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Commit | Line | Data |
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3d0480ed | 1 | /* |
4251236e | 2 | * Copyright (C) 2005-2011 Red Hat, Inc. All rights reserved. |
3d0480ed AK |
3 | * |
4 | * This file is part of the device-mapper userspace tools. | |
5 | * | |
6 | * This copyrighted material is made available to anyone wishing to use, | |
7 | * modify, copy, or redistribute it subject to the terms and conditions | |
8 | * of the GNU Lesser General Public License v.2.1. | |
9 | * | |
10 | * You should have received a copy of the GNU Lesser General Public License | |
11 | * along with this program; if not, write to the Free Software Foundation, | |
12 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
13 | */ | |
14 | ||
3e5b6ed2 | 15 | #include "dmlib.h" |
3d0480ed AK |
16 | #include "libdm-targets.h" |
17 | #include "libdm-common.h" | |
3d0480ed | 18 | #include "kdev_t.h" |
0782ad50 | 19 | #include "dm-ioctl.h" |
3d0480ed AK |
20 | |
21 | #include <stdarg.h> | |
22 | #include <sys/param.h> | |
8f26e18c | 23 | #include <sys/utsname.h> |
3d0480ed | 24 | |
165e4a11 AK |
25 | #define MAX_TARGET_PARAMSIZE 500000 |
26 | ||
87f98002 AK |
27 | /* FIXME Fix interface so this is used only by LVM */ |
28 | #define UUID_PREFIX "LVM-" | |
29 | ||
b262f3e1 ZK |
30 | #define REPLICATOR_LOCAL_SITE 0 |
31 | ||
4251236e ZK |
32 | #define THIN_MIN_DATA_SIZE 128 |
33 | #define THIN_MAX_DATA_SIZE 2097152 | |
34 | #define THIN_MAX_DEVICE_ID ((1 << 24) - 1) | |
35 | ||
36 | #define QUOTE(x) #x | |
37 | ||
165e4a11 AK |
38 | /* Supported segment types */ |
39 | enum { | |
12ca060e MB |
40 | SEG_CRYPT, |
41 | SEG_ERROR, | |
165e4a11 AK |
42 | SEG_LINEAR, |
43 | SEG_MIRRORED, | |
b262f3e1 ZK |
44 | SEG_REPLICATOR, |
45 | SEG_REPLICATOR_DEV, | |
165e4a11 AK |
46 | SEG_SNAPSHOT, |
47 | SEG_SNAPSHOT_ORIGIN, | |
aa6f4e51 | 48 | SEG_SNAPSHOT_MERGE, |
165e4a11 AK |
49 | SEG_STRIPED, |
50 | SEG_ZERO, | |
4251236e ZK |
51 | SEG_THIN_POOL, |
52 | SEG_THIN, | |
cac52ca4 JEB |
53 | SEG_RAID1, |
54 | SEG_RAID4, | |
55 | SEG_RAID5_LA, | |
56 | SEG_RAID5_RA, | |
57 | SEG_RAID5_LS, | |
58 | SEG_RAID5_RS, | |
59 | SEG_RAID6_ZR, | |
60 | SEG_RAID6_NR, | |
61 | SEG_RAID6_NC, | |
62 | SEG_LAST, | |
165e4a11 | 63 | }; |
b4f1578f | 64 | |
165e4a11 AK |
65 | /* FIXME Add crypt and multipath support */ |
66 | ||
67 | struct { | |
68 | unsigned type; | |
69 | const char *target; | |
70 | } dm_segtypes[] = { | |
12ca060e | 71 | { SEG_CRYPT, "crypt" }, |
165e4a11 AK |
72 | { SEG_ERROR, "error" }, |
73 | { SEG_LINEAR, "linear" }, | |
74 | { SEG_MIRRORED, "mirror" }, | |
b262f3e1 ZK |
75 | { SEG_REPLICATOR, "replicator" }, |
76 | { SEG_REPLICATOR_DEV, "replicator-dev" }, | |
165e4a11 AK |
77 | { SEG_SNAPSHOT, "snapshot" }, |
78 | { SEG_SNAPSHOT_ORIGIN, "snapshot-origin" }, | |
aa6f4e51 | 79 | { SEG_SNAPSHOT_MERGE, "snapshot-merge" }, |
165e4a11 AK |
80 | { SEG_STRIPED, "striped" }, |
81 | { SEG_ZERO, "zero"}, | |
4251236e ZK |
82 | { SEG_THIN_POOL, "thin-pool"}, |
83 | { SEG_THIN, "thin"}, | |
cac52ca4 JEB |
84 | { SEG_RAID1, "raid1"}, |
85 | { SEG_RAID4, "raid4"}, | |
86 | { SEG_RAID5_LA, "raid5_la"}, | |
87 | { SEG_RAID5_RA, "raid5_ra"}, | |
88 | { SEG_RAID5_LS, "raid5_ls"}, | |
89 | { SEG_RAID5_RS, "raid5_rs"}, | |
90 | { SEG_RAID6_ZR, "raid6_zr"}, | |
91 | { SEG_RAID6_NR, "raid6_nr"}, | |
92 | { SEG_RAID6_NC, "raid6_nc"}, | |
ee05be08 ZK |
93 | |
94 | /* | |
95 | *WARNING: Since 'raid' target overloads this 1:1 mapping table | |
96 | * for search do not add new enum elements past them! | |
97 | */ | |
cac52ca4 JEB |
98 | { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */ |
99 | { SEG_RAID6_ZR, "raid6"}, /* same as "raid6_zr" */ | |
100 | { SEG_LAST, NULL }, | |
165e4a11 AK |
101 | }; |
102 | ||
103 | /* Some segment types have a list of areas of other devices attached */ | |
104 | struct seg_area { | |
2c44337b | 105 | struct dm_list list; |
165e4a11 | 106 | |
b4f1578f | 107 | struct dm_tree_node *dev_node; |
165e4a11 AK |
108 | |
109 | uint64_t offset; | |
b262f3e1 ZK |
110 | |
111 | unsigned rsite_index; /* Replicator site index */ | |
112 | struct dm_tree_node *slog; /* Replicator sync log node */ | |
113 | uint64_t region_size; /* Replicator sync log size */ | |
114 | uint32_t flags; /* Replicator sync log flags */ | |
115 | }; | |
116 | ||
117 | /* Replicator-log has a list of sites */ | |
118 | /* FIXME: maybe move to seg_area too? */ | |
119 | struct replicator_site { | |
120 | struct dm_list list; | |
121 | ||
122 | unsigned rsite_index; | |
123 | dm_replicator_mode_t mode; | |
124 | uint32_t async_timeout; | |
125 | uint32_t fall_behind_ios; | |
126 | uint64_t fall_behind_data; | |
165e4a11 AK |
127 | }; |
128 | ||
129 | /* Per-segment properties */ | |
130 | struct load_segment { | |
2c44337b | 131 | struct dm_list list; |
165e4a11 AK |
132 | |
133 | unsigned type; | |
134 | ||
135 | uint64_t size; | |
136 | ||
b262f3e1 ZK |
137 | unsigned area_count; /* Linear + Striped + Mirrored + Crypt + Replicator */ |
138 | struct dm_list areas; /* Linear + Striped + Mirrored + Crypt + Replicator */ | |
165e4a11 | 139 | |
cac52ca4 | 140 | uint32_t stripe_size; /* Striped + raid */ |
165e4a11 AK |
141 | |
142 | int persistent; /* Snapshot */ | |
143 | uint32_t chunk_size; /* Snapshot */ | |
b4f1578f AK |
144 | struct dm_tree_node *cow; /* Snapshot */ |
145 | struct dm_tree_node *origin; /* Snapshot + Snapshot origin */ | |
aa6f4e51 | 146 | struct dm_tree_node *merge; /* Snapshot */ |
165e4a11 | 147 | |
b262f3e1 | 148 | struct dm_tree_node *log; /* Mirror + Replicator */ |
cac52ca4 | 149 | uint32_t region_size; /* Mirror + raid */ |
165e4a11 AK |
150 | unsigned clustered; /* Mirror */ |
151 | unsigned mirror_area_count; /* Mirror */ | |
dbcb64b8 | 152 | uint32_t flags; /* Mirror log */ |
67b25ed4 | 153 | char *uuid; /* Clustered mirror log */ |
12ca060e MB |
154 | |
155 | const char *cipher; /* Crypt */ | |
156 | const char *chainmode; /* Crypt */ | |
157 | const char *iv; /* Crypt */ | |
158 | uint64_t iv_offset; /* Crypt */ | |
159 | const char *key; /* Crypt */ | |
b262f3e1 ZK |
160 | |
161 | const char *rlog_type; /* Replicator */ | |
162 | struct dm_list rsites; /* Replicator */ | |
163 | unsigned rsite_count; /* Replicator */ | |
164 | unsigned rdevice_count; /* Replicator */ | |
165 | struct dm_tree_node *replicator;/* Replicator-dev */ | |
166 | uint64_t rdevice_index; /* Replicator-dev */ | |
f439e65b | 167 | |
40e5fd8b | 168 | uint64_t rebuilds; /* raid */ |
4251236e ZK |
169 | |
170 | struct dm_tree_node *metadata; /* Thin_pool */ | |
171 | struct dm_tree_node *pool; /* Thin_pool, Thin */ | |
460c5991 | 172 | uint64_t low_water_mark_size; /* Thin_pool */ |
e0ea24be | 173 | uint32_t data_block_size; /* Thin_pool */ |
460c5991 | 174 | unsigned skip_block_zeroing; /* Thin_pool */ |
4251236e ZK |
175 | uint32_t device_id; /* Thin */ |
176 | ||
165e4a11 AK |
177 | }; |
178 | ||
179 | /* Per-device properties */ | |
180 | struct load_properties { | |
181 | int read_only; | |
182 | uint32_t major; | |
183 | uint32_t minor; | |
184 | ||
52b84409 AK |
185 | uint32_t read_ahead; |
186 | uint32_t read_ahead_flags; | |
187 | ||
e0ea24be ZK |
188 | uint64_t thin_pool_transaction_id; /* Thin_pool */ |
189 | ||
165e4a11 | 190 | unsigned segment_count; |
bb875bb9 | 191 | unsigned size_changed; |
2c44337b | 192 | struct dm_list segs; |
165e4a11 AK |
193 | |
194 | const char *new_name; | |
566515c0 PR |
195 | |
196 | /* If immediate_dev_node is set to 1, try to create the dev node | |
197 | * as soon as possible (e.g. in preload stage even during traversal | |
198 | * and processing of dm tree). This will also flush all stacked dev | |
199 | * node operations, synchronizing with udev. | |
200 | */ | |
df390f17 AK |
201 | unsigned immediate_dev_node; |
202 | ||
203 | /* | |
204 | * If the device size changed from zero and this is set, | |
205 | * don't resume the device immediately, even if the device | |
206 | * has parents. This works provided the parents do not | |
207 | * validate the device size and is required by pvmove to | |
208 | * avoid starting the mirror resync operation too early. | |
209 | */ | |
210 | unsigned delay_resume_if_new; | |
165e4a11 AK |
211 | }; |
212 | ||
213 | /* Two of these used to join two nodes with uses and used_by. */ | |
b4f1578f | 214 | struct dm_tree_link { |
2c44337b | 215 | struct dm_list list; |
b4f1578f | 216 | struct dm_tree_node *node; |
165e4a11 AK |
217 | }; |
218 | ||
b4f1578f AK |
219 | struct dm_tree_node { |
220 | struct dm_tree *dtree; | |
3d0480ed | 221 | |
40e5fd8b AK |
222 | const char *name; |
223 | const char *uuid; | |
224 | struct dm_info info; | |
3d0480ed | 225 | |
40e5fd8b AK |
226 | struct dm_list uses; /* Nodes this node uses */ |
227 | struct dm_list used_by; /* Nodes that use this node */ | |
165e4a11 | 228 | |
56c28292 AK |
229 | int activation_priority; /* 0 gets activated first */ |
230 | ||
f16aea9e PR |
231 | uint16_t udev_flags; /* Udev control flags */ |
232 | ||
165e4a11 AK |
233 | void *context; /* External supplied context */ |
234 | ||
235 | struct load_properties props; /* For creation/table (re)load */ | |
76d1aec8 ZK |
236 | |
237 | /* | |
238 | * If presuspend of child node is needed | |
239 | * Note: only direct child is allowed | |
240 | */ | |
241 | struct dm_tree_node *presuspend_node; | |
3d0480ed AK |
242 | }; |
243 | ||
b4f1578f | 244 | struct dm_tree { |
a3f6b2ce AK |
245 | struct dm_pool *mem; |
246 | struct dm_hash_table *devs; | |
165e4a11 | 247 | struct dm_hash_table *uuids; |
b4f1578f | 248 | struct dm_tree_node root; |
c55b1410 | 249 | int skip_lockfs; /* 1 skips lockfs (for non-snapshots) */ |
787200ef PR |
250 | int no_flush; /* 1 sets noflush (mirrors/multipath) */ |
251 | int retry_remove; /* 1 retries remove if not successful */ | |
bd90c6b2 | 252 | uint32_t cookie; |
3d0480ed AK |
253 | }; |
254 | ||
b4f1578f | 255 | struct dm_tree *dm_tree_create(void) |
3d0480ed | 256 | { |
b4f1578f | 257 | struct dm_tree *dtree; |
3d0480ed | 258 | |
ac0252ca | 259 | if (!(dtree = dm_zalloc(sizeof(*dtree)))) { |
b4f1578f | 260 | log_error("dm_tree_create malloc failed"); |
3d0480ed AK |
261 | return NULL; |
262 | } | |
263 | ||
b4f1578f | 264 | dtree->root.dtree = dtree; |
2c44337b AK |
265 | dm_list_init(&dtree->root.uses); |
266 | dm_list_init(&dtree->root.used_by); | |
c55b1410 | 267 | dtree->skip_lockfs = 0; |
b9ffd32c | 268 | dtree->no_flush = 0; |
3d0480ed | 269 | |
b4f1578f AK |
270 | if (!(dtree->mem = dm_pool_create("dtree", 1024))) { |
271 | log_error("dtree pool creation failed"); | |
272 | dm_free(dtree); | |
3d0480ed AK |
273 | return NULL; |
274 | } | |
275 | ||
b4f1578f AK |
276 | if (!(dtree->devs = dm_hash_create(8))) { |
277 | log_error("dtree hash creation failed"); | |
278 | dm_pool_destroy(dtree->mem); | |
279 | dm_free(dtree); | |
3d0480ed AK |
280 | return NULL; |
281 | } | |
282 | ||
b4f1578f AK |
283 | if (!(dtree->uuids = dm_hash_create(32))) { |
284 | log_error("dtree uuid hash creation failed"); | |
285 | dm_hash_destroy(dtree->devs); | |
286 | dm_pool_destroy(dtree->mem); | |
287 | dm_free(dtree); | |
165e4a11 AK |
288 | return NULL; |
289 | } | |
290 | ||
b4f1578f | 291 | return dtree; |
3d0480ed AK |
292 | } |
293 | ||
b4f1578f | 294 | void dm_tree_free(struct dm_tree *dtree) |
3d0480ed | 295 | { |
b4f1578f | 296 | if (!dtree) |
3d0480ed AK |
297 | return; |
298 | ||
b4f1578f AK |
299 | dm_hash_destroy(dtree->uuids); |
300 | dm_hash_destroy(dtree->devs); | |
301 | dm_pool_destroy(dtree->mem); | |
302 | dm_free(dtree); | |
3d0480ed AK |
303 | } |
304 | ||
04bde319 ZK |
305 | static int _nodes_are_linked(const struct dm_tree_node *parent, |
306 | const struct dm_tree_node *child) | |
3d0480ed | 307 | { |
b4f1578f | 308 | struct dm_tree_link *dlink; |
3d0480ed | 309 | |
2c44337b | 310 | dm_list_iterate_items(dlink, &parent->uses) |
3d0480ed AK |
311 | if (dlink->node == child) |
312 | return 1; | |
3d0480ed AK |
313 | |
314 | return 0; | |
315 | } | |
316 | ||
2c44337b | 317 | static int _link(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 318 | { |
b4f1578f | 319 | struct dm_tree_link *dlink; |
3d0480ed | 320 | |
b4f1578f AK |
321 | if (!(dlink = dm_pool_alloc(node->dtree->mem, sizeof(*dlink)))) { |
322 | log_error("dtree link allocation failed"); | |
3d0480ed AK |
323 | return 0; |
324 | } | |
325 | ||
326 | dlink->node = node; | |
2c44337b | 327 | dm_list_add(list, &dlink->list); |
3d0480ed AK |
328 | |
329 | return 1; | |
330 | } | |
331 | ||
b4f1578f AK |
332 | static int _link_nodes(struct dm_tree_node *parent, |
333 | struct dm_tree_node *child) | |
3d0480ed AK |
334 | { |
335 | if (_nodes_are_linked(parent, child)) | |
336 | return 1; | |
337 | ||
338 | if (!_link(&parent->uses, child)) | |
339 | return 0; | |
340 | ||
341 | if (!_link(&child->used_by, parent)) | |
342 | return 0; | |
343 | ||
344 | return 1; | |
345 | } | |
346 | ||
2c44337b | 347 | static void _unlink(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 348 | { |
b4f1578f | 349 | struct dm_tree_link *dlink; |
3d0480ed | 350 | |
2c44337b | 351 | dm_list_iterate_items(dlink, list) |
3d0480ed | 352 | if (dlink->node == node) { |
2c44337b | 353 | dm_list_del(&dlink->list); |
3d0480ed AK |
354 | break; |
355 | } | |
3d0480ed AK |
356 | } |
357 | ||
b4f1578f AK |
358 | static void _unlink_nodes(struct dm_tree_node *parent, |
359 | struct dm_tree_node *child) | |
3d0480ed AK |
360 | { |
361 | if (!_nodes_are_linked(parent, child)) | |
362 | return; | |
363 | ||
364 | _unlink(&parent->uses, child); | |
365 | _unlink(&child->used_by, parent); | |
366 | } | |
367 | ||
b4f1578f | 368 | static int _add_to_toplevel(struct dm_tree_node *node) |
165e4a11 | 369 | { |
b4f1578f | 370 | return _link_nodes(&node->dtree->root, node); |
165e4a11 AK |
371 | } |
372 | ||
b4f1578f | 373 | static void _remove_from_toplevel(struct dm_tree_node *node) |
3d0480ed | 374 | { |
b1ebf028 | 375 | _unlink_nodes(&node->dtree->root, node); |
3d0480ed AK |
376 | } |
377 | ||
b4f1578f | 378 | static int _add_to_bottomlevel(struct dm_tree_node *node) |
3d0480ed | 379 | { |
b4f1578f | 380 | return _link_nodes(node, &node->dtree->root); |
3d0480ed AK |
381 | } |
382 | ||
b4f1578f | 383 | static void _remove_from_bottomlevel(struct dm_tree_node *node) |
165e4a11 | 384 | { |
b1ebf028 | 385 | _unlink_nodes(node, &node->dtree->root); |
165e4a11 AK |
386 | } |
387 | ||
b4f1578f | 388 | static int _link_tree_nodes(struct dm_tree_node *parent, struct dm_tree_node *child) |
165e4a11 AK |
389 | { |
390 | /* Don't link to root node if child already has a parent */ | |
f77736ca | 391 | if (parent == &parent->dtree->root) { |
b4f1578f | 392 | if (dm_tree_node_num_children(child, 1)) |
165e4a11 AK |
393 | return 1; |
394 | } else | |
395 | _remove_from_toplevel(child); | |
396 | ||
f77736ca | 397 | if (child == &child->dtree->root) { |
b4f1578f | 398 | if (dm_tree_node_num_children(parent, 0)) |
165e4a11 AK |
399 | return 1; |
400 | } else | |
401 | _remove_from_bottomlevel(parent); | |
402 | ||
403 | return _link_nodes(parent, child); | |
404 | } | |
405 | ||
b4f1578f | 406 | static struct dm_tree_node *_create_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
407 | const char *name, |
408 | const char *uuid, | |
165e4a11 | 409 | struct dm_info *info, |
f16aea9e PR |
410 | void *context, |
411 | uint16_t udev_flags) | |
3d0480ed | 412 | { |
b4f1578f | 413 | struct dm_tree_node *node; |
3d0480ed AK |
414 | uint64_t dev; |
415 | ||
b4f1578f AK |
416 | if (!(node = dm_pool_zalloc(dtree->mem, sizeof(*node)))) { |
417 | log_error("_create_dm_tree_node alloc failed"); | |
3d0480ed AK |
418 | return NULL; |
419 | } | |
420 | ||
b4f1578f | 421 | node->dtree = dtree; |
3d0480ed AK |
422 | |
423 | node->name = name; | |
424 | node->uuid = uuid; | |
425 | node->info = *info; | |
165e4a11 | 426 | node->context = context; |
f16aea9e | 427 | node->udev_flags = udev_flags; |
56c28292 | 428 | node->activation_priority = 0; |
3d0480ed | 429 | |
2c44337b AK |
430 | dm_list_init(&node->uses); |
431 | dm_list_init(&node->used_by); | |
432 | dm_list_init(&node->props.segs); | |
3d0480ed AK |
433 | |
434 | dev = MKDEV(info->major, info->minor); | |
435 | ||
b4f1578f | 436 | if (!dm_hash_insert_binary(dtree->devs, (const char *) &dev, |
3d0480ed | 437 | sizeof(dev), node)) { |
b4f1578f AK |
438 | log_error("dtree node hash insertion failed"); |
439 | dm_pool_free(dtree->mem, node); | |
3d0480ed AK |
440 | return NULL; |
441 | } | |
442 | ||
165e4a11 | 443 | if (uuid && *uuid && |
b4f1578f AK |
444 | !dm_hash_insert(dtree->uuids, uuid, node)) { |
445 | log_error("dtree uuid hash insertion failed"); | |
446 | dm_hash_remove_binary(dtree->devs, (const char *) &dev, | |
165e4a11 | 447 | sizeof(dev)); |
b4f1578f | 448 | dm_pool_free(dtree->mem, node); |
165e4a11 AK |
449 | return NULL; |
450 | } | |
451 | ||
3d0480ed AK |
452 | return node; |
453 | } | |
454 | ||
b4f1578f | 455 | static struct dm_tree_node *_find_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
456 | uint32_t major, uint32_t minor) |
457 | { | |
458 | uint64_t dev = MKDEV(major, minor); | |
459 | ||
b4f1578f | 460 | return dm_hash_lookup_binary(dtree->devs, (const char *) &dev, |
3d0480ed AK |
461 | sizeof(dev)); |
462 | } | |
463 | ||
b4f1578f | 464 | static struct dm_tree_node *_find_dm_tree_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
465 | const char *uuid) |
466 | { | |
87f98002 AK |
467 | struct dm_tree_node *node; |
468 | ||
469 | if ((node = dm_hash_lookup(dtree->uuids, uuid))) | |
470 | return node; | |
471 | ||
472 | if (strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) | |
473 | return NULL; | |
474 | ||
475 | return dm_hash_lookup(dtree->uuids, uuid + sizeof(UUID_PREFIX) - 1); | |
165e4a11 AK |
476 | } |
477 | ||
a3f6b2ce | 478 | static int _deps(struct dm_task **dmt, struct dm_pool *mem, uint32_t major, uint32_t minor, |
3d0480ed AK |
479 | const char **name, const char **uuid, |
480 | struct dm_info *info, struct dm_deps **deps) | |
481 | { | |
482 | memset(info, 0, sizeof(*info)); | |
483 | ||
484 | if (!dm_is_dm_major(major)) { | |
485 | *name = ""; | |
486 | *uuid = ""; | |
487 | *deps = NULL; | |
488 | info->major = major; | |
489 | info->minor = minor; | |
490 | info->exists = 0; | |
165e4a11 AK |
491 | info->live_table = 0; |
492 | info->inactive_table = 0; | |
493 | info->read_only = 0; | |
3d0480ed AK |
494 | return 1; |
495 | } | |
496 | ||
497 | if (!(*dmt = dm_task_create(DM_DEVICE_DEPS))) { | |
498 | log_error("deps dm_task creation failed"); | |
499 | return 0; | |
500 | } | |
501 | ||
b4f1578f AK |
502 | if (!dm_task_set_major(*dmt, major)) { |
503 | log_error("_deps: failed to set major for (%" PRIu32 ":%" PRIu32 ")", | |
504 | major, minor); | |
3d0480ed | 505 | goto failed; |
b4f1578f | 506 | } |
3d0480ed | 507 | |
b4f1578f AK |
508 | if (!dm_task_set_minor(*dmt, minor)) { |
509 | log_error("_deps: failed to set minor for (%" PRIu32 ":%" PRIu32 ")", | |
510 | major, minor); | |
3d0480ed | 511 | goto failed; |
b4f1578f | 512 | } |
3d0480ed | 513 | |
b4f1578f AK |
514 | if (!dm_task_run(*dmt)) { |
515 | log_error("_deps: task run failed for (%" PRIu32 ":%" PRIu32 ")", | |
516 | major, minor); | |
3d0480ed | 517 | goto failed; |
b4f1578f | 518 | } |
3d0480ed | 519 | |
b4f1578f AK |
520 | if (!dm_task_get_info(*dmt, info)) { |
521 | log_error("_deps: failed to get info for (%" PRIu32 ":%" PRIu32 ")", | |
522 | major, minor); | |
3d0480ed | 523 | goto failed; |
b4f1578f | 524 | } |
3d0480ed AK |
525 | |
526 | if (!info->exists) { | |
527 | *name = ""; | |
528 | *uuid = ""; | |
529 | *deps = NULL; | |
530 | } else { | |
531 | if (info->major != major) { | |
b4f1578f | 532 | log_error("Inconsistent dtree major number: %u != %u", |
3d0480ed AK |
533 | major, info->major); |
534 | goto failed; | |
535 | } | |
536 | if (info->minor != minor) { | |
b4f1578f | 537 | log_error("Inconsistent dtree minor number: %u != %u", |
3d0480ed AK |
538 | minor, info->minor); |
539 | goto failed; | |
540 | } | |
a3f6b2ce | 541 | if (!(*name = dm_pool_strdup(mem, dm_task_get_name(*dmt)))) { |
3d0480ed AK |
542 | log_error("name pool_strdup failed"); |
543 | goto failed; | |
544 | } | |
a3f6b2ce | 545 | if (!(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(*dmt)))) { |
3d0480ed AK |
546 | log_error("uuid pool_strdup failed"); |
547 | goto failed; | |
548 | } | |
549 | *deps = dm_task_get_deps(*dmt); | |
550 | } | |
551 | ||
552 | return 1; | |
553 | ||
554 | failed: | |
555 | dm_task_destroy(*dmt); | |
556 | return 0; | |
557 | } | |
558 | ||
b4f1578f AK |
559 | static struct dm_tree_node *_add_dev(struct dm_tree *dtree, |
560 | struct dm_tree_node *parent, | |
cda69e17 PR |
561 | uint32_t major, uint32_t minor, |
562 | uint16_t udev_flags) | |
3d0480ed AK |
563 | { |
564 | struct dm_task *dmt = NULL; | |
565 | struct dm_info info; | |
566 | struct dm_deps *deps = NULL; | |
567 | const char *name = NULL; | |
568 | const char *uuid = NULL; | |
b4f1578f | 569 | struct dm_tree_node *node = NULL; |
3d0480ed | 570 | uint32_t i; |
3d0480ed AK |
571 | int new = 0; |
572 | ||
573 | /* Already in tree? */ | |
b4f1578f AK |
574 | if (!(node = _find_dm_tree_node(dtree, major, minor))) { |
575 | if (!_deps(&dmt, dtree->mem, major, minor, &name, &uuid, &info, &deps)) | |
576 | return_NULL; | |
3d0480ed | 577 | |
f16aea9e | 578 | if (!(node = _create_dm_tree_node(dtree, name, uuid, &info, |
cda69e17 | 579 | NULL, udev_flags))) |
b4f1578f | 580 | goto_out; |
3d0480ed AK |
581 | new = 1; |
582 | } | |
583 | ||
165e4a11 AK |
584 | if (!_link_tree_nodes(parent, node)) { |
585 | node = NULL; | |
b4f1578f | 586 | goto_out; |
165e4a11 | 587 | } |
3d0480ed AK |
588 | |
589 | /* If node was already in tree, no need to recurse. */ | |
590 | if (!new) | |
165e4a11 | 591 | goto out; |
3d0480ed AK |
592 | |
593 | /* Can't recurse if not a mapped device or there are no dependencies */ | |
594 | if (!node->info.exists || !deps->count) { | |
b4f1578f AK |
595 | if (!_add_to_bottomlevel(node)) { |
596 | stack; | |
165e4a11 | 597 | node = NULL; |
b4f1578f | 598 | } |
165e4a11 | 599 | goto out; |
3d0480ed AK |
600 | } |
601 | ||
602 | /* Add dependencies to tree */ | |
603 | for (i = 0; i < deps->count; i++) | |
b4f1578f | 604 | if (!_add_dev(dtree, node, MAJOR(deps->device[i]), |
cda69e17 | 605 | MINOR(deps->device[i]), udev_flags)) { |
165e4a11 | 606 | node = NULL; |
b4f1578f | 607 | goto_out; |
165e4a11 | 608 | } |
3d0480ed | 609 | |
3d0480ed AK |
610 | out: |
611 | if (dmt) | |
612 | dm_task_destroy(dmt); | |
613 | ||
165e4a11 AK |
614 | return node; |
615 | } | |
616 | ||
b4f1578f | 617 | static int _node_clear_table(struct dm_tree_node *dnode) |
165e4a11 AK |
618 | { |
619 | struct dm_task *dmt; | |
620 | struct dm_info *info; | |
621 | const char *name; | |
622 | int r; | |
623 | ||
624 | if (!(info = &dnode->info)) { | |
b4f1578f | 625 | log_error("_node_clear_table failed: missing info"); |
165e4a11 AK |
626 | return 0; |
627 | } | |
628 | ||
b4f1578f AK |
629 | if (!(name = dm_tree_node_get_name(dnode))) { |
630 | log_error("_node_clear_table failed: missing name"); | |
165e4a11 AK |
631 | return 0; |
632 | } | |
633 | ||
634 | /* Is there a table? */ | |
635 | if (!info->exists || !info->inactive_table) | |
636 | return 1; | |
637 | ||
10d0d9c7 AK |
638 | // FIXME Get inactive deps. If any dev referenced has 1 opener and no live table, remove it after the clear. |
639 | ||
165e4a11 AK |
640 | log_verbose("Clearing inactive table %s (%" PRIu32 ":%" PRIu32 ")", |
641 | name, info->major, info->minor); | |
642 | ||
643 | if (!(dmt = dm_task_create(DM_DEVICE_CLEAR))) { | |
165e4a11 AK |
644 | log_error("Table clear dm_task creation failed for %s", name); |
645 | return 0; | |
646 | } | |
647 | ||
648 | if (!dm_task_set_major(dmt, info->major) || | |
649 | !dm_task_set_minor(dmt, info->minor)) { | |
650 | log_error("Failed to set device number for %s table clear", name); | |
651 | dm_task_destroy(dmt); | |
652 | return 0; | |
653 | } | |
654 | ||
655 | r = dm_task_run(dmt); | |
656 | ||
657 | if (!dm_task_get_info(dmt, info)) { | |
b4f1578f | 658 | log_error("_node_clear_table failed: info missing after running task for %s", name); |
165e4a11 AK |
659 | r = 0; |
660 | } | |
661 | ||
662 | dm_task_destroy(dmt); | |
663 | ||
3d0480ed AK |
664 | return r; |
665 | } | |
666 | ||
b4f1578f | 667 | struct dm_tree_node *dm_tree_add_new_dev(struct dm_tree *dtree, |
165e4a11 AK |
668 | const char *name, |
669 | const char *uuid, | |
670 | uint32_t major, uint32_t minor, | |
671 | int read_only, | |
672 | int clear_inactive, | |
673 | void *context) | |
674 | { | |
b4f1578f | 675 | struct dm_tree_node *dnode; |
165e4a11 AK |
676 | struct dm_info info; |
677 | const char *name2; | |
678 | const char *uuid2; | |
679 | ||
680 | /* Do we need to add node to tree? */ | |
b4f1578f AK |
681 | if (!(dnode = dm_tree_find_node_by_uuid(dtree, uuid))) { |
682 | if (!(name2 = dm_pool_strdup(dtree->mem, name))) { | |
165e4a11 AK |
683 | log_error("name pool_strdup failed"); |
684 | return NULL; | |
685 | } | |
b4f1578f | 686 | if (!(uuid2 = dm_pool_strdup(dtree->mem, uuid))) { |
165e4a11 AK |
687 | log_error("uuid pool_strdup failed"); |
688 | return NULL; | |
689 | } | |
690 | ||
691 | info.major = 0; | |
692 | info.minor = 0; | |
693 | info.exists = 0; | |
694 | info.live_table = 0; | |
695 | info.inactive_table = 0; | |
696 | info.read_only = 0; | |
697 | ||
f16aea9e PR |
698 | if (!(dnode = _create_dm_tree_node(dtree, name2, uuid2, &info, |
699 | context, 0))) | |
b4f1578f | 700 | return_NULL; |
165e4a11 AK |
701 | |
702 | /* Attach to root node until a table is supplied */ | |
b4f1578f AK |
703 | if (!_add_to_toplevel(dnode) || !_add_to_bottomlevel(dnode)) |
704 | return_NULL; | |
165e4a11 AK |
705 | |
706 | dnode->props.major = major; | |
707 | dnode->props.minor = minor; | |
708 | dnode->props.new_name = NULL; | |
bb875bb9 | 709 | dnode->props.size_changed = 0; |
165e4a11 AK |
710 | } else if (strcmp(name, dnode->name)) { |
711 | /* Do we need to rename node? */ | |
b4f1578f | 712 | if (!(dnode->props.new_name = dm_pool_strdup(dtree->mem, name))) { |
165e4a11 AK |
713 | log_error("name pool_strdup failed"); |
714 | return 0; | |
715 | } | |
716 | } | |
717 | ||
718 | dnode->props.read_only = read_only ? 1 : 0; | |
52b84409 AK |
719 | dnode->props.read_ahead = DM_READ_AHEAD_AUTO; |
720 | dnode->props.read_ahead_flags = 0; | |
165e4a11 | 721 | |
b4f1578f AK |
722 | if (clear_inactive && !_node_clear_table(dnode)) |
723 | return_NULL; | |
165e4a11 AK |
724 | |
725 | dnode->context = context; | |
f16aea9e | 726 | dnode->udev_flags = 0; |
165e4a11 AK |
727 | |
728 | return dnode; | |
729 | } | |
730 | ||
f16aea9e PR |
731 | struct dm_tree_node *dm_tree_add_new_dev_with_udev_flags(struct dm_tree *dtree, |
732 | const char *name, | |
733 | const char *uuid, | |
734 | uint32_t major, | |
735 | uint32_t minor, | |
736 | int read_only, | |
737 | int clear_inactive, | |
738 | void *context, | |
739 | uint16_t udev_flags) | |
740 | { | |
741 | struct dm_tree_node *node; | |
742 | ||
743 | if ((node = dm_tree_add_new_dev(dtree, name, uuid, major, minor, read_only, | |
744 | clear_inactive, context))) | |
745 | node->udev_flags = udev_flags; | |
746 | ||
747 | return node; | |
748 | } | |
749 | ||
750 | ||
52b84409 AK |
751 | void dm_tree_node_set_read_ahead(struct dm_tree_node *dnode, |
752 | uint32_t read_ahead, | |
753 | uint32_t read_ahead_flags) | |
08e64ce5 | 754 | { |
52b84409 AK |
755 | dnode->props.read_ahead = read_ahead; |
756 | dnode->props.read_ahead_flags = read_ahead_flags; | |
757 | } | |
758 | ||
76d1aec8 ZK |
759 | void dm_tree_node_set_presuspend_node(struct dm_tree_node *node, |
760 | struct dm_tree_node *presuspend_node) | |
761 | { | |
762 | node->presuspend_node = presuspend_node; | |
763 | } | |
764 | ||
b4f1578f | 765 | int dm_tree_add_dev(struct dm_tree *dtree, uint32_t major, uint32_t minor) |
3d0480ed | 766 | { |
cda69e17 PR |
767 | return _add_dev(dtree, &dtree->root, major, minor, 0) ? 1 : 0; |
768 | } | |
769 | ||
770 | int dm_tree_add_dev_with_udev_flags(struct dm_tree *dtree, uint32_t major, | |
771 | uint32_t minor, uint16_t udev_flags) | |
772 | { | |
773 | return _add_dev(dtree, &dtree->root, major, minor, udev_flags) ? 1 : 0; | |
3d0480ed AK |
774 | } |
775 | ||
04bde319 | 776 | const char *dm_tree_node_get_name(const struct dm_tree_node *node) |
3d0480ed AK |
777 | { |
778 | return node->info.exists ? node->name : ""; | |
779 | } | |
780 | ||
04bde319 | 781 | const char *dm_tree_node_get_uuid(const struct dm_tree_node *node) |
3d0480ed AK |
782 | { |
783 | return node->info.exists ? node->uuid : ""; | |
784 | } | |
785 | ||
04bde319 | 786 | const struct dm_info *dm_tree_node_get_info(const struct dm_tree_node *node) |
3d0480ed AK |
787 | { |
788 | return &node->info; | |
789 | } | |
790 | ||
04bde319 | 791 | void *dm_tree_node_get_context(const struct dm_tree_node *node) |
165e4a11 AK |
792 | { |
793 | return node->context; | |
794 | } | |
795 | ||
04bde319 | 796 | int dm_tree_node_size_changed(const struct dm_tree_node *dnode) |
eb91c4ee MB |
797 | { |
798 | return dnode->props.size_changed; | |
799 | } | |
800 | ||
04bde319 | 801 | int dm_tree_node_num_children(const struct dm_tree_node *node, uint32_t inverted) |
3d0480ed AK |
802 | { |
803 | if (inverted) { | |
b4f1578f | 804 | if (_nodes_are_linked(&node->dtree->root, node)) |
3d0480ed | 805 | return 0; |
2c44337b | 806 | return dm_list_size(&node->used_by); |
3d0480ed AK |
807 | } |
808 | ||
b4f1578f | 809 | if (_nodes_are_linked(node, &node->dtree->root)) |
3d0480ed AK |
810 | return 0; |
811 | ||
2c44337b | 812 | return dm_list_size(&node->uses); |
3d0480ed AK |
813 | } |
814 | ||
2b69db1f AK |
815 | /* |
816 | * Returns 1 if no prefix supplied | |
817 | */ | |
818 | static int _uuid_prefix_matches(const char *uuid, const char *uuid_prefix, size_t uuid_prefix_len) | |
819 | { | |
820 | if (!uuid_prefix) | |
821 | return 1; | |
822 | ||
823 | if (!strncmp(uuid, uuid_prefix, uuid_prefix_len)) | |
824 | return 1; | |
825 | ||
826 | /* Handle transition: active device uuids might be missing the prefix */ | |
827 | if (uuid_prefix_len <= 4) | |
828 | return 0; | |
829 | ||
87f98002 | 830 | if (!strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) |
872dea04 AK |
831 | return 0; |
832 | ||
87f98002 | 833 | if (strncmp(uuid_prefix, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) |
2b69db1f AK |
834 | return 0; |
835 | ||
87f98002 | 836 | if (!strncmp(uuid, uuid_prefix + sizeof(UUID_PREFIX) - 1, uuid_prefix_len - (sizeof(UUID_PREFIX) - 1))) |
2b69db1f AK |
837 | return 1; |
838 | ||
839 | return 0; | |
840 | } | |
841 | ||
690a5da2 AK |
842 | /* |
843 | * Returns 1 if no children. | |
844 | */ | |
b4f1578f | 845 | static int _children_suspended(struct dm_tree_node *node, |
690a5da2 AK |
846 | uint32_t inverted, |
847 | const char *uuid_prefix, | |
848 | size_t uuid_prefix_len) | |
849 | { | |
2c44337b | 850 | struct dm_list *list; |
b4f1578f | 851 | struct dm_tree_link *dlink; |
690a5da2 AK |
852 | const struct dm_info *dinfo; |
853 | const char *uuid; | |
854 | ||
855 | if (inverted) { | |
b4f1578f | 856 | if (_nodes_are_linked(&node->dtree->root, node)) |
690a5da2 AK |
857 | return 1; |
858 | list = &node->used_by; | |
859 | } else { | |
b4f1578f | 860 | if (_nodes_are_linked(node, &node->dtree->root)) |
690a5da2 AK |
861 | return 1; |
862 | list = &node->uses; | |
863 | } | |
864 | ||
2c44337b | 865 | dm_list_iterate_items(dlink, list) { |
b4f1578f | 866 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { |
690a5da2 AK |
867 | stack; |
868 | continue; | |
869 | } | |
870 | ||
871 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 872 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 AK |
873 | continue; |
874 | ||
76d1aec8 ZK |
875 | /* Ignore if parent node wants to presuspend this node */ |
876 | if (dlink->node->presuspend_node == node) | |
877 | continue; | |
878 | ||
b4f1578f AK |
879 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { |
880 | stack; /* FIXME Is this normal? */ | |
690a5da2 AK |
881 | return 0; |
882 | } | |
883 | ||
884 | if (!dinfo->suspended) | |
885 | return 0; | |
886 | } | |
887 | ||
888 | return 1; | |
889 | } | |
890 | ||
3d0480ed AK |
891 | /* |
892 | * Set major and minor to zero for root of tree. | |
893 | */ | |
b4f1578f | 894 | struct dm_tree_node *dm_tree_find_node(struct dm_tree *dtree, |
3d0480ed AK |
895 | uint32_t major, |
896 | uint32_t minor) | |
897 | { | |
898 | if (!major && !minor) | |
b4f1578f | 899 | return &dtree->root; |
3d0480ed | 900 | |
b4f1578f | 901 | return _find_dm_tree_node(dtree, major, minor); |
3d0480ed AK |
902 | } |
903 | ||
165e4a11 AK |
904 | /* |
905 | * Set uuid to NULL for root of tree. | |
906 | */ | |
b4f1578f | 907 | struct dm_tree_node *dm_tree_find_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
908 | const char *uuid) |
909 | { | |
910 | if (!uuid || !*uuid) | |
b4f1578f | 911 | return &dtree->root; |
165e4a11 | 912 | |
b4f1578f | 913 | return _find_dm_tree_node_by_uuid(dtree, uuid); |
165e4a11 AK |
914 | } |
915 | ||
3d0480ed AK |
916 | /* |
917 | * First time set *handle to NULL. | |
918 | * Set inverted to invert the tree. | |
919 | */ | |
b4f1578f | 920 | struct dm_tree_node *dm_tree_next_child(void **handle, |
04bde319 ZK |
921 | const struct dm_tree_node *parent, |
922 | uint32_t inverted) | |
3d0480ed | 923 | { |
2c44337b | 924 | struct dm_list **dlink = (struct dm_list **) handle; |
04bde319 | 925 | const struct dm_list *use_list; |
3d0480ed AK |
926 | |
927 | if (inverted) | |
928 | use_list = &parent->used_by; | |
929 | else | |
930 | use_list = &parent->uses; | |
931 | ||
932 | if (!*dlink) | |
2c44337b | 933 | *dlink = dm_list_first(use_list); |
3d0480ed | 934 | else |
2c44337b | 935 | *dlink = dm_list_next(use_list, *dlink); |
3d0480ed | 936 | |
2c44337b | 937 | return (*dlink) ? dm_list_item(*dlink, struct dm_tree_link)->node : NULL; |
3d0480ed AK |
938 | } |
939 | ||
3e8c6b73 | 940 | /* |
a6d97ede | 941 | * Deactivate a device with its dependencies if the uuid prefix matches. |
3e8c6b73 | 942 | */ |
db208f51 AK |
943 | static int _info_by_dev(uint32_t major, uint32_t minor, int with_open_count, |
944 | struct dm_info *info) | |
3e8c6b73 AK |
945 | { |
946 | struct dm_task *dmt; | |
947 | int r; | |
948 | ||
949 | if (!(dmt = dm_task_create(DM_DEVICE_INFO))) { | |
950 | log_error("_info_by_dev: dm_task creation failed"); | |
951 | return 0; | |
952 | } | |
953 | ||
954 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
955 | log_error("_info_by_dev: Failed to set device number"); | |
956 | dm_task_destroy(dmt); | |
957 | return 0; | |
958 | } | |
959 | ||
db208f51 AK |
960 | if (!with_open_count && !dm_task_no_open_count(dmt)) |
961 | log_error("Failed to disable open_count"); | |
962 | ||
3e8c6b73 AK |
963 | if ((r = dm_task_run(dmt))) |
964 | r = dm_task_get_info(dmt, info); | |
965 | ||
966 | dm_task_destroy(dmt); | |
967 | ||
968 | return r; | |
969 | } | |
970 | ||
125712be PR |
971 | static int _check_device_not_in_use(struct dm_info *info) |
972 | { | |
973 | if (!info->exists) | |
974 | return 1; | |
975 | ||
976 | /* If sysfs is not used, use open_count information only. */ | |
c3e5b497 PR |
977 | if (!*dm_sysfs_dir()) { |
978 | if (info->open_count) { | |
979 | log_error("Device %" PRIu32 ":%" PRIu32 " in use", | |
980 | info->major, info->minor); | |
981 | return 0; | |
982 | } | |
983 | ||
984 | return 1; | |
985 | } | |
125712be PR |
986 | |
987 | if (dm_device_has_holders(info->major, info->minor)) { | |
988 | log_error("Device %" PRIu32 ":%" PRIu32 " is used " | |
989 | "by another device.", info->major, info->minor); | |
990 | return 0; | |
991 | } | |
992 | ||
993 | if (dm_device_has_mounted_fs(info->major, info->minor)) { | |
994 | log_error("Device %" PRIu32 ":%" PRIu32 " contains " | |
995 | "a filesystem in use.", info->major, info->minor); | |
996 | return 0; | |
997 | } | |
998 | ||
999 | return 1; | |
1000 | } | |
1001 | ||
f3ef15ef ZK |
1002 | /* Check if all parent nodes of given node have open_count == 0 */ |
1003 | static int _node_has_closed_parents(struct dm_tree_node *node, | |
1004 | const char *uuid_prefix, | |
1005 | size_t uuid_prefix_len) | |
1006 | { | |
1007 | struct dm_tree_link *dlink; | |
1008 | const struct dm_info *dinfo; | |
1009 | struct dm_info info; | |
1010 | const char *uuid; | |
1011 | ||
1012 | /* Iterate through parents of this node */ | |
1013 | dm_list_iterate_items(dlink, &node->used_by) { | |
1014 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { | |
1015 | stack; | |
1016 | continue; | |
1017 | } | |
1018 | ||
1019 | /* Ignore if it doesn't belong to this VG */ | |
1020 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) | |
1021 | continue; | |
1022 | ||
1023 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { | |
1024 | stack; /* FIXME Is this normal? */ | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | /* Refresh open_count */ | |
1029 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) || | |
1030 | !info.exists) | |
1031 | continue; | |
1032 | ||
eb418883 ZK |
1033 | if (info.open_count) { |
1034 | log_debug("Node %s %d:%d has open_count %d", uuid_prefix, | |
1035 | dinfo->major, dinfo->minor, info.open_count); | |
f3ef15ef | 1036 | return 0; |
eb418883 | 1037 | } |
f3ef15ef ZK |
1038 | } |
1039 | ||
1040 | return 1; | |
1041 | } | |
1042 | ||
f16aea9e | 1043 | static int _deactivate_node(const char *name, uint32_t major, uint32_t minor, |
787200ef | 1044 | uint32_t *cookie, uint16_t udev_flags, int retry) |
3e8c6b73 AK |
1045 | { |
1046 | struct dm_task *dmt; | |
bd90c6b2 | 1047 | int r = 0; |
3e8c6b73 AK |
1048 | |
1049 | log_verbose("Removing %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1050 | ||
1051 | if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) { | |
1052 | log_error("Deactivation dm_task creation failed for %s", name); | |
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1057 | log_error("Failed to set device number for %s deactivation", name); | |
bd90c6b2 | 1058 | goto out; |
3e8c6b73 AK |
1059 | } |
1060 | ||
1061 | if (!dm_task_no_open_count(dmt)) | |
1062 | log_error("Failed to disable open_count"); | |
1063 | ||
f16aea9e | 1064 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1065 | goto out; |
1066 | ||
787200ef PR |
1067 | |
1068 | if (retry) | |
1069 | dm_task_retry_remove(dmt); | |
1070 | ||
3e8c6b73 AK |
1071 | r = dm_task_run(dmt); |
1072 | ||
0437bccc AK |
1073 | /* FIXME Until kernel returns actual name so dm-iface.c can handle it */ |
1074 | rm_dev_node(name, dmt->cookie_set && !(udev_flags & DM_UDEV_DISABLE_DM_RULES_FLAG), | |
9032898e | 1075 | dmt->cookie_set && (udev_flags & DM_UDEV_DISABLE_LIBRARY_FALLBACK)); |
165e4a11 | 1076 | |
db208f51 AK |
1077 | /* FIXME Remove node from tree or mark invalid? */ |
1078 | ||
bd90c6b2 | 1079 | out: |
db208f51 AK |
1080 | dm_task_destroy(dmt); |
1081 | ||
1082 | return r; | |
1083 | } | |
1084 | ||
bd90c6b2 | 1085 | static int _rename_node(const char *old_name, const char *new_name, uint32_t major, |
f16aea9e | 1086 | uint32_t minor, uint32_t *cookie, uint16_t udev_flags) |
165e4a11 AK |
1087 | { |
1088 | struct dm_task *dmt; | |
1089 | int r = 0; | |
1090 | ||
1091 | log_verbose("Renaming %s (%" PRIu32 ":%" PRIu32 ") to %s", old_name, major, minor, new_name); | |
1092 | ||
1093 | if (!(dmt = dm_task_create(DM_DEVICE_RENAME))) { | |
1094 | log_error("Rename dm_task creation failed for %s", old_name); | |
1095 | return 0; | |
1096 | } | |
1097 | ||
1098 | if (!dm_task_set_name(dmt, old_name)) { | |
1099 | log_error("Failed to set name for %s rename.", old_name); | |
1100 | goto out; | |
1101 | } | |
1102 | ||
b4f1578f | 1103 | if (!dm_task_set_newname(dmt, new_name)) |
40e5fd8b | 1104 | goto_out; |
165e4a11 AK |
1105 | |
1106 | if (!dm_task_no_open_count(dmt)) | |
1107 | log_error("Failed to disable open_count"); | |
1108 | ||
f16aea9e | 1109 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1110 | goto out; |
1111 | ||
165e4a11 AK |
1112 | r = dm_task_run(dmt); |
1113 | ||
1114 | out: | |
1115 | dm_task_destroy(dmt); | |
1116 | ||
1117 | return r; | |
1118 | } | |
1119 | ||
165e4a11 AK |
1120 | /* FIXME Merge with _suspend_node? */ |
1121 | static int _resume_node(const char *name, uint32_t major, uint32_t minor, | |
52b84409 | 1122 | uint32_t read_ahead, uint32_t read_ahead_flags, |
f16aea9e | 1123 | struct dm_info *newinfo, uint32_t *cookie, |
1840aa09 | 1124 | uint16_t udev_flags, int already_suspended) |
165e4a11 AK |
1125 | { |
1126 | struct dm_task *dmt; | |
bd90c6b2 | 1127 | int r = 0; |
165e4a11 AK |
1128 | |
1129 | log_verbose("Resuming %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1130 | ||
1131 | if (!(dmt = dm_task_create(DM_DEVICE_RESUME))) { | |
9a8f192a | 1132 | log_debug("Suspend dm_task creation failed for %s.", name); |
165e4a11 AK |
1133 | return 0; |
1134 | } | |
1135 | ||
0b7d16bc AK |
1136 | /* FIXME Kernel should fill in name on return instead */ |
1137 | if (!dm_task_set_name(dmt, name)) { | |
9a8f192a | 1138 | log_debug("Failed to set device name for %s resumption.", name); |
bd90c6b2 | 1139 | goto out; |
0b7d16bc AK |
1140 | } |
1141 | ||
165e4a11 AK |
1142 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { |
1143 | log_error("Failed to set device number for %s resumption.", name); | |
bd90c6b2 | 1144 | goto out; |
165e4a11 AK |
1145 | } |
1146 | ||
1147 | if (!dm_task_no_open_count(dmt)) | |
1148 | log_error("Failed to disable open_count"); | |
1149 | ||
52b84409 AK |
1150 | if (!dm_task_set_read_ahead(dmt, read_ahead, read_ahead_flags)) |
1151 | log_error("Failed to set read ahead"); | |
1152 | ||
f16aea9e | 1153 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
9a8f192a | 1154 | goto_out; |
bd90c6b2 | 1155 | |
9a8f192a ZK |
1156 | if (!(r = dm_task_run(dmt))) |
1157 | goto_out; | |
1158 | ||
1159 | if (already_suspended) | |
1160 | dec_suspended(); | |
1161 | ||
1162 | if (!(r = dm_task_get_info(dmt, newinfo))) | |
1163 | stack; | |
165e4a11 | 1164 | |
bd90c6b2 | 1165 | out: |
165e4a11 AK |
1166 | dm_task_destroy(dmt); |
1167 | ||
1168 | return r; | |
1169 | } | |
1170 | ||
db208f51 | 1171 | static int _suspend_node(const char *name, uint32_t major, uint32_t minor, |
b9ffd32c | 1172 | int skip_lockfs, int no_flush, struct dm_info *newinfo) |
db208f51 AK |
1173 | { |
1174 | struct dm_task *dmt; | |
1175 | int r; | |
1176 | ||
b9ffd32c AK |
1177 | log_verbose("Suspending %s (%" PRIu32 ":%" PRIu32 ")%s%s", |
1178 | name, major, minor, | |
1179 | skip_lockfs ? "" : " with filesystem sync", | |
6e1898a5 | 1180 | no_flush ? "" : " with device flush"); |
db208f51 AK |
1181 | |
1182 | if (!(dmt = dm_task_create(DM_DEVICE_SUSPEND))) { | |
1183 | log_error("Suspend dm_task creation failed for %s", name); | |
1184 | return 0; | |
1185 | } | |
1186 | ||
1187 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1188 | log_error("Failed to set device number for %s suspension.", name); | |
1189 | dm_task_destroy(dmt); | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | if (!dm_task_no_open_count(dmt)) | |
1194 | log_error("Failed to disable open_count"); | |
1195 | ||
c55b1410 AK |
1196 | if (skip_lockfs && !dm_task_skip_lockfs(dmt)) |
1197 | log_error("Failed to set skip_lockfs flag."); | |
1198 | ||
b9ffd32c AK |
1199 | if (no_flush && !dm_task_no_flush(dmt)) |
1200 | log_error("Failed to set no_flush flag."); | |
1201 | ||
1840aa09 AK |
1202 | if ((r = dm_task_run(dmt))) { |
1203 | inc_suspended(); | |
db208f51 | 1204 | r = dm_task_get_info(dmt, newinfo); |
1840aa09 | 1205 | } |
db208f51 | 1206 | |
3e8c6b73 AK |
1207 | dm_task_destroy(dmt); |
1208 | ||
1209 | return r; | |
1210 | } | |
1211 | ||
e0ea24be ZK |
1212 | static int _check_thin_pool_transaction_id(const char *name, uint32_t major, uint32_t minor, |
1213 | uint64_t transaction_id) | |
1214 | { | |
1215 | struct dm_task *dmt; | |
1216 | int r = 0; | |
1217 | uint64_t start, length; | |
1218 | char *type = NULL; | |
1219 | char *params = NULL; | |
1220 | uint64_t t_id = transaction_id; // FIXME: fake | |
1221 | ||
1222 | log_verbose("Checking transaction id %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1223 | ||
1224 | if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) { | |
1225 | log_debug("Device status dm_task creation failed for %s.", name); | |
1226 | return 0; | |
1227 | } | |
1228 | ||
1229 | if (!dm_task_set_name(dmt, name)) { | |
1230 | log_debug("Failed to set device name for %s status.", name); | |
1231 | goto out; | |
1232 | } | |
1233 | ||
1234 | if (!dm_task_set_major_minor(dmt, major, minor, 1)) { | |
1235 | log_error("Failed to set device number for %s status.", name); | |
1236 | goto out; | |
1237 | } | |
1238 | ||
1239 | if (!dm_task_no_open_count(dmt)) | |
1240 | log_error("Failed to disable open_count"); | |
1241 | ||
1242 | if (!(r = dm_task_run(dmt))) | |
1243 | goto_out; | |
1244 | ||
1245 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); | |
1246 | log_verbose("PARSE params %s", params); // FIXME: parse status | |
1247 | ||
1248 | r = (transaction_id == t_id); | |
1249 | ||
1250 | out: | |
1251 | dm_task_destroy(dmt); | |
1252 | ||
1253 | return r; | |
1254 | } | |
1255 | ||
18e0f934 AK |
1256 | /* |
1257 | * FIXME Don't attempt to deactivate known internal dependencies. | |
1258 | */ | |
1259 | static int _dm_tree_deactivate_children(struct dm_tree_node *dnode, | |
1260 | const char *uuid_prefix, | |
1261 | size_t uuid_prefix_len, | |
1262 | unsigned level) | |
3e8c6b73 | 1263 | { |
b7eb2ad0 | 1264 | int r = 1; |
3e8c6b73 | 1265 | void *handle = NULL; |
b4f1578f | 1266 | struct dm_tree_node *child = dnode; |
3e8c6b73 AK |
1267 | struct dm_info info; |
1268 | const struct dm_info *dinfo; | |
1269 | const char *name; | |
1270 | const char *uuid; | |
1271 | ||
b4f1578f AK |
1272 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1273 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
3e8c6b73 AK |
1274 | stack; |
1275 | continue; | |
1276 | } | |
1277 | ||
b4f1578f | 1278 | if (!(name = dm_tree_node_get_name(child))) { |
3e8c6b73 AK |
1279 | stack; |
1280 | continue; | |
1281 | } | |
1282 | ||
b4f1578f | 1283 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
3e8c6b73 AK |
1284 | stack; |
1285 | continue; | |
1286 | } | |
1287 | ||
1288 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1289 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
3e8c6b73 | 1290 | continue; |
3e8c6b73 AK |
1291 | |
1292 | /* Refresh open_count */ | |
db208f51 | 1293 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) || |
f55021f4 | 1294 | !info.exists) |
3e8c6b73 AK |
1295 | continue; |
1296 | ||
125712be PR |
1297 | if (!_check_device_not_in_use(&info)) |
1298 | continue; | |
1299 | ||
f3ef15ef | 1300 | /* Also checking open_count in parent nodes of presuspend_node */ |
125712be | 1301 | if ((child->presuspend_node && |
f3ef15ef ZK |
1302 | !_node_has_closed_parents(child->presuspend_node, |
1303 | uuid_prefix, uuid_prefix_len))) { | |
18e0f934 AK |
1304 | /* Only report error from (likely non-internal) dependency at top level */ |
1305 | if (!level) { | |
1306 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1307 | ":%" PRIu32 ")", name, info.major, | |
1308 | info.minor); | |
1309 | r = 0; | |
1310 | } | |
f55021f4 AK |
1311 | continue; |
1312 | } | |
1313 | ||
76d1aec8 ZK |
1314 | /* Suspend child node first if requested */ |
1315 | if (child->presuspend_node && | |
1316 | !dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) | |
1317 | continue; | |
1318 | ||
f16aea9e | 1319 | if (!_deactivate_node(name, info.major, info.minor, |
787200ef PR |
1320 | &child->dtree->cookie, child->udev_flags, |
1321 | child->dtree->retry_remove)) { | |
3e8c6b73 AK |
1322 | log_error("Unable to deactivate %s (%" PRIu32 |
1323 | ":%" PRIu32 ")", name, info.major, | |
1324 | info.minor); | |
b7eb2ad0 | 1325 | r = 0; |
3e8c6b73 | 1326 | continue; |
f4249251 AK |
1327 | } else if (info.suspended) |
1328 | dec_suspended(); | |
3e8c6b73 | 1329 | |
18e0f934 AK |
1330 | if (dm_tree_node_num_children(child, 0)) { |
1331 | if (!_dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len, level + 1)) | |
b7eb2ad0 | 1332 | return_0; |
18e0f934 | 1333 | } |
3e8c6b73 AK |
1334 | } |
1335 | ||
b7eb2ad0 | 1336 | return r; |
3e8c6b73 | 1337 | } |
db208f51 | 1338 | |
18e0f934 AK |
1339 | int dm_tree_deactivate_children(struct dm_tree_node *dnode, |
1340 | const char *uuid_prefix, | |
1341 | size_t uuid_prefix_len) | |
1342 | { | |
1343 | return _dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len, 0); | |
1344 | } | |
1345 | ||
c55b1410 AK |
1346 | void dm_tree_skip_lockfs(struct dm_tree_node *dnode) |
1347 | { | |
1348 | dnode->dtree->skip_lockfs = 1; | |
1349 | } | |
1350 | ||
b9ffd32c AK |
1351 | void dm_tree_use_no_flush_suspend(struct dm_tree_node *dnode) |
1352 | { | |
1353 | dnode->dtree->no_flush = 1; | |
1354 | } | |
1355 | ||
787200ef PR |
1356 | void dm_tree_retry_remove(struct dm_tree_node *dnode) |
1357 | { | |
1358 | dnode->dtree->retry_remove = 1; | |
1359 | } | |
1360 | ||
b4f1578f | 1361 | int dm_tree_suspend_children(struct dm_tree_node *dnode, |
08e64ce5 ZK |
1362 | const char *uuid_prefix, |
1363 | size_t uuid_prefix_len) | |
db208f51 | 1364 | { |
68085c93 | 1365 | int r = 1; |
db208f51 | 1366 | void *handle = NULL; |
b4f1578f | 1367 | struct dm_tree_node *child = dnode; |
db208f51 AK |
1368 | struct dm_info info, newinfo; |
1369 | const struct dm_info *dinfo; | |
1370 | const char *name; | |
1371 | const char *uuid; | |
1372 | ||
690a5da2 | 1373 | /* Suspend nodes at this level of the tree */ |
b4f1578f AK |
1374 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1375 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
db208f51 AK |
1376 | stack; |
1377 | continue; | |
1378 | } | |
1379 | ||
b4f1578f | 1380 | if (!(name = dm_tree_node_get_name(child))) { |
db208f51 AK |
1381 | stack; |
1382 | continue; | |
1383 | } | |
1384 | ||
b4f1578f | 1385 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
db208f51 AK |
1386 | stack; |
1387 | continue; | |
1388 | } | |
1389 | ||
1390 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1391 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
db208f51 AK |
1392 | continue; |
1393 | ||
690a5da2 AK |
1394 | /* Ensure immediate parents are already suspended */ |
1395 | if (!_children_suspended(child, 1, uuid_prefix, uuid_prefix_len)) | |
1396 | continue; | |
1397 | ||
db208f51 | 1398 | if (!_info_by_dev(dinfo->major, dinfo->minor, 0, &info) || |
b700541f | 1399 | !info.exists || info.suspended) |
db208f51 AK |
1400 | continue; |
1401 | ||
c55b1410 | 1402 | if (!_suspend_node(name, info.major, info.minor, |
b9ffd32c AK |
1403 | child->dtree->skip_lockfs, |
1404 | child->dtree->no_flush, &newinfo)) { | |
db208f51 AK |
1405 | log_error("Unable to suspend %s (%" PRIu32 |
1406 | ":%" PRIu32 ")", name, info.major, | |
1407 | info.minor); | |
68085c93 | 1408 | r = 0; |
db208f51 AK |
1409 | continue; |
1410 | } | |
1411 | ||
1412 | /* Update cached info */ | |
1413 | child->info = newinfo; | |
690a5da2 AK |
1414 | } |
1415 | ||
1416 | /* Then suspend any child nodes */ | |
1417 | handle = NULL; | |
1418 | ||
b4f1578f AK |
1419 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1420 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
690a5da2 AK |
1421 | stack; |
1422 | continue; | |
1423 | } | |
1424 | ||
1425 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 | 1426 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 | 1427 | continue; |
db208f51 | 1428 | |
b4f1578f | 1429 | if (dm_tree_node_num_children(child, 0)) |
68085c93 MS |
1430 | if (!dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) |
1431 | return_0; | |
db208f51 AK |
1432 | } |
1433 | ||
68085c93 | 1434 | return r; |
db208f51 AK |
1435 | } |
1436 | ||
b4f1578f | 1437 | int dm_tree_activate_children(struct dm_tree_node *dnode, |
db208f51 AK |
1438 | const char *uuid_prefix, |
1439 | size_t uuid_prefix_len) | |
1440 | { | |
2ca6b865 | 1441 | int r = 1; |
db208f51 | 1442 | void *handle = NULL; |
b4f1578f | 1443 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
1444 | struct dm_info newinfo; |
1445 | const char *name; | |
db208f51 | 1446 | const char *uuid; |
56c28292 | 1447 | int priority; |
db208f51 | 1448 | |
165e4a11 | 1449 | /* Activate children first */ |
b4f1578f AK |
1450 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1451 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
165e4a11 AK |
1452 | stack; |
1453 | continue; | |
db208f51 AK |
1454 | } |
1455 | ||
908db078 AK |
1456 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1457 | continue; | |
db208f51 | 1458 | |
b4f1578f | 1459 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
1460 | if (!dm_tree_activate_children(child, uuid_prefix, uuid_prefix_len)) |
1461 | return_0; | |
56c28292 | 1462 | } |
165e4a11 | 1463 | |
56c28292 | 1464 | handle = NULL; |
165e4a11 | 1465 | |
aa6f4e51 | 1466 | for (priority = 0; priority < 3; priority++) { |
56c28292 | 1467 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
a5a31ce9 ZK |
1468 | if (priority != child->activation_priority) |
1469 | continue; | |
1470 | ||
56c28292 AK |
1471 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
1472 | stack; | |
1473 | continue; | |
165e4a11 | 1474 | } |
165e4a11 | 1475 | |
56c28292 AK |
1476 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1477 | continue; | |
165e4a11 | 1478 | |
56c28292 AK |
1479 | if (!(name = dm_tree_node_get_name(child))) { |
1480 | stack; | |
1481 | continue; | |
1482 | } | |
1483 | ||
1484 | /* Rename? */ | |
1485 | if (child->props.new_name) { | |
bd90c6b2 | 1486 | if (!_rename_node(name, child->props.new_name, child->info.major, |
f16aea9e PR |
1487 | child->info.minor, &child->dtree->cookie, |
1488 | child->udev_flags)) { | |
56c28292 AK |
1489 | log_error("Failed to rename %s (%" PRIu32 |
1490 | ":%" PRIu32 ") to %s", name, child->info.major, | |
1491 | child->info.minor, child->props.new_name); | |
1492 | return 0; | |
1493 | } | |
1494 | child->name = child->props.new_name; | |
1495 | child->props.new_name = NULL; | |
1496 | } | |
1497 | ||
1498 | if (!child->info.inactive_table && !child->info.suspended) | |
1499 | continue; | |
1500 | ||
bafa2f39 | 1501 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 1502 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 | 1503 | &newinfo, &child->dtree->cookie, child->udev_flags, child->info.suspended)) { |
56c28292 | 1504 | log_error("Unable to resume %s (%" PRIu32 |
bafa2f39 | 1505 | ":%" PRIu32 ")", child->name, child->info.major, |
56c28292 | 1506 | child->info.minor); |
2ca6b865 | 1507 | r = 0; |
56c28292 AK |
1508 | continue; |
1509 | } | |
1510 | ||
1511 | /* Update cached info */ | |
1512 | child->info = newinfo; | |
e0ea24be ZK |
1513 | |
1514 | /* FIXME: trial version - to avoid use of unsynchronized thin_pool transaction_id */ | |
1515 | if (child->props.thin_pool_transaction_id && | |
1516 | !_check_thin_pool_transaction_id(child->name, child->info.major, | |
1517 | child->info.minor, | |
1518 | child->props.thin_pool_transaction_id)) { | |
1519 | stack; | |
1520 | if (!(dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len))) | |
1521 | log_error("Failed to deactivate %s", child->name); | |
1522 | r = 0; | |
1523 | continue; | |
1524 | } | |
56c28292 | 1525 | } |
db208f51 AK |
1526 | } |
1527 | ||
165e4a11 AK |
1528 | handle = NULL; |
1529 | ||
2ca6b865 | 1530 | return r; |
165e4a11 AK |
1531 | } |
1532 | ||
b4f1578f | 1533 | static int _create_node(struct dm_tree_node *dnode) |
165e4a11 AK |
1534 | { |
1535 | int r = 0; | |
1536 | struct dm_task *dmt; | |
1537 | ||
1538 | log_verbose("Creating %s", dnode->name); | |
1539 | ||
1540 | if (!(dmt = dm_task_create(DM_DEVICE_CREATE))) { | |
1541 | log_error("Create dm_task creation failed for %s", dnode->name); | |
1542 | return 0; | |
1543 | } | |
1544 | ||
1545 | if (!dm_task_set_name(dmt, dnode->name)) { | |
1546 | log_error("Failed to set device name for %s", dnode->name); | |
1547 | goto out; | |
1548 | } | |
1549 | ||
1550 | if (!dm_task_set_uuid(dmt, dnode->uuid)) { | |
1551 | log_error("Failed to set uuid for %s", dnode->name); | |
1552 | goto out; | |
1553 | } | |
1554 | ||
1555 | if (dnode->props.major && | |
1556 | (!dm_task_set_major(dmt, dnode->props.major) || | |
1557 | !dm_task_set_minor(dmt, dnode->props.minor))) { | |
1558 | log_error("Failed to set device number for %s creation.", dnode->name); | |
1559 | goto out; | |
1560 | } | |
1561 | ||
1562 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
1563 | log_error("Failed to set read only flag for %s", dnode->name); | |
1564 | goto out; | |
1565 | } | |
1566 | ||
1567 | if (!dm_task_no_open_count(dmt)) | |
1568 | log_error("Failed to disable open_count"); | |
1569 | ||
1570 | if ((r = dm_task_run(dmt))) | |
1571 | r = dm_task_get_info(dmt, &dnode->info); | |
1572 | ||
1573 | out: | |
1574 | dm_task_destroy(dmt); | |
1575 | ||
1576 | return r; | |
1577 | } | |
1578 | ||
1579 | ||
b4f1578f | 1580 | static int _build_dev_string(char *devbuf, size_t bufsize, struct dm_tree_node *node) |
165e4a11 AK |
1581 | { |
1582 | if (!dm_format_dev(devbuf, bufsize, node->info.major, node->info.minor)) { | |
40e5fd8b AK |
1583 | log_error("Failed to format %s device number for %s as dm " |
1584 | "target (%u,%u)", | |
1585 | node->name, node->uuid, node->info.major, node->info.minor); | |
1586 | return 0; | |
165e4a11 AK |
1587 | } |
1588 | ||
1589 | return 1; | |
1590 | } | |
1591 | ||
ffa9b6a5 ZK |
1592 | /* simplify string emiting code */ |
1593 | #define EMIT_PARAMS(p, str...)\ | |
7b6c011c AK |
1594 | do {\ |
1595 | int w;\ | |
1596 | if ((w = dm_snprintf(params + p, paramsize - (size_t) p, str)) < 0) {\ | |
1597 | stack; /* Out of space */\ | |
1598 | return -1;\ | |
1599 | }\ | |
1600 | p += w;\ | |
1601 | } while (0) | |
ffa9b6a5 | 1602 | |
3c74075f JEB |
1603 | /* |
1604 | * _emit_areas_line | |
1605 | * | |
1606 | * Returns: 1 on success, 0 on failure | |
1607 | */ | |
08f1ddea | 1608 | static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)), |
4dcaa230 AK |
1609 | struct load_segment *seg, char *params, |
1610 | size_t paramsize, int *pos) | |
165e4a11 AK |
1611 | { |
1612 | struct seg_area *area; | |
7d7d93ac | 1613 | char devbuf[DM_FORMAT_DEV_BUFSIZE]; |
609faae9 | 1614 | unsigned first_time = 1; |
db3c1ac1 | 1615 | const char *logtype, *synctype; |
b262f3e1 | 1616 | unsigned log_parm_count; |
165e4a11 | 1617 | |
2c44337b | 1618 | dm_list_iterate_items(area, &seg->areas) { |
b262f3e1 ZK |
1619 | switch (seg->type) { |
1620 | case SEG_REPLICATOR_DEV: | |
6d04311e JEB |
1621 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1622 | return_0; | |
1623 | ||
b262f3e1 ZK |
1624 | EMIT_PARAMS(*pos, " %d 1 %s", area->rsite_index, devbuf); |
1625 | if (first_time) | |
1626 | EMIT_PARAMS(*pos, " nolog 0"); | |
1627 | else { | |
1628 | /* Remote devices */ | |
1629 | log_parm_count = (area->flags & | |
1630 | (DM_NOSYNC | DM_FORCESYNC)) ? 2 : 1; | |
1631 | ||
1632 | if (!area->slog) { | |
1633 | devbuf[0] = 0; /* Only core log parameters */ | |
1634 | logtype = "core"; | |
1635 | } else { | |
1636 | devbuf[0] = ' '; /* Extra space before device name */ | |
1637 | if (!_build_dev_string(devbuf + 1, | |
1638 | sizeof(devbuf) - 1, | |
1639 | area->slog)) | |
1640 | return_0; | |
1641 | logtype = "disk"; | |
1642 | log_parm_count++; /* Extra sync log device name parameter */ | |
1643 | } | |
1644 | ||
1645 | EMIT_PARAMS(*pos, " %s %u%s %" PRIu64, logtype, | |
1646 | log_parm_count, devbuf, area->region_size); | |
1647 | ||
db3c1ac1 AK |
1648 | synctype = (area->flags & DM_NOSYNC) ? |
1649 | " nosync" : (area->flags & DM_FORCESYNC) ? | |
1650 | " sync" : NULL; | |
b262f3e1 | 1651 | |
db3c1ac1 AK |
1652 | if (synctype) |
1653 | EMIT_PARAMS(*pos, "%s", synctype); | |
b262f3e1 ZK |
1654 | } |
1655 | break; | |
cac52ca4 JEB |
1656 | case SEG_RAID1: |
1657 | case SEG_RAID4: | |
1658 | case SEG_RAID5_LA: | |
1659 | case SEG_RAID5_RA: | |
1660 | case SEG_RAID5_LS: | |
1661 | case SEG_RAID5_RS: | |
1662 | case SEG_RAID6_ZR: | |
1663 | case SEG_RAID6_NR: | |
1664 | case SEG_RAID6_NC: | |
6d04311e JEB |
1665 | if (!area->dev_node) { |
1666 | EMIT_PARAMS(*pos, " -"); | |
1667 | break; | |
1668 | } | |
1669 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) | |
1670 | return_0; | |
1671 | ||
cac52ca4 JEB |
1672 | EMIT_PARAMS(*pos, " %s", devbuf); |
1673 | break; | |
b262f3e1 | 1674 | default: |
6d04311e JEB |
1675 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1676 | return_0; | |
1677 | ||
b262f3e1 ZK |
1678 | EMIT_PARAMS(*pos, "%s%s %" PRIu64, first_time ? "" : " ", |
1679 | devbuf, area->offset); | |
1680 | } | |
609faae9 AK |
1681 | |
1682 | first_time = 0; | |
165e4a11 AK |
1683 | } |
1684 | ||
1685 | return 1; | |
1686 | } | |
1687 | ||
b262f3e1 ZK |
1688 | static int _replicator_emit_segment_line(const struct load_segment *seg, char *params, |
1689 | size_t paramsize, int *pos) | |
1690 | { | |
1691 | const struct load_segment *rlog_seg; | |
1692 | struct replicator_site *rsite; | |
1693 | char rlogbuf[DM_FORMAT_DEV_BUFSIZE]; | |
1694 | unsigned parm_count; | |
1695 | ||
1696 | if (!seg->log || !_build_dev_string(rlogbuf, sizeof(rlogbuf), seg->log)) | |
1697 | return_0; | |
1698 | ||
1699 | rlog_seg = dm_list_item(dm_list_last(&seg->log->props.segs), | |
1700 | struct load_segment); | |
1701 | ||
1702 | EMIT_PARAMS(*pos, "%s 4 %s 0 auto %" PRIu64, | |
1703 | seg->rlog_type, rlogbuf, rlog_seg->size); | |
1704 | ||
1705 | dm_list_iterate_items(rsite, &seg->rsites) { | |
1706 | parm_count = (rsite->fall_behind_data | |
1707 | || rsite->fall_behind_ios | |
1708 | || rsite->async_timeout) ? 4 : 2; | |
1709 | ||
1710 | EMIT_PARAMS(*pos, " blockdev %u %u %s", parm_count, rsite->rsite_index, | |
1711 | (rsite->mode == DM_REPLICATOR_SYNC) ? "synchronous" : "asynchronous"); | |
1712 | ||
1713 | if (rsite->fall_behind_data) | |
1714 | EMIT_PARAMS(*pos, " data %" PRIu64, rsite->fall_behind_data); | |
1715 | else if (rsite->fall_behind_ios) | |
1716 | EMIT_PARAMS(*pos, " ios %" PRIu32, rsite->fall_behind_ios); | |
1717 | else if (rsite->async_timeout) | |
1718 | EMIT_PARAMS(*pos, " timeout %" PRIu32, rsite->async_timeout); | |
1719 | } | |
1720 | ||
1721 | return 1; | |
1722 | } | |
1723 | ||
3c74075f | 1724 | /* |
3c74075f JEB |
1725 | * Returns: 1 on success, 0 on failure |
1726 | */ | |
beecb1e1 ZK |
1727 | static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *seg, |
1728 | char *params, size_t paramsize) | |
165e4a11 | 1729 | { |
8f26e18c JEB |
1730 | int block_on_error = 0; |
1731 | int handle_errors = 0; | |
1732 | int dm_log_userspace = 0; | |
1733 | struct utsname uts; | |
dbcb64b8 | 1734 | unsigned log_parm_count; |
b39fdcf4 | 1735 | int pos = 0, parts; |
7d7d93ac | 1736 | char logbuf[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 1737 | const char *logtype; |
b39fdcf4 | 1738 | unsigned kmaj = 0, kmin = 0, krel = 0; |
165e4a11 | 1739 | |
b39fdcf4 MB |
1740 | if (uname(&uts) == -1) { |
1741 | log_error("Cannot read kernel release version."); | |
1742 | return 0; | |
1743 | } | |
1744 | ||
1745 | /* Kernels with a major number of 2 always had 3 parts. */ | |
1746 | parts = sscanf(uts.release, "%u.%u.%u", &kmaj, &kmin, &krel); | |
1747 | if (parts < 1 || (kmaj < 3 && parts < 3)) { | |
1748 | log_error("Wrong kernel release version %s.", uts.release); | |
30a65310 ZK |
1749 | return 0; |
1750 | } | |
67b25ed4 | 1751 | |
8f26e18c JEB |
1752 | if ((seg->flags & DM_BLOCK_ON_ERROR)) { |
1753 | /* | |
1754 | * Originally, block_on_error was an argument to the log | |
1755 | * portion of the mirror CTR table. It was renamed to | |
1756 | * "handle_errors" and now resides in the 'features' | |
1757 | * section of the mirror CTR table (i.e. at the end). | |
1758 | * | |
1759 | * We can identify whether to use "block_on_error" or | |
1760 | * "handle_errors" by the dm-mirror module's version | |
1761 | * number (>= 1.12) or by the kernel version (>= 2.6.22). | |
1762 | */ | |
ba61f848 | 1763 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 22)) |
8f26e18c JEB |
1764 | handle_errors = 1; |
1765 | else | |
1766 | block_on_error = 1; | |
1767 | } | |
1768 | ||
1769 | if (seg->clustered) { | |
1770 | /* Cluster mirrors require a UUID */ | |
1771 | if (!seg->uuid) | |
1772 | return_0; | |
1773 | ||
1774 | /* | |
1775 | * Cluster mirrors used to have their own log | |
1776 | * types. Now they are accessed through the | |
1777 | * userspace log type. | |
1778 | * | |
1779 | * The dm-log-userspace module was added to the | |
1780 | * 2.6.31 kernel. | |
1781 | */ | |
ba61f848 | 1782 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 31)) |
8f26e18c JEB |
1783 | dm_log_userspace = 1; |
1784 | } | |
1785 | ||
1786 | /* Region size */ | |
1787 | log_parm_count = 1; | |
1788 | ||
1789 | /* [no]sync, block_on_error etc. */ | |
1790 | log_parm_count += hweight32(seg->flags); | |
311d6d81 | 1791 | |
8f26e18c JEB |
1792 | /* "handle_errors" is a feature arg now */ |
1793 | if (handle_errors) | |
1794 | log_parm_count--; | |
1795 | ||
1796 | /* DM_CORELOG does not count in the param list */ | |
1797 | if (seg->flags & DM_CORELOG) | |
1798 | log_parm_count--; | |
1799 | ||
1800 | if (seg->clustered) { | |
1801 | log_parm_count++; /* For UUID */ | |
1802 | ||
1803 | if (!dm_log_userspace) | |
ffa9b6a5 | 1804 | EMIT_PARAMS(pos, "clustered-"); |
49b95a5e JEB |
1805 | else |
1806 | /* For clustered-* type field inserted later */ | |
1807 | log_parm_count++; | |
8f26e18c | 1808 | } |
dbcb64b8 | 1809 | |
8f26e18c JEB |
1810 | if (!seg->log) |
1811 | logtype = "core"; | |
1812 | else { | |
1813 | logtype = "disk"; | |
1814 | log_parm_count++; | |
1815 | if (!_build_dev_string(logbuf, sizeof(logbuf), seg->log)) | |
1816 | return_0; | |
1817 | } | |
dbcb64b8 | 1818 | |
8f26e18c JEB |
1819 | if (dm_log_userspace) |
1820 | EMIT_PARAMS(pos, "userspace %u %s clustered-%s", | |
1821 | log_parm_count, seg->uuid, logtype); | |
1822 | else | |
ffa9b6a5 | 1823 | EMIT_PARAMS(pos, "%s %u", logtype, log_parm_count); |
dbcb64b8 | 1824 | |
8f26e18c JEB |
1825 | if (seg->log) |
1826 | EMIT_PARAMS(pos, " %s", logbuf); | |
1827 | ||
1828 | EMIT_PARAMS(pos, " %u", seg->region_size); | |
dbcb64b8 | 1829 | |
8f26e18c JEB |
1830 | if (seg->clustered && !dm_log_userspace) |
1831 | EMIT_PARAMS(pos, " %s", seg->uuid); | |
67b25ed4 | 1832 | |
8f26e18c JEB |
1833 | if ((seg->flags & DM_NOSYNC)) |
1834 | EMIT_PARAMS(pos, " nosync"); | |
1835 | else if ((seg->flags & DM_FORCESYNC)) | |
1836 | EMIT_PARAMS(pos, " sync"); | |
dbcb64b8 | 1837 | |
8f26e18c JEB |
1838 | if (block_on_error) |
1839 | EMIT_PARAMS(pos, " block_on_error"); | |
1840 | ||
1841 | EMIT_PARAMS(pos, " %u ", seg->mirror_area_count); | |
1842 | ||
5f3325fc | 1843 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) |
3c74075f | 1844 | return_0; |
dbcb64b8 | 1845 | |
8f26e18c JEB |
1846 | if (handle_errors) |
1847 | EMIT_PARAMS(pos, " 1 handle_errors"); | |
ffa9b6a5 | 1848 | |
3c74075f | 1849 | return 1; |
8f26e18c JEB |
1850 | } |
1851 | ||
cac52ca4 JEB |
1852 | static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, |
1853 | uint32_t minor, struct load_segment *seg, | |
1854 | uint64_t *seg_start, char *params, | |
1855 | size_t paramsize) | |
1856 | { | |
f439e65b | 1857 | uint32_t i, *tmp; |
cac52ca4 JEB |
1858 | int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */ |
1859 | int pos = 0; | |
1860 | ||
1861 | if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC)) | |
1862 | param_count++; | |
1863 | ||
1864 | if (seg->region_size) | |
1865 | param_count += 2; | |
1866 | ||
f439e65b JEB |
1867 | tmp = (uint32_t *)(&seg->rebuilds); /* rebuilds is 64-bit */ |
1868 | param_count += 2 * hweight32(tmp[0]); | |
1869 | param_count += 2 * hweight32(tmp[1]); | |
1870 | ||
cac52ca4 JEB |
1871 | if ((seg->type == SEG_RAID1) && seg->stripe_size) |
1872 | log_error("WARNING: Ignoring RAID1 stripe size"); | |
1873 | ||
1874 | EMIT_PARAMS(pos, "%s %d %u", dm_segtypes[seg->type].target, | |
1875 | param_count, seg->stripe_size); | |
1876 | ||
1877 | if (seg->flags & DM_NOSYNC) | |
1878 | EMIT_PARAMS(pos, " nosync"); | |
1879 | else if (seg->flags & DM_FORCESYNC) | |
1880 | EMIT_PARAMS(pos, " sync"); | |
1881 | ||
1882 | if (seg->region_size) | |
1883 | EMIT_PARAMS(pos, " region_size %u", seg->region_size); | |
1884 | ||
f439e65b JEB |
1885 | for (i = 0; i < (seg->area_count / 2); i++) |
1886 | if (seg->rebuilds & (1 << i)) | |
1887 | EMIT_PARAMS(pos, " rebuild %u", i); | |
1888 | ||
cac52ca4 JEB |
1889 | /* Print number of metadata/data device pairs */ |
1890 | EMIT_PARAMS(pos, " %u", seg->area_count/2); | |
1891 | ||
1892 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) | |
1893 | return_0; | |
1894 | ||
1895 | return 1; | |
1896 | } | |
1897 | ||
8f26e18c JEB |
1898 | static int _emit_segment_line(struct dm_task *dmt, uint32_t major, |
1899 | uint32_t minor, struct load_segment *seg, | |
1900 | uint64_t *seg_start, char *params, | |
1901 | size_t paramsize) | |
1902 | { | |
1903 | int pos = 0; | |
1904 | int r; | |
cac52ca4 | 1905 | int target_type_is_raid = 0; |
8f26e18c | 1906 | char originbuf[DM_FORMAT_DEV_BUFSIZE], cowbuf[DM_FORMAT_DEV_BUFSIZE]; |
4251236e | 1907 | char pool[DM_FORMAT_DEV_BUFSIZE], metadata[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 1908 | |
8f26e18c JEB |
1909 | switch(seg->type) { |
1910 | case SEG_ERROR: | |
1911 | case SEG_ZERO: | |
1912 | case SEG_LINEAR: | |
1913 | break; | |
1914 | case SEG_MIRRORED: | |
1915 | /* Mirrors are pretty complicated - now in separate function */ | |
beecb1e1 | 1916 | r = _mirror_emit_segment_line(dmt, seg, params, paramsize); |
3c74075f JEB |
1917 | if (!r) |
1918 | return_0; | |
165e4a11 | 1919 | break; |
b262f3e1 ZK |
1920 | case SEG_REPLICATOR: |
1921 | if ((r = _replicator_emit_segment_line(seg, params, paramsize, | |
1922 | &pos)) <= 0) { | |
1923 | stack; | |
1924 | return r; | |
1925 | } | |
1926 | break; | |
1927 | case SEG_REPLICATOR_DEV: | |
1928 | if (!seg->replicator || !_build_dev_string(originbuf, | |
1929 | sizeof(originbuf), | |
1930 | seg->replicator)) | |
1931 | return_0; | |
1932 | ||
1933 | EMIT_PARAMS(pos, "%s %" PRIu64, originbuf, seg->rdevice_index); | |
1934 | break; | |
165e4a11 | 1935 | case SEG_SNAPSHOT: |
aa6f4e51 | 1936 | case SEG_SNAPSHOT_MERGE: |
b4f1578f AK |
1937 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
1938 | return_0; | |
1939 | if (!_build_dev_string(cowbuf, sizeof(cowbuf), seg->cow)) | |
1940 | return_0; | |
ffa9b6a5 ZK |
1941 | EMIT_PARAMS(pos, "%s %s %c %d", originbuf, cowbuf, |
1942 | seg->persistent ? 'P' : 'N', seg->chunk_size); | |
165e4a11 AK |
1943 | break; |
1944 | case SEG_SNAPSHOT_ORIGIN: | |
b4f1578f AK |
1945 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
1946 | return_0; | |
ffa9b6a5 | 1947 | EMIT_PARAMS(pos, "%s", originbuf); |
165e4a11 AK |
1948 | break; |
1949 | case SEG_STRIPED: | |
609faae9 | 1950 | EMIT_PARAMS(pos, "%u %u ", seg->area_count, seg->stripe_size); |
165e4a11 | 1951 | break; |
12ca060e | 1952 | case SEG_CRYPT: |
609faae9 | 1953 | EMIT_PARAMS(pos, "%s%s%s%s%s %s %" PRIu64 " ", seg->cipher, |
12ca060e MB |
1954 | seg->chainmode ? "-" : "", seg->chainmode ?: "", |
1955 | seg->iv ? "-" : "", seg->iv ?: "", seg->key, | |
1956 | seg->iv_offset != DM_CRYPT_IV_DEFAULT ? | |
1957 | seg->iv_offset : *seg_start); | |
1958 | break; | |
cac52ca4 JEB |
1959 | case SEG_RAID1: |
1960 | case SEG_RAID4: | |
1961 | case SEG_RAID5_LA: | |
1962 | case SEG_RAID5_RA: | |
1963 | case SEG_RAID5_LS: | |
1964 | case SEG_RAID5_RS: | |
1965 | case SEG_RAID6_ZR: | |
1966 | case SEG_RAID6_NR: | |
1967 | case SEG_RAID6_NC: | |
1968 | target_type_is_raid = 1; | |
1969 | r = _raid_emit_segment_line(dmt, major, minor, seg, seg_start, | |
1970 | params, paramsize); | |
1971 | if (!r) | |
1972 | return_0; | |
1973 | ||
1974 | break; | |
4251236e ZK |
1975 | case SEG_THIN_POOL: |
1976 | if (!_build_dev_string(metadata, sizeof(metadata), seg->metadata)) | |
1977 | return_0; | |
1978 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
1979 | return_0; | |
1980 | EMIT_PARAMS(pos, "%s %s %d %" PRIu64 " %s", metadata, pool, | |
460c5991 ZK |
1981 | seg->data_block_size, seg->low_water_mark_size, |
1982 | seg->skip_block_zeroing ? "1 skip_block_zeroing" : ""); | |
4251236e ZK |
1983 | break; |
1984 | case SEG_THIN: | |
1985 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
1986 | return_0; | |
1987 | EMIT_PARAMS(pos, "%s %d", pool, seg->device_id); | |
1988 | break; | |
165e4a11 AK |
1989 | } |
1990 | ||
1991 | switch(seg->type) { | |
1992 | case SEG_ERROR: | |
b262f3e1 | 1993 | case SEG_REPLICATOR: |
165e4a11 AK |
1994 | case SEG_SNAPSHOT: |
1995 | case SEG_SNAPSHOT_ORIGIN: | |
aa6f4e51 | 1996 | case SEG_SNAPSHOT_MERGE: |
165e4a11 | 1997 | case SEG_ZERO: |
4251236e ZK |
1998 | case SEG_THIN_POOL: |
1999 | case SEG_THIN: | |
165e4a11 | 2000 | break; |
12ca060e | 2001 | case SEG_CRYPT: |
165e4a11 | 2002 | case SEG_LINEAR: |
b262f3e1 | 2003 | case SEG_REPLICATOR_DEV: |
165e4a11 AK |
2004 | case SEG_STRIPED: |
2005 | if ((r = _emit_areas_line(dmt, seg, params, paramsize, &pos)) <= 0) { | |
2006 | stack; | |
2007 | return r; | |
2008 | } | |
b6793963 AK |
2009 | if (!params[0]) { |
2010 | log_error("No parameters supplied for %s target " | |
2011 | "%u:%u.", dm_segtypes[seg->type].target, | |
812e10ac | 2012 | major, minor); |
b6793963 AK |
2013 | return 0; |
2014 | } | |
165e4a11 AK |
2015 | break; |
2016 | } | |
2017 | ||
4b2cae46 AK |
2018 | log_debug("Adding target to (%" PRIu32 ":%" PRIu32 "): %" PRIu64 |
2019 | " %" PRIu64 " %s %s", major, minor, | |
f439e65b JEB |
2020 | *seg_start, seg->size, target_type_is_raid ? "raid" : |
2021 | dm_segtypes[seg->type].target, params); | |
165e4a11 | 2022 | |
cac52ca4 JEB |
2023 | if (!dm_task_add_target(dmt, *seg_start, seg->size, |
2024 | target_type_is_raid ? "raid" : | |
2025 | dm_segtypes[seg->type].target, params)) | |
b4f1578f | 2026 | return_0; |
165e4a11 AK |
2027 | |
2028 | *seg_start += seg->size; | |
2029 | ||
2030 | return 1; | |
2031 | } | |
2032 | ||
ffa9b6a5 ZK |
2033 | #undef EMIT_PARAMS |
2034 | ||
4b2cae46 AK |
2035 | static int _emit_segment(struct dm_task *dmt, uint32_t major, uint32_t minor, |
2036 | struct load_segment *seg, uint64_t *seg_start) | |
165e4a11 AK |
2037 | { |
2038 | char *params; | |
2039 | size_t paramsize = 4096; | |
2040 | int ret; | |
2041 | ||
2042 | do { | |
2043 | if (!(params = dm_malloc(paramsize))) { | |
2044 | log_error("Insufficient space for target parameters."); | |
2045 | return 0; | |
2046 | } | |
2047 | ||
12ea7cb1 | 2048 | params[0] = '\0'; |
4b2cae46 AK |
2049 | ret = _emit_segment_line(dmt, major, minor, seg, seg_start, |
2050 | params, paramsize); | |
165e4a11 AK |
2051 | dm_free(params); |
2052 | ||
2053 | if (!ret) | |
2054 | stack; | |
2055 | ||
2056 | if (ret >= 0) | |
2057 | return ret; | |
2058 | ||
2059 | log_debug("Insufficient space in params[%" PRIsize_t | |
2060 | "] for target parameters.", paramsize); | |
2061 | ||
2062 | paramsize *= 2; | |
2063 | } while (paramsize < MAX_TARGET_PARAMSIZE); | |
2064 | ||
2065 | log_error("Target parameter size too big. Aborting."); | |
2066 | return 0; | |
2067 | } | |
2068 | ||
b4f1578f | 2069 | static int _load_node(struct dm_tree_node *dnode) |
165e4a11 AK |
2070 | { |
2071 | int r = 0; | |
2072 | struct dm_task *dmt; | |
2073 | struct load_segment *seg; | |
df390f17 | 2074 | uint64_t seg_start = 0, existing_table_size; |
165e4a11 | 2075 | |
4b2cae46 AK |
2076 | log_verbose("Loading %s table (%" PRIu32 ":%" PRIu32 ")", dnode->name, |
2077 | dnode->info.major, dnode->info.minor); | |
165e4a11 AK |
2078 | |
2079 | if (!(dmt = dm_task_create(DM_DEVICE_RELOAD))) { | |
2080 | log_error("Reload dm_task creation failed for %s", dnode->name); | |
2081 | return 0; | |
2082 | } | |
2083 | ||
2084 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
2085 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
2086 | log_error("Failed to set device number for %s reload.", dnode->name); | |
2087 | goto out; | |
2088 | } | |
2089 | ||
2090 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
2091 | log_error("Failed to set read only flag for %s", dnode->name); | |
2092 | goto out; | |
2093 | } | |
2094 | ||
2095 | if (!dm_task_no_open_count(dmt)) | |
2096 | log_error("Failed to disable open_count"); | |
2097 | ||
2c44337b | 2098 | dm_list_iterate_items(seg, &dnode->props.segs) |
4b2cae46 AK |
2099 | if (!_emit_segment(dmt, dnode->info.major, dnode->info.minor, |
2100 | seg, &seg_start)) | |
b4f1578f | 2101 | goto_out; |
165e4a11 | 2102 | |
ec289b64 AK |
2103 | if (!dm_task_suppress_identical_reload(dmt)) |
2104 | log_error("Failed to suppress reload of identical tables."); | |
2105 | ||
2106 | if ((r = dm_task_run(dmt))) { | |
165e4a11 | 2107 | r = dm_task_get_info(dmt, &dnode->info); |
ec289b64 AK |
2108 | if (r && !dnode->info.inactive_table) |
2109 | log_verbose("Suppressed %s identical table reload.", | |
2110 | dnode->name); | |
bb875bb9 | 2111 | |
df390f17 | 2112 | existing_table_size = dm_task_get_existing_table_size(dmt); |
bb875bb9 | 2113 | if ((dnode->props.size_changed = |
df390f17 | 2114 | (existing_table_size == seg_start) ? 0 : 1)) { |
bb875bb9 | 2115 | log_debug("Table size changed from %" PRIu64 " to %" |
df390f17 | 2116 | PRIu64 " for %s", existing_table_size, |
bb875bb9 | 2117 | seg_start, dnode->name); |
df390f17 AK |
2118 | /* |
2119 | * Kernel usually skips size validation on zero-length devices | |
2120 | * now so no need to preload them. | |
2121 | */ | |
2122 | /* FIXME In which kernel version did this begin? */ | |
2123 | if (!existing_table_size && dnode->props.delay_resume_if_new) | |
2124 | dnode->props.size_changed = 0; | |
2125 | } | |
ec289b64 | 2126 | } |
165e4a11 AK |
2127 | |
2128 | dnode->props.segment_count = 0; | |
2129 | ||
2130 | out: | |
2131 | dm_task_destroy(dmt); | |
2132 | ||
2133 | return r; | |
165e4a11 AK |
2134 | } |
2135 | ||
b4f1578f | 2136 | int dm_tree_preload_children(struct dm_tree_node *dnode, |
bb875bb9 AK |
2137 | const char *uuid_prefix, |
2138 | size_t uuid_prefix_len) | |
165e4a11 | 2139 | { |
2ca6b865 | 2140 | int r = 1; |
165e4a11 | 2141 | void *handle = NULL; |
b4f1578f | 2142 | struct dm_tree_node *child; |
165e4a11 | 2143 | struct dm_info newinfo; |
566515c0 | 2144 | int update_devs_flag = 0; |
165e4a11 AK |
2145 | |
2146 | /* Preload children first */ | |
b4f1578f | 2147 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
165e4a11 AK |
2148 | /* Skip existing non-device-mapper devices */ |
2149 | if (!child->info.exists && child->info.major) | |
2150 | continue; | |
2151 | ||
2152 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 AK |
2153 | if (child->info.exists && |
2154 | !_uuid_prefix_matches(child->uuid, uuid_prefix, uuid_prefix_len)) | |
165e4a11 AK |
2155 | continue; |
2156 | ||
b4f1578f | 2157 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
2158 | if (!dm_tree_preload_children(child, uuid_prefix, uuid_prefix_len)) |
2159 | return_0; | |
165e4a11 | 2160 | |
165e4a11 AK |
2161 | /* FIXME Cope if name exists with no uuid? */ |
2162 | if (!child->info.exists) { | |
2163 | if (!_create_node(child)) { | |
2164 | stack; | |
2165 | return 0; | |
2166 | } | |
2167 | } | |
2168 | ||
2169 | if (!child->info.inactive_table && child->props.segment_count) { | |
2170 | if (!_load_node(child)) { | |
2171 | stack; | |
2172 | return 0; | |
2173 | } | |
2174 | } | |
2175 | ||
eb91c4ee MB |
2176 | /* Propagate device size change change */ |
2177 | if (child->props.size_changed) | |
2178 | dnode->props.size_changed = 1; | |
2179 | ||
bb875bb9 | 2180 | /* Resume device immediately if it has parents and its size changed */ |
3776c494 | 2181 | if (!dm_tree_node_num_children(child, 1) || !child->props.size_changed) |
165e4a11 AK |
2182 | continue; |
2183 | ||
7707ea90 AK |
2184 | if (!child->info.inactive_table && !child->info.suspended) |
2185 | continue; | |
2186 | ||
fc795d87 | 2187 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 2188 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 AK |
2189 | &newinfo, &child->dtree->cookie, child->udev_flags, |
2190 | child->info.suspended)) { | |
165e4a11 | 2191 | log_error("Unable to resume %s (%" PRIu32 |
fc795d87 | 2192 | ":%" PRIu32 ")", child->name, child->info.major, |
165e4a11 | 2193 | child->info.minor); |
2ca6b865 | 2194 | r = 0; |
165e4a11 AK |
2195 | continue; |
2196 | } | |
2197 | ||
2198 | /* Update cached info */ | |
2199 | child->info = newinfo; | |
566515c0 PR |
2200 | |
2201 | /* | |
2202 | * Prepare for immediate synchronization with udev and flush all stacked | |
2203 | * dev node operations if requested by immediate_dev_node property. But | |
2204 | * finish processing current level in the tree first. | |
2205 | */ | |
2206 | if (child->props.immediate_dev_node) | |
2207 | update_devs_flag = 1; | |
2208 | ||
e0ea24be ZK |
2209 | /* FIXME: trial version - to avoid use of unsynchronized thin_pool transaction_id */ |
2210 | if (child->props.thin_pool_transaction_id && | |
2211 | !_check_thin_pool_transaction_id(child->name, child->info.major, | |
2212 | child->info.minor, | |
2213 | child->props.thin_pool_transaction_id)) { | |
2214 | stack; | |
2215 | if (!(dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len))) | |
2216 | log_error("Failed to deactivate %s", child->name); | |
2217 | r = 0; | |
2218 | continue; | |
2219 | } | |
165e4a11 AK |
2220 | } |
2221 | ||
2222 | handle = NULL; | |
2223 | ||
566515c0 PR |
2224 | if (update_devs_flag) { |
2225 | if (!dm_udev_wait(dm_tree_get_cookie(dnode))) | |
2226 | stack; | |
2227 | dm_tree_set_cookie(dnode, 0); | |
566515c0 PR |
2228 | } |
2229 | ||
2ca6b865 | 2230 | return r; |
165e4a11 AK |
2231 | } |
2232 | ||
165e4a11 AK |
2233 | /* |
2234 | * Returns 1 if unsure. | |
2235 | */ | |
b4f1578f | 2236 | int dm_tree_children_use_uuid(struct dm_tree_node *dnode, |
165e4a11 AK |
2237 | const char *uuid_prefix, |
2238 | size_t uuid_prefix_len) | |
2239 | { | |
2240 | void *handle = NULL; | |
b4f1578f | 2241 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
2242 | const char *uuid; |
2243 | ||
b4f1578f AK |
2244 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
2245 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
2246 | log_error("Failed to get uuid for dtree node."); | |
165e4a11 AK |
2247 | return 1; |
2248 | } | |
2249 | ||
87f98002 | 2250 | if (_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
165e4a11 AK |
2251 | return 1; |
2252 | ||
b4f1578f AK |
2253 | if (dm_tree_node_num_children(child, 0)) |
2254 | dm_tree_children_use_uuid(child, uuid_prefix, uuid_prefix_len); | |
165e4a11 AK |
2255 | } |
2256 | ||
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | /* | |
2261 | * Target functions | |
2262 | */ | |
b4f1578f | 2263 | static struct load_segment *_add_segment(struct dm_tree_node *dnode, unsigned type, uint64_t size) |
165e4a11 AK |
2264 | { |
2265 | struct load_segment *seg; | |
2266 | ||
b4f1578f AK |
2267 | if (!(seg = dm_pool_zalloc(dnode->dtree->mem, sizeof(*seg)))) { |
2268 | log_error("dtree node segment allocation failed"); | |
165e4a11 AK |
2269 | return NULL; |
2270 | } | |
2271 | ||
2272 | seg->type = type; | |
2273 | seg->size = size; | |
2274 | seg->area_count = 0; | |
2c44337b | 2275 | dm_list_init(&seg->areas); |
165e4a11 AK |
2276 | seg->stripe_size = 0; |
2277 | seg->persistent = 0; | |
2278 | seg->chunk_size = 0; | |
2279 | seg->cow = NULL; | |
2280 | seg->origin = NULL; | |
aa6f4e51 | 2281 | seg->merge = NULL; |
165e4a11 | 2282 | |
2c44337b | 2283 | dm_list_add(&dnode->props.segs, &seg->list); |
165e4a11 AK |
2284 | dnode->props.segment_count++; |
2285 | ||
2286 | return seg; | |
2287 | } | |
2288 | ||
b4f1578f | 2289 | int dm_tree_node_add_snapshot_origin_target(struct dm_tree_node *dnode, |
40e5fd8b AK |
2290 | uint64_t size, |
2291 | const char *origin_uuid) | |
165e4a11 AK |
2292 | { |
2293 | struct load_segment *seg; | |
b4f1578f | 2294 | struct dm_tree_node *origin_node; |
165e4a11 | 2295 | |
b4f1578f AK |
2296 | if (!(seg = _add_segment(dnode, SEG_SNAPSHOT_ORIGIN, size))) |
2297 | return_0; | |
165e4a11 | 2298 | |
b4f1578f | 2299 | if (!(origin_node = dm_tree_find_node_by_uuid(dnode->dtree, origin_uuid))) { |
165e4a11 AK |
2300 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2301 | return 0; | |
2302 | } | |
2303 | ||
2304 | seg->origin = origin_node; | |
b4f1578f AK |
2305 | if (!_link_tree_nodes(dnode, origin_node)) |
2306 | return_0; | |
165e4a11 | 2307 | |
56c28292 AK |
2308 | /* Resume snapshot origins after new snapshots */ |
2309 | dnode->activation_priority = 1; | |
2310 | ||
165e4a11 AK |
2311 | return 1; |
2312 | } | |
2313 | ||
aa6f4e51 MS |
2314 | static int _add_snapshot_target(struct dm_tree_node *node, |
2315 | uint64_t size, | |
2316 | const char *origin_uuid, | |
2317 | const char *cow_uuid, | |
2318 | const char *merge_uuid, | |
2319 | int persistent, | |
2320 | uint32_t chunk_size) | |
165e4a11 AK |
2321 | { |
2322 | struct load_segment *seg; | |
aa6f4e51 MS |
2323 | struct dm_tree_node *origin_node, *cow_node, *merge_node; |
2324 | unsigned seg_type; | |
2325 | ||
2326 | seg_type = !merge_uuid ? SEG_SNAPSHOT : SEG_SNAPSHOT_MERGE; | |
165e4a11 | 2327 | |
aa6f4e51 | 2328 | if (!(seg = _add_segment(node, seg_type, size))) |
b4f1578f | 2329 | return_0; |
165e4a11 | 2330 | |
b4f1578f | 2331 | if (!(origin_node = dm_tree_find_node_by_uuid(node->dtree, origin_uuid))) { |
165e4a11 AK |
2332 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2333 | return 0; | |
2334 | } | |
2335 | ||
2336 | seg->origin = origin_node; | |
b4f1578f AK |
2337 | if (!_link_tree_nodes(node, origin_node)) |
2338 | return_0; | |
165e4a11 | 2339 | |
b4f1578f | 2340 | if (!(cow_node = dm_tree_find_node_by_uuid(node->dtree, cow_uuid))) { |
aa6f4e51 | 2341 | log_error("Couldn't find snapshot COW device uuid %s.", cow_uuid); |
165e4a11 AK |
2342 | return 0; |
2343 | } | |
2344 | ||
2345 | seg->cow = cow_node; | |
b4f1578f AK |
2346 | if (!_link_tree_nodes(node, cow_node)) |
2347 | return_0; | |
165e4a11 AK |
2348 | |
2349 | seg->persistent = persistent ? 1 : 0; | |
2350 | seg->chunk_size = chunk_size; | |
2351 | ||
aa6f4e51 MS |
2352 | if (merge_uuid) { |
2353 | if (!(merge_node = dm_tree_find_node_by_uuid(node->dtree, merge_uuid))) { | |
2354 | /* not a pure error, merging snapshot may have been deactivated */ | |
2355 | log_verbose("Couldn't find merging snapshot uuid %s.", merge_uuid); | |
2356 | } else { | |
2357 | seg->merge = merge_node; | |
2358 | /* must not link merging snapshot, would undermine activation_priority below */ | |
2359 | } | |
2360 | ||
2361 | /* Resume snapshot-merge (acting origin) after other snapshots */ | |
2362 | node->activation_priority = 1; | |
2363 | if (seg->merge) { | |
2364 | /* Resume merging snapshot after snapshot-merge */ | |
2365 | seg->merge->activation_priority = 2; | |
2366 | } | |
2367 | } | |
2368 | ||
165e4a11 AK |
2369 | return 1; |
2370 | } | |
2371 | ||
aa6f4e51 MS |
2372 | |
2373 | int dm_tree_node_add_snapshot_target(struct dm_tree_node *node, | |
2374 | uint64_t size, | |
2375 | const char *origin_uuid, | |
2376 | const char *cow_uuid, | |
2377 | int persistent, | |
2378 | uint32_t chunk_size) | |
2379 | { | |
2380 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2381 | NULL, persistent, chunk_size); | |
2382 | } | |
2383 | ||
2384 | int dm_tree_node_add_snapshot_merge_target(struct dm_tree_node *node, | |
2385 | uint64_t size, | |
2386 | const char *origin_uuid, | |
2387 | const char *cow_uuid, | |
2388 | const char *merge_uuid, | |
2389 | uint32_t chunk_size) | |
2390 | { | |
2391 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2392 | merge_uuid, 1, chunk_size); | |
2393 | } | |
2394 | ||
b4f1578f | 2395 | int dm_tree_node_add_error_target(struct dm_tree_node *node, |
40e5fd8b | 2396 | uint64_t size) |
165e4a11 | 2397 | { |
b4f1578f AK |
2398 | if (!_add_segment(node, SEG_ERROR, size)) |
2399 | return_0; | |
165e4a11 AK |
2400 | |
2401 | return 1; | |
2402 | } | |
2403 | ||
b4f1578f | 2404 | int dm_tree_node_add_zero_target(struct dm_tree_node *node, |
40e5fd8b | 2405 | uint64_t size) |
165e4a11 | 2406 | { |
b4f1578f AK |
2407 | if (!_add_segment(node, SEG_ZERO, size)) |
2408 | return_0; | |
165e4a11 AK |
2409 | |
2410 | return 1; | |
2411 | } | |
2412 | ||
b4f1578f | 2413 | int dm_tree_node_add_linear_target(struct dm_tree_node *node, |
40e5fd8b | 2414 | uint64_t size) |
165e4a11 | 2415 | { |
b4f1578f AK |
2416 | if (!_add_segment(node, SEG_LINEAR, size)) |
2417 | return_0; | |
165e4a11 AK |
2418 | |
2419 | return 1; | |
2420 | } | |
2421 | ||
b4f1578f | 2422 | int dm_tree_node_add_striped_target(struct dm_tree_node *node, |
40e5fd8b AK |
2423 | uint64_t size, |
2424 | uint32_t stripe_size) | |
165e4a11 AK |
2425 | { |
2426 | struct load_segment *seg; | |
2427 | ||
b4f1578f AK |
2428 | if (!(seg = _add_segment(node, SEG_STRIPED, size))) |
2429 | return_0; | |
165e4a11 AK |
2430 | |
2431 | seg->stripe_size = stripe_size; | |
2432 | ||
2433 | return 1; | |
2434 | } | |
2435 | ||
12ca060e MB |
2436 | int dm_tree_node_add_crypt_target(struct dm_tree_node *node, |
2437 | uint64_t size, | |
2438 | const char *cipher, | |
2439 | const char *chainmode, | |
2440 | const char *iv, | |
2441 | uint64_t iv_offset, | |
2442 | const char *key) | |
2443 | { | |
2444 | struct load_segment *seg; | |
2445 | ||
2446 | if (!(seg = _add_segment(node, SEG_CRYPT, size))) | |
2447 | return_0; | |
2448 | ||
2449 | seg->cipher = cipher; | |
2450 | seg->chainmode = chainmode; | |
2451 | seg->iv = iv; | |
2452 | seg->iv_offset = iv_offset; | |
2453 | seg->key = key; | |
2454 | ||
2455 | return 1; | |
2456 | } | |
2457 | ||
b4f1578f | 2458 | int dm_tree_node_add_mirror_target_log(struct dm_tree_node *node, |
165e4a11 | 2459 | uint32_t region_size, |
08e64ce5 | 2460 | unsigned clustered, |
165e4a11 | 2461 | const char *log_uuid, |
ce7ed2c0 AK |
2462 | unsigned area_count, |
2463 | uint32_t flags) | |
165e4a11 | 2464 | { |
908db078 | 2465 | struct dm_tree_node *log_node = NULL; |
165e4a11 AK |
2466 | struct load_segment *seg; |
2467 | ||
2468 | if (!node->props.segment_count) { | |
b8175c33 | 2469 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
2470 | return 0; |
2471 | } | |
2472 | ||
2c44337b | 2473 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 2474 | |
24b026e3 | 2475 | if (log_uuid) { |
67b25ed4 AK |
2476 | if (!(seg->uuid = dm_pool_strdup(node->dtree->mem, log_uuid))) { |
2477 | log_error("log uuid pool_strdup failed"); | |
2478 | return 0; | |
2479 | } | |
df390f17 AK |
2480 | if ((flags & DM_CORELOG)) |
2481 | /* For pvmove: immediate resume (for size validation) isn't needed. */ | |
2482 | node->props.delay_resume_if_new = 1; | |
2483 | else { | |
9723090c AK |
2484 | if (!(log_node = dm_tree_find_node_by_uuid(node->dtree, log_uuid))) { |
2485 | log_error("Couldn't find mirror log uuid %s.", log_uuid); | |
2486 | return 0; | |
2487 | } | |
2488 | ||
566515c0 PR |
2489 | if (clustered) |
2490 | log_node->props.immediate_dev_node = 1; | |
2491 | ||
0a99713e AK |
2492 | /* The kernel validates the size of disk logs. */ |
2493 | /* FIXME Propagate to any devices below */ | |
2494 | log_node->props.delay_resume_if_new = 0; | |
2495 | ||
9723090c AK |
2496 | if (!_link_tree_nodes(node, log_node)) |
2497 | return_0; | |
2498 | } | |
165e4a11 AK |
2499 | } |
2500 | ||
2501 | seg->log = log_node; | |
165e4a11 AK |
2502 | seg->region_size = region_size; |
2503 | seg->clustered = clustered; | |
2504 | seg->mirror_area_count = area_count; | |
dbcb64b8 | 2505 | seg->flags = flags; |
165e4a11 AK |
2506 | |
2507 | return 1; | |
2508 | } | |
2509 | ||
b4f1578f | 2510 | int dm_tree_node_add_mirror_target(struct dm_tree_node *node, |
40e5fd8b | 2511 | uint64_t size) |
165e4a11 | 2512 | { |
cbecd3cd | 2513 | if (!_add_segment(node, SEG_MIRRORED, size)) |
b4f1578f | 2514 | return_0; |
165e4a11 AK |
2515 | |
2516 | return 1; | |
2517 | } | |
2518 | ||
cac52ca4 JEB |
2519 | int dm_tree_node_add_raid_target(struct dm_tree_node *node, |
2520 | uint64_t size, | |
2521 | const char *raid_type, | |
2522 | uint32_t region_size, | |
2523 | uint32_t stripe_size, | |
f439e65b | 2524 | uint64_t rebuilds, |
cac52ca4 JEB |
2525 | uint64_t reserved2) |
2526 | { | |
2527 | int i; | |
2528 | struct load_segment *seg = NULL; | |
2529 | ||
2530 | for (i = 0; dm_segtypes[i].target && !seg; i++) | |
2531 | if (!strcmp(raid_type, dm_segtypes[i].target)) | |
2532 | if (!(seg = _add_segment(node, | |
2533 | dm_segtypes[i].type, size))) | |
2534 | return_0; | |
2535 | ||
b2fa9b43 JEB |
2536 | if (!seg) |
2537 | return_0; | |
2538 | ||
cac52ca4 JEB |
2539 | seg->region_size = region_size; |
2540 | seg->stripe_size = stripe_size; | |
2541 | seg->area_count = 0; | |
f439e65b | 2542 | seg->rebuilds = rebuilds; |
cac52ca4 JEB |
2543 | |
2544 | return 1; | |
2545 | } | |
2546 | ||
b262f3e1 ZK |
2547 | int dm_tree_node_add_replicator_target(struct dm_tree_node *node, |
2548 | uint64_t size, | |
2549 | const char *rlog_uuid, | |
2550 | const char *rlog_type, | |
2551 | unsigned rsite_index, | |
2552 | dm_replicator_mode_t mode, | |
2553 | uint32_t async_timeout, | |
2554 | uint64_t fall_behind_data, | |
2555 | uint32_t fall_behind_ios) | |
2556 | { | |
2557 | struct load_segment *rseg; | |
2558 | struct replicator_site *rsite; | |
2559 | ||
2560 | /* Local site0 - adds replicator segment and links rlog device */ | |
2561 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2562 | if (node->props.segment_count) { | |
2563 | log_error(INTERNAL_ERROR "Attempt to add replicator segment to already used node."); | |
2564 | return 0; | |
2565 | } | |
2566 | ||
2567 | if (!(rseg = _add_segment(node, SEG_REPLICATOR, size))) | |
2568 | return_0; | |
2569 | ||
2570 | if (!(rseg->log = dm_tree_find_node_by_uuid(node->dtree, rlog_uuid))) { | |
2571 | log_error("Missing replicator log uuid %s.", rlog_uuid); | |
2572 | return 0; | |
2573 | } | |
2574 | ||
2575 | if (!_link_tree_nodes(node, rseg->log)) | |
2576 | return_0; | |
2577 | ||
2578 | if (strcmp(rlog_type, "ringbuffer") != 0) { | |
2579 | log_error("Unsupported replicator log type %s.", rlog_type); | |
2580 | return 0; | |
2581 | } | |
2582 | ||
2583 | if (!(rseg->rlog_type = dm_pool_strdup(node->dtree->mem, rlog_type))) | |
2584 | return_0; | |
2585 | ||
2586 | dm_list_init(&rseg->rsites); | |
2587 | rseg->rdevice_count = 0; | |
2588 | node->activation_priority = 1; | |
2589 | } | |
2590 | ||
2591 | /* Add site to segment */ | |
2592 | if (mode == DM_REPLICATOR_SYNC | |
2593 | && (async_timeout || fall_behind_ios || fall_behind_data)) { | |
2594 | log_error("Async parameters passed for synchronnous replicator."); | |
2595 | return 0; | |
2596 | } | |
2597 | ||
2598 | if (node->props.segment_count != 1) { | |
2599 | log_error(INTERNAL_ERROR "Attempt to add remote site area before setting replicator log."); | |
2600 | return 0; | |
2601 | } | |
2602 | ||
2603 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2604 | if (rseg->type != SEG_REPLICATOR) { | |
2605 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2606 | dm_segtypes[rseg->type].target); | |
2607 | return 0; | |
2608 | } | |
2609 | ||
2610 | if (!(rsite = dm_pool_zalloc(node->dtree->mem, sizeof(*rsite)))) { | |
2611 | log_error("Failed to allocate remote site segment."); | |
2612 | return 0; | |
2613 | } | |
2614 | ||
2615 | dm_list_add(&rseg->rsites, &rsite->list); | |
2616 | rseg->rsite_count++; | |
2617 | ||
2618 | rsite->mode = mode; | |
2619 | rsite->async_timeout = async_timeout; | |
2620 | rsite->fall_behind_data = fall_behind_data; | |
2621 | rsite->fall_behind_ios = fall_behind_ios; | |
2622 | rsite->rsite_index = rsite_index; | |
2623 | ||
2624 | return 1; | |
2625 | } | |
2626 | ||
2627 | /* Appends device node to Replicator */ | |
2628 | int dm_tree_node_add_replicator_dev_target(struct dm_tree_node *node, | |
2629 | uint64_t size, | |
2630 | const char *replicator_uuid, | |
2631 | uint64_t rdevice_index, | |
2632 | const char *rdev_uuid, | |
2633 | unsigned rsite_index, | |
2634 | const char *slog_uuid, | |
2635 | uint32_t slog_flags, | |
2636 | uint32_t slog_region_size) | |
2637 | { | |
2638 | struct seg_area *area; | |
2639 | struct load_segment *rseg; | |
2640 | struct load_segment *rep_seg; | |
2641 | ||
2642 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2643 | /* Site index for local target */ | |
2644 | if (!(rseg = _add_segment(node, SEG_REPLICATOR_DEV, size))) | |
2645 | return_0; | |
2646 | ||
2647 | if (!(rseg->replicator = dm_tree_find_node_by_uuid(node->dtree, replicator_uuid))) { | |
2648 | log_error("Missing replicator uuid %s.", replicator_uuid); | |
2649 | return 0; | |
2650 | } | |
2651 | ||
2652 | /* Local slink0 for replicator must be always initialized first */ | |
2653 | if (rseg->replicator->props.segment_count != 1) { | |
2654 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment."); | |
2655 | return 0; | |
2656 | } | |
2657 | ||
2658 | rep_seg = dm_list_item(dm_list_last(&rseg->replicator->props.segs), struct load_segment); | |
2659 | if (rep_seg->type != SEG_REPLICATOR) { | |
2660 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2661 | dm_segtypes[rep_seg->type].target); | |
2662 | return 0; | |
2663 | } | |
2664 | rep_seg->rdevice_count++; | |
2665 | ||
2666 | if (!_link_tree_nodes(node, rseg->replicator)) | |
2667 | return_0; | |
2668 | ||
2669 | rseg->rdevice_index = rdevice_index; | |
2670 | } else { | |
2671 | /* Local slink0 for replicator must be always initialized first */ | |
2672 | if (node->props.segment_count != 1) { | |
2673 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment."); | |
2674 | return 0; | |
2675 | } | |
2676 | ||
2677 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2678 | if (rseg->type != SEG_REPLICATOR_DEV) { | |
2679 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment %s.", | |
2680 | dm_segtypes[rseg->type].target); | |
2681 | return 0; | |
2682 | } | |
2683 | } | |
2684 | ||
2685 | if (!(slog_flags & DM_CORELOG) && !slog_uuid) { | |
2686 | log_error("Unspecified sync log uuid."); | |
2687 | return 0; | |
2688 | } | |
2689 | ||
2690 | if (!dm_tree_node_add_target_area(node, NULL, rdev_uuid, 0)) | |
2691 | return_0; | |
2692 | ||
2693 | area = dm_list_item(dm_list_last(&rseg->areas), struct seg_area); | |
2694 | ||
2695 | if (!(slog_flags & DM_CORELOG)) { | |
2696 | if (!(area->slog = dm_tree_find_node_by_uuid(node->dtree, slog_uuid))) { | |
2697 | log_error("Couldn't find sync log uuid %s.", slog_uuid); | |
2698 | return 0; | |
2699 | } | |
2700 | ||
2701 | if (!_link_tree_nodes(node, area->slog)) | |
2702 | return_0; | |
2703 | } | |
2704 | ||
2705 | area->flags = slog_flags; | |
2706 | area->region_size = slog_region_size; | |
2707 | area->rsite_index = rsite_index; | |
2708 | ||
2709 | return 1; | |
2710 | } | |
2711 | ||
4251236e ZK |
2712 | int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node, |
2713 | uint64_t size, | |
e0ea24be | 2714 | uint64_t transaction_id, |
4251236e ZK |
2715 | const char *pool_uuid, |
2716 | const char *metadata_uuid, | |
2717 | uint32_t data_block_size, | |
460c5991 ZK |
2718 | uint64_t low_water_mark_size, |
2719 | unsigned skip_block_zeroing) | |
4251236e ZK |
2720 | { |
2721 | struct load_segment *seg; | |
2722 | ||
2723 | if (data_block_size < THIN_MIN_DATA_SIZE) { | |
2724 | log_error("Data block size %d is lower then " | |
2725 | QUOTE(THIN_MIN_DATA_SIZE) " sectors.", | |
2726 | data_block_size); | |
2727 | return 0; | |
2728 | } | |
2729 | ||
2730 | if (data_block_size > THIN_MAX_DATA_SIZE) { | |
2731 | log_error("Data block size %d is higher then " | |
2732 | QUOTE(THIN_MAX_DATA_SIZE) " sectors.", | |
2733 | data_block_size); | |
2734 | return 0; | |
2735 | } | |
2736 | ||
2737 | if (!(seg = _add_segment(node, SEG_THIN_POOL, size))) | |
2738 | return_0; | |
2739 | ||
2740 | if (!(seg->metadata = dm_tree_find_node_by_uuid(node->dtree, metadata_uuid))) { | |
2741 | log_error("Missing metadata uuid %s.", metadata_uuid); | |
2742 | return 0; | |
2743 | } | |
2744 | ||
2745 | if (!_link_tree_nodes(node, seg->metadata)) | |
2746 | return_0; | |
2747 | ||
2748 | if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) { | |
2749 | log_error("Missing pool uuid %s.", pool_uuid); | |
2750 | return 0; | |
2751 | } | |
2752 | ||
2753 | if (!_link_tree_nodes(node, seg->pool)) | |
2754 | return_0; | |
2755 | ||
e0ea24be | 2756 | node->props.thin_pool_transaction_id = transaction_id; // compare on resume |
460c5991 | 2757 | seg->low_water_mark_size = low_water_mark_size; |
e0ea24be | 2758 | seg->data_block_size = data_block_size; |
460c5991 | 2759 | seg->skip_block_zeroing = skip_block_zeroing; |
4251236e ZK |
2760 | |
2761 | return 1; | |
2762 | } | |
2763 | ||
2764 | int dm_tree_node_add_thin_target(struct dm_tree_node *node, | |
2765 | uint64_t size, | |
4251236e ZK |
2766 | const char *thin_pool_uuid, |
2767 | uint32_t device_id) | |
2768 | { | |
2769 | struct load_segment *seg; | |
2770 | ||
2771 | if (device_id > THIN_MAX_DEVICE_ID) { | |
2772 | log_error("Device id %d is higher then " QUOTE(THIN_MAX_DEVICE_ID) ".", | |
2773 | device_id); | |
2774 | return 0; | |
2775 | } | |
2776 | ||
2777 | if (!(seg = _add_segment(node, SEG_THIN, size))) | |
2778 | return_0; | |
2779 | ||
2780 | if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, thin_pool_uuid))) { | |
2781 | log_error("Missing thin pool uuid %s.", thin_pool_uuid); | |
2782 | return 0; | |
2783 | } | |
2784 | ||
2785 | if (!_link_tree_nodes(node, seg->pool)) | |
2786 | return_0; | |
2787 | ||
1419bf1c ZK |
2788 | seg->device_id = device_id; |
2789 | ||
4251236e ZK |
2790 | return 1; |
2791 | } | |
2792 | ||
b4f1578f | 2793 | static int _add_area(struct dm_tree_node *node, struct load_segment *seg, struct dm_tree_node *dev_node, uint64_t offset) |
165e4a11 AK |
2794 | { |
2795 | struct seg_area *area; | |
2796 | ||
b4f1578f | 2797 | if (!(area = dm_pool_zalloc(node->dtree->mem, sizeof (*area)))) { |
165e4a11 AK |
2798 | log_error("Failed to allocate target segment area."); |
2799 | return 0; | |
2800 | } | |
2801 | ||
2802 | area->dev_node = dev_node; | |
2803 | area->offset = offset; | |
2804 | ||
2c44337b | 2805 | dm_list_add(&seg->areas, &area->list); |
165e4a11 AK |
2806 | seg->area_count++; |
2807 | ||
2808 | return 1; | |
2809 | } | |
2810 | ||
b4f1578f | 2811 | int dm_tree_node_add_target_area(struct dm_tree_node *node, |
40e5fd8b AK |
2812 | const char *dev_name, |
2813 | const char *uuid, | |
2814 | uint64_t offset) | |
165e4a11 AK |
2815 | { |
2816 | struct load_segment *seg; | |
2817 | struct stat info; | |
b4f1578f | 2818 | struct dm_tree_node *dev_node; |
165e4a11 AK |
2819 | |
2820 | if ((!dev_name || !*dev_name) && (!uuid || !*uuid)) { | |
b4f1578f | 2821 | log_error("dm_tree_node_add_target_area called without device"); |
165e4a11 AK |
2822 | return 0; |
2823 | } | |
2824 | ||
2825 | if (uuid) { | |
b4f1578f | 2826 | if (!(dev_node = dm_tree_find_node_by_uuid(node->dtree, uuid))) { |
165e4a11 AK |
2827 | log_error("Couldn't find area uuid %s.", uuid); |
2828 | return 0; | |
2829 | } | |
b4f1578f AK |
2830 | if (!_link_tree_nodes(node, dev_node)) |
2831 | return_0; | |
165e4a11 | 2832 | } else { |
6d04311e | 2833 | if (stat(dev_name, &info) < 0) { |
165e4a11 AK |
2834 | log_error("Device %s not found.", dev_name); |
2835 | return 0; | |
2836 | } | |
2837 | ||
40e5fd8b | 2838 | if (!S_ISBLK(info.st_mode)) { |
165e4a11 AK |
2839 | log_error("Device %s is not a block device.", dev_name); |
2840 | return 0; | |
2841 | } | |
2842 | ||
2843 | /* FIXME Check correct macro use */ | |
cda69e17 PR |
2844 | if (!(dev_node = _add_dev(node->dtree, node, MAJOR(info.st_rdev), |
2845 | MINOR(info.st_rdev), 0))) | |
b4f1578f | 2846 | return_0; |
165e4a11 AK |
2847 | } |
2848 | ||
2849 | if (!node->props.segment_count) { | |
b8175c33 | 2850 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
2851 | return 0; |
2852 | } | |
2853 | ||
2c44337b | 2854 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 2855 | |
b4f1578f AK |
2856 | if (!_add_area(node, seg, dev_node, offset)) |
2857 | return_0; | |
165e4a11 AK |
2858 | |
2859 | return 1; | |
db208f51 | 2860 | } |
bd90c6b2 | 2861 | |
6d04311e JEB |
2862 | int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset) |
2863 | { | |
2864 | struct load_segment *seg; | |
2865 | ||
2866 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2867 | ||
415c0690 AK |
2868 | switch (seg->type) { |
2869 | case SEG_RAID1: | |
2870 | case SEG_RAID4: | |
2871 | case SEG_RAID5_LA: | |
2872 | case SEG_RAID5_RA: | |
2873 | case SEG_RAID5_LS: | |
2874 | case SEG_RAID5_RS: | |
2875 | case SEG_RAID6_ZR: | |
2876 | case SEG_RAID6_NR: | |
2877 | case SEG_RAID6_NC: | |
2878 | break; | |
2879 | default: | |
2880 | log_error("dm_tree_node_add_null_area() called on an unsupported segment type"); | |
2881 | return 0; | |
2882 | } | |
2883 | ||
6d04311e JEB |
2884 | if (!_add_area(node, seg, NULL, offset)) |
2885 | return_0; | |
2886 | ||
2887 | return 1; | |
2888 | } | |
2889 | ||
bd90c6b2 AK |
2890 | void dm_tree_set_cookie(struct dm_tree_node *node, uint32_t cookie) |
2891 | { | |
2892 | node->dtree->cookie = cookie; | |
2893 | } | |
2894 | ||
2895 | uint32_t dm_tree_get_cookie(struct dm_tree_node *node) | |
2896 | { | |
2897 | return node->dtree->cookie; | |
2898 | } |