *next = NULL; | |
1213 | uint64_t start, length; | |
1214 | char *type = NULL; | |
1215 | char *params = NULL; | |
1216 | unsigned id = ~0; | |
1217 | ||
1218 | if (!(dlid = build_dm_uuid(mem, lv, layer))) | |
1219 | return_0; | |
1220 | ||
5163b8f6 | 1221 | if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, &info, NULL, dlid, 0, 0, 0, 0, 1, 0))) |
e2cd882f ZK |
1222 | goto_bad; |
1223 | ||
5163b8f6 | 1224 | if (!info.exists) |
e2cd882f ZK |
1225 | goto_out; |
1226 | ||
1227 | /* If there is a preloaded table, use that in preference. */ | |
1228 | if (info.inactive_table) { | |
1229 | dm_task_destroy(dmt); | |
1230 | ||
5163b8f6 | 1231 | if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, &info, NULL, dlid, 0, 0, 0, 0, 1, 1))) |
e2cd882f ZK |
1232 | goto_bad; |
1233 | ||
5163b8f6 | 1234 | if (!info.exists || !info.inactive_table) |
e2cd882f ZK |
1235 | goto_out; |
1236 | } | |
1237 | ||
1238 | (void) dm_get_next_target(dmt, next, &start, &length, &type, ¶ms); | |
1239 | ||
1240 | if (!type || strcmp(type, TARGET_NAME_THIN)) | |
1241 | goto_out; | |
1242 | ||
1243 | if (!params || sscanf(params, "%*u:%*u %u", &id) != 1) | |
1244 | goto_out; | |
1245 | ||
1246 | log_debug_activation("%soaded thin volume %s with id %u is %smatching id %u.", | |
1247 | info.inactive_table ? "Prel" : "L", | |
1248 | display_lvname(lv), id, | |
1249 | (device_id != id) ? "not " : "", device_id); | |
1250 | out: | |
1251 | dm_task_destroy(dmt); | |
1252 | bad: | |
1253 | dm_pool_free(mem, dlid); | |
1254 | ||
1255 | return (device_id == id); | |
1256 | } | |
1257 | ||
81ef4eb4 ZK |
1258 | int add_linear_area_to_dtree(struct dm_tree_node *node, uint64_t size, uint32_t extent_size, |
1259 | int use_linear_target, const char *vgname, const char *lvname) | |
8dd6036d AK |
1260 | { |
1261 | uint32_t page_size; | |
1262 | ||
1263 | /* | |
1264 | * Use striped or linear target? | |
1265 | */ | |
1266 | if (!use_linear_target) { | |
1267 | page_size = lvm_getpagesize() >> SECTOR_SHIFT; | |
1268 | ||
1269 | /* | |
1270 | * We'll use the extent size as the stripe size. | |
1271 | * Extent size and page size are always powers of 2. | |
1272 | * The striped target requires that the stripe size is | |
1273 | * divisible by the page size. | |
1274 | */ | |
1275 | if (extent_size >= page_size) { | |
1276 | /* Use striped target */ | |
1277 | if (!dm_tree_node_add_striped_target(node, size, extent_size)) | |
1278 | return_0; | |
1279 | return 1; | |
81ef4eb4 ZK |
1280 | } |
1281 | ||
1282 | /* Some exotic cases are unsupported by striped. */ | |
1283 | log_warn("WARNING: Using linear target for %s/%s: Striped requires extent size " | |
1284 | "(" FMTu32 " sectors) >= page size (" FMTu32 ").", | |
1285 | vgname, lvname, extent_size, page_size); | |
8dd6036d AK |
1286 | } |
1287 | ||
1288 | /* | |
1289 | * Use linear target. | |
1290 | */ | |
1291 | if (!dm_tree_node_add_linear_target(node, size)) | |
1292 | return_0; | |
1293 | ||
1294 | return 1; | |
1295 | } | |
1296 | ||
cfed0d09 PR |
1297 | static dm_percent_range_t _combine_percent(dm_percent_t a, dm_percent_t b, |
1298 | uint32_t numerator, uint32_t denominator) | |
78ad1549 | 1299 | { |
cfed0d09 PR |
1300 | if (a == LVM_PERCENT_MERGE_FAILED || b == LVM_PERCENT_MERGE_FAILED) |
1301 | return LVM_PERCENT_MERGE_FAILED; | |
23e34c72 | 1302 | |
cfed0d09 PR |
1303 | if (a == DM_PERCENT_INVALID || b == DM_PERCENT_INVALID) |
1304 | return DM_PERCENT_INVALID; | |
78ad1549 | 1305 | |
cfed0d09 PR |
1306 | if (a == DM_PERCENT_100 && b == DM_PERCENT_100) |
1307 | return DM_PERCENT_100; | |
78ad1549 | 1308 | |
cfed0d09 PR |
1309 | if (a == DM_PERCENT_0 && b == DM_PERCENT_0) |
1310 | return DM_PERCENT_0; | |
78ad1549 | 1311 | |
cfed0d09 | 1312 | return (dm_percent_range_t) dm_make_percent(numerator, denominator); |
78ad1549 AK |
1313 | } |
1314 | ||
b9e67d4f | 1315 | static int _percent_run(struct dev_manager *dm, const char *name, |
03b49fe1 | 1316 | const char *dlid, |
b9e67d4f | 1317 | const char *target_type, int wait, |
cfed0d09 | 1318 | const struct logical_volume *lv, dm_percent_t *overall_percent, |
ff8aaade ZK |
1319 | uint32_t *event_nr, int fail_if_percent_unsupported, |
1320 | int *interrupted) | |
a9953411 AK |
1321 | { |
1322 | int r = 0; | |
1323 | struct dm_task *dmt; | |
10b29b8d | 1324 | struct dm_info info; |
a9953411 AK |
1325 | void *next = NULL; |
1326 | uint64_t start, length; | |
1327 | char *type = NULL; | |
1328 | char *params = NULL; | |
d3b4a0f3 | 1329 | const struct dm_list *segh = lv ? &lv->segments : NULL; |
b9e67d4f | 1330 | struct lv_segment *seg = NULL; |
78ad1549 | 1331 | int first_time = 1; |
cfed0d09 | 1332 | dm_percent_t percent = DM_PERCENT_INVALID; |
a9953411 | 1333 | uint64_t total_numerator = 0, total_denominator = 0; |
8bbec41b | 1334 | struct segment_type *segtype; |
a9953411 | 1335 | |
eb08f865 | 1336 | *overall_percent = percent; |
a9953411 | 1337 | |
8bbec41b ZK |
1338 | if (!(segtype = get_segtype_from_string(dm->cmd, target_type))) |
1339 | return_0; | |
1340 | ||
ff8aaade ZK |
1341 | if (wait) |
1342 | sigint_allow(); | |
1343 | ||
5163b8f6 ZK |
1344 | if (!(dmt = _setup_task_run(wait ? DM_DEVICE_WAITEVENT : DM_DEVICE_STATUS, &info, |
1345 | name, dlid, event_nr, 0, 0, 0, 0, 0))) | |
ff8aaade | 1346 | goto_bad; |
a9953411 | 1347 | |
5163b8f6 | 1348 | if (!info.exists) |
5f4b2acf | 1349 | goto_out; |
10b29b8d AK |
1350 | |
1351 | if (event_nr) | |
1352 | *event_nr = info.event_nr; | |
1353 | ||
a9953411 AK |
1354 | do { |
1355 | next = dm_get_next_target(dmt, next, &start, &length, &type, | |
1356 | ¶ms); | |
b9e67d4f | 1357 | if (lv) { |
2c44337b | 1358 | if (!(segh = dm_list_next(&lv->segments, segh))) { |
b9e67d4f | 1359 | log_error("Number of segments in active LV %s " |
922fccc6 ZK |
1360 | "does not match metadata.", |
1361 | display_lvname(lv)); | |
b9e67d4f AK |
1362 | goto out; |
1363 | } | |
2c44337b | 1364 | seg = dm_list_item(segh, struct lv_segment); |
b9e67d4f | 1365 | } |
a9953411 | 1366 | |
e47a591d | 1367 | if (!type || !params) |
a9953411 AK |
1368 | continue; |
1369 | ||
e47a591d MS |
1370 | if (strcmp(type, target_type)) { |
1371 | /* If kernel's type isn't an exact match is it compatible? */ | |
1372 | if (!segtype->ops->target_status_compatible || | |
1373 | !segtype->ops->target_status_compatible(type)) | |
1374 | continue; | |
1375 | } | |
1376 | ||
e8bed35d AK |
1377 | if (!segtype->ops->target_percent) |
1378 | continue; | |
1379 | ||
1380 | if (!segtype->ops->target_percent(&dm->target_state, | |
8191fe4f | 1381 | &percent, dm->mem, |
aba30ebc | 1382 | dm->cmd, seg, params, |
4922197a | 1383 | &total_numerator, |
82185ada | 1384 | &total_denominator)) |
5f4b2acf | 1385 | goto_out; |
4922197a | 1386 | |
78ad1549 | 1387 | if (first_time) { |
8191fe4f | 1388 | *overall_percent = percent; |
78ad1549 AK |
1389 | first_time = 0; |
1390 | } else | |
8191fe4f PR |
1391 | *overall_percent = |
1392 | _combine_percent(*overall_percent, percent, | |
1393 | total_numerator, total_denominator); | |
a9953411 AK |
1394 | } while (next); |
1395 | ||
f2554b9d | 1396 | if (lv && dm_list_next(&lv->segments, segh)) { |
b9e67d4f | 1397 | log_error("Number of segments in active LV %s does not " |
922fccc6 | 1398 | "match metadata.", display_lvname(lv)); |
b9e67d4f AK |
1399 | goto out; |
1400 | } | |
1401 | ||
8191fe4f PR |
1402 | if (first_time) { |
1403 | /* above ->target_percent() was not executed! */ | |
1404 | /* FIXME why return PERCENT_100 et. al. in this case? */ | |
cfed0d09 | 1405 | *overall_percent = DM_PERCENT_100; |
8191fe4f PR |
1406 | if (fail_if_percent_unsupported) |
1407 | goto_out; | |
78ad1549 | 1408 | } |
a9953411 | 1409 | |
1bd4b005 ZK |
1410 | log_debug_activation("LV percent: %s", |
1411 | display_percent(dm->cmd, *overall_percent)); | |
a9953411 AK |
1412 | r = 1; |
1413 | ||
ff8aaade | 1414 | out: |
a9953411 | 1415 | dm_task_destroy(dmt); |
ff8aaade ZK |
1416 | |
1417 | bad: | |
1418 | if (wait) { | |
1419 | sigint_restore(); | |
1420 | ||
1421 | if (sigint_caught()) { | |
1422 | *interrupted = 1; | |
1423 | return_0; | |
1424 | } | |
1425 | } | |
1426 | ||
a9953411 AK |
1427 | return r; |
1428 | } | |
1429 | ||
03b49fe1 | 1430 | static int _percent(struct dev_manager *dm, const char *name, const char *dlid, |
b9e67d4f | 1431 | const char *target_type, int wait, |
cfed0d09 | 1432 | const struct logical_volume *lv, dm_percent_t *percent, |
8191fe4f | 1433 | uint32_t *event_nr, int fail_if_percent_unsupported) |
a9953411 | 1434 | { |
ff8aaade ZK |
1435 | int interrupted = 0; |
1436 | ||
878467cd AK |
1437 | if (dlid && *dlid) { |
1438 | if (_percent_run(dm, NULL, dlid, target_type, wait, lv, percent, | |
ff8aaade | 1439 | event_nr, fail_if_percent_unsupported, &interrupted)) |
878467cd | 1440 | return 1; |
0bf836aa | 1441 | |
ff8aaade ZK |
1442 | if (!interrupted && |
1443 | _original_uuid_format_check_required(dm->cmd) && | |
0bf836aa ZK |
1444 | _percent_run(dm, NULL, dlid + sizeof(UUID_PREFIX) - 1, |
1445 | target_type, wait, lv, percent, | |
ff8aaade | 1446 | event_nr, fail_if_percent_unsupported, &interrupted)) |
878467cd AK |
1447 | return 1; |
1448 | } | |
a9953411 | 1449 | |
ff8aaade ZK |
1450 | if (!interrupted && name && |
1451 | _percent_run(dm, name, NULL, target_type, wait, lv, percent, | |
1452 | event_nr, fail_if_percent_unsupported, &interrupted)) | |
a9953411 AK |
1453 | return 1; |
1454 | ||
fd31cc9d | 1455 | return_0; |
a9953411 AK |
1456 | } |
1457 | ||
85ed4030 | 1458 | /* FIXME Merge with the percent function */ |
84cdf85b | 1459 | int dev_manager_transient(struct dev_manager *dm, const struct logical_volume *lv) |
d345bf2c PR |
1460 | { |
1461 | int r = 0; | |
1462 | struct dm_task *dmt; | |
1463 | struct dm_info info; | |
1464 | void *next = NULL; | |
1465 | uint64_t start, length; | |
1466 | char *type = NULL; | |
1467 | char *params = NULL; | |
1468 | char *dlid = NULL; | |
4af4241b | 1469 | const char *layer = lv_layer(lv); |
d345bf2c PR |
1470 | const struct dm_list *segh = &lv->segments; |
1471 | struct lv_segment *seg = NULL; | |
1472 | ||
6a0d97a6 | 1473 | if (!(dlid = build_dm_uuid(dm->mem, lv, layer))) |
d345bf2c PR |
1474 | return_0; |
1475 | ||
5163b8f6 | 1476 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, dlid, NULL, 0, 0, 0, 0, 0))) |
d345bf2c PR |
1477 | return_0; |
1478 | ||
5163b8f6 | 1479 | if (!info.exists) |
d345bf2c PR |
1480 | goto_out; |
1481 | ||
1482 | do { | |
1483 | next = dm_get_next_target(dmt, next, &start, &length, &type, | |
1484 | ¶ms); | |
81e606ab ZK |
1485 | |
1486 | if (!(segh = dm_list_next(&lv->segments, segh))) { | |
1487 | log_error("Number of segments in active LV %s " | |
922fccc6 | 1488 | "does not match metadata.", display_lvname(lv)); |
81e606ab | 1489 | goto out; |
d345bf2c | 1490 | } |
81e606ab | 1491 | seg = dm_list_item(segh, struct lv_segment); |
d345bf2c PR |
1492 | |
1493 | if (!type || !params) | |
1494 | continue; | |
1495 | ||
fd417db2 ZK |
1496 | if (!seg) { |
1497 | log_error(INTERNAL_ERROR "Segment is not selected."); | |
1498 | goto out; | |
1499 | } | |
1500 | ||
d345bf2c | 1501 | if (seg->segtype->ops->check_transient_status && |
6336ef98 | 1502 | !seg->segtype->ops->check_transient_status(dm->mem, seg, params)) |
d345bf2c PR |
1503 | goto_out; |
1504 | ||
1505 | } while (next); | |
1506 | ||
f2554b9d | 1507 | if (dm_list_next(&lv->segments, segh)) { |
d345bf2c | 1508 | log_error("Number of segments in active LV %s does not " |
922fccc6 | 1509 | "match metadata.", display_lvname(lv)); |
d345bf2c PR |
1510 | goto out; |
1511 | } | |
1512 | ||
1513 | r = 1; | |
1514 | ||
1515 | out: | |
1516 | dm_task_destroy(dmt); | |
1517 | return r; | |
1518 | } | |
1519 | ||
5f4b2acf AK |
1520 | /* |
1521 | * dev_manager implementation. | |
1522 | */ | |
1523 | struct dev_manager *dev_manager_create(struct cmd_context *cmd, | |
df390f17 AK |
1524 | const char *vg_name, |
1525 | unsigned track_pvmove_deps) | |
2ed2a724 | 1526 | { |
5f4b2acf AK |
1527 | struct dm_pool *mem; |
1528 | struct dev_manager *dm; | |
2ed2a724 | 1529 | |
c51b9fff AK |
1530 | if (!(mem = dm_pool_create("dev_manager", 16 * 1024))) |
1531 | return_NULL; | |
2ed2a724 | 1532 | |
61064609 | 1533 | if (!(dm = dm_pool_zalloc(mem, sizeof(*dm)))) |
4f2f566b | 1534 | goto_bad; |
2ed2a724 | 1535 | |
5f4b2acf AK |
1536 | dm->cmd = cmd; |
1537 | dm->mem = mem; | |
528695ec | 1538 | dm->vg_name = vg_name; |
36902810 | 1539 | |
df390f17 AK |
1540 | /* |
1541 | * When we manipulate (normally suspend/resume) the PVMOVE | |
1542 | * device directly, there's no need to touch the LVs above. | |
1543 | */ | |
1544 | dm->track_pvmove_deps = track_pvmove_deps; | |
1545 | ||
5f4b2acf | 1546 | dm->target_state = NULL; |
e9c761b8 | 1547 | |
cf8235e0 AK |
1548 | dm_udev_set_sync_support(cmd->current_settings.udev_sync); |
1549 | ||
5f4b2acf | 1550 | return dm; |
36902810 | 1551 | |
5f4b2acf AK |
1552 | bad: |
1553 | dm_pool_destroy(mem); | |
81ef4eb4 | 1554 | |
5f4b2acf | 1555 | return NULL; |
36902810 AK |
1556 | } |
1557 | ||
5f4b2acf | 1558 | void dev_manager_destroy(struct dev_manager *dm) |
36902810 | 1559 | { |
5f4b2acf AK |
1560 | dm_pool_destroy(dm->mem); |
1561 | } | |
36902810 | 1562 | |
2293567c AK |
1563 | void dev_manager_release(void) |
1564 | { | |
1565 | dm_lib_release(); | |
1566 | } | |
1567 | ||
5f4b2acf AK |
1568 | void dev_manager_exit(void) |
1569 | { | |
1570 | dm_lib_exit(); | |
36902810 AK |
1571 | } |
1572 | ||
5f4b2acf | 1573 | int dev_manager_snapshot_percent(struct dev_manager *dm, |
472ac5bd | 1574 | const struct logical_volume *lv, |
cfed0d09 | 1575 | dm_percent_t *percent) |
36902810 | 1576 | { |
861c624a | 1577 | const struct logical_volume *snap_lv; |
5f4b2acf AK |
1578 | char *name; |
1579 | const char *dlid; | |
15816a3b MS |
1580 | int fail_if_percent_unsupported = 0; |
1581 | ||
1582 | if (lv_is_merging_origin(lv)) { | |
1583 | /* | |
1584 | * Set 'fail_if_percent_unsupported', otherwise passing | |
1585 | * unsupported LV types to _percent will lead to a default | |
1586 | * successful return with percent_range as PERCENT_100. | |
1587 | * - For a merging origin, this will result in a polldaemon | |
1588 | * that runs infinitely (because completion is PERCENT_0) | |
1589 | * - We unfortunately don't yet _know_ if a snapshot-merge | |
1590 | * target is active (activation is deferred if dev is open); | |
1591 | * so we can't short-circuit origin devices based purely on | |
1592 | * existing LVM LV attributes. | |
1593 | */ | |
1594 | fail_if_percent_unsupported = 1; | |
1595 | } | |
5f4b2acf | 1596 | |
861c624a MS |
1597 | if (lv_is_merging_cow(lv)) { |
1598 | /* must check percent of origin for a merging snapshot */ | |
1599 | snap_lv = origin_from_cow(lv); | |
1600 | } else | |
1601 | snap_lv = lv; | |
1602 | ||
5f4b2acf AK |
1603 | /* |
1604 | * Build a name for the top layer. | |
1605 | */ | |
861c624a | 1606 | if (!(name = dm_build_dm_name(dm->mem, snap_lv->vg->name, snap_lv->name, NULL))) |
5f4b2acf AK |
1607 | return_0; |
1608 | ||
6a0d97a6 | 1609 | if (!(dlid = build_dm_uuid(dm->mem, snap_lv, NULL))) |
5f4b2acf | 1610 | return_0; |
36902810 | 1611 | |
5f4b2acf AK |
1612 | /* |
1613 | * Try and get some info on this device. | |
1614 | */ | |
1216efdf | 1615 | if (!_percent(dm, name, dlid, TARGET_NAME_SNAPSHOT, 0, NULL, percent, |
fd31cc9d | 1616 | NULL, fail_if_percent_unsupported)) |
c51b9fff | 1617 | return_0; |
36902810 | 1618 | |
5f4b2acf | 1619 | /* If the snapshot isn't available, percent will be -1 */ |
36902810 AK |
1620 | return 1; |
1621 | } | |
1622 | ||
5f4b2acf AK |
1623 | /* FIXME Merge with snapshot_percent, auto-detecting target type */ |
1624 | /* FIXME Cope with more than one target */ | |
1625 | int dev_manager_mirror_percent(struct dev_manager *dm, | |
6c1c02dc | 1626 | const struct logical_volume *lv, int wait, |
cfed0d09 | 1627 | dm_percent_t *percent, uint32_t *event_nr) |
fc28b60f | 1628 | { |
5f4b2acf AK |
1629 | char *name; |
1630 | const char *dlid; | |
cac52ca4 | 1631 | const char *target_type = first_seg(lv)->segtype->name; |
4af4241b | 1632 | const char *layer = lv_layer(lv); |
fc28b60f | 1633 | |
4bb3eccf | 1634 | /* |
5f4b2acf | 1635 | * Build a name for the top layer. |
4bb3eccf | 1636 | */ |
e59e2f7c | 1637 | if (!(name = dm_build_dm_name(dm->mem, lv->vg->name, lv->name, layer))) |
5f4b2acf | 1638 | return_0; |
45267479 | 1639 | |
b7b59ad9 ZK |
1640 | if (!(dlid = build_dm_uuid(dm->mem, lv, layer))) |
1641 | return_0; | |
14a9cda6 | 1642 | |
81ef4eb4 | 1643 | log_debug_activation("Getting device %s status percentage for %s.", |
06abb2dd | 1644 | target_type, name); |
81ef4eb4 ZK |
1645 | |
1646 | if (!_percent(dm, name, dlid, target_type, wait, lv, percent, event_nr, 0)) | |
c51b9fff | 1647 | return_0; |
14a9cda6 | 1648 | |
5f4b2acf AK |
1649 | return 1; |
1650 | } | |
914c9723 | 1651 | |
c8242e5c JB |
1652 | int dev_manager_raid_status(struct dev_manager *dm, |
1653 | const struct logical_volume *lv, | |
a9b4acd5 | 1654 | struct lv_status_raid **status, int *exists) |
c8242e5c JB |
1655 | { |
1656 | int r = 0; | |
1657 | const char *dlid; | |
1658 | struct dm_task *dmt; | |
1659 | struct dm_info info; | |
1660 | uint64_t start, length; | |
1661 | char *type = NULL; | |
1662 | char *params = NULL; | |
f5cd9c35 | 1663 | const char *layer = lv_layer(lv); |
a9b4acd5 ZK |
1664 | struct dm_status_raid *sr; |
1665 | ||
1666 | *exists = -1; | |
1667 | if (!(*status = dm_pool_zalloc(dm->mem, sizeof(struct lv_status_cache)))) | |
1668 | return_0; | |
c8242e5c | 1669 | |
6a0d97a6 | 1670 | if (!(dlid = build_dm_uuid(dm->mem, lv, layer))) |
c8242e5c JB |
1671 | return_0; |
1672 | ||
5163b8f6 | 1673 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, dlid, 0, 0, 0, 0, 0, 0))) |
c8242e5c JB |
1674 | return_0; |
1675 | ||
a9b4acd5 ZK |
1676 | if (!(*exists = info.exists)) |
1677 | goto out; | |
1678 | ||
1679 | log_debug_activation("Checking raid status for volume %s.", | |
1680 | display_lvname(lv)); | |
c8242e5c JB |
1681 | |
1682 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); | |
1683 | ||
81ef4eb4 ZK |
1684 | if (!type || strcmp(type, TARGET_NAME_RAID)) { |
1685 | log_error("Expected %s segment type but got %s instead.", | |
1686 | TARGET_NAME_RAID, type ? type : "NULL"); | |
38f8f4a9 JB |
1687 | goto out; |
1688 | } | |
1689 | ||
c2dc21d8 AK |
1690 | /* FIXME Check there's only one target */ |
1691 | ||
a9b4acd5 | 1692 | if (!dm_get_status_raid(dm->mem, params, &sr)) |
c8242e5c JB |
1693 | goto_out; |
1694 | ||
a9b4acd5 ZK |
1695 | (*status)->mem = dm->mem; /* User has to destroy this mem pool later */ |
1696 | (*status)->raid = sr; | |
1697 | (*status)->in_sync = dm_make_percent(sr->insync_regions, sr->total_regions); | |
1698 | ||
c8242e5c JB |
1699 | r = 1; |
1700 | out: | |
1701 | dm_task_destroy(dmt); | |
1702 | ||
1703 | return r; | |
1704 | } | |
1705 | ||
ff64e350 JB |
1706 | int dev_manager_raid_message(struct dev_manager *dm, |
1707 | const struct logical_volume *lv, | |
1708 | const char *msg) | |
1709 | { | |
1710 | int r = 0; | |
1711 | const char *dlid; | |
1712 | struct dm_task *dmt; | |
1713 | const char *layer = lv_layer(lv); | |
1714 | ||
2360ce35 | 1715 | if (!lv_is_raid(lv)) { |
81ef4eb4 | 1716 | log_error(INTERNAL_ERROR "%s is not a RAID logical volume.", |
922fccc6 | 1717 | display_lvname(lv)); |
ff64e350 JB |
1718 | return 0; |
1719 | } | |
1720 | ||
547bdb63 | 1721 | /* These are the supported RAID messages for dm-raid v1.9.0 */ |
a45cc0fe ZK |
1722 | if (strcmp(msg, "idle") && |
1723 | strcmp(msg, "frozen") && | |
1724 | strcmp(msg, "resync") && | |
1725 | strcmp(msg, "recover") && | |
1726 | strcmp(msg, "check") && | |
547bdb63 | 1727 | strcmp(msg, "repair")) { |
81ef4eb4 | 1728 | log_error(INTERNAL_ERROR "Unknown RAID message: %s.", msg); |
ff64e350 JB |
1729 | return 0; |
1730 | } | |
1731 | ||
6a0d97a6 | 1732 | if (!(dlid = build_dm_uuid(dm->mem, lv, layer))) |
ff64e350 JB |
1733 | return_0; |
1734 | ||
5163b8f6 | 1735 | if (!(dmt = _setup_task_run(DM_DEVICE_TARGET_MSG, NULL, NULL, dlid, 0, 0, 0, 0, 1, 0))) |
ff64e350 JB |
1736 | return_0; |
1737 | ||
ff64e350 JB |
1738 | if (!dm_task_set_message(dmt, msg)) |
1739 | goto_out; | |
1740 | ||
1741 | if (!dm_task_run(dmt)) | |
1742 | goto_out; | |
1743 | ||
1744 | r = 1; | |
1745 | out: | |
1746 | dm_task_destroy(dmt); | |
1747 | ||
1748 | return r; | |
1749 | } | |
1750 | ||
3ae55695 DT |
1751 | int dev_manager_writecache_message(struct dev_manager *dm, |
1752 | const struct logical_volume *lv, | |
1753 | const char *msg) | |
1754 | { | |
1755 | int r = 0; | |
1756 | const char *dlid; | |
1757 | struct dm_task *dmt; | |
1758 | const char *layer = lv_layer(lv); | |
1759 | ||
1760 | if (!lv_is_writecache(lv)) { | |
1761 | log_error(INTERNAL_ERROR "%s is not a writecache logical volume.", | |
1762 | display_lvname(lv)); | |
1763 | return 0; | |
1764 | } | |
1765 | ||
1766 | if (!(dlid = build_dm_uuid(dm->mem, lv, layer))) | |
1767 | return_0; | |
1768 | ||
1769 | if (!(dmt = _setup_task_run(DM_DEVICE_TARGET_MSG, NULL, NULL, dlid, 0, 0, 0, 0, 1, 0))) | |
1770 | return_0; | |
1771 | ||
1772 | if (!dm_task_set_message(dmt, msg)) | |
1773 | goto_out; | |
1774 | ||
1775 | if (!dm_task_run(dmt)) | |
1776 | goto_out; | |
1777 | ||
1778 | r = 1; | |
1779 | out: | |
1780 | dm_task_destroy(dmt); | |
1781 | ||
1782 | return r; | |
1783 | } | |
1784 | ||
75b8ea19 JB |
1785 | int dev_manager_cache_status(struct dev_manager *dm, |
1786 | const struct logical_volume *lv, | |
e5a60086 | 1787 | struct lv_status_cache **status, int *exists) |
75b8ea19 JB |
1788 | { |
1789 | int r = 0; | |
1790 | const char *dlid; | |
1791 | struct dm_task *dmt; | |
1792 | struct dm_info info; | |
1793 | uint64_t start, length; | |
1794 | char *type = NULL; | |
1795 | char *params = NULL; | |
ab491204 | 1796 | struct dm_status_cache *c; |
75b8ea19 | 1797 | |
e5a60086 | 1798 | *exists = -1; |
ab491204 ZK |
1799 | if (!(dlid = build_dm_uuid(dm->mem, lv, lv_layer(lv)))) |
1800 | return_0; | |
1801 | ||
5163b8f6 | 1802 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, dlid, 0, 0, 0, 0, 0, 0))) |
75b8ea19 JB |
1803 | return_0; |
1804 | ||
e5a60086 ZK |
1805 | if (!(*exists = info.exists)) |
1806 | goto out; | |
1807 | ||
1808 | log_debug_activation("Checking status for cache volume %s.", | |
1809 | display_lvname(lv)); | |
75b8ea19 JB |
1810 | |
1811 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); | |
1812 | ||
1216efdf | 1813 | if (!type || strcmp(type, TARGET_NAME_CACHE)) { |
81ef4eb4 ZK |
1814 | log_error("Expected %s segment type but got %s instead.", |
1815 | TARGET_NAME_CACHE, type ? type : "NULL"); | |
75b8ea19 JB |
1816 | goto out; |
1817 | } | |
1818 | ||
ab491204 ZK |
1819 | /* |
1820 | * FIXME: | |
1821 | * ->target_percent() API is able to transfer only a single value. | |
1822 | * Needs to be able to pass whole structure. | |
1823 | */ | |
5034bb8d | 1824 | if (!dm_get_status_cache(dm->mem, params, &c)) |
75b8ea19 JB |
1825 | goto_out; |
1826 | ||
4de6f580 ZK |
1827 | if (!(*status = dm_pool_zalloc(dm->mem, sizeof(struct lv_status_cache)))) |
1828 | goto_out; | |
1829 | ||
e5d3f812 | 1830 | (*status)->mem = dm->mem; /* User has to destroy this mem pool later */ |
4de6f580 | 1831 | (*status)->cache = c; |
5c415afd ZK |
1832 | if (c->fail || c->error) { |
1833 | (*status)->data_usage = | |
1834 | (*status)->metadata_usage = | |
1835 | (*status)->dirty_usage = DM_PERCENT_INVALID; | |
1836 | } else { | |
1837 | (*status)->data_usage = dm_make_percent(c->used_blocks, | |
1838 | c->total_blocks); | |
1839 | (*status)->metadata_usage = dm_make_percent(c->metadata_used_blocks, | |
1840 | c->metadata_total_blocks); | |
05dc70e2 | 1841 | (*status)->dirty_usage = (c->used_blocks) ? |
454b891f ZK |
1842 | dm_make_percent(c->dirty_blocks, |
1843 | c->used_blocks) : DM_PERCENT_0; | |
5c415afd | 1844 | } |
75b8ea19 JB |
1845 | r = 1; |
1846 | out: | |
1847 | dm_task_destroy(dmt); | |
1848 | ||
1849 | return r; | |
1850 | } | |
1851 | ||
bdba904d | 1852 | int dev_manager_thin_pool_status(struct dev_manager *dm, |
4de6f580 | 1853 | const struct logical_volume *lv, int flush, |
e5a60086 | 1854 | struct lv_status_thin_pool **status, int *exists) |
bdba904d | 1855 | { |
4de6f580 | 1856 | struct dm_status_thin_pool *dm_status; |
bdba904d ZK |
1857 | const char *dlid; |
1858 | struct dm_task *dmt; | |
1859 | struct dm_info info; | |
1860 | uint64_t start, length; | |
1861 | char *type = NULL; | |
1862 | char *params = NULL; | |
1863 | int r = 0; | |
1864 | ||
e5a60086 ZK |
1865 | *exists = -1; |
1866 | if (!(*status = dm_pool_zalloc(dm->mem, sizeof(struct lv_status_thin_pool)))) | |
1867 | return_0; | |
1868 | ||
bdba904d | 1869 | /* Build dlid for the thin pool layer */ |
6a0d97a6 | 1870 | if (!(dlid = build_dm_uuid(dm->mem, lv, lv_layer(lv)))) |
bdba904d ZK |
1871 | return_0; |
1872 | ||
5163b8f6 | 1873 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, dlid, 0, 0, 0, 0, flush, 0))) |
bdba904d ZK |
1874 | return_0; |
1875 | ||
e5a60086 ZK |
1876 | if (!(*exists = info.exists)) |
1877 | goto out; | |
1878 | ||
1879 | log_debug_activation("Checking thin pool status for LV %s.", | |
1880 | display_lvname(lv)); | |
bdba904d ZK |
1881 | |
1882 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); | |
1883 | ||
4de6f580 ZK |
1884 | if (!type || strcmp(type, TARGET_NAME_THIN_POOL)) { |
1885 | log_error("Expected %s segment type but got %s instead.", | |
1886 | TARGET_NAME_THIN_POOL, type ? type : "NULL"); | |
1887 | goto out; | |
1888 | } | |
c2dc21d8 | 1889 | |
4de6f580 | 1890 | if (!dm_get_status_thin_pool(dm->mem, params, &dm_status)) |
bdba904d ZK |
1891 | goto_out; |
1892 | ||
4de6f580 ZK |
1893 | (*status)->mem = dm->mem; |
1894 | (*status)->thin_pool = dm_status; | |
1895 | ||
1896 | if (dm_status->fail || dm_status->error) { | |
1897 | (*status)->data_usage = | |
1898 | (*status)->metadata_usage = DM_PERCENT_INVALID; | |
1899 | } else { | |
1900 | (*status)->data_usage = dm_make_percent(dm_status->used_data_blocks, | |
1901 | dm_status->total_data_blocks); | |
1902 | (*status)->metadata_usage = dm_make_percent(dm_status->used_metadata_blocks, | |
1903 | dm_status->total_metadata_blocks); | |
1904 | } | |
1905 | ||
bdba904d ZK |
1906 | r = 1; |
1907 | out: | |
1908 | dm_task_destroy(dmt); | |
1909 | ||
1910 | return r; | |
1911 | } | |
1912 | ||
4de6f580 ZK |
1913 | int dev_manager_thin_status(struct dev_manager *dm, |
1914 | const struct logical_volume *lv, int flush, | |
e5a60086 | 1915 | struct lv_status_thin **status, int *exists) |
c0fcaacb | 1916 | { |
4de6f580 | 1917 | struct dm_status_thin *dm_status; |
c0fcaacb | 1918 | const char *dlid; |
4de6f580 ZK |
1919 | struct dm_task *dmt; |
1920 | struct dm_info info; | |
1921 | uint64_t start, length; | |
1922 | char *type = NULL; | |
1923 | char *params = NULL; | |
1924 | uint64_t csize; | |
1925 | int r = 0; | |
c0fcaacb | 1926 | |
e5a60086 ZK |
1927 | *exists = -1; |
1928 | if (!(*status = dm_pool_zalloc(dm->mem, sizeof(struct lv_status_thin)))) | |
1929 | return_0; | |
1930 | ||
4de6f580 | 1931 | if (!(dlid = build_dm_uuid(dm->mem, lv, lv_layer(lv)))) |
c0fcaacb ZK |
1932 | return_0; |
1933 | ||
4de6f580 | 1934 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, dlid, 0, 0, 0, 0, flush, 0))) |
c0fcaacb ZK |
1935 | return_0; |
1936 | ||
e5a60086 ZK |
1937 | if (!(*exists = info.exists)) |
1938 | goto out; | |
1939 | ||
1940 | log_debug_activation("Checking thin status for LV %s.", | |
1941 | display_lvname(lv)); | |
c0fcaacb | 1942 | |
4de6f580 | 1943 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); |
c0fcaacb | 1944 | |
4de6f580 ZK |
1945 | if (!type || strcmp(type, TARGET_NAME_THIN)) { |
1946 | log_error("Expected %s segment type but got %s instead.", | |
1947 | TARGET_NAME_THIN, type ? type : "NULL"); | |
1948 | goto out; | |
1949 | } | |
76ee0899 | 1950 | |
4de6f580 ZK |
1951 | if (!dm_get_status_thin(dm->mem, params, &dm_status)) |
1952 | goto_out; | |
76ee0899 | 1953 | |
4de6f580 ZK |
1954 | (*status)->mem = dm->mem; |
1955 | (*status)->thin = dm_status; | |
1956 | ||
1957 | if (dm_status->fail) | |
1958 | (*status)->usage = DM_PERCENT_INVALID; | |
1959 | else { | |
1960 | /* Pool allocates whole chunk so round-up to nearest one */ | |
1961 | csize = first_seg(first_seg(lv)->pool_lv)->chunk_size; | |
1962 | csize = ((lv->size + csize - 1) / csize) * csize; | |
1963 | if (dm_status->mapped_sectors > csize) { | |
1964 | log_warn("WARNING: LV %s maps %s while the size is only %s.", | |
1965 | display_lvname(lv), | |
1966 | display_size(dm->cmd, dm_status->mapped_sectors), | |
1967 | display_size(dm->cmd, csize)); | |
1968 | /* Don't show nonsense numbers like i.e. 1000% full */ | |
1969 | dm_status->mapped_sectors = csize; | |
1970 | } | |
1971 | (*status)->usage = dm_make_percent(dm_status->mapped_sectors, csize); | |
1972 | } | |
81ef4eb4 | 1973 | |
4de6f580 ZK |
1974 | r = 1; |
1975 | out: | |
1976 | dm_task_destroy(dmt); | |
76ee0899 | 1977 | |
4de6f580 | 1978 | return r; |
76ee0899 ZK |
1979 | } |
1980 | ||
9968be55 ZK |
1981 | /* |
1982 | * Explore state of running DM table to obtain currently used deviceId | |
1983 | */ | |
572983d7 ZK |
1984 | int dev_manager_thin_device_id(struct dev_manager *dm, |
1985 | const struct logical_volume *lv, | |
e5a60086 | 1986 | uint32_t *device_id, int *exists) |
572983d7 ZK |
1987 | { |
1988 | const char *dlid; | |
1989 | struct dm_task *dmt; | |
1990 | struct dm_info info; | |
1991 | uint64_t start, length; | |
1992 | char *params, *target_type = NULL; | |
9968be55 | 1993 | const char *layer = lv_layer(lv); |
572983d7 ZK |
1994 | int r = 0; |
1995 | ||
e5a60086 | 1996 | *exists = -1; |
9968be55 ZK |
1997 | if (lv_is_merging_origin(lv) && !lv_info(lv->vg->cmd, lv, 1, NULL, 0, 0)) |
1998 | /* If the merge has already happened, that table | |
1999 | * can already be using correct LV without -real layer */ | |
2000 | layer = NULL; | |
2001 | ||
572983d7 | 2002 | /* Build dlid for the thin layer */ |
9968be55 | 2003 | if (!(dlid = build_dm_uuid(dm->mem, lv, layer))) |
572983d7 ZK |
2004 | return_0; |
2005 | ||
5163b8f6 | 2006 | if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, &info, NULL, dlid, 0, 0, 0, 0, 1, 0))) |
572983d7 ZK |
2007 | return_0; |
2008 | ||
e5a60086 ZK |
2009 | if (!(*exists = info.exists)) |
2010 | goto out; | |
2011 | ||
2012 | log_debug_activation("Checking device id for LV %s.", | |
2013 | display_lvname(lv)); | |
572983d7 ZK |
2014 | |
2015 | if (dm_get_next_target(dmt, NULL, &start, &length, | |
2016 | &target_type, ¶ms)) { | |
922fccc6 ZK |
2017 | log_error("More then one table line found for %s.", |
2018 | display_lvname(lv)); | |
572983d7 ZK |
2019 | goto out; |
2020 | } | |
2021 | ||
1216efdf | 2022 | if (!target_type || strcmp(target_type, TARGET_NAME_THIN)) { |
922fccc6 ZK |
2023 | log_error("Unexpected target type %s found for thin %s.", |
2024 | target_type, display_lvname(lv)); | |
572983d7 ZK |
2025 | goto out; |
2026 | } | |
2027 | ||
164d7e72 | 2028 | if (!params || sscanf(params, "%*u:%*u %u", device_id) != 1) { |
922fccc6 ZK |
2029 | log_error("Cannot parse table like parameters %s for %s.", |
2030 | params, display_lvname(lv)); | |
572983d7 ZK |
2031 | goto out; |
2032 | } | |
2033 | ||
2034 | r = 1; | |
2035 | out: | |
2036 | dm_task_destroy(dmt); | |
2037 | ||
2038 | return r; | |
2039 | } | |
2040 | ||
4f708e87 | 2041 | int dev_manager_vdo_pool_status(struct dev_manager *dm, |
e5a60086 ZK |
2042 | const struct logical_volume *lv, int flush, |
2043 | struct lv_status_vdo **status, int *exists) | |
4f708e87 | 2044 | { |
4f708e87 ZK |
2045 | const char *dlid; |
2046 | struct dm_info info; | |
2047 | uint64_t start, length; | |
2048 | struct dm_task *dmt = NULL; | |
2049 | char *type = NULL; | |
2050 | char *params = NULL; | |
2051 | int r = 0; | |
2052 | ||
e5a60086 ZK |
2053 | *exists = -1; |
2054 | if (!(*status = dm_pool_zalloc(dm->mem, sizeof(struct lv_status_vdo)))) | |
2055 | return_0; | |
4f708e87 ZK |
2056 | |
2057 | if (!(dlid = build_dm_uuid(dm->mem, lv, lv_layer(lv)))) | |
2058 | return_0; | |
2059 | ||
2060 | if (!(dmt = _setup_task_run(DM_DEVICE_STATUS, &info, NULL, dlid, 0, 0, 0, 0, flush, 0))) | |
2061 | return_0; | |
2062 | ||
e5a60086 ZK |
2063 | if (!(*exists = info.exists)) |
2064 | goto out; | |
2065 | ||
2066 | log_debug_activation("Checking VDO pool status for LV %s.", | |
2067 | display_lvname(lv)); | |
4f708e87 ZK |
2068 | |
2069 | if (dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms)) { | |
2070 | log_error("More then one table line found for %s.", | |
2071 | display_lvname(lv)); | |
2072 | goto out; | |
2073 | } | |
2074 | ||
2075 | if (!type || strcmp(type, TARGET_NAME_VDO)) { | |
2076 | log_error("Expected %s segment type but got %s instead.", | |
2077 | TARGET_NAME_VDO, type ? type : "NULL"); | |
2078 | goto out; | |
2079 | } | |
2080 | ||
dda85902 | 2081 | if (!_vdo_pool_message_stats(dm->mem, lv, *status)) |
55937f9c ZK |
2082 | stack; |
2083 | ||
e6f735d4 | 2084 | if (!parse_vdo_pool_status(dm->mem, lv, params, &info, *status)) |
e689bfb5 | 2085 | goto_out; |
4f708e87 | 2086 | |
e5a60086 | 2087 | (*status)->mem = dm->mem; |
4f708e87 ZK |
2088 | |
2089 | r = 1; | |
2090 | out: | |
2091 | dm_task_destroy(dmt); | |
2092 | ||
2093 | return r; | |
2094 | } | |
2095 | ||
1bed2caf ZK |
2096 | int dev_manager_vdo_pool_size_config(struct dev_manager *dm, |
2097 | const struct logical_volume *lv, | |
2098 | struct vdo_pool_size_config *cfg) | |
2099 | { | |
2100 | const char *dlid; | |
2101 | struct dm_info info; | |
2102 | uint64_t start, length; | |
2103 | struct dm_task *dmt = NULL; | |
2104 | char *type = NULL; | |
2105 | char *params = NULL; | |
2106 | int r = 0; | |
2107 | unsigned version = 0; | |
2108 | ||
2109 | memset(cfg, 0, sizeof(*cfg)); | |
2110 | ||
2111 | if (!(dlid = build_dm_uuid(dm->mem, lv, lv_layer(lv)))) | |
2112 | return_0; | |
2113 | ||
2114 | if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, &info, NULL, dlid, 0, 0, 0, 0, 0, 0))) | |
2115 | return_0; | |
2116 | ||
2117 | if (!info.exists) | |
2118 | goto inactive; /* VDO device is not active, should not happen here... */ | |
2119 | ||
2120 | log_debug_activation("Checking VDO pool table line for LV %s.", | |
2121 | display_lvname(lv)); | |
2122 | ||
2123 | if (dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms)) { | |
2124 | log_error("More then one table line found for %s.", | |
2125 | display_lvname(lv)); | |
2126 | goto out; | |
2127 | } | |
2128 | ||
2129 | if (!type || strcmp(type, TARGET_NAME_VDO)) { | |
2130 | log_error("Expected %s segment type but got %s instead.", | |
2131 | TARGET_NAME_VDO, type ? type : "NULL"); | |
2132 | goto out; | |
2133 | } | |
2134 | ||
2135 | if (sscanf(params, "V%u %*s " FMTu64 " %*u " FMTu32, | |
2136 | &version, &cfg->physical_size, &cfg->block_map_cache_size_mb) != 3) { | |
2137 | log_error("Failed to parse VDO parameters %s for LV %s.", | |
2138 | params, display_lvname(lv)); | |
2139 | goto out; | |
2140 | } | |
2141 | ||
2142 | switch (version) { | |
2143 | case 2: break; | |
2144 | case 4: break; | |
2145 | default: log_warn("WARNING: Unknown VDO table line version %u.", version); | |
2146 | } | |
2147 | ||
2148 | cfg->virtual_size = length; | |
2149 | cfg->physical_size *= 8; // From 4K unit to 512B | |
2150 | cfg->block_map_cache_size_mb /= 256; // From 4K unit to MiB | |
2151 | cfg->index_memory_size_mb = first_seg(lv)->vdo_params.index_memory_size_mb; // Preserved | |
2152 | ||
2153 | inactive: | |
2154 | r = 1; | |
2155 | out: | |
2156 | dm_task_destroy(dmt); | |
2157 | ||
2158 | return r; | |
2159 | } | |
2160 | ||
572983d7 | 2161 | |
5f4b2acf AK |
2162 | /*************************/ |
2163 | /* NEW CODE STARTS HERE */ | |
2164 | /*************************/ | |
2165 | ||
ab9663f3 | 2166 | static int _dev_manager_lv_mknodes(const struct logical_volume *lv) |
5f4b2acf AK |
2167 | { |
2168 | char *name; | |
2169 | ||
e59e2f7c | 2170 | if (!(name = dm_build_dm_name(lv->vg->cmd->mem, lv->vg->name, |
922fccc6 | 2171 | lv->name, NULL))) |
5f4b2acf AK |
2172 | return_0; |
2173 | ||
2174 | return fs_add_lv(lv, name); | |
a76ba817 AK |
2175 | } |
2176 | ||
ab9663f3 | 2177 | static int _dev_manager_lv_rmnodes(const struct logical_volume *lv) |
a9953411 | 2178 | { |
5f4b2acf AK |
2179 | return fs_del_lv(lv); |
2180 | } | |
2181 | ||
458918b3 ZK |
2182 | static int _lv_has_mknode(const struct logical_volume *lv) |
2183 | { | |
2184 | return (lv_is_visible(lv) && | |
2185 | (!lv_is_thin_pool(lv) || lv_is_new_thin_pool(lv))); | |
2186 | } | |
2187 | ||
ab9663f3 MB |
2188 | int dev_manager_mknodes(const struct logical_volume *lv) |
2189 | { | |
2190 | struct dm_info dminfo; | |
114f7e62 | 2191 | struct dm_task *dmt; |
3eadbbeb | 2192 | char *name; |
ab9663f3 MB |
2193 | int r = 0; |
2194 | ||
e59e2f7c | 2195 | if (!(name = dm_build_dm_name(lv->vg->cmd->mem, lv->vg->name, lv->name, NULL))) |
ab9663f3 MB |
2196 | return_0; |
2197 | ||
114f7e62 ZK |
2198 | if (!(dmt = _setup_task_run(DM_DEVICE_MKNODES, &dminfo, name, NULL, 0, 0, 0, 0, 0, 0))) |
2199 | return_0; | |
2200 | ||
2201 | if (dminfo.exists) { | |
eb3597ac ZK |
2202 | /* read-only component LV is also made visible */ |
2203 | if (_lv_has_mknode(lv) || (dminfo.read_only && lv_is_component(lv))) | |
114f7e62 | 2204 | r = _dev_manager_lv_mknodes(lv); |
e3cc3e55 PGTL |
2205 | else |
2206 | r = 1; | |
114f7e62 ZK |
2207 | } else |
2208 | r = _dev_manager_lv_rmnodes(lv); | |
2209 | ||
2210 | dm_task_destroy(dmt); | |
ab9663f3 | 2211 | |
ab9663f3 MB |
2212 | return r; |
2213 | } | |
2214 | ||
44071331 PR |
2215 | #ifdef UDEV_SYNC_SUPPORT |
2216 | /* | |
2217 | * Until the DM_UEVENT_GENERATED_FLAG was introduced in kernel patch | |
2218 | * 856a6f1dbd8940e72755af145ebcd806408ecedd | |
2219 | * some operations could not be performed by udev, requiring our fallback code. | |
2220 | */ | |
2221 | static int _dm_driver_has_stable_udev_support(void) | |
2222 | { | |
2223 | char vsn[80]; | |
2224 | unsigned maj, min, patchlevel; | |
2225 | ||
2226 | return driver_version(vsn, sizeof(vsn)) && | |
2227 | (sscanf(vsn, "%u.%u.%u", &maj, &min, &patchlevel) == 3) && | |
2228 | (maj == 4 ? min >= 18 : maj > 4); | |
2229 | } | |
2230 | ||
2231 | static int _check_udev_fallback(struct cmd_context *cmd) | |
2232 | { | |
2233 | struct config_info *settings = &cmd->current_settings; | |
2234 | ||
2235 | if (settings->udev_fallback != -1) | |
2236 | goto out; | |
2237 | ||
2238 | /* | |
2239 | * Use udev fallback automatically in case udev | |
2240 | * is disabled via DM_DISABLE_UDEV environment | |
2241 | * variable or udev rules are switched off. | |
2242 | */ | |
2243 | settings->udev_fallback = !settings->udev_rules ? 1 : | |
d6a91da4 | 2244 | find_config_tree_bool(cmd, activation_verify_udev_operations_CFG, NULL); |
44071331 PR |
2245 | |
2246 | /* Do not rely fully on udev if the udev support is known to be incomplete. */ | |
2247 | if (!settings->udev_fallback && !_dm_driver_has_stable_udev_support()) { | |
2248 | log_very_verbose("Kernel driver has incomplete udev support so " | |
2249 | "LVM will check and perform some operations itself."); | |
2250 | settings->udev_fallback = 1; | |
2251 | } | |
2252 | out: | |
2253 | return settings->udev_fallback; | |
2254 | } | |
2255 | ||
2256 | #else /* UDEV_SYNC_SUPPORT */ | |
2257 | ||
2258 | static int _check_udev_fallback(struct cmd_context *cmd) | |
2259 | { | |
2260 | /* We must use old node/symlink creation code if not compiled with udev support at all! */ | |
2261 | return cmd->current_settings.udev_fallback = 1; | |
2262 | } | |
2263 | ||
2264 | #endif /* UDEV_SYNC_SUPPORT */ | |
2265 | ||
84cdf85b | 2266 | static uint16_t _get_udev_flags(struct dev_manager *dm, const struct logical_volume *lv, |
eb3597ac ZK |
2267 | const char *layer, int noscan, int temporary, |
2268 | int visible_component) | |
6ddb5ecd PR |
2269 | { |
2270 | uint16_t udev_flags = 0; | |
2271 | ||
418663b6 PR |
2272 | /* |
2273 | * Instruct also libdevmapper to disable udev | |
2274 | * fallback in accordance to LVM2 settings. | |
2275 | */ | |
44071331 | 2276 | if (!_check_udev_fallback(dm->cmd)) |
418663b6 PR |
2277 | udev_flags |= DM_UDEV_DISABLE_LIBRARY_FALLBACK; |
2278 | ||
6ddb5ecd PR |
2279 | /* |
2280 | * Is this top-level and visible device? | |
2281 | * If not, create just the /dev/mapper content. | |
2282 | */ | |
5cc2f9a2 | 2283 | /* FIXME: add target's method for this */ |
eb3597ac | 2284 | if (lv_is_new_thin_pool(lv) || visible_component) |
00a45ca4 ZK |
2285 | /* New thin-pool is regular LV with -tpool UUID suffix. */ |
2286 | udev_flags |= DM_UDEV_DISABLE_DISK_RULES_FLAG | | |
2287 | DM_UDEV_DISABLE_OTHER_RULES_FLAG; | |
6612d8dd | 2288 | else if (layer || !lv_is_visible(lv) || lv_is_thin_pool(lv) || lv_is_vdo_pool(lv)) |
6ddb5ecd PR |
2289 | udev_flags |= DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG | |
2290 | DM_UDEV_DISABLE_DISK_RULES_FLAG | | |
2291 | DM_UDEV_DISABLE_OTHER_RULES_FLAG; | |
2292 | /* | |
2293 | * There's no need for other udev rules to touch special LVs with | |
2294 | * reserved names. We don't need to populate /dev/disk here either. | |
2295 | * Even if they happen to be visible and top-level. | |
2296 | */ | |
2297 | else if (is_reserved_lvname(lv->name)) | |
2298 | udev_flags |= DM_UDEV_DISABLE_DISK_RULES_FLAG | | |
2299 | DM_UDEV_DISABLE_OTHER_RULES_FLAG; | |
2300 | ||
2301 | /* | |
2302 | * Snapshots and origins could have the same rule applied that will | |
2303 | * give symlinks exactly the same name (e.g. a name based on | |
2304 | * filesystem UUID). We give preference to origins to make such | |
2305 | * naming deterministic (e.g. symlinks in /dev/disk/by-uuid). | |
2306 | */ | |
2307 | if (lv_is_cow(lv)) | |
2308 | udev_flags |= DM_UDEV_LOW_PRIORITY_FLAG; | |
2309 | ||
2310 | /* | |
2311 | * Finally, add flags to disable /dev/mapper and /dev/<vgname> content | |
2312 | * to be created by udev if it is requested by user's configuration. | |
2313 | * This is basically an explicit fallback to old node/symlink creation | |
2314 | * without udev. | |
2315 | */ | |
2316 | if (!dm->cmd->current_settings.udev_rules) | |
2317 | udev_flags |= DM_UDEV_DISABLE_DM_RULES_FLAG | | |
2318 | DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG; | |
2319 | ||
ce7489ed | 2320 | /* |
039bdad7 | 2321 | * LVM subsystem specific flags. |
ce7489ed | 2322 | */ |
039bdad7 PR |
2323 | if (noscan) |
2324 | udev_flags |= DM_SUBSYSTEM_UDEV_FLAG0; | |
2325 | ||
2326 | if (temporary) | |
2327 | udev_flags |= DM_UDEV_DISABLE_DISK_RULES_FLAG | | |
2328 | DM_UDEV_DISABLE_OTHER_RULES_FLAG; | |
ce7489ed | 2329 | |
6ddb5ecd PR |
2330 | return udev_flags; |
2331 | } | |
2332 | ||
2a6981a6 ZK |
2333 | static int _add_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, |
2334 | const struct logical_volume *lv, int origin_only); | |
0451225c ZK |
2335 | static int _add_new_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, |
2336 | const struct logical_volume *lv, | |
2337 | struct lv_activate_opts *laopts, | |
2338 | const char *layer); | |
2339 | /* | |
2340 | * Check for device holders (ATM used only for removed pvmove targets) | |
2341 | * and add them into dtree structures. | |
2342 | * When 'laopts != NULL' add them as new nodes - which also corrects READ_AHEAD. | |
39b7d1ba | 2343 | * Note: correct table are already explicitly PRELOADED. |
0451225c | 2344 | */ |
8c6fd093 | 2345 | static int _check_holder(struct dev_manager *dm, struct dm_tree *dtree, |
0451225c ZK |
2346 | const struct logical_volume *lv, |
2347 | struct lv_activate_opts *laopts, | |
2348 | uint32_t major, const char *d_name) | |
2a6981a6 ZK |
2349 | { |
2350 | const char *default_uuid_prefix = dm_uuid_prefix(); | |
2351 | const size_t default_uuid_prefix_len = strlen(default_uuid_prefix); | |
8c6fd093 ZK |
2352 | const char *name; |
2353 | const char *uuid; | |
2354 | struct dm_info info; | |
2355 | struct dm_task *dmt; | |
2a6981a6 | 2356 | struct logical_volume *lv_det; |
8c6fd093 ZK |
2357 | union lvid id; |
2358 | int dev, r = 0; | |
2a6981a6 | 2359 | |
8c6fd093 ZK |
2360 | errno = 0; |
2361 | dev = strtoll(d_name + 3, NULL, 10); | |
2362 | if (errno) { | |
2363 | log_error("Failed to parse dm device minor number from %s.", d_name); | |
2a6981a6 ZK |
2364 | return 0; |
2365 | } | |
2366 | ||
8c6fd093 ZK |
2367 | if (!(dmt = _setup_task_run(DM_DEVICE_INFO, &info, NULL, NULL, NULL, |
2368 | major, dev, 0, 0, 0))) | |
2369 | return_0; | |
2a6981a6 | 2370 | |
8c6fd093 ZK |
2371 | if (info.exists) { |
2372 | uuid = dm_task_get_uuid(dmt); | |
2373 | name = dm_task_get_name(dmt); | |
2a6981a6 | 2374 | |
8c6fd093 ZK |
2375 | log_debug_activation("Checking holder of %s %s (" FMTu32 ":" FMTu32 ") %s.", |
2376 | display_lvname(lv), uuid, info.major, info.minor, | |
2377 | name); | |
2a6981a6 | 2378 | |
8c6fd093 | 2379 | /* Skip common uuid prefix */ |
2a6981a6 ZK |
2380 | if (!strncmp(default_uuid_prefix, uuid, default_uuid_prefix_len)) |
2381 | uuid += default_uuid_prefix_len; | |
2382 | ||
96b77716 | 2383 | if (!memcmp(uuid, &lv->vg->id, ID_LEN) && |
2a6981a6 | 2384 | !dm_tree_find_node_by_uuid(dtree, uuid)) { |
c1703845 | 2385 | /* trims any UUID suffix (i.e. -cow) */ |
995ff589 | 2386 | dm_strncpy((char*)&id, uuid, 2 * sizeof(struct id) + 1); |
8c6fd093 | 2387 | |
2a6981a6 | 2388 | /* If UUID is not yet in dtree, look for matching LV */ |
8c6fd093 ZK |
2389 | if (!(lv_det = find_lv_in_vg_by_lvid(lv->vg, &id))) { |
2390 | log_error("Cannot find holder with device name %s in VG %s.", | |
2391 | name, lv->vg->name); | |
2a6981a6 ZK |
2392 | goto out; |
2393 | } | |
2394 | ||
2395 | if (lv_is_cow(lv_det)) | |
2396 | lv_det = origin_from_cow(lv_det); | |
2397 | log_debug_activation("Found holder %s of %s.", | |
2398 | display_lvname(lv_det), | |
2399 | display_lvname(lv)); | |
0451225c ZK |
2400 | if (!laopts) { |
2401 | if (!_add_lv_to_dtree(dm, dtree, lv_det, 0)) | |
2402 | goto_out; | |
2403 | } else if (!_add_new_lv_to_dtree(dm, dtree, lv_det, laopts, 0)) | |
2404 | goto_out; | |
2a6981a6 ZK |
2405 | } |
2406 | } | |
2407 | ||
8c6fd093 ZK |
2408 | r = 1; |
2409 | out: | |
2410 | dm_task_destroy(dmt); | |
2411 | ||
2412 | return r; | |
2413 | } | |
2414 | ||
2415 | /* | |
2416 | * Add exiting devices which holds given LV device open. | |
2417 | * This is used in case when metadata already do not contain information | |
2418 | * i.e. PVMOVE is being finished and final table is going to be resumed. | |
2419 | */ | |
2420 | static int _add_holders_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, | |
0451225c ZK |
2421 | const struct logical_volume *lv, |
2422 | struct lv_activate_opts *laopts, | |
2423 | const struct dm_info *info) | |
8c6fd093 ZK |
2424 | { |
2425 | const char *sysfs_dir = dm_sysfs_dir(); | |
2426 | char sysfs_path[PATH_MAX]; | |
2427 | struct dirent *dirent; | |
2428 | DIR *d; | |
2429 | int r = 0; | |
2430 | ||
2431 | /* Sysfs path of holders */ | |
2432 | if (dm_snprintf(sysfs_path, sizeof(sysfs_path), "%sblock/dm-" FMTu32 | |
2433 | "/holders", sysfs_dir, info->minor) < 0) { | |
2434 | log_error("sysfs_path dm_snprintf failed."); | |
2435 | return 0; | |
2436 | } | |
2437 | ||
2438 | if (!(d = opendir(sysfs_path))) { | |
2439 | log_sys_error("opendir", sysfs_path); | |
2440 | return 0; | |
2441 | } | |
2442 | ||
2443 | while ((dirent = readdir(d))) | |
2444 | /* Expects minor is added to 'dm-' prefix */ | |
2445 | if (!strncmp(dirent->d_name, "dm-", 3) && | |
0451225c | 2446 | !_check_holder(dm, dtree, lv, laopts, info->major, dirent->d_name)) |
8c6fd093 ZK |
2447 | goto_out; |
2448 | ||
2a6981a6 ZK |
2449 | r = 1; |
2450 | out: | |
2451 | if (closedir(d)) | |
8c6fd093 | 2452 | log_sys_debug("closedir", "holders"); |
2a6981a6 ZK |
2453 | |
2454 | return r; | |
2455 | } | |
2456 | ||
ad6b0ebb | 2457 | static int _add_dev_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, |
84cdf85b | 2458 | const struct logical_volume *lv, const char *layer) |
5f4b2acf AK |
2459 | { |
2460 | char *dlid, *name; | |
0c8bdaf3 | 2461 | struct dm_info info, info2; |
e30bc9b1 | 2462 | const struct dm_active_device *dm_dev; |
a9953411 | 2463 | |
e59e2f7c | 2464 | if (!(name = dm_build_dm_name(dm->mem, lv->vg->name, lv->name, layer))) |
5f4b2acf | 2465 | return_0; |
a9953411 | 2466 | |
b2885b71 | 2467 | if (!(dlid = build_dm_uuid(dm->track_pending_delete ? dm->cmd->pending_delete_mem : dm->mem, lv, layer))) |
5f4b2acf AK |
2468 | return_0; |
2469 | ||
f8aa073a | 2470 | if (dm_devs_cache_use()) { |
ad1d6887 | 2471 | if (!(dm_dev = dm_devs_cache_get_by_uuid(dm->cmd, dlid))) { |
d4a0816a ZK |
2472 | log_debug("Cached as not present %s.", name); |
2473 | return 1; | |
2474 | } | |
2475 | info = (struct dm_info) { | |
2476 | .exists = 1, | |
e30bc9b1 ZK |
2477 | .major = MAJOR(dm_dev->devno), |
2478 | .minor = MINOR(dm_dev->devno), | |
d4a0816a ZK |
2479 | }; |
2480 | log_debug("Cached as present %s %s (%d:%d).", | |
2481 | name, dlid, info.major, info.minor); | |
2482 | } else if (!_info(dm->cmd, name, dlid, 0, 0, 0, &info, NULL, NULL)) | |
034931f6 | 2483 | return_0; |
0c8bdaf3 MB |
2484 | /* |
2485 | * For top level volumes verify that existing device match | |
2486 | * requested major/minor and that major/minor pair is available for use | |
2487 | */ | |
2488 | if (!layer && lv->major != -1 && lv->minor != -1) { | |
0f817d38 AK |
2489 | /* |
2490 | * FIXME compare info.major with lv->major if multiple major support | |
2491 | */ | |
1be74cfd | 2492 | if (info.exists && ((int) info.minor != lv->minor)) { |
0c8bdaf3 MB |
2493 | log_error("Volume %s (%" PRIu32 ":%" PRIu32")" |
2494 | " differs from already active device " | |
81ef4eb4 | 2495 | "(%" PRIu32 ":%" PRIu32").", |
922fccc6 ZK |
2496 | display_lvname(lv), lv->major, lv->minor, |
2497 | info.major, info.minor); | |
0c8bdaf3 MB |
2498 | return 0; |
2499 | } | |
2500 | if (!info.exists && _info_by_dev(lv->major, lv->minor, &info2) && | |
2501 | info2.exists) { | |
2502 | log_error("The requested major:minor pair " | |
81ef4eb4 | 2503 | "(%" PRIu32 ":%" PRIu32") is already used.", |
0c8bdaf3 MB |
2504 | lv->major, lv->minor); |
2505 | return 0; | |
2506 | } | |
2507 | } | |
2508 | ||
6ddb5ecd | 2509 | if (info.exists && !dm_tree_add_dev_with_udev_flags(dtree, info.major, info.minor, |
eb3597ac ZK |
2510 | _get_udev_flags(dm, lv, layer, |
2511 | 0, 0, 0))) { | |
81ef4eb4 | 2512 | log_error("Failed to add device (%" PRIu32 ":%" PRIu32") to dtree.", |
5f4b2acf AK |
2513 | info.major, info.minor); |
2514 | return 0; | |
a9953411 AK |
2515 | } |
2516 | ||
fba86dd4 | 2517 | if (info.exists && dm->track_pending_delete) { |
9718fd24 ZK |
2518 | log_debug_activation("Tracking pending delete for %s%s%s (%s).", |
2519 | display_lvname(lv), layer ? "-" : "", layer ? : "", dlid); | |
b2885b71 | 2520 | if (!str_list_add(dm->cmd->pending_delete_mem, &dm->cmd->pending_delete, dlid)) |
fba86dd4 ZK |
2521 | return_0; |
2522 | } | |
2523 | ||
2a6981a6 ZK |
2524 | /* |
2525 | * Find holders of existing active LV where name starts with 'pvmove', | |
2526 | * but it's not anymore PVMOVE LV and also it's not PVMOVE _mimage | |
2527 | */ | |
2528 | if (info.exists && !lv_is_pvmove(lv) && | |
2529 | !strchr(lv->name, '_') && !strncmp(lv->name, "pvmove", 6)) | |
0451225c | 2530 | if (!_add_holders_to_dtree(dm, dtree, lv, NULL, &info)) |
2a6981a6 ZK |
2531 | return_0; |
2532 | ||
5f4b2acf AK |
2533 | return 1; |
2534 | } | |
2535 | ||
c0c1ada8 | 2536 | struct pool_cb_data { |
6c7a6c07 | 2537 | struct dev_manager *dm; |
c0c1ada8 ZK |
2538 | const struct logical_volume *pool_lv; |
2539 | ||
2540 | int skip_zero; /* to skip zeroed device header (check first 64B) */ | |
2541 | int exec; /* which binary to call */ | |
2542 | int opts; | |
689af323 ZK |
2543 | struct { |
2544 | unsigned maj; | |
2545 | unsigned min; | |
2546 | unsigned patch; | |
2547 | } version; | |
c0c1ada8 | 2548 | const char *global; |
6c7a6c07 ZK |
2549 | }; |
2550 | ||
689af323 ZK |
2551 | /* |
2552 | * Simple version of check function calling 'tool -V' | |
2553 | * | |
2554 | * Returns 1 if the tool's version is equal or better to given. | |
2555 | * Otherwise it returns 0. | |
2556 | */ | |
2557 | static int _check_tool_version(struct cmd_context *cmd, const char *tool, | |
2558 | unsigned maj, unsigned min, unsigned patch) | |
2559 | { | |
2560 | const char *argv[] = { tool, "-V", NULL }; | |
2561 | struct pipe_data pdata; | |
2562 | FILE *f; | |
2563 | char buf[128] = { 0 }; | |
2564 | char *nl; | |
2565 | unsigned v_maj, v_min, v_patch; | |
2566 | int ret = 0; | |
2567 | ||
2568 | if (!(f = pipe_open(cmd, argv, 0, &pdata))) { | |
2569 | log_warn("WARNING: Cannot read output from %s.", argv[0]); | |
2570 | } else { | |
2571 | if (fgets(buf, sizeof(buf) - 1, f) && | |
2572 | (sscanf(buf, "%u.%u.%u", &v_maj, &v_min, &v_patch) == 3)) { | |
2573 | if ((v_maj > maj) || | |
2574 | ((v_maj == maj) && | |
2575 | ((v_min > min) || | |
2576 | (v_min == min && v_patch >= patch)))) | |
2577 | ret = 1; | |
2578 | ||
2579 | if ((nl = strchr(buf, '\n'))) | |
2580 | nl[0] = 0; /* cut newline away */ | |
2581 | ||
2582 | log_verbose("Found version of %s %s is %s then requested %u.%u.%u.", | |
2583 | argv[0], buf, ret ? "better" : "older", maj, min, patch); | |
2584 | } else | |
2585 | log_warn("WARNING: Cannot parse output '%s' from %s.", buf, argv[0]); | |
2586 | ||
2587 | (void) pipe_close(&pdata); | |
2588 | } | |
2589 | ||
2590 | return ret; | |
2591 | } | |
2592 | ||
c0c1ada8 ZK |
2593 | static int _pool_callback(struct dm_tree_node *node, |
2594 | dm_node_callback_t type, void *cb_data) | |
6c7a6c07 | 2595 | { |
0c9e3e8d | 2596 | int ret, status = 0, fd; |
c0c1ada8 ZK |
2597 | const struct pool_cb_data *data = cb_data; |
2598 | const struct logical_volume *pool_lv = data->pool_lv; | |
2599 | const struct logical_volume *mlv = first_seg(pool_lv)->metadata_lv; | |
9fe7aba2 | 2600 | struct cmd_context *cmd = pool_lv->vg->cmd; |
c0c1ada8 | 2601 | long buf[64 / sizeof(long)]; /* buffer for short disk header (64B) */ |
e8669311 | 2602 | int args = 0; |
f173274f | 2603 | char *mpath; |
4d231165 | 2604 | const char *argv[DEFAULT_MAX_EXEC_ARGS + 7] = { /* Max supported 15 args */ |
9fe7aba2 | 2605 | find_config_tree_str_allow_empty(cmd, data->exec, NULL) |
71485ebf ZK |
2606 | }; |
2607 | ||
4d231165 | 2608 | if (!argv[0] || !*argv[0]) /* *_check tool is unconfigured/disabled with "" setting */ |
71485ebf | 2609 | return 1; |
6c7a6c07 | 2610 | |
9fe7aba2 DT |
2611 | if (lv_is_cache_vol(pool_lv)) { |
2612 | if (!(mpath = lv_dmpath_suffix_dup(data->dm->mem, pool_lv, "-cmeta"))) { | |
2613 | log_error("Failed to build device path for checking cachevol metadata %s.", | |
2614 | display_lvname(pool_lv)); | |
2615 | return 0; | |
2616 | } | |
2617 | } else { | |
2618 | if (!(mpath = lv_dmpath_dup(data->dm->mem, mlv))) { | |
2619 | log_error("Failed to build device path for checking pool metadata %s.", | |
2620 | display_lvname(mlv)); | |
2621 | return 0; | |
2622 | } | |
f173274f | 2623 | } |
04fbffb1 | 2624 | |
f8aa073a | 2625 | dm_devs_cache_destroy(); |
04fbffb1 | 2626 | |
9fe7aba2 | 2627 | log_debug("Running check command on %s", mpath); |
f173274f ZK |
2628 | |
2629 | if (data->skip_zero) { | |
2630 | if ((fd = open(mpath, O_RDONLY)) < 0) { | |
2631 | log_sys_error("open", mpath); | |
2632 | return 0; | |
2633 | } | |
2634 | /* let's assume there is no problem to read 64 bytes */ | |
2635 | if (read(fd, buf, sizeof(buf)) < (int)sizeof(buf)) { | |
2636 | log_sys_error("read", mpath); | |
2637 | if (close(fd)) | |
2638 | log_sys_error("close", mpath); | |
2639 | return 0; | |
2640 | } | |
2641 | for (ret = 0; ret < (int) DM_ARRAY_SIZE(buf); ++ret) | |
2642 | if (buf[ret]) | |
2643 | break; | |
2644 | ||
2645 | if (close(fd)) | |
2646 | log_sys_error("close", mpath); | |
2647 | ||
2648 | if (ret == (int) DM_ARRAY_SIZE(buf)) { | |
2649 | log_debug_activation("Metadata checking skipped, detected empty disk header on %s.", | |
2650 | mpath); | |
2651 | return 1; | |
2652 | } | |
2653 | } | |
2654 | ||
4d231165 ZK |
2655 | if (!prepare_exec_args(cmd, argv, &args, data->opts)) |
2656 | return_0; | |
e8669311 | 2657 | |
f173274f | 2658 | argv[++args] = mpath; |
c0c1ada8 | 2659 | |
9fe7aba2 | 2660 | if (!(ret = exec_cmd(cmd, (const char * const *)argv, |
6c7a6c07 | 2661 | &status, 0))) { |
689af323 | 2662 | if (status == ENOENT) { |
4e0c0417 | 2663 | log_warn("WARNING: Check is skipped, please install recommended missing binary %s!", |
689af323 ZK |
2664 | argv[0]); |
2665 | return 1; | |
2666 | } | |
2667 | ||
2668 | if ((data->version.maj || data->version.min || data->version.patch) && | |
9fe7aba2 | 2669 | !_check_tool_version(cmd, argv[0], |
689af323 ZK |
2670 | data->version.maj, data->version.min, data->version.patch)) { |
2671 | log_warn("WARNING: Check is skipped, please upgrade installed version of %s!", | |
2672 | argv[0]); | |
2673 | return 1; | |
2674 | } | |
975b5b42 ZK |
2675 | switch (type) { |
2676 | case DM_NODE_CALLBACK_PRELOADED: | |
c0c1ada8 ZK |
2677 | log_err_once("Check of pool %s failed (status:%d). " |
2678 | "Manual repair required!", | |
2679 | display_lvname(pool_lv), status); | |
975b5b42 ZK |
2680 | break; |
2681 | default: | |
c0c1ada8 ZK |
2682 | log_warn("WARNING: Integrity check of metadata for pool " |
2683 | "%s failed.", display_lvname(pool_lv)); | |
975b5b42 | 2684 | } |
6c7a6c07 ZK |
2685 | /* |
2686 | * FIXME: What should we do here?? | |
2687 | * | |
2688 | * Maybe mark the node, so it's not activating | |
c0c1ada8 | 2689 | * as pool but as error/linear and let the |
6c7a6c07 ZK |
2690 | * dm tree resolve the issue. |
2691 | */ | |
2692 | } | |
2693 | ||
6c7a6c07 ZK |
2694 | return ret; |
2695 | } | |
2696 | ||
c0c1ada8 ZK |
2697 | static int _pool_register_callback(struct dev_manager *dm, |
2698 | struct dm_tree_node *node, | |
2699 | const struct logical_volume *lv) | |
6c7a6c07 | 2700 | { |
c0c1ada8 | 2701 | struct pool_cb_data *data; |
6c7a6c07 | 2702 | |
ee627884 ZK |
2703 | /* Do not skip metadata of testing even for unused thin pools */ |
2704 | #if 0 | |
c0c1ada8 ZK |
2705 | /* Skip metadata testing for unused thin pool. */ |
2706 | if (lv_is_thin_pool(lv) && | |
2707 | (!first_seg(lv)->transaction_id || | |
2708 | ((first_seg(lv)->transaction_id == 1) && | |
2709 | pool_has_message(first_seg(lv), NULL, 0)))) | |
6c7a6c07 | 2710 | return 1; |
ee627884 | 2711 | #endif |
d6df31fb ZK |
2712 | /* Skip validation of metadata for lvremove and vgremove */ |
2713 | if (!dm->activation && | |
2714 | (!strcmp(dm->cmd->name, "lvremove") || | |
2715 | !strcmp(dm->cmd->name, "vgremove"))) { | |
2716 | log_debug("Skipping %s callback registration for command %s.", | |
2717 | display_lvname(lv), dm->cmd->name); | |
2718 | return 1; | |
2719 | } | |
6c7a6c07 | 2720 | |
c0c1ada8 | 2721 | if (!(data = dm_pool_zalloc(dm->mem, sizeof(*data)))) { |
6c7a6c07 ZK |
2722 | log_error("Failed to allocated path for callback."); |
2723 | return 0; | |
2724 | } | |
2725 | ||
2726 | data->dm = dm; | |
6c7a6c07 | 2727 | |
c0c1ada8 ZK |
2728 | if (lv_is_thin_pool(lv)) { |
2729 | data->pool_lv = lv; | |
2730 | data->skip_zero = 1; | |
2731 | data->exec = global_thin_check_executable_CFG; | |
2732 | data->opts = global_thin_check_options_CFG; | |
c0c1ada8 ZK |
2733 | data->global = "thin"; |
2734 | } else if (lv_is_cache(lv)) { /* cache pool */ | |
2735 | data->pool_lv = first_seg(lv)->pool_lv; | |
293aabe4 | 2736 | data->skip_zero = 1; /* cheap read-error detection */ |
c0c1ada8 ZK |
2737 | data->exec = global_cache_check_executable_CFG; |
2738 | data->opts = global_cache_check_options_CFG; | |
c0c1ada8 | 2739 | data->global = "cache"; |
689af323 ZK |
2740 | if (first_seg(first_seg(lv)->pool_lv)->cache_metadata_format > 1) { |
2741 | data->version.maj = 0; | |
2742 | data->version.min = 7; | |
2743 | } | |
c0c1ada8 ZK |
2744 | } else { |
2745 | log_error(INTERNAL_ERROR "Registering unsupported pool callback."); | |
2746 | return 0; | |
2747 | } | |
2748 | ||
2749 | dm_tree_node_set_callback(node, _pool_callback, data); | |
6c7a6c07 ZK |
2750 | |
2751 | return 1; | |
2752 | } | |
2753 | ||
50b188ee ZK |
2754 | static struct id _get_id_for_meta_or_data(const struct lv_segment *lvseg, int meta_or_data) |
2755 | { | |
2756 | /* When ID is provided in form of metadata_id or data_id, otherwise use CVOL ID */ | |
2757 | if (meta_or_data && lvseg->metadata_id) | |
2758 | return *lvseg->metadata_id; | |
2759 | ||
2760 | if (!meta_or_data && lvseg->data_id) | |
2761 | return *lvseg->data_id; | |
2762 | ||
2763 | return lvseg->pool_lv->lvid.id[1]; | |
2764 | } | |
2765 | ||
2825ad9d ZK |
2766 | /* Add special devices _cmeta & _cdata on top of CacheVol to dm tree */ |
2767 | static int _add_cvol_subdev_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, | |
2768 | const struct logical_volume *lv, int meta_or_data) | |
2769 | { | |
2770 | const char *layer = meta_or_data ? "cmeta" : "cdata"; | |
2771 | struct dm_pool *mem = dm->track_pending_delete ? dm->cmd->pending_delete_mem : dm->mem; | |
2825ad9d | 2772 | struct lv_segment *lvseg = first_seg(lv); |
50b188ee | 2773 | const struct logical_volume *pool_lv = lvseg->pool_lv; |
2825ad9d ZK |
2774 | struct dm_info info; |
2775 | char *name ,*dlid; | |
50b188ee | 2776 | union lvid lvid = { { lv->vg->id, _get_id_for_meta_or_data(lvseg, meta_or_data) } }; |
2825ad9d ZK |
2777 | |
2778 | if (!(dlid = dm_build_dm_uuid(mem, UUID_PREFIX, (const char *)&lvid.s, layer))) | |
2779 | return_0; | |
2780 | ||
2781 | /* Name is actually not really needed here, but aids debugging... */ | |
2782 | if (!(name = dm_build_dm_name(dm->mem, lv->vg->name, pool_lv->name, layer))) | |
2783 | return_0; | |
2784 | ||
622884d6 | 2785 | if (!_info(dm->cmd, name, dlid, 0, 0, 0, &info, NULL, NULL)) |
2825ad9d ZK |
2786 | return_0; |
2787 | ||
2788 | if (info.exists) { | |
2789 | if (!dm_tree_add_dev_with_udev_flags(dtree, info.major, info.minor, | |
2790 | _get_udev_flags(dm, lv, layer, 0, 0, 0))) { | |
2791 | log_error("Failed to add device (%" PRIu32 ":%" PRIu32") to dtree.", info.major, info.minor); | |
2792 | return 0; | |
2793 | } | |
2794 | if (dm->track_pending_delete) { | |
9718fd24 ZK |
2795 | log_debug_activation("Tracking pending delete for %s-%s (%s).", |
2796 | display_lvname(pool_lv), layer, dlid); | |
2825ad9d ZK |
2797 | if (!str_list_add(mem, &dm->cmd->pending_delete, dlid)) |
2798 | return_0; | |
2799 | } | |
2800 | } | |
2801 | ||
2802 | return 1; | |
2803 | } | |
2804 | ||
a900d150 ZK |
2805 | /* Declaration to resolve suspend tree and message passing for thin-pool */ |
2806 | static int _add_target_to_dtree(struct dev_manager *dm, | |
2807 | struct dm_tree_node *dnode, | |
2808 | struct lv_segment *seg, | |
2809 | struct lv_activate_opts *laopts); | |
5f4b2acf AK |
2810 | /* |
2811 | * Add LV and any known dependencies | |
2812 | */ | |
ff58e019 | 2813 | static int _add_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, |
84cdf85b | 2814 | const struct logical_volume *lv, int origin_only) |
5f4b2acf | 2815 | { |
ff58e019 | 2816 | uint32_t s; |
df390f17 | 2817 | struct seg_list *sl; |
3679bb1c | 2818 | struct dm_list *snh; |
dd4fdce1 | 2819 | struct lv_segment *seg; |
c0c1ada8 | 2820 | struct dm_tree_node *node; |
91974437 | 2821 | const struct logical_volume *plv; |
df390f17 | 2822 | |
7e794b77 ZK |
2823 | if (lv_is_pvmove(lv) && (dm->track_pvmove_deps == 2)) |
2824 | return 1; /* Avoid rechecking of already seen pvmove LV */ | |
2825 | ||
a018c57f | 2826 | if (lv_is_cache_pool(lv)) { |
29bd3ccc | 2827 | if (!dm_list_empty(&lv->segs_using_this_lv)) { |
29bd3ccc ZK |
2828 | if (!_add_lv_to_dtree(dm, dtree, seg_lv(first_seg(lv), 0), 0)) |
2829 | return_0; | |
2830 | if (!_add_lv_to_dtree(dm, dtree, first_seg(lv)->metadata_lv, 0)) | |
2831 | return_0; | |
8121074f ZK |
2832 | /* Cache pool does not have a real device node */ |
2833 | return 1; | |
2834 | } | |
2835 | /* Unused cache pool is activated as metadata */ | |
a018c57f ZK |
2836 | } |
2837 | ||
9f433e6e | 2838 | if (!origin_only && !_add_dev_to_dtree(dm, dtree, lv, NULL)) |
5f4b2acf AK |
2839 | return_0; |
2840 | ||
2841 | /* FIXME Can we avoid doing this every time? */ | |
87331dc4 | 2842 | /* Reused also for lv_is_external_origin(lv) */ |
ad6b0ebb | 2843 | if (!_add_dev_to_dtree(dm, dtree, lv, "real")) |
5f4b2acf AK |
2844 | return_0; |
2845 | ||
2d6fcbf6 | 2846 | if (!origin_only && !_add_dev_to_dtree(dm, dtree, lv, "cow")) |
5f4b2acf | 2847 | return_0; |
a9953411 | 2848 | |
3679bb1c | 2849 | if (origin_only && lv_is_thin_volume(lv)) { |
97d36d57 | 2850 | if (!_add_dev_to_dtree(dm, dtree, lv, lv_layer(lv))) |
3679bb1c ZK |
2851 | return_0; |
2852 | #if 0 | |
2853 | /* ? Use origin_only to avoid 'deep' thin pool suspend ? */ | |
55d90b64 | 2854 | /* FIXME Implement dm_tree_node_skip_childrens optimisation */ |
6a0d97a6 | 2855 | if (!(uuid = build_dm_uuid(dm->mem, lv, lv_layer(lv)))) |
3679bb1c | 2856 | return_0; |
c0c1ada8 ZK |
2857 | if ((node = dm_tree_find_node_by_uuid(dtree, uuid))) |
2858 | dm_tree_node_skip_childrens(node, 1); | |
3679bb1c ZK |
2859 | #endif |
2860 | } | |
2861 | ||
457bd139 | 2862 | if (dm->activation && lv_is_external_origin(lv)) { |
9a060948 | 2863 | /* Find possible users of external origin lv */ |
9a060948 | 2864 | dm_list_iterate_items(sl, &lv->segs_using_this_lv) |
457bd139 | 2865 | if (!_add_dev_to_dtree(dm, dtree, sl->seg->lv, lv_layer(sl->seg->lv))) |
9a060948 | 2866 | return_0; |
9a060948 ZK |
2867 | } |
2868 | ||
3679bb1c | 2869 | if (lv_is_thin_pool(lv)) { |
9a060948 ZK |
2870 | /* |
2871 | * For both origin_only and !origin_only | |
2872 | * skips test for -tpool-real and tpool-cow | |
2873 | */ | |
3679bb1c ZK |
2874 | if (!_add_dev_to_dtree(dm, dtree, lv, lv_layer(lv))) |
2875 | return_0; | |
a900d150 ZK |
2876 | |
2877 | /* | |
2878 | * TODO: change API and move this code | |
2879 | * Could be easier to handle this in _add_dev_to_dtree() | |
2880 | * and base this according to info.exists ? | |
2881 | */ | |
9a060948 | 2882 | if (!dm->activation) { |
363e8888 | 2883 | if ((node = _cached_dm_tree_node(dm->mem, dtree, lv, lv_layer(lv)))) { |
a900d150 ZK |
2884 | if (origin_only) { |
2885 | struct lv_activate_opts laopts = { | |
2886 | .origin_only = 1, | |
2887 | .send_messages = 1 /* Node with messages */ | |
2888 | }; | |
2889 | /* | |
39b7d1ba | 2890 | * Add some messages if right node exist in the table only |
a900d150 ZK |
2891 | * when building SUSPEND tree for origin-only thin-pool. |
2892 | * | |
2893 | * TODO: Fix call of '_add_target_to_dtree()' to add message | |
2894 | * to thin-pool node as we already know the pool node exists | |
2895 | * in the table. Any better/cleaner API way ? | |
2896 | * | |
2897 | * Probably some 'new' target method to add messages for any node? | |
2898 | */ | |
2899 | if (dm->suspend && | |
2900 | !dm_list_empty(&(first_seg(lv)->thin_messages)) && | |
2901 | !_add_target_to_dtree(dm, node, first_seg(lv), &laopts)) | |
2902 | return_0; | |
2903 | } else { | |
2904 | /* Setup callback for non-activation partial tree */ | |
2905 | /* Activation gets own callback when needed */ | |
2906 | /* TODO: extend _cached_dm_info() to return dnode */ | |
2907 | if (!_pool_register_callback(dm, node, lv)) | |
2908 | return_0; | |
2909 | } | |
2910 | } | |
c0c1ada8 ZK |
2911 | } |
2912 | } | |
2913 | ||
6612d8dd ZK |
2914 | if (lv_is_vdo_pool(lv)) { |
2915 | /* | |
2916 | * For both origin_only and !origin_only | |
2917 | * skips test for -vpool-real and vpool-cow | |
2918 | */ | |
2919 | if (!_add_dev_to_dtree(dm, dtree, lv, lv_layer(lv))) | |
2920 | return_0; | |
2921 | } | |
2922 | ||
f5e265a0 | 2923 | if (lv_is_cache(lv)) { |
fba86dd4 | 2924 | if (!origin_only && !dm->activation && !dm->track_pending_delete) { |
c0c1ada8 ZK |
2925 | /* Setup callback for non-activation partial tree */ |
2926 | /* Activation gets own callback when needed */ | |
363e8888 | 2927 | if ((node = _cached_dm_tree_node(dm->mem, dtree, lv, lv_layer(lv))) && |
c0c1ada8 | 2928 | !_pool_register_callback(dm, node, lv)) |
9a060948 ZK |
2929 | return_0; |
2930 | } | |
3679bb1c | 2931 | } |
2f1489a6 | 2932 | |
ad582da3 ZK |
2933 | if (lv_is_cache_vol(lv)) |
2934 | /* Cachevol with cache LV spans some extra layers -cdata, -cmeta */ | |
2935 | dm_list_iterate_items(sl, &lv->segs_using_this_lv) | |
2936 | if (lv_is_cache(sl->seg->lv) && | |
2937 | (!_add_cvol_subdev_to_dtree(dm, dtree, sl->seg->lv, 0) || | |
2938 | !_add_cvol_subdev_to_dtree(dm, dtree, sl->seg->lv, 1) || | |
2939 | !_add_dev_to_dtree(dm, dtree, lv, lv_layer(lv)))) | |
2940 | return_0; | |
2941 | ||
3679bb1c | 2942 | /* Add any snapshots of this LV */ |
9a060948 | 2943 | if (!origin_only && lv_is_origin(lv)) |
3679bb1c ZK |
2944 | dm_list_iterate(snh, &lv->snapshot_segs) |
2945 | if (!_add_lv_to_dtree(dm, dtree, dm_list_struct_base(snh, struct lv_segment, origin_list)->cow, 0)) | |
ff58e019 | 2946 | return_0; |
9c083d34 | 2947 | |
664a6955 ZK |
2948 | if (dm->activation && !origin_only && lv_is_merging_origin(lv) && |
2949 | !_add_lv_to_dtree(dm, dtree, find_snapshot(lv)->lv, 1)) | |
2950 | return_0; | |
ff58e019 | 2951 | |
df390f17 | 2952 | /* Add any LVs referencing a PVMOVE LV unless told not to. */ |
7e794b77 ZK |
2953 | if ((dm->track_pvmove_deps == 1) && lv_is_pvmove(lv)) { |
2954 | dm->track_pvmove_deps = 2; /* Mark as already seen */ | |
91974437 ZK |
2955 | dm_list_iterate_items(sl, &lv->segs_using_this_lv) { |
2956 | /* If LV is snapshot COW - whole snapshot needs reload */ | |
2957 | plv = lv_is_cow(sl->seg->lv) ? origin_from_cow(sl->seg->lv) : sl->seg->lv; | |
2958 | if (!_add_lv_to_dtree(dm, dtree, plv, 0)) | |
df390f17 | 2959 | return_0; |
91974437 | 2960 | } |
c0f98794 AK |
2961 | dm->track_pvmove_deps = 1; |
2962 | } | |
df390f17 | 2963 | |
fba86dd4 ZK |
2964 | if (!dm->track_pending_delete) |
2965 | dm_list_iterate_items(sl, &lv->segs_using_this_lv) { | |
2966 | if (lv_is_pending_delete(sl->seg->lv)) { | |
2967 | /* LV is referenced by 'cache pending delete LV */ | |
2968 | dm->track_pending_delete = 1; | |
b47b66eb ZK |
2969 | if (!_cached_dm_tree_node(dm->mem, dtree, sl->seg->lv, lv_layer(sl->seg->lv)) && |
2970 | !_add_lv_to_dtree(dm, dtree, sl->seg->lv, 0)) | |
fba86dd4 ZK |
2971 | return_0; |
2972 | dm->track_pending_delete = 0; | |
2973 | } | |
f5e265a0 | 2974 | } |
f5e265a0 | 2975 | |
3679bb1c ZK |
2976 | /* Add any LVs used by segments in this LV */ |
2977 | dm_list_iterate_items(seg, &lv->segments) { | |
457bd139 ZK |
2978 | if (seg->external_lv && |
2979 | !_add_lv_to_dtree(dm, dtree, seg->external_lv, | |
2980 | /* For origin LV check for complete device tree */ | |
2981 | lv_is_origin(seg->external_lv) ? 0 : 1)) /* stack */ | |
87331dc4 | 2982 | return_0; |
3679bb1c | 2983 | if (seg->log_lv && |
0443c42e | 2984 | !_add_lv_to_dtree(dm, dtree, seg->log_lv, 0)) |
a0c4e85c | 2985 | return_0; |
3679bb1c | 2986 | if (seg->metadata_lv && |
0443c42e | 2987 | !_add_lv_to_dtree(dm, dtree, seg->metadata_lv, 0)) |
6c7a6c07 | 2988 | return_0; |
3ae55695 DT |
2989 | if (seg->writecache && seg_is_writecache(seg)) { |
2990 | if (!_add_lv_to_dtree(dm, dtree, seg->writecache, dm->activation ? origin_only : 1)) | |
2991 | return_0; | |
2992 | } | |
d9e8895a DT |
2993 | if (seg->integrity_meta_dev && seg_is_integrity(seg)) { |
2994 | if (!_add_lv_to_dtree(dm, dtree, seg->integrity_meta_dev, dm->activation ? origin_only : 1)) | |
2995 | return_0; | |
2996 | } | |
a018c57f | 2997 | if (seg->pool_lv && |
0285066e ZK |
2998 | /* When activating and not origin_only detect linear 'overlay' over pool */ |
2999 | !_add_lv_to_dtree(dm, dtree, seg->pool_lv, dm->activation ? origin_only : 1)) | |
6c7a6c07 | 3000 | return_0; |
3679bb1c ZK |
3001 | |
3002 | for (s = 0; s < seg->area_count; s++) { | |
3679bb1c | 3003 | if (seg_type(seg, s) == AREA_LV && seg_lv(seg, s) && |
fba86dd4 ZK |
3004 | /* origin only for cache without pending delete */ |
3005 | (!dm->track_pending_delete || !lv_is_cache(lv)) && | |
6612d8dd | 3006 | !_add_lv_to_dtree(dm, dtree, seg_lv(seg, s), |
af33a008 | 3007 | lv_is_vdo_pool(seg_lv(seg, s)) ? 1 : 0)) |
3679bb1c | 3008 | return_0; |
b896f7de | 3009 | if (seg_is_raid_with_meta(seg) && seg->meta_areas && seg_metalv(seg, s) && |
af33a008 | 3010 | !_add_lv_to_dtree(dm, dtree, seg_metalv(seg, s), 0)) |
3679bb1c ZK |
3011 | return_0; |
3012 | } | |
664a6955 ZK |
3013 | |
3014 | /* When activating, detect merging LV presence */ | |
3015 | if (dm->activation && seg->merge_lv && | |
3016 | !_add_lv_to_dtree(dm, dtree, seg->merge_lv, 1)) | |
3017 | return_0; | |
efc8ca10 | 3018 | } |
87663d5f | 3019 | |
a9953411 AK |
3020 | return 1; |
3021 | } | |
3022 | ||
84cdf85b | 3023 | static struct dm_tree *_create_partial_dtree(struct dev_manager *dm, const struct logical_volume *lv, int origin_only) |
22456547 | 3024 | { |
e88f56d9 | 3025 | struct dm_tree *dtree; |
22456547 | 3026 | |
e88f56d9 | 3027 | if (!(dtree = dm_tree_create())) { |
922fccc6 ZK |
3028 | log_debug_activation("Partial dtree creation failed for %s.", |
3029 | display_lvname(lv)); | |
5f4b2acf AK |
3030 | return NULL; |
3031 | } | |
22456547 | 3032 | |
eae0314b | 3033 | dm_tree_set_optional_uuid_suffixes(dtree, (const char**)_uuid_suffix_list); |
7cff640d | 3034 | |
a900d150 | 3035 | if (!_add_lv_to_dtree(dm, dtree, lv, (lv_is_origin(lv) || lv_is_thin_volume(lv) || lv_is_thin_pool(lv)) ? origin_only : 0)) |
c51b9fff | 3036 | goto_bad; |
22456547 | 3037 | |
5f4b2acf | 3038 | return dtree; |
22456547 | 3039 | |
c51b9fff | 3040 | bad: |
e88f56d9 | 3041 | dm_tree_free(dtree); |
5f4b2acf | 3042 | return NULL; |
22456547 AK |
3043 | } |
3044 | ||
d8fc4d09 ZK |
3045 | static char *_add_error_or_zero_device(struct dev_manager *dm, struct dm_tree *dtree, |
3046 | struct lv_segment *seg, int s, int use_zero) | |
8c5bcdab | 3047 | { |
067184f3 | 3048 | char *dlid, *name; |
8c5bcdab AK |
3049 | char errid[32]; |
3050 | struct dm_tree_node *node; | |
3051 | struct lv_segment *seg_i; | |
067184f3 | 3052 | struct dm_info info; |
aaf92617 | 3053 | int segno = -1, i = 0; |
e2354ea3 | 3054 | uint64_t size = (uint64_t) _seg_len(seg) * seg->lv->vg->extent_size; |
8c5bcdab | 3055 | |
2c44337b | 3056 | dm_list_iterate_items(seg_i, &seg->lv->segments) { |
d8fc4d09 | 3057 | if (seg == seg_i) { |
8c5bcdab | 3058 | segno = i; |
d8fc4d09 ZK |
3059 | break; |
3060 | } | |
8c5bcdab AK |
3061 | ++i; |
3062 | } | |
3063 | ||
3064 | if (segno < 0) { | |
d8fc4d09 | 3065 | log_error(INTERNAL_ERROR "_add_error_or_zero_device called with bad segment."); |
3df790d9 | 3066 | return NULL; |
8c5bcdab AK |
3067 | } |
3068 | ||
3069 | sprintf(errid, "missing_%d_%d", segno, s); | |
3070 | ||
6a0d97a6 | 3071 | if (!(dlid = build_dm_uuid(dm->mem, seg->lv, errid))) |
8c5bcdab AK |
3072 | return_NULL; |
3073 | ||
e59e2f7c | 3074 | if (!(name = dm_build_dm_name(dm->mem, seg->lv->vg->name, |
922fccc6 | 3075 | seg->lv->name, errid))) |
8c5bcdab | 3076 | return_NULL; |
8c5bcdab | 3077 | |
622884d6 | 3078 | if (!_info(dm->cmd, name, dlid, 0, 0, 0, &info, NULL, NULL)) |
034931f6 | 3079 | return_NULL; |
067184f3 AK |
3080 | |
3081 | if (!info.exists) { | |
3082 | /* Create new node */ | |
3083 | if (!(node = dm_tree_add_new_dev(dtree, name, dlid, 0, 0, 0, 0, 0))) | |
3084 | return_NULL; | |
d8fc4d09 ZK |
3085 | |
3086 | if (use_zero) { | |
3087 | if (!dm_tree_node_add_zero_target(node, size)) | |
3088 | return_NULL; | |
3089 | } else | |
3090 | if (!dm_tree_node_add_error_target(node, size)) | |
3091 | return_NULL; | |
067184f3 AK |
3092 | } else { |
3093 | /* Already exists */ | |
3094 | if (!dm_tree_add_dev(dtree, info.major, info.minor)) { | |
1bdcb01f | 3095 | log_error("Failed to add device (%" PRIu32 ":%" PRIu32") to dtree.", |
067184f3 | 3096 | info.major, info.minor); |
a7691cde | 3097 | return NULL; |
067184f3 AK |
3098 | } |
3099 | } | |
3100 | ||
3101 | return dlid; | |
8c5bcdab AK |
3102 | } |
3103 | ||
3104 | static int _add_error_area(struct dev_manager *dm, struct dm_tree_node *node, | |
3105 | struct lv_segment *seg, int s) | |
3106 | { | |
3107 | char *dlid; | |
3108 | uint64_t extent_size = seg->lv->vg->extent_size; | |
d8fc4d09 | 3109 | int use_zero = !strcmp(dm->cmd->stripe_filler, TARGET_NAME_ZERO) ? 1 : 0; |
8c5bcdab | 3110 | |
d8fc4d09 | 3111 | if (!strcmp(dm->cmd->stripe_filler, TARGET_NAME_ERROR) || use_zero) { |
8c5bcdab AK |
3112 | /* |
3113 | * FIXME, the tree pointer is first field of dm_tree_node, but | |
3114 | * we don't have the struct definition available. | |
3115 | */ | |
3116 | struct dm_tree **tree = (struct dm_tree **) node; | |
d8fc4d09 | 3117 | if (!(dlid = _add_error_or_zero_device(dm, *tree, seg, s, use_zero))) |
8c5bcdab | 3118 | return_0; |
86b15c7c AK |
3119 | if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_le(seg, s))) |
3120 | return_0; | |
87ec9484 | 3121 | } else |
86b15c7c AK |
3122 | if (!dm_tree_node_add_target_area(node, dm->cmd->stripe_filler, NULL, UINT64_C(0))) |
3123 | return_0; | |
87ec9484 | 3124 | |
8c5bcdab AK |
3125 | return 1; |
3126 | } | |
3127 | ||
31cfcf7c DT |
3128 | static int _bad_pv_area(struct lv_segment *seg, uint32_t s) |
3129 | { | |
3130 | struct stat info; | |
3131 | const char *name; | |
3132 | struct device *dev; | |
3133 | ||
3134 | if (!seg_pvseg(seg, s)) | |
3135 | return 1; | |
3136 | if (!seg_pv(seg, s)) | |
3137 | return 1; | |
3138 | if (!(dev = seg_dev(seg, s))) | |
3139 | return 1; | |
3140 | if (dm_list_empty(&dev->aliases)) | |
3141 | return 1; | |
3142 | /* FIXME Avoid repeating identical stat in dm_tree_node_add_target_area */ | |
3143 | name = dev_name(dev); | |
3144 | if (stat(name, &info) < 0) | |
3145 | return 1; | |
3146 | if (!S_ISBLK(info.st_mode)) | |
3147 | return 1; | |
3148 | return 0; | |
3149 | } | |
3150 | ||
5f4b2acf | 3151 | int add_areas_line(struct dev_manager *dm, struct lv_segment *seg, |
72b2cb61 AK |
3152 | struct dm_tree_node *node, uint32_t start_area, |
3153 | uint32_t areas) | |
323a167b | 3154 | { |
31cfcf7c | 3155 | struct cmd_context *cmd = seg->lv->vg->cmd; |
5f4b2acf AK |
3156 | uint64_t extent_size = seg->lv->vg->extent_size; |
3157 | uint32_t s; | |
2ed2a724 | 3158 | char *dlid; |
f5f3defc | 3159 | const char *name; |
ab852ffe ZK |
3160 | unsigned num_error_areas = 0; |
3161 | unsigned num_existing_areas = 0; | |
323a167b | 3162 | |
5f4b2acf | 3163 | for (s = start_area; s < areas; s++) { |
31cfcf7c DT |
3164 | if (((seg_type(seg, s) == AREA_PV) && _bad_pv_area(seg, s)) || |
3165 | ((seg_type(seg, s) == AREA_LV) && !seg_lv(seg, s))) { | |
3166 | if (!cmd->partial_activation) { | |
fd6e113b DT |
3167 | if (!cmd->degraded_activation || |
3168 | (!lv_is_raid_type(seg->lv) && | |
3169 | !lv_is_integrity(seg->lv) && | |
3170 | !lv_is_integrity_metadata(seg->lv) && | |
3171 | !lv_is_integrity_origin(seg->lv))) { | |
31cfcf7c | 3172 | log_error("Aborting. LV %s is incomplete and --activationmode partial was not specified.", |
922fccc6 | 3173 | display_lvname(seg->lv)); |
be75076d JB |
3174 | return 0; |
3175 | } | |
f5f3defc | 3176 | } |
8c5bcdab AK |
3177 | if (!_add_error_area(dm, node, seg, s)) |
3178 | return_0; | |
ab852ffe | 3179 | num_error_areas++; |
86b15c7c | 3180 | } else if (seg_type(seg, s) == AREA_PV) { |
4eb04c8c DT |
3181 | struct device *dev = seg_dev(seg, s); |
3182 | name = dm_list_empty(&dev->aliases) ? NULL : dev_name(dev); | |
3183 | ||
3184 | if (!dm_tree_node_add_target_area(node, name, NULL, | |
86b15c7c AK |
3185 | (seg_pv(seg, s)->pe_start + (extent_size * seg_pe(seg, s))))) |
3186 | return_0; | |
ab852ffe | 3187 | num_existing_areas++; |
6d04311e JEB |
3188 | } else if (seg_is_raid(seg)) { |
3189 | /* | |
3190 | * RAID can handle unassigned areas. It simple puts | |
3191 | * '- -' in for the metadata/data device pair. This | |
3192 | * is a valid way to indicate to the RAID target that | |
3193 | * the device is missing. | |
3194 | * | |
3195 | * If an image is marked as VISIBLE_LV and !LVM_WRITE, | |
3196 | * it means the device has temporarily been extracted | |
3197 | * from the array. It may come back at a future date, | |
3198 | * so the bitmap must track differences. Again, '- -' | |
3199 | * is used in the CTR table. | |
3200 | */ | |
3201 | if ((seg_type(seg, s) == AREA_UNASSIGNED) || | |
d2d3f0d7 | 3202 | (lv_is_visible(seg_lv(seg, s)) && |
6d04311e JEB |
3203 | !(seg_lv(seg, s)->status & LVM_WRITE))) { |
3204 | /* One each for metadata area and data area */ | |
3205 | if (!dm_tree_node_add_null_area(node, 0) || | |
3206 | !dm_tree_node_add_null_area(node, 0)) | |
2100c90d | 3207 | return_0; |
6d04311e | 3208 | continue; |
cac52ca4 | 3209 | } |
bf8d0098 AK |
3210 | |
3211 | if (seg->meta_areas && seg_metalv(seg, s)) { | |
3212 | if (!(dlid = build_dm_uuid(dm->mem, seg_metalv(seg, s), NULL))) | |
3213 | return_0; | |
3214 | if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_metale(seg, s))) | |
3215 | return_0; | |
3216 | } else if (!dm_tree_node_add_null_area(node, 0)) | |
6d04311e JEB |
3217 | return_0; |
3218 | ||
6a0d97a6 | 3219 | if (!(dlid = build_dm_uuid(dm->mem, seg_lv(seg, s), NULL))) |
6d04311e JEB |
3220 | return_0; |
3221 | if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_le(seg, s))) | |
3222 | return_0; | |
3223 | } else if (seg_type(seg, s) == AREA_LV) { | |
3224 | ||
6a0d97a6 | 3225 | if (!(dlid = build_dm_uuid(dm->mem, seg_lv(seg, s), NULL))) |
86b15c7c AK |
3226 | return_0; |
3227 | if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_le(seg, s))) | |
5f4b2acf | 3228 | return_0; |
5f4b2acf | 3229 | } else { |
550cae23 | 3230 | log_error(INTERNAL_ERROR "Unassigned area found in LV %s.", |
922fccc6 | 3231 | display_lvname(seg->lv)); |
323a167b JT |
3232 | return 0; |
3233 | } | |
5f4b2acf | 3234 | } |
323a167b | 3235 | |
ab852ffe ZK |
3236 | if (num_error_areas) { |
3237 | /* Thins currently do not support partial activation */ | |
3238 | if (lv_is_thin_type(seg->lv)) { | |
922fccc6 ZK |
3239 | log_error("Cannot activate %s: pool incomplete.", |
3240 | display_lvname(seg->lv)); | |
ab852ffe ZK |
3241 | return 0; |
3242 | } | |
ab852ffe ZK |
3243 | } |
3244 | ||
5f4b2acf AK |
3245 | return 1; |
3246 | } | |
323a167b | 3247 | |
0631d233 ZK |
3248 | static int _add_layer_target_to_dtree(struct dev_manager *dm, |
3249 | struct dm_tree_node *dnode, | |
84cdf85b | 3250 | const struct logical_volume *lv) |
0631d233 ZK |
3251 | { |
3252 | const char *layer_dlid; | |
3253 | ||
6a0d97a6 | 3254 | if (!(layer_dlid = build_dm_uuid(dm->mem, lv, lv_layer(lv)))) |
0631d233 ZK |
3255 | return_0; |
3256 | ||
6612d8dd | 3257 | |
0631d233 | 3258 | /* Add linear mapping over layered LV */ |
6612d8dd | 3259 | /* From VDO layer expose ONLY vdo pool header, we would need to use virtual size otherwise */ |
e8e6347b | 3260 | if (!add_linear_area_to_dtree(dnode, lv_is_vdo_pool(lv) ? 8 : lv->size, |
6612d8dd | 3261 | lv->vg->extent_size, |
0631d233 ZK |
3262 | lv->vg->cmd->use_linear_target, |
3263 | lv->vg->name, lv->name) || | |
3264 | !dm_tree_node_add_target_area(dnode, NULL, layer_dlid, 0)) | |
3265 | return_0; | |
3266 | ||
3267 | return 1; | |
3268 | } | |
3269 | ||
ad6b0ebb | 3270 | static int _add_origin_target_to_dtree(struct dev_manager *dm, |
84cdf85b ZK |
3271 | struct dm_tree_node *dnode, |
3272 | const struct logical_volume *lv) | |
5f4b2acf AK |
3273 | { |
3274 | const char *real_dlid; | |
2ec94d4d | 3275 | |
6a0d97a6 | 3276 | if (!(real_dlid = build_dm_uuid(dm->mem, lv, "real"))) |
5f4b2acf | 3277 | return_0; |
a9953411 | 3278 | |
e88f56d9 | 3279 | if (!dm_tree_node_add_snapshot_origin_target(dnode, lv->size, real_dlid)) |
5f4b2acf | 3280 | return_0; |
323a167b JT |
3281 | |
3282 | return 1; | |
3283 | } | |
3284 | ||
c21b944a MS |
3285 | static int _add_snapshot_merge_target_to_dtree(struct dev_manager *dm, |
3286 | struct dm_tree_node *dnode, | |
84cdf85b | 3287 | const struct logical_volume *lv) |
c21b944a MS |
3288 | { |
3289 | const char *origin_dlid, *cow_dlid, *merge_dlid; | |
79991aa7 | 3290 | struct lv_segment *merging_snap_seg = find_snapshot(lv); |
aed4e9c7 | 3291 | |
79991aa7 | 3292 | if (!lv_is_merging_origin(lv)) { |
922fccc6 ZK |
3293 | log_error(INTERNAL_ERROR "LV %s is not merging snapshot.", |
3294 | display_lvname(lv)); | |
aed4e9c7 ZK |
3295 | return 0; |
3296 | } | |
c21b944a | 3297 | |
6a0d97a6 | 3298 | if (!(origin_dlid = build_dm_uuid(dm->mem, lv, "real"))) |
c21b944a MS |
3299 | return_0; |
3300 | ||
6a0d97a6 | 3301 | if (!(cow_dlid = build_dm_uuid(dm->mem, merging_snap_seg->cow, "cow"))) |
c21b944a MS |
3302 | return_0; |
3303 | ||
6a0d97a6 | 3304 | if (!(merge_dlid = build_dm_uuid(dm->mem, merging_snap_seg->cow, NULL))) |
c21b944a MS |
3305 | return_0; |
3306 | ||
3307 | if (!dm_tree_node_add_snapshot_merge_target(dnode, lv->size, origin_dlid, | |
3308 | cow_dlid, merge_dlid, | |
f9e0adcc | 3309 | merging_snap_seg->chunk_size)) |
c21b944a MS |
3310 | return_0; |
3311 | ||
3312 | return 1; | |
3313 | } | |
3314 | ||
ad6b0ebb | 3315 | static int _add_snapshot_target_to_dtree(struct dev_manager *dm, |
81beded3 | 3316 | struct dm_tree_node *dnode, |
84cdf85b | 3317 | const struct logical_volume *lv, |
81beded3 | 3318 | struct lv_activate_opts *laopts) |
323a167b | 3319 | { |
5f4b2acf AK |
3320 | const char *origin_dlid; |
3321 | const char *cow_dlid; | |
3322 | struct lv_segment *snap_seg; | |
3323 | uint64_t size; | |
323a167b | 3324 | |
f9e0adcc | 3325 | if (!(snap_seg = find_snapshot(lv))) { |
922fccc6 ZK |
3326 | log_error("Couldn't find snapshot for '%s'.", |
3327 | display_lvname(lv)); | |
7a419a5d | 3328 | return 0; |
323a167b JT |
3329 | } |
3330 | ||
6a0d97a6 | 3331 | if (!(origin_dlid = build_dm_uuid(dm->mem, snap_seg->origin, "real"))) |
5f4b2acf | 3332 | return_0; |
a9953411 | 3333 | |
6a0d97a6 | 3334 | if (!(cow_dlid = build_dm_uuid(dm->mem, snap_seg->cow, "cow"))) |
5f4b2acf | 3335 | return_0; |
7bb6856a | 3336 | |
5f4b2acf | 3337 | size = (uint64_t) snap_seg->len * snap_seg->origin->vg->extent_size; |
22456547 | 3338 | |
c6168a14 | 3339 | if (!laopts->no_merging && lv_is_merging_cow(lv)) { |
a5ec3e38 MS |
3340 | /* cow is to be merged so load the error target */ |
3341 | if (!dm_tree_node_add_error_target(dnode, size)) | |
3342 | return_0; | |
3343 | } | |
3344 | else if (!dm_tree_node_add_snapshot_target(dnode, size, origin_dlid, | |
3345 | cow_dlid, 1, snap_seg->chunk_size)) | |
5f4b2acf | 3346 | return_0; |
323a167b JT |
3347 | |
3348 | return 1; | |
3349 | } | |
3350 | ||
ad6b0ebb | 3351 | static int _add_target_to_dtree(struct dev_manager *dm, |
81beded3 ZK |
3352 | struct dm_tree_node *dnode, |
3353 | struct lv_segment *seg, | |
3354 | struct lv_activate_opts *laopts) | |
323a167b | 3355 | { |
5f4b2acf AK |
3356 | uint64_t extent_size = seg->lv->vg->extent_size; |
3357 | ||
3358 | if (!seg->segtype->ops->add_target_line) { | |
550cae23 | 3359 | log_error(INTERNAL_ERROR "_emit_target cannot handle " |
1f5dde38 | 3360 | "segment type %s.", lvseg_name(seg)); |
5f4b2acf AK |
3361 | return 0; |
3362 | } | |
3363 | ||
2293567c | 3364 | return seg->segtype->ops->add_target_line(dm, dm->mem, dm->cmd, |
5f4b2acf | 3365 | &dm->target_state, seg, |
81beded3 | 3366 | laopts, dnode, |
e2354ea3 | 3367 | extent_size * _seg_len(seg), |
25fe716b | 3368 | &dm->pvmove_mirror_count); |
a69de491 | 3369 | } |
323a167b | 3370 | |
9a060948 ZK |
3371 | static int _add_new_external_lv_to_dtree(struct dev_manager *dm, |
3372 | struct dm_tree *dtree, | |
3373 | struct logical_volume *external_lv, | |
3374 | struct lv_activate_opts *laopts) | |
87331dc4 ZK |
3375 | { |
3376 | struct seg_list *sl; | |
457bd139 | 3377 | struct dm_tree_node *dnode; |
87331dc4 | 3378 | |
457bd139 | 3379 | /* We've already processed this node if it already has a context ptr */ |
363e8888 | 3380 | if ((dnode = _cached_dm_tree_node(dm->mem, dtree, external_lv, lv_layer(external_lv))) && |
457bd139 ZK |
3381 | dm_tree_node_get_context(dnode)) { |
3382 | /* Skip repeated invocation of external lv processing */ | |
3383 | log_debug_activation("Skipping users for already added external origin LV %s.", | |
3384 | display_lvname(external_lv)); | |
3385 | return 1; | |
3386 | } | |
9a060948 | 3387 | |
922fccc6 ZK |
3388 | log_debug_activation("Adding external origin LV %s and all active users.", |
3389 | display_lvname(external_lv)); | |
457bd139 | 3390 | /* If there is active origin LV, add whole origin device, otherwise only -layer */ |
9a060948 | 3391 | if (!_add_new_lv_to_dtree(dm, dtree, external_lv, laopts, |
457bd139 ZK |
3392 | (lv_is_origin(external_lv) && |
3393 | _cached_dm_info(dm->mem, dtree, external_lv, NULL)) | |
3394 | ? NULL : lv_layer(external_lv))) | |
9a060948 ZK |
3395 | return_0; |
3396 | ||
3397 | /* | |
3398 | * Add all ACTIVE LVs using this external origin LV. This is | |
3399 | * needed because of conversion of thin which could have been | |
3400 | * also an old-snapshot to external origin. | |
3401 | */ | |
9a060948 | 3402 | dm_list_iterate_items(sl, &external_lv->segs_using_this_lv) |
457bd139 ZK |
3403 | /* Add only active layered devices (also avoids loop) */ |
3404 | if (_cached_dm_info(dm->mem, dtree, sl->seg->lv, | |
1b439a0b | 3405 | lv_layer(sl->seg->lv)) && |
87331dc4 ZK |
3406 | !_add_new_lv_to_dtree(dm, dtree, sl->seg->lv, |
3407 | laopts, lv_layer(sl->seg->lv))) | |
3408 | return_0; | |
9a060948 | 3409 | |
922fccc6 ZK |
3410 | log_debug_activation("Finished adding external origin LV %s and all active users.", |
3411 | display_lvname(external_lv)); | |
3412 | ||
87331dc4 ZK |
3413 | return 1; |
3414 | } | |
3415 | ||
a985d5c6 ZK |
3416 | static int _add_new_cvol_subdev_to_dtree(struct dev_manager *dm, |
3417 | struct dm_tree *dtree, | |
3418 | const struct logical_volume *lv, | |
3419 | struct lv_activate_opts *laopts, | |
3420 | struct lv_layer *lvlayer, | |
3421 | int meta_or_data) | |
3422 | { | |
3423 | const char *layer = meta_or_data ? "cmeta" : "cdata"; | |
3424 | const struct lv_segment *lvseg = first_seg(lv); | |
3425 | uint64_t size = meta_or_data ? lvseg->metadata_len : lvseg->data_len; | |
3426 | const struct logical_volume *pool_lv = lvseg->pool_lv; | |
3427 | struct dm_tree_node *dnode; | |
3428 | char *dlid, *dlid_pool, *name; | |
50b188ee | 3429 | union lvid lvid = { { lv->vg->id, _get_id_for_meta_or_data(lvseg, meta_or_data) } }; |
a985d5c6 ZK |
3430 | |
3431 | if (!(dlid = dm_build_dm_uuid(dm->mem, UUID_PREFIX, (const char *)&lvid.s, layer))) | |
3432 | return_0; | |
3433 | ||
3434 | if (!(name = dm_build_dm_name(dm->mem, lv->vg->name, pool_lv->name, layer))) | |
3435 | return_0; | |
3436 | ||
3437 | if (!(dnode = dm_tree_add_new_dev_with_udev_flags(dtree, name, dlid, -1, -1, | |
3438 | read_only_lv(lv, laopts, layer), | |
3439 | ((lv->vg->status & PRECOMMITTED) | laopts->revert) ? 1 : 0, | |
3440 | lvlayer, | |
3441 | _get_udev_flags(dm, lv, layer, laopts->noscan, | |
3442 | laopts->temporary, 0)))) | |
3443 | return_0; | |
3444 | ||
3445 | if (dm->track_pending_delete) { | |
3446 | log_debug_activation("Using error for pending delete of %s-%s.", | |
3447 | display_lvname(lv), layer); | |
3448 | if (!dm_tree_node_add_error_target(dnode, size)) | |
3449 | return_0; | |
3450 | } else { | |
3451 | /* add load_segment to meta dnode: linear, size of meta area */ | |
3452 | if (!add_linear_area_to_dtree(dnode, size, lv->vg->extent_size, | |
3453 | lv->vg->cmd->use_linear_target, | |
3454 | lv->vg->name, lv->name)) | |
3455 | return_0; | |
3456 | ||
3457 | if (!(dlid_pool = build_dm_uuid(dm->mem, pool_lv, NULL))) | |
3458 | return_0; | |
3459 | ||
3460 | /* add seg_area to prev load_seg: offset 0 maps to cachevol lv offset 0 */ | |
3461 | if (!dm_tree_node_add_target_area(dnode, NULL, dlid_pool, | |
3462 | meta_or_data ? 0 : lvseg->metadata_len)) | |
3463 | return_0; | |
3464 | } | |
3465 | ||
3466 | return 1; | |
3467 | } | |
3468 | ||
ad6b0ebb | 3469 | static int _add_segment_to_dtree(struct dev_manager *dm, |
81beded3 ZK |
3470 | struct dm_tree *dtree, |
3471 | struct dm_tree_node *dnode, | |
3472 | struct lv_segment *seg, | |
3473 | struct lv_activate_opts *laopts, | |
3474 | const char *layer) | |
f7dd6d84 | 3475 | { |
5f4b2acf | 3476 | uint32_t s; |
25375165 | 3477 | struct lv_segment *seg_present; |
fba86dd4 | 3478 | const struct segment_type *segtype; |
9443b5d4 | 3479 | const char *target_name; |
f7dd6d84 | 3480 | |
5f4b2acf | 3481 | /* Ensure required device-mapper targets are loaded */ |
f9e0adcc | 3482 | seg_present = find_snapshot(seg->lv) ? : seg; |
fba86dd4 ZK |
3483 | segtype = seg_present->segtype; |
3484 | ||
3485 | target_name = (segtype->ops->target_name ? | |
3486 | segtype->ops->target_name(seg_present, laopts) : | |
3487 | segtype->name); | |
25375165 | 3488 | |
06abb2dd | 3489 | log_debug_activation("Checking kernel supports %s segment type for %s%s%s", |
922fccc6 | 3490 | target_name, display_lvname(seg->lv), |
06abb2dd | 3491 | layer ? "-" : "", layer ? : ""); |
25375165 | 3492 | |
fba86dd4 ZK |
3493 | if (segtype->ops->target_present && |
3494 | !segtype->ops->target_present(seg_present->lv->vg->cmd, | |
3495 | seg_present, NULL)) { | |
9443b5d4 | 3496 | log_error("Can't process LV %s: %s target support missing " |
922fccc6 | 3497 | "from kernel?", display_lvname(seg->lv), target_name); |
f7dd6d84 AK |
3498 | return 0; |
3499 | } | |
3500 | ||
87331dc4 | 3501 | /* Add external origin layer */ |
9a060948 ZK |
3502 | if (seg->external_lv && |
3503 | !_add_new_external_lv_to_dtree(dm, dtree, seg->external_lv, laopts)) | |
3504 | return_0; | |
96626f64 | 3505 | |
5f4b2acf AK |
3506 | /* Add mirror log */ |
3507 | if (seg->log_lv && | |
81beded3 | 3508 | !_add_new_lv_to_dtree(dm, dtree, seg->log_lv, laopts, NULL)) |
5f4b2acf | 3509 | return_0; |
96626f64 JB |
3510 | |
3511 | /* Add pool metadata */ | |
3679bb1c ZK |
3512 | if (seg->metadata_lv && |
3513 | !_add_new_lv_to_dtree(dm, dtree, seg->metadata_lv, laopts, NULL)) | |
3514 | return_0; | |
96626f64 JB |
3515 | |
3516 | /* Add pool layer */ | |
a900d150 | 3517 | if (seg->pool_lv && !laopts->origin_only && |
3679bb1c ZK |
3518 | !_add_new_lv_to_dtree(dm, dtree, seg->pool_lv, laopts, |
3519 | lv_layer(seg->pool_lv))) | |
3520 | return_0; | |
f7dd6d84 | 3521 | |
3ae55695 DT |
3522 | if (seg->writecache && !laopts->origin_only && |
3523 | !_add_new_lv_to_dtree(dm, dtree, seg->writecache, laopts, | |
3524 | lv_layer(seg->writecache))) | |
3525 | return_0; | |
3526 | ||
d9e8895a DT |
3527 | if (seg->integrity_meta_dev && !laopts->origin_only && |
3528 | !_add_new_lv_to_dtree(dm, dtree, seg->integrity_meta_dev, laopts, | |
3529 | lv_layer(seg->integrity_meta_dev))) | |
3530 | return_0; | |
3531 | ||
3679bb1c ZK |
3532 | /* Add any LVs used by this segment */ |
3533 | for (s = 0; s < seg->area_count; ++s) { | |
3534 | if ((seg_type(seg, s) == AREA_LV) && | |
bdfc96cb ZK |
3535 | /* do not bring up tracked image */ |
3536 | !lv_is_raid_image_with_tracking(seg_lv(seg, s)) && | |
fba86dd4 ZK |
3537 | /* origin only for cache without pending delete */ |
3538 | (!dm->track_pending_delete || !seg_is_cache(seg)) && | |
3539 | !_add_new_lv_to_dtree(dm, dtree, seg_lv(seg, s), | |
6612d8dd ZK |
3540 | laopts, |
3541 | lv_is_vdo_pool(seg_lv(seg, s)) ? | |
3542 | lv_layer(seg_lv(seg, s)) : NULL)) | |
aebf2d5c | 3543 | return_0; |
b896f7de | 3544 | if (seg_is_raid_with_meta(seg) && seg->meta_areas && seg_metalv(seg, s) && |
bdfc96cb | 3545 | !lv_is_raid_image_with_tracking(seg_lv(seg, s)) && |
3679bb1c ZK |
3546 | !_add_new_lv_to_dtree(dm, dtree, seg_metalv(seg, s), |
3547 | laopts, NULL)) | |
aebf2d5c | 3548 | return_0; |
5f4b2acf AK |
3549 | } |
3550 | ||
fba86dd4 ZK |
3551 | if (dm->track_pending_delete) { |
3552 | /* Replace target and all its used devs with error mapping */ | |
3553 | log_debug_activation("Using error for pending delete %s.", | |
922fccc6 | 3554 | display_lvname(seg->lv)); |
e2354ea3 | 3555 | if (!dm_tree_node_add_error_target(dnode, (uint64_t)seg->lv->vg->extent_size * _seg_len(seg))) |
fba86dd4 ZK |
3556 | return_0; |
3557 | } else if (!_add_target_to_dtree(dm, dnode, seg, laopts)) | |
5f4b2acf AK |
3558 | return_0; |
3559 | ||
5f4b2acf | 3560 | return 1; |
914c9723 | 3561 | } |
f894b4b1 | 3562 | |
ad6b0ebb | 3563 | static int _add_new_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, |
84cdf85b | 3564 | const struct logical_volume *lv, struct lv_activate_opts *laopts, |
81beded3 | 3565 | const char *layer) |
3e8479bd | 3566 | { |
5f4b2acf AK |
3567 | struct lv_segment *seg; |
3568 | struct lv_layer *lvlayer; | |
df390f17 | 3569 | struct seg_list *sl; |
3679bb1c | 3570 | struct dm_list *snh; |
e88f56d9 | 3571 | struct dm_tree_node *dnode; |
537f7456 | 3572 | const struct dm_info *dinfo; |
a5ec3e38 | 3573 | char *name, *dlid; |
a6b22cf3 AK |
3574 | uint32_t max_stripe_size = UINT32_C(0); |
3575 | uint32_t read_ahead = lv->read_ahead; | |
69506f1d | 3576 | uint32_t read_ahead_flags = UINT32_C(0); |
fba86dd4 | 3577 | int save_pending_delete = dm->track_pending_delete; |
7e5881dd | 3578 | int merge_in_progress = 0; |
3e8479bd | 3579 | |
cac4a974 DT |
3580 | if (!(lvlayer = dm_pool_alloc(dm->mem, sizeof(*lvlayer)))) { |
3581 | log_error("_add_new_lv_to_dtree: pool alloc failed for %s %s.", | |
3582 | display_lvname(lv), layer); | |
3583 | return 0; | |
3584 | } | |
3585 | lvlayer->lv = lv; | |
3586 | lvlayer->visible_component = (laopts->component_lv == lv) ? 1 : 0; | |
3587 | ||
8c17233a ZK |
3588 | log_debug_activation("Adding new LV %s%s%s to dtree", display_lvname(lv), |
3589 | layer ? "-" : "", layer ? : ""); | |
9a6e3683 ZK |
3590 | /* LV with pending delete is never put new into a table */ |
3591 | if (lv_is_pending_delete(lv) && !_cached_dm_info(dm->mem, dtree, lv, NULL)) | |
3592 | return 1; /* Replace with error only when already exists */ | |
3593 | ||
29bd3ccc ZK |
3594 | if (lv_is_cache_pool(lv) && |
3595 | !dm_list_empty(&lv->segs_using_this_lv)) { | |
a018c57f ZK |
3596 | /* cache pool is 'meta' LV and does not have a real device node */ |
3597 | if (!_add_new_lv_to_dtree(dm, dtree, seg_lv(first_seg(lv), 0), laopts, NULL)) | |
3598 | return_0; | |
3599 | if (!_add_new_lv_to_dtree(dm, dtree, first_seg(lv)->metadata_lv, laopts, NULL)) | |
3600 | return_0; | |
3601 | return 1; | |
3602 | } | |
3603 | ||
8dc351e8 AK |
3604 | /* FIXME Seek a simpler way to lay out the snapshot-merge tree. */ |
3605 | ||
79991aa7 ZK |
3606 | if (!layer && lv_is_merging_origin(lv)) { |
3607 | seg = find_snapshot(lv); | |
c582e3c0 | 3608 | /* |
7e5881dd | 3609 | * Prevent merge if merge isn't currently possible: |
c582e3c0 | 3610 | * either origin or merging snapshot are open |
9cccf524 | 3611 | * - for old snaps use "snapshot-merge" if it is already in use |
537f7456 MS |
3612 | * - open_count is always retrieved (as of dm-ioctl 4.7.0) |
3613 | * so just use the tree's existing nodes' info | |
c582e3c0 | 3614 | */ |
7e5881dd | 3615 | if ((dinfo = _cached_dm_info(dm->mem, dtree, lv, NULL))) { |
39b7d1ba | 3616 | /* Merging origin LV is present, check if merging is already running. */ |
334117ee | 3617 | if ((seg_is_thin_volume(seg) && _lv_has_thin_device_id(dm->mem, lv, NULL, seg->device_id)) || |
7e5881dd ZK |
3618 | (!seg_is_thin_volume(seg) && lv_has_target_type(dm->mem, lv, NULL, TARGET_NAME_SNAPSHOT_MERGE))) { |
3619 | log_debug_activation("Merging of snapshot volume %s to origin %s is in progress.", | |
3620 | display_lvname(seg->lv), display_lvname(seg->lv)); | |
3621 | merge_in_progress = 1; /* Merge is already running */ | |
3622 | } /* Merge is not yet running, so check if it can be started */ | |
3623 | else if (laopts->resuming) { | |
3624 | log_debug_activation("Postponing pending snapshot merge for origin %s, " | |
3625 | "merge was not started before suspend.", | |
3626 | display_lvname(lv)); | |
3627 | laopts->no_merging = 1; /* Cannot be reloaded in suspend */ | |
3628 | } /* Non-resuming merge requires origin to be unused */ | |
3629 | else if (dinfo->open_count) { | |
3630 | log_debug_activation("Postponing pending snapshot merge for origin %s, " | |
3631 | "origin volume is opened.", | |
3632 | display_lvname(lv)); | |
3633 | laopts->no_merging = 1; | |
3634 | } | |
3635 | } | |
3636 | ||
3637 | /* If merge would be still undecided, look as snapshot */ | |
3638 | if (!merge_in_progress && !laopts->no_merging && | |
3639 | (dinfo = _cached_dm_info(dm->mem, dtree, | |
9cccf524 ZK |
3640 | seg_is_thin_volume(seg) ? |
3641 | seg->lv : seg->cow, NULL))) { | |
3642 | if (seg_is_thin_volume(seg)) { | |
3643 | /* Active thin snapshot prevents merge */ | |
7e5881dd ZK |
3644 | log_debug_activation("Postponing pending snapshot merge for origin volume %s, " |
3645 | "merging thin snapshot volume %s is active.", | |
3646 | display_lvname(lv), display_lvname(seg->lv)); | |
3647 | laopts->no_merging = 1; | |
9cccf524 | 3648 | } else if (dinfo->open_count) { |
7e5881dd ZK |
3649 | log_debug_activation("Postponing pending snapshot merge for origin volume %s, " |
3650 | "merging snapshot volume %s is opened.", | |
3651 | display_lvname(lv), display_lvname(seg->lv)); | |
3652 | laopts->no_merging = 1; | |
9cccf524 ZK |
3653 | } |
3654 | } | |
c582e3c0 MS |
3655 | } |
3656 | ||
e59e2f7c | 3657 | if (!(name = dm_build_dm_name(dm->mem, lv->vg->name, lv->name, layer))) |
5f4b2acf | 3658 | return_0; |
3e8479bd | 3659 | |
a7691cde | 3660 | /* Even unused thin-pool still needs to get layered UUID -suffix */ |
00a45ca4 ZK |
3661 | if (!layer && lv_is_new_thin_pool(lv)) |
3662 | layer = lv_layer(lv); | |
3663 | ||
8153c5f1 DT |
3664 | /* Adds -real to the dm uuid of wcorig LV. */ |
3665 | if (!layer && lv_is_writecache_origin(lv)) | |
3666 | layer = lv_layer(lv); /* "real" */ | |
3667 | ||
21b215ee ZK |
3668 | /* |
3669 | * FIXME: we would like to have -private suffixes used for device not processed by udev | |
3670 | * however ATM we also sometimes want to provide /dev/vg/lv symlinks to such devices | |
3671 | * and also be able to correctly report its status with lvs. | |
3672 | * | |
3673 | * Until problems are resolved this code path needs to be disabled. | |
3674 | */ | |
3675 | if (0 && lvlayer->visible_component) { | |
14f782c5 ZK |
3676 | /* Component LV will be public, do not add any layer suffixes */ |
3677 | if (!(dlid = dm_build_dm_uuid(dm->mem, UUID_PREFIX, lv->lvid.s, NULL))) | |
3678 | return_0; | |
3679 | } else if (!(dlid = build_dm_uuid(dm->mem, lv,layer))) | |
5f4b2acf | 3680 | return_0; |
3e8479bd | 3681 | |
5f4b2acf | 3682 | /* We've already processed this node if it already has a context ptr */ |
e88f56d9 AK |
3683 | if ((dnode = dm_tree_find_node_by_uuid(dtree, dlid)) && |
3684 | dm_tree_node_get_context(dnode)) | |
5f4b2acf | 3685 | return 1; |
3e8479bd | 3686 | |
5f4b2acf | 3687 | /* |
ad6b0ebb | 3688 | * Add LV to dtree. |
5f4b2acf AK |
3689 | * If we're working with precommitted metadata, clear any |
3690 | * existing inactive table left behind. | |
3691 | * Major/minor settings only apply to the visible layer. | |
3692 | */ | |
df390f17 AK |
3693 | /* FIXME Move the clear from here until later, so we can leave |
3694 | * identical inactive tables untouched. (For pvmove.) | |
3695 | */ | |
f16aea9e | 3696 | if (!(dnode = dm_tree_add_new_dev_with_udev_flags(dtree, name, dlid, |
fe686a51 AK |
3697 | layer ? UINT32_C(0) : (uint32_t) lv->major, |
3698 | layer ? UINT32_C(0) : (uint32_t) lv->minor, | |
a6fdb9d9 | 3699 | read_only_lv(lv, laopts, layer), |
10d0d9c7 | 3700 | ((lv->vg->status & PRECOMMITTED) | laopts->revert) ? 1 : 0, |
f16aea9e | 3701 | lvlayer, |
eb3597ac ZK |
3702 | _get_udev_flags(dm, lv, layer, laopts->noscan, laopts->temporary, |
3703 | lvlayer->visible_component)))) | |
5f4b2acf AK |
3704 | return_0; |
3705 | ||
3706 | /* Store existing name so we can do rename later */ | |
e88f56d9 | 3707 | lvlayer->old_name = dm_tree_node_get_name(dnode); |
5f4b2acf AK |
3708 | |
3709 | /* Create table */ | |
3710 | dm->pvmove_mirror_count = 0u; | |
3679bb1c | 3711 | |
fba86dd4 | 3712 | if (lv_is_pending_delete(lv)) |
f5e265a0 | 3713 | /* Handle LVs with pending delete */ |
fba86dd4 ZK |
3714 | /* Fow now used only by cache segtype, TODO snapshots */ |
3715 | dm->track_pending_delete = 1; | |
f5e265a0 | 3716 | |
a985d5c6 ZK |
3717 | if (lv_is_cache_vol(lv)) |
3718 | dm_list_iterate_items(sl, &lv->segs_using_this_lv) | |
3719 | if (lv_is_cache(sl->seg->lv) && | |
3720 | /* Cachevol is used by cache LV segment -> add cvol-cdata/cmeta extra layer */ | |
3721 | (!_add_new_cvol_subdev_to_dtree(dm, dtree, sl->seg->lv, laopts, lvlayer, 0) || | |
3722 | !_add_new_cvol_subdev_to_dtree(dm, dtree, sl->seg->lv, laopts, lvlayer, 1))) | |
3723 | return_0; | |
3724 | ||
29bd3ccc ZK |
3725 | /* This is unused cache-pool - make metadata accessible */ |
3726 | if (lv_is_cache_pool(lv)) | |
3727 | lv = first_seg(lv)->metadata_lv; | |
3728 | ||
3679bb1c ZK |
3729 | /* If this is a snapshot origin, add real LV */ |
3730 | /* If this is a snapshot origin + merging snapshot, add cow + real LV */ | |
87331dc4 | 3731 | /* Snapshot origin could be also external origin */ |
3679bb1c ZK |
3732 | if (lv_is_origin(lv) && !layer) { |
3733 | if (!_add_new_lv_to_dtree(dm, dtree, lv, laopts, "real")) | |
5f4b2acf | 3734 | return_0; |
3679bb1c ZK |
3735 | if (!laopts->no_merging && lv_is_merging_origin(lv)) { |
3736 | if (!_add_new_lv_to_dtree(dm, dtree, | |
9974136b | 3737 | find_snapshot(lv)->cow, laopts, "cow")) |
3679bb1c ZK |
3738 | return_0; |
3739 | /* | |
3740 | * Must also add "real" LV for use when | |
3741 | * snapshot-merge target is added | |
3742 | */ | |
3743 | if (!_add_snapshot_merge_target_to_dtree(dm, dnode, lv)) | |
3744 | return_0; | |
3745 | } else if (!_add_origin_target_to_dtree(dm, dnode, lv)) | |
3746 | return_0; | |
3747 | ||
3748 | /* Add any snapshots of this LV */ | |
3749 | dm_list_iterate(snh, &lv->snapshot_segs) | |
3750 | if (!_add_new_lv_to_dtree(dm, dtree, | |
3751 | dm_list_struct_base(snh, struct lv_segment, | |
3752 | origin_list)->cow, | |
3753 | laopts, NULL)) | |
3754 | return_0; | |
3755 | } else if (lv_is_cow(lv) && !layer) { | |
3756 | if (!_add_new_lv_to_dtree(dm, dtree, lv, laopts, "cow")) | |
3757 | return_0; | |
3758 | if (!_add_snapshot_target_to_dtree(dm, dnode, lv, laopts)) | |
3759 | return_0; | |
00a45ca4 | 3760 | } else if (!layer && ((lv_is_thin_pool(lv) && !lv_is_new_thin_pool(lv)) || |
6612d8dd | 3761 | lv_is_vdo_pool(lv) || |
00a45ca4 | 3762 | lv_is_external_origin(lv))) { |
6612d8dd | 3763 | /* External origin or 'used' Thin pool or VDO pool is using layer */ |
3679bb1c ZK |
3764 | if (!_add_new_lv_to_dtree(dm, dtree, lv, laopts, lv_layer(lv))) |
3765 | return_0; | |
3766 | if (!_add_layer_target_to_dtree(dm, dnode, lv)) | |
3767 | return_0; | |
3768 | } else { | |
3769 | /* Add 'real' segments for LVs */ | |
3770 | dm_list_iterate_items(seg, &lv->segments) { | |
3771 | if (!_add_segment_to_dtree(dm, dtree, dnode, seg, laopts, layer)) | |
3772 | return_0; | |
3773 | if (max_stripe_size < seg->stripe_size * seg->area_count) | |
3774 | max_stripe_size = seg->stripe_size * seg->area_count; | |
3775 | } | |
6612d8dd ZK |
3776 | |
3777 | if (!layer && lv_is_vdo_pool(lv) && | |
3778 | !_add_layer_target_to_dtree(dm, dnode, lv)) | |
3779 | return_0; | |
5f4b2acf | 3780 | } |
3e8479bd | 3781 | |
3679bb1c ZK |
3782 | /* Setup thin pool callback */ |
3783 | if (lv_is_thin_pool(lv) && layer && | |
c0c1ada8 ZK |
3784 | !_pool_register_callback(dm, dnode, lv)) |
3785 | return_0; | |
3786 | ||
a9eaab6b | 3787 | if (lv_is_cache(lv) && !lv_is_cache_vol(first_seg(lv)->pool_lv) && |
69434c2e ZK |
3788 | /* Register callback only for layer activation or non-layered cache LV */ |
3789 | (layer || !lv_layer(lv)) && | |
3790 | /* Register callback when metadata LV is NOT already active */ | |
3791 | !_cached_dm_info(dm->mem, dtree, first_seg(first_seg(lv)->pool_lv)->metadata_lv, NULL) && | |
c0c1ada8 | 3792 | !_pool_register_callback(dm, dnode, lv)) |
3679bb1c ZK |
3793 | return_0; |
3794 | ||
9fe7aba2 DT |
3795 | if (lv_is_cache(lv) && lv_is_cache_vol(first_seg(lv)->pool_lv) && |
3796 | /* Register callback only for layer activation or non-layered cache LV */ | |
3797 | (layer || !lv_layer(lv)) && | |
317071ec DT |
3798 | /* Register callback when cachevol LV is NOT already active */ |
3799 | !_cached_dm_info(dm->mem, dtree, first_seg(lv)->pool_lv, NULL) && | |
9fe7aba2 DT |
3800 | !_pool_register_callback(dm, dnode, lv)) |
3801 | return_0; | |
3802 | ||
0451225c ZK |
3803 | /* |
3804 | * Update tables for ANY PVMOVE holders for active LV where the name starts with 'pvmove', | |
3805 | * but it's not anymore PVMOVE LV and also it's not a PVMOVE _mimage LV. | |
3806 | * When resume happens, tables MUST be already preloaded with correct entries! | |
3807 | * (since we can't preload different table while devices are suspended) | |
3808 | */ | |
3809 | if (!lv_is_pvmove(lv) && !strncmp(lv->name, "pvmove", 6) && !strchr(lv->name, '_') && | |
3810 | (dinfo = _cached_dm_info(dm->mem, dtree, lv, NULL))) | |
3811 | if (!_add_holders_to_dtree(dm, dtree, lv, laopts, dinfo)) | |
3812 | return_0; | |
3813 | ||
9b6135dc | 3814 | if (read_ahead == DM_READ_AHEAD_AUTO) { |
1c1b068f ZK |
3815 | /* we need RA at least twice a whole stripe - see the comment in md/raid0.c */ |
3816 | read_ahead = max_stripe_size * 2; | |
3679bb1c | 3817 | /* FIXME: layered device read-ahead */ |
d3961002 | 3818 | if (!read_ahead) |
c1fdeec9 | 3819 | lv_calculate_readahead(lv, &read_ahead); |
69506f1d | 3820 | read_ahead_flags = DM_READ_AHEAD_MINIMUM_FLAG; |
9b6135dc | 3821 | } |
a6b22cf3 | 3822 | |
69506f1d | 3823 | dm_tree_node_set_read_ahead(dnode, read_ahead, read_ahead_flags); |
a6b22cf3 | 3824 | |
df390f17 | 3825 | /* Add any LVs referencing a PVMOVE LV unless told not to */ |
2360ce35 | 3826 | if (dm->track_pvmove_deps && lv_is_pvmove(lv)) |
df390f17 | 3827 | dm_list_iterate_items(sl, &lv->segs_using_this_lv) |
81beded3 | 3828 | if (!_add_new_lv_to_dtree(dm, dtree, sl->seg->lv, laopts, NULL)) |
df390f17 AK |
3829 | return_0; |
3830 | ||
fba86dd4 ZK |
3831 | dm->track_pending_delete = save_pending_delete; /* restore */ |
3832 | ||
9fdc84c3 | 3833 | return 1; |
3e8479bd AK |
3834 | } |
3835 | ||
5efa3f1e MB |
3836 | /* FIXME: symlinks should be created/destroyed at the same time |
3837 | * as the kernel devices but we can't do that from within libdevmapper | |
3838 | * at present so we must walk the tree twice instead. */ | |
3839 | ||
5f4b2acf AK |
3840 | /* |
3841 | * Create LV symlinks for children of supplied root node. | |
3842 | */ | |
e88f56d9 | 3843 | static int _create_lv_symlinks(struct dev_manager *dm, struct dm_tree_node *root) |
3e8479bd | 3844 | { |
5f4b2acf | 3845 | void *handle = NULL; |
e88f56d9 | 3846 | struct dm_tree_node *child; |
5f4b2acf | 3847 | struct lv_layer *lvlayer; |
3ad47d16 PR |
3848 | char *old_vgname, *old_lvname, *old_layer; |
3849 | char *new_vgname, *new_lvname, *new_layer; | |
5f4b2acf AK |
3850 | const char *name; |
3851 | int r = 1; | |
3e8479bd | 3852 | |
418663b6 | 3853 | /* Nothing to do if udev fallback is disabled. */ |
44071331 | 3854 | if (!_check_udev_fallback(dm->cmd)) { |
7f815706 | 3855 | fs_set_create(); |
418663b6 | 3856 | return 1; |
7f815706 | 3857 | } |
418663b6 | 3858 | |
e88f56d9 | 3859 | while ((child = dm_tree_next_child(&handle, root, 0))) { |
6c8ffd03 | 3860 | if (!(lvlayer = dm_tree_node_get_context(child))) |
5f4b2acf | 3861 | continue; |
3e8479bd | 3862 | |
5f4b2acf | 3863 | /* Detect rename */ |
e88f56d9 | 3864 | name = dm_tree_node_get_name(child); |
3e8479bd | 3865 | |
5f4b2acf | 3866 | if (name && lvlayer->old_name && *lvlayer->old_name && strcmp(name, lvlayer->old_name)) { |
3ad47d16 | 3867 | if (!dm_split_lvm_name(dm->mem, lvlayer->old_name, &old_vgname, &old_lvname, &old_layer)) { |
81ef4eb4 | 3868 | log_error("_create_lv_symlinks: Couldn't split up old device name %s.", lvlayer->old_name); |
67cdbd7e AK |
3869 | return 0; |
3870 | } | |
3ad47d16 | 3871 | if (!dm_split_lvm_name(dm->mem, name, &new_vgname, &new_lvname, &new_layer)) { |
81ef4eb4 | 3872 | log_error("_create_lv_symlinks: Couldn't split up new device name %s.", name); |
3ad47d16 PR |
3873 | return 0; |
3874 | } | |
3875 | if (!fs_rename_lv(lvlayer->lv, name, old_vgname, old_lvname)) | |
3876 | r = 0; | |
ca51e5d9 AK |
3877 | continue; |
3878 | } | |
eb3597ac | 3879 | if (_lv_has_mknode(lvlayer->lv) || lvlayer->visible_component) { |
ab9663f3 | 3880 | if (!_dev_manager_lv_mknodes(lvlayer->lv)) |
ca51e5d9 AK |
3881 | r = 0; |
3882 | continue; | |
3883 | } | |
ab9663f3 | 3884 | if (!_dev_manager_lv_rmnodes(lvlayer->lv)) |
5f4b2acf | 3885 | r = 0; |
3e8479bd AK |
3886 | } |
3887 | ||
5f4b2acf AK |
3888 | return r; |
3889 | } | |
9fdc84c3 | 3890 | |
5efa3f1e MB |
3891 | /* |
3892 | * Remove LV symlinks for children of supplied root node. | |
3893 | */ | |
3894 | static int _remove_lv_symlinks(struct dev_manager *dm, struct dm_tree_node *root) | |
3895 | { | |
3896 | void *handle = NULL; | |
3897 | struct dm_tree_node *child; | |
3898 | char *vgname, *lvname, *layer; | |
3899 | int r = 1; | |
3900 | ||
418663b6 | 3901 | /* Nothing to do if udev fallback is disabled. */ |
44071331 | 3902 | if (!_check_udev_fallback(dm->cmd)) |
418663b6 PR |
3903 | return 1; |
3904 | ||
5efa3f1e | 3905 | while ((child = dm_tree_next_child(&handle, root, 0))) { |
67cdbd7e | 3906 | if (!dm_split_lvm_name(dm->mem, dm_tree_node_get_name(child), &vgname, &lvname, &layer)) { |
5efa3f1e MB |
3907 | r = 0; |
3908 | continue; | |
3909 | } | |
3910 | ||
4bfa1324 AK |
3911 | if (!*vgname) |
3912 | continue; | |
3913 | ||
5efa3f1e MB |
3914 | /* only top level layer has symlinks */ |
3915 | if (*layer) | |
3916 | continue; | |
3917 | ||
cda69e17 PR |
3918 | fs_del_lv_byname(dm->cmd->dev_dir, vgname, lvname, |
3919 | dm->cmd->current_settings.udev_rules); | |
5efa3f1e MB |
3920 | } |
3921 | ||
3922 | return r; | |
3923 | } | |
3924 | ||
fba86dd4 | 3925 | static int _clean_tree(struct dev_manager *dm, struct dm_tree_node *root, const char *non_toplevel_tree_dlid) |
5f4b2acf AK |
3926 | { |
3927 | void *handle = NULL; | |
e88f56d9 | 3928 | struct dm_tree_node *child; |
5f4b2acf AK |
3929 | char *vgname, *lvname, *layer; |
3930 | const char *name, *uuid; | |
fba86dd4 ZK |
3931 | struct dm_str_list *dl; |
3932 | ||
e88f56d9 AK |
3933 | while ((child = dm_tree_next_child(&handle, root, 0))) { |
3934 | if (!(name = dm_tree_node_get_name(child))) | |
5f4b2acf AK |
3935 | continue; |
3936 | ||
e88f56d9 | 3937 | if (!(uuid = dm_tree_node_get_uuid(child))) |
5f4b2acf AK |
3938 | continue; |
3939 | ||
67cdbd7e AK |
3940 | if (!dm_split_lvm_name(dm->mem, name, &vgname, &lvname, &layer)) { |
3941 | log_error("_clean_tree: Couldn't split up device name %s.", name); | |
3942 | return 0; | |
3943 | } | |
5f4b2acf AK |
3944 | |
3945 | /* Not meant to be top level? */ | |
fba86dd4 | 3946 | if (!*layer) |
ca509c97 ZK |
3947 | continue; |
3948 | ||
22149572 AK |
3949 | /* If operation was performed on a partial tree, don't remove it */ |
3950 | if (non_toplevel_tree_dlid && !strcmp(non_toplevel_tree_dlid, uuid)) | |
3951 | continue; | |
3952 | ||
b2885b71 ZK |
3953 | if (!(uuid = dm_pool_strdup(dm->cmd->pending_delete_mem, uuid))) { |
3954 | log_error("_clean_tree: Failed to duplicate uuid."); | |
3955 | return 0; | |
3956 | } | |
3957 | ||
3958 | if (!str_list_add(dm->cmd->pending_delete_mem, &dm->cmd->pending_delete, uuid)) | |
a74be32b | 3959 | return_0; |
5f4b2acf AK |
3960 | } |
3961 | ||
30a98e4d | 3962 | /* Deactivate any tracked pending delete nodes */ |
b2885b71 | 3963 | if (!dm_list_empty(&dm->cmd->pending_delete) && !dm_get_suspended_counter()) { |
30a98e4d ZK |
3964 | fs_unlock(); |
3965 | dm_tree_set_cookie(root, fs_get_cookie()); | |
b2885b71 | 3966 | dm_list_iterate_items(dl, &dm->cmd->pending_delete) { |
30a98e4d ZK |
3967 | log_debug_activation("Deleting tracked UUID %s.", dl->str); |
3968 | if (!dm_tree_deactivate_children(root, dl->str, strlen(dl->str))) | |
3969 | return_0; | |
3970 | } | |
b2885b71 ZK |
3971 | dm_list_init(&dm->cmd->pending_delete); |
3972 | dm_pool_empty(dm->cmd->pending_delete_mem); | |
30a98e4d ZK |
3973 | } |
3974 | ||
5f4b2acf | 3975 | return 1; |
3e8479bd AK |
3976 | } |
3977 | ||
84cdf85b | 3978 | static int _tree_action(struct dev_manager *dm, const struct logical_volume *lv, |
81beded3 | 3979 | struct lv_activate_opts *laopts, action_t action) |
3e8479bd | 3980 | { |
c3e29903 | 3981 | static const char _action_names[][24] = { |
02f49caa ZK |
3982 | "PRELOAD", "ACTIVATE", "DEACTIVATE", "SUSPEND", "SUSPEND_WITH_LOCKFS", "CLEAN" |
3983 | }; | |
7a6600b1 | 3984 | const size_t DLID_SIZE = ID_LEN + sizeof(UUID_PREFIX) - 1; |
e88f56d9 AK |
3985 | struct dm_tree *dtree; |
3986 | struct dm_tree_node *root; | |
9fdc84c3 | 3987 | char *dlid; |
3e8479bd AK |
3988 | int r = 0; |
3989 | ||
02f49caa | 3990 | if (action < DM_ARRAY_SIZE(_action_names)) |
e7eb5b06 ZK |
3991 | log_debug_activation("Creating %s%s tree for %s.", |
3992 | _action_names[action], | |
3993 | (laopts->origin_only) ? " origin-only" : "", | |
3994 | display_lvname(lv)); | |
02f49caa | 3995 | |
12bbfbe8 | 3996 | /* Some LV cannot be used for top level tree */ |
9eab84aa | 3997 | /* TODO: add more.... */ |
29bd3ccc | 3998 | if (lv_is_cache_pool(lv) && !dm_list_empty(&lv->segs_using_this_lv)) { |
922fccc6 ZK |
3999 | log_error(INTERNAL_ERROR "Cannot create tree for %s.", |
4000 | display_lvname(lv)); | |
9eab84aa ZK |
4001 | return 0; |
4002 | } | |
9a060948 ZK |
4003 | /* Some targets may build bigger tree for activation */ |
4004 | dm->activation = ((action == PRELOAD) || (action == ACTIVATE)); | |
a900d150 | 4005 | dm->suspend = (action == SUSPEND_WITH_LOCKFS) || (action == SUSPEND); |
9c083d34 | 4006 | |
e211768d ZK |
4007 | /* Drop any cache before DM table manipulation within locked section |
4008 | * TODO: check if it makes sense to manage cache within lock */ | |
f8aa073a | 4009 | dm_devs_cache_destroy(); |
04fbffb1 | 4010 | |
4d2f9a4f | 4011 | dtree = _create_partial_dtree(dm, lv, laopts->origin_only); |
04fbffb1 | 4012 | |
4d2f9a4f ZK |
4013 | if (!dtree) |
4014 | return_0; | |
4015 | ||
e88f56d9 | 4016 | if (!(root = dm_tree_find_node(dtree, 0, 0))) { |
81ef4eb4 | 4017 | log_error("Lost dependency tree root node."); |
937a21f0 | 4018 | goto out_no_root; |
3e8479bd AK |
4019 | } |
4020 | ||
937a21f0 ZK |
4021 | /* Restore fs cookie */ |
4022 | dm_tree_set_cookie(root, fs_get_cookie()); | |
4023 | ||
6a0d97a6 | 4024 | if (!(dlid = build_dm_uuid(dm->mem, lv, laopts->origin_only ? lv_layer(lv) : NULL))) |
5f4b2acf | 4025 | goto_out; |
3e8479bd | 4026 | |
03b49fe1 | 4027 | /* Only process nodes with uuid of "LVM-" plus VG id. */ |
352a99b9 | 4028 | switch(action) { |
5f4b2acf | 4029 | case CLEAN: |
2f260c99 ZK |
4030 | if (retry_deactivation()) |
4031 | dm_tree_retry_remove(root); | |
5f4b2acf | 4032 | /* Deactivate any unused non-toplevel nodes */ |
81beded3 | 4033 | if (!_clean_tree(dm, root, laopts->origin_only ? dlid : NULL)) |
5f4b2acf AK |
4034 | goto_out; |
4035 | break; | |
352a99b9 | 4036 | case DEACTIVATE: |
9fa1d30a PR |
4037 | if (retry_deactivation()) |
4038 | dm_tree_retry_remove(root); | |
409bf6e6 | 4039 | /* Deactivate LV and all devices it references that nothing else has open. */ |
7a6600b1 | 4040 | if (!dm_tree_deactivate_children(root, dlid, DLID_SIZE)) |
a74be32b | 4041 | goto_out; |
5efa3f1e | 4042 | if (!_remove_lv_symlinks(dm, root)) |
922fccc6 ZK |
4043 | log_warn("Failed to remove all device symlinks associated with %s.", |
4044 | display_lvname(lv)); | |
352a99b9 AK |
4045 | break; |
4046 | case SUSPEND: | |
9cd3426d | 4047 | dm_tree_skip_lockfs(root); |
7c1937f8 | 4048 | if (!dm->flush_required) |
33f732c5 | 4049 | dm_tree_use_no_flush_suspend(root); |
36653e89 | 4050 | /* Fall through */ |
9cd3426d | 4051 | case SUSPEND_WITH_LOCKFS: |
7a6600b1 | 4052 | if (!dm_tree_suspend_children(root, dlid, DLID_SIZE)) |
5f4b2acf AK |
4053 | goto_out; |
4054 | break; | |
4055 | case PRELOAD: | |
4056 | case ACTIVATE: | |
4057 | /* Add all required new devices to tree */ | |
a900d150 ZK |
4058 | if (!_add_new_lv_to_dtree(dm, dtree, lv, laopts, |
4059 | (lv_is_origin(lv) && laopts->origin_only) ? "real" : | |
6612d8dd ZK |
4060 | (laopts->origin_only && |
4061 | (lv_is_thin_pool(lv) || | |
4062 | lv_is_vdo_pool(lv))) ? | |
4063 | lv_layer(lv) : NULL)) | |
5f4b2acf AK |
4064 | goto_out; |
4065 | ||
4066 | /* Preload any devices required before any suspensions */ | |
c3d82d71 | 4067 | if (!dm_tree_preload_children(root, dlid, DLID_SIZE)) |
a74be32b | 4068 | goto_out; |
5f4b2acf | 4069 | |
f898cf75 | 4070 | if ((dm_tree_node_size_changed(root) < 0)) |
eb91c4ee | 4071 | dm->flush_required = 1; |
ba41ee1d | 4072 | /* Currently keep the code require flush for any |
d4c03cf7 ZK |
4073 | * non 'thin pool/volume' and size increase */ |
4074 | else if (!lv_is_thin_volume(lv) && | |
4075 | !lv_is_thin_pool(lv) && | |
e26c21cb ZK |
4076 | !lv_is_vdo(lv) && |
4077 | !lv_is_vdo_pool(lv) && | |
d4c03cf7 | 4078 | dm_tree_node_size_changed(root)) |
ba41ee1d ZK |
4079 | dm->flush_required = 1; |
4080 | ||
bd90c6b2 | 4081 | if (action == ACTIVATE) { |
7a6600b1 | 4082 | if (!dm_tree_activate_children(root, dlid, DLID_SIZE)) |
c3d82d71 | 4083 | goto_out; |
4007ac81 | 4084 | if (!_create_lv_symlinks(dm, root)) |
922fccc6 ZK |
4085 | log_warn("Failed to create symlinks for %s.", |
4086 | display_lvname(lv)); | |
bd90c6b2 | 4087 | } |
5f4b2acf | 4088 | |
352a99b9 AK |
4089 | break; |
4090 | default: | |
02f49caa | 4091 | log_error(INTERNAL_ERROR "_tree_action: Action %u not supported.", action); |
3e8479bd | 4092 | goto out; |
08e64ce5 | 4093 | } |
3e8479bd AK |
4094 | r = 1; |
4095 | ||
4096 | out: | |
937a21f0 ZK |
4097 | /* Save fs cookie for udev settle, do not wait here */ |
4098 | fs_set_cookie(dm_tree_get_cookie(root)); | |
4099 | out_no_root: | |
e88f56d9 | 4100 | dm_tree_free(dtree); |
3e8479bd AK |
4101 | |
4102 | return r; | |
4103 | } | |
4104 | ||
2d6fcbf6 | 4105 | /* origin_only may only be set if we are resuming (not activating) an origin LV */ |
84cdf85b | 4106 | int dev_manager_activate(struct dev_manager *dm, const struct logical_volume *lv, |
81beded3 | 4107 | struct lv_activate_opts *laopts) |
5f4b2acf | 4108 | { |
81beded3 | 4109 | if (!_tree_action(dm, lv, laopts, ACTIVATE)) |
5f4b2acf AK |
4110 | return_0; |
4111 | ||
de75bc66 ZK |
4112 | if (!_tree_action(dm, lv, laopts, CLEAN)) |
4113 | return_0; | |
4114 | ||
4115 | return 1; | |
5f4b2acf AK |
4116 | } |
4117 | ||
2d6fcbf6 | 4118 | /* origin_only may only be set if we are resuming (not activating) an origin LV */ |
84cdf85b | 4119 | int dev_manager_preload(struct dev_manager *dm, const struct logical_volume *lv, |
81beded3 | 4120 | struct lv_activate_opts *laopts, int *flush_required) |
5f4b2acf | 4121 | { |
5b2227c2 ZK |
4122 | dm->flush_required = *flush_required; |
4123 | ||
81beded3 | 4124 | if (!_tree_action(dm, lv, laopts, PRELOAD)) |
de75bc66 | 4125 | return_0; |
eb91c4ee MB |
4126 | |
4127 | *flush_required = dm->flush_required; | |
4128 | ||
4129 | return 1; | |
5f4b2acf | 4130 | } |
b427ecee | 4131 | |
84cdf85b | 4132 | int dev_manager_deactivate(struct dev_manager *dm, const struct logical_volume *lv) |
352a99b9 | 4133 | { |
81beded3 | 4134 | struct lv_activate_opts laopts = { 0 }; |
352a99b9 | 4135 | |
de75bc66 ZK |
4136 | if (!_tree_action(dm, lv, &laopts, DEACTIVATE)) |
4137 | return_0; | |
352a99b9 | 4138 | |
de75bc66 | 4139 | return 1; |
352a99b9 AK |
4140 | } |
4141 | ||
84cdf85b | 4142 | int dev_manager_suspend(struct dev_manager *dm, const struct logical_volume *lv, |
81beded3 | 4143 | struct lv_activate_opts *laopts, int lockfs, int flush_required) |
b427ecee | 4144 | { |
eb91c4ee MB |
4145 | dm->flush_required = flush_required; |
4146 | ||
de75bc66 ZK |
4147 | if (!_tree_action(dm, lv, laopts, lockfs ? SUSPEND_WITH_LOCKFS : SUSPEND)) |
4148 | return_0; | |
4149 | ||
4150 | return 1; | |
b427ecee AK |
4151 | } |
4152 | ||
352a99b9 AK |
4153 | /* |
4154 | * Does device use VG somewhere in its construction? | |
4155 | * Returns 1 if uncertain. | |
4156 | */ | |
898e6f8e | 4157 | int dev_manager_device_uses_vg(struct device *dev, |
352a99b9 AK |
4158 | struct volume_group *vg) |
4159 | { | |
e88f56d9 AK |
4160 | struct dm_tree *dtree; |
4161 | struct dm_tree_node *root; | |
08f1ddea | 4162 | char dlid[sizeof(UUID_PREFIX) + sizeof(struct id) - 1] __attribute__((aligned(8))); |
352a99b9 AK |
4163 | int r = 1; |
4164 | ||
e88f56d9 | 4165 | if (!(dtree = dm_tree_create())) { |
81ef4eb4 | 4166 | log_error("Failed to create partial dtree."); |
352a99b9 AK |
4167 | return r; |
4168 | } | |
4169 | ||
eae0314b | 4170 | dm_tree_set_optional_uuid_suffixes(dtree, (const char**)_uuid_suffix_list); |
7cff640d | 4171 | |
cd56b04e ZK |
4172 | if (!dm_tree_add_dev(dtree, MAJOR(dev->dev), MINOR(dev->dev))) { |
4173 | log_error("Failed to add device %s (%u:%u) to dtree.", | |
4174 | dev_name(dev), MAJOR(dev->dev), MINOR(dev->dev)); | |
352a99b9 AK |
4175 | goto out; |
4176 | } | |
4177 | ||
4178 | memcpy(dlid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1); | |
4179 | memcpy(dlid + sizeof(UUID_PREFIX) - 1, &vg->id.uuid[0], sizeof(vg->id)); | |
4180 | ||
e88f56d9 | 4181 | if (!(root = dm_tree_find_node(dtree, 0, 0))) { |
81ef4eb4 | 4182 | log_error("Lost dependency tree root node."); |
352a99b9 AK |
4183 | goto out; |
4184 | } | |
4185 | ||
e88f56d9 | 4186 | if (dm_tree_children_use_uuid(root, dlid, sizeof(UUID_PREFIX) + sizeof(vg->id) - 1)) |
5f4b2acf | 4187 | goto_out; |
352a99b9 AK |
4188 | |
4189 | r = 0; | |
4190 | ||
4191 | out: | |
e88f56d9 | 4192 | dm_tree_free(dtree); |
81ef4eb4 | 4193 | |
352a99b9 AK |
4194 | return r; |
4195 | } | |
264827cb DT |
4196 | |
4197 | /* | |
4198 | * crypt offset is usually the LUKS header size but can be larger. | |
4199 | * The LUKS header is usually 2MB for LUKS1 and 16MB for LUKS2. | |
4200 | * The offset needs to be subtracted from the LV size to get the | |
4201 | * size used to resize the crypt device. | |
4202 | */ | |
4203 | int get_crypt_table_offset(dev_t crypt_devt, uint32_t *offset_bytes) | |
4204 | { | |
73967233 | 4205 | struct dm_task *dmt; |
264827cb DT |
4206 | uint64_t start, length; |
4207 | char *target_type = NULL; | |
4208 | void *next = NULL; | |
4209 | char *params = NULL; | |
4210 | char offset_str[32] = { 0 }; | |
4211 | int copy_offset = 0; | |
4212 | int spaces = 0; | |
5ce236a6 | 4213 | unsigned i, i_off = 0; |
264827cb | 4214 | |
73967233 ZK |
4215 | if (!(dmt = _setup_task_run(DM_DEVICE_TABLE, NULL, NULL, NULL, NULL, |
4216 | MAJOR(crypt_devt), MINOR(crypt_devt), 0, 0, 0))) | |
264827cb | 4217 | return_0; |
264827cb DT |
4218 | |
4219 | next = dm_get_next_target(dmt, next, &start, &length, &target_type, ¶ms); | |
4220 | ||
4221 | if (!target_type || !params || strcmp(target_type, "crypt")) { | |
4222 | dm_task_destroy(dmt); | |
4223 | return_0; | |
4224 | } | |
4225 | ||
4226 | /* | |
4227 | * get offset from params string: | |
4228 | * <cipher> <key> <iv_offset> <device> <offset> [<#opt_params> <opt_params>] | |
4229 | * <offset> is reported in 512 byte sectors. | |
4230 | */ | |
ddf3b6e5 | 4231 | for (i = 0; params[i]; i++) { |
264827cb DT |
4232 | if (params[i] == ' ') { |
4233 | spaces++; | |
4234 | if (spaces == 4) | |
4235 | copy_offset = 1; | |
4236 | if (spaces == 5) | |
4237 | break; | |
4238 | continue; | |
4239 | } | |
4240 | if (!copy_offset) | |
4241 | continue; | |
4242 | ||
4243 | offset_str[i_off++] = params[i]; | |
4244 | ||
4245 | if (i_off == sizeof(offset_str)) { | |
4246 | offset_str[0] = '\0'; | |
4247 | break; | |
4248 | } | |
4249 | } | |
4250 | dm_task_destroy(dmt); | |
4251 | ||
4252 | if (!offset_str[0]) | |
4253 | return_0; | |
4254 | ||
4255 | *offset_bytes = ((uint32_t)strtoul(offset_str, NULL, 0) * 512); | |
4256 | return 1; | |
4257 | } |