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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 | ||
165e4a11 AK |
32 | /* Supported segment types */ |
33 | enum { | |
12ca060e MB |
34 | SEG_CRYPT, |
35 | SEG_ERROR, | |
165e4a11 AK |
36 | SEG_LINEAR, |
37 | SEG_MIRRORED, | |
b262f3e1 ZK |
38 | SEG_REPLICATOR, |
39 | SEG_REPLICATOR_DEV, | |
165e4a11 AK |
40 | SEG_SNAPSHOT, |
41 | SEG_SNAPSHOT_ORIGIN, | |
aa6f4e51 | 42 | SEG_SNAPSHOT_MERGE, |
165e4a11 AK |
43 | SEG_STRIPED, |
44 | SEG_ZERO, | |
4251236e ZK |
45 | SEG_THIN_POOL, |
46 | SEG_THIN, | |
cac52ca4 JEB |
47 | SEG_RAID1, |
48 | SEG_RAID4, | |
49 | SEG_RAID5_LA, | |
50 | SEG_RAID5_RA, | |
51 | SEG_RAID5_LS, | |
52 | SEG_RAID5_RS, | |
53 | SEG_RAID6_ZR, | |
54 | SEG_RAID6_NR, | |
55 | SEG_RAID6_NC, | |
56 | SEG_LAST, | |
165e4a11 | 57 | }; |
b4f1578f | 58 | |
165e4a11 AK |
59 | /* FIXME Add crypt and multipath support */ |
60 | ||
61 | struct { | |
62 | unsigned type; | |
63 | const char *target; | |
64 | } dm_segtypes[] = { | |
12ca060e | 65 | { SEG_CRYPT, "crypt" }, |
165e4a11 AK |
66 | { SEG_ERROR, "error" }, |
67 | { SEG_LINEAR, "linear" }, | |
68 | { SEG_MIRRORED, "mirror" }, | |
b262f3e1 ZK |
69 | { SEG_REPLICATOR, "replicator" }, |
70 | { SEG_REPLICATOR_DEV, "replicator-dev" }, | |
165e4a11 AK |
71 | { SEG_SNAPSHOT, "snapshot" }, |
72 | { SEG_SNAPSHOT_ORIGIN, "snapshot-origin" }, | |
aa6f4e51 | 73 | { SEG_SNAPSHOT_MERGE, "snapshot-merge" }, |
165e4a11 AK |
74 | { SEG_STRIPED, "striped" }, |
75 | { SEG_ZERO, "zero"}, | |
4251236e ZK |
76 | { SEG_THIN_POOL, "thin-pool"}, |
77 | { SEG_THIN, "thin"}, | |
cac52ca4 JEB |
78 | { SEG_RAID1, "raid1"}, |
79 | { SEG_RAID4, "raid4"}, | |
80 | { SEG_RAID5_LA, "raid5_la"}, | |
81 | { SEG_RAID5_RA, "raid5_ra"}, | |
82 | { SEG_RAID5_LS, "raid5_ls"}, | |
83 | { SEG_RAID5_RS, "raid5_rs"}, | |
84 | { SEG_RAID6_ZR, "raid6_zr"}, | |
85 | { SEG_RAID6_NR, "raid6_nr"}, | |
86 | { SEG_RAID6_NC, "raid6_nc"}, | |
ee05be08 ZK |
87 | |
88 | /* | |
89 | *WARNING: Since 'raid' target overloads this 1:1 mapping table | |
90 | * for search do not add new enum elements past them! | |
91 | */ | |
cac52ca4 JEB |
92 | { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */ |
93 | { SEG_RAID6_ZR, "raid6"}, /* same as "raid6_zr" */ | |
94 | { SEG_LAST, NULL }, | |
165e4a11 AK |
95 | }; |
96 | ||
97 | /* Some segment types have a list of areas of other devices attached */ | |
98 | struct seg_area { | |
2c44337b | 99 | struct dm_list list; |
165e4a11 | 100 | |
b4f1578f | 101 | struct dm_tree_node *dev_node; |
165e4a11 AK |
102 | |
103 | uint64_t offset; | |
b262f3e1 ZK |
104 | |
105 | unsigned rsite_index; /* Replicator site index */ | |
106 | struct dm_tree_node *slog; /* Replicator sync log node */ | |
107 | uint64_t region_size; /* Replicator sync log size */ | |
108 | uint32_t flags; /* Replicator sync log flags */ | |
109 | }; | |
110 | ||
25e6ab87 ZK |
111 | struct thin_message { |
112 | struct dm_list list; | |
113 | struct dm_thin_message message; | |
660a42bc | 114 | int expected_errno; |
25e6ab87 ZK |
115 | }; |
116 | ||
b262f3e1 ZK |
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 */ | |
25e6ab87 | 172 | struct dm_list thin_messages; /* Thin_pool */ |
e9156c2b | 173 | uint64_t low_water_mark; /* Thin_pool */ |
e0ea24be | 174 | uint32_t data_block_size; /* Thin_pool */ |
460c5991 | 175 | unsigned skip_block_zeroing; /* Thin_pool */ |
4251236e ZK |
176 | uint32_t device_id; /* Thin */ |
177 | ||
165e4a11 AK |
178 | }; |
179 | ||
180 | /* Per-device properties */ | |
181 | struct load_properties { | |
182 | int read_only; | |
183 | uint32_t major; | |
184 | uint32_t minor; | |
185 | ||
52b84409 AK |
186 | uint32_t read_ahead; |
187 | uint32_t read_ahead_flags; | |
188 | ||
e0ea24be ZK |
189 | uint64_t thin_pool_transaction_id; /* Thin_pool */ |
190 | ||
165e4a11 | 191 | unsigned segment_count; |
bb875bb9 | 192 | unsigned size_changed; |
2c44337b | 193 | struct dm_list segs; |
165e4a11 AK |
194 | |
195 | const char *new_name; | |
566515c0 PR |
196 | |
197 | /* If immediate_dev_node is set to 1, try to create the dev node | |
198 | * as soon as possible (e.g. in preload stage even during traversal | |
199 | * and processing of dm tree). This will also flush all stacked dev | |
200 | * node operations, synchronizing with udev. | |
201 | */ | |
df390f17 AK |
202 | unsigned immediate_dev_node; |
203 | ||
204 | /* | |
205 | * If the device size changed from zero and this is set, | |
206 | * don't resume the device immediately, even if the device | |
207 | * has parents. This works provided the parents do not | |
208 | * validate the device size and is required by pvmove to | |
209 | * avoid starting the mirror resync operation too early. | |
210 | */ | |
211 | unsigned delay_resume_if_new; | |
165e4a11 AK |
212 | }; |
213 | ||
214 | /* Two of these used to join two nodes with uses and used_by. */ | |
b4f1578f | 215 | struct dm_tree_link { |
2c44337b | 216 | struct dm_list list; |
b4f1578f | 217 | struct dm_tree_node *node; |
165e4a11 AK |
218 | }; |
219 | ||
b4f1578f AK |
220 | struct dm_tree_node { |
221 | struct dm_tree *dtree; | |
3d0480ed | 222 | |
40e5fd8b AK |
223 | const char *name; |
224 | const char *uuid; | |
225 | struct dm_info info; | |
3d0480ed | 226 | |
40e5fd8b AK |
227 | struct dm_list uses; /* Nodes this node uses */ |
228 | struct dm_list used_by; /* Nodes that use this node */ | |
165e4a11 | 229 | |
56c28292 AK |
230 | int activation_priority; /* 0 gets activated first */ |
231 | ||
f16aea9e PR |
232 | uint16_t udev_flags; /* Udev control flags */ |
233 | ||
165e4a11 AK |
234 | void *context; /* External supplied context */ |
235 | ||
236 | struct load_properties props; /* For creation/table (re)load */ | |
76d1aec8 ZK |
237 | |
238 | /* | |
239 | * If presuspend of child node is needed | |
240 | * Note: only direct child is allowed | |
241 | */ | |
242 | struct dm_tree_node *presuspend_node; | |
3d0480ed AK |
243 | }; |
244 | ||
b4f1578f | 245 | struct dm_tree { |
a3f6b2ce AK |
246 | struct dm_pool *mem; |
247 | struct dm_hash_table *devs; | |
165e4a11 | 248 | struct dm_hash_table *uuids; |
b4f1578f | 249 | struct dm_tree_node root; |
c55b1410 | 250 | int skip_lockfs; /* 1 skips lockfs (for non-snapshots) */ |
787200ef PR |
251 | int no_flush; /* 1 sets noflush (mirrors/multipath) */ |
252 | int retry_remove; /* 1 retries remove if not successful */ | |
bd90c6b2 | 253 | uint32_t cookie; |
3d0480ed AK |
254 | }; |
255 | ||
b4f1578f | 256 | struct dm_tree *dm_tree_create(void) |
3d0480ed | 257 | { |
0395dd22 | 258 | struct dm_pool *dmem; |
b4f1578f | 259 | struct dm_tree *dtree; |
3d0480ed | 260 | |
0395dd22 ZK |
261 | if (!(dmem = dm_pool_create("dtree", 1024)) || |
262 | !(dtree = dm_pool_zalloc(dmem, sizeof(*dtree)))) { | |
263 | log_error("Failed to allocate dtree."); | |
264 | if (dmem) | |
265 | dm_pool_destroy(dmem); | |
3d0480ed AK |
266 | return NULL; |
267 | } | |
268 | ||
b4f1578f | 269 | dtree->root.dtree = dtree; |
2c44337b AK |
270 | dm_list_init(&dtree->root.uses); |
271 | dm_list_init(&dtree->root.used_by); | |
c55b1410 | 272 | dtree->skip_lockfs = 0; |
b9ffd32c | 273 | dtree->no_flush = 0; |
0395dd22 | 274 | dtree->mem = dmem; |
3d0480ed | 275 | |
b4f1578f AK |
276 | if (!(dtree->devs = dm_hash_create(8))) { |
277 | log_error("dtree hash creation failed"); | |
278 | dm_pool_destroy(dtree->mem); | |
3d0480ed AK |
279 | return NULL; |
280 | } | |
281 | ||
b4f1578f AK |
282 | if (!(dtree->uuids = dm_hash_create(32))) { |
283 | log_error("dtree uuid hash creation failed"); | |
284 | dm_hash_destroy(dtree->devs); | |
285 | dm_pool_destroy(dtree->mem); | |
165e4a11 AK |
286 | return NULL; |
287 | } | |
288 | ||
b4f1578f | 289 | return dtree; |
3d0480ed AK |
290 | } |
291 | ||
b4f1578f | 292 | void dm_tree_free(struct dm_tree *dtree) |
3d0480ed | 293 | { |
b4f1578f | 294 | if (!dtree) |
3d0480ed AK |
295 | return; |
296 | ||
b4f1578f AK |
297 | dm_hash_destroy(dtree->uuids); |
298 | dm_hash_destroy(dtree->devs); | |
299 | dm_pool_destroy(dtree->mem); | |
3d0480ed AK |
300 | } |
301 | ||
04bde319 ZK |
302 | static int _nodes_are_linked(const struct dm_tree_node *parent, |
303 | const struct dm_tree_node *child) | |
3d0480ed | 304 | { |
b4f1578f | 305 | struct dm_tree_link *dlink; |
3d0480ed | 306 | |
2c44337b | 307 | dm_list_iterate_items(dlink, &parent->uses) |
3d0480ed AK |
308 | if (dlink->node == child) |
309 | return 1; | |
3d0480ed AK |
310 | |
311 | return 0; | |
312 | } | |
313 | ||
2c44337b | 314 | static int _link(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 315 | { |
b4f1578f | 316 | struct dm_tree_link *dlink; |
3d0480ed | 317 | |
b4f1578f AK |
318 | if (!(dlink = dm_pool_alloc(node->dtree->mem, sizeof(*dlink)))) { |
319 | log_error("dtree link allocation failed"); | |
3d0480ed AK |
320 | return 0; |
321 | } | |
322 | ||
323 | dlink->node = node; | |
2c44337b | 324 | dm_list_add(list, &dlink->list); |
3d0480ed AK |
325 | |
326 | return 1; | |
327 | } | |
328 | ||
b4f1578f AK |
329 | static int _link_nodes(struct dm_tree_node *parent, |
330 | struct dm_tree_node *child) | |
3d0480ed AK |
331 | { |
332 | if (_nodes_are_linked(parent, child)) | |
333 | return 1; | |
334 | ||
335 | if (!_link(&parent->uses, child)) | |
336 | return 0; | |
337 | ||
338 | if (!_link(&child->used_by, parent)) | |
339 | return 0; | |
340 | ||
341 | return 1; | |
342 | } | |
343 | ||
2c44337b | 344 | static void _unlink(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 345 | { |
b4f1578f | 346 | struct dm_tree_link *dlink; |
3d0480ed | 347 | |
2c44337b | 348 | dm_list_iterate_items(dlink, list) |
3d0480ed | 349 | if (dlink->node == node) { |
2c44337b | 350 | dm_list_del(&dlink->list); |
3d0480ed AK |
351 | break; |
352 | } | |
3d0480ed AK |
353 | } |
354 | ||
b4f1578f AK |
355 | static void _unlink_nodes(struct dm_tree_node *parent, |
356 | struct dm_tree_node *child) | |
3d0480ed AK |
357 | { |
358 | if (!_nodes_are_linked(parent, child)) | |
359 | return; | |
360 | ||
361 | _unlink(&parent->uses, child); | |
362 | _unlink(&child->used_by, parent); | |
363 | } | |
364 | ||
b4f1578f | 365 | static int _add_to_toplevel(struct dm_tree_node *node) |
165e4a11 | 366 | { |
b4f1578f | 367 | return _link_nodes(&node->dtree->root, node); |
165e4a11 AK |
368 | } |
369 | ||
b4f1578f | 370 | static void _remove_from_toplevel(struct dm_tree_node *node) |
3d0480ed | 371 | { |
b1ebf028 | 372 | _unlink_nodes(&node->dtree->root, node); |
3d0480ed AK |
373 | } |
374 | ||
b4f1578f | 375 | static int _add_to_bottomlevel(struct dm_tree_node *node) |
3d0480ed | 376 | { |
b4f1578f | 377 | return _link_nodes(node, &node->dtree->root); |
3d0480ed AK |
378 | } |
379 | ||
b4f1578f | 380 | static void _remove_from_bottomlevel(struct dm_tree_node *node) |
165e4a11 | 381 | { |
b1ebf028 | 382 | _unlink_nodes(node, &node->dtree->root); |
165e4a11 AK |
383 | } |
384 | ||
b4f1578f | 385 | static int _link_tree_nodes(struct dm_tree_node *parent, struct dm_tree_node *child) |
165e4a11 AK |
386 | { |
387 | /* Don't link to root node if child already has a parent */ | |
f77736ca | 388 | if (parent == &parent->dtree->root) { |
b4f1578f | 389 | if (dm_tree_node_num_children(child, 1)) |
165e4a11 AK |
390 | return 1; |
391 | } else | |
392 | _remove_from_toplevel(child); | |
393 | ||
f77736ca | 394 | if (child == &child->dtree->root) { |
b4f1578f | 395 | if (dm_tree_node_num_children(parent, 0)) |
165e4a11 AK |
396 | return 1; |
397 | } else | |
398 | _remove_from_bottomlevel(parent); | |
399 | ||
400 | return _link_nodes(parent, child); | |
401 | } | |
402 | ||
b4f1578f | 403 | static struct dm_tree_node *_create_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
404 | const char *name, |
405 | const char *uuid, | |
165e4a11 | 406 | struct dm_info *info, |
f16aea9e PR |
407 | void *context, |
408 | uint16_t udev_flags) | |
3d0480ed | 409 | { |
b4f1578f | 410 | struct dm_tree_node *node; |
3d0480ed AK |
411 | uint64_t dev; |
412 | ||
b4f1578f AK |
413 | if (!(node = dm_pool_zalloc(dtree->mem, sizeof(*node)))) { |
414 | log_error("_create_dm_tree_node alloc failed"); | |
3d0480ed AK |
415 | return NULL; |
416 | } | |
417 | ||
b4f1578f | 418 | node->dtree = dtree; |
3d0480ed AK |
419 | |
420 | node->name = name; | |
421 | node->uuid = uuid; | |
422 | node->info = *info; | |
165e4a11 | 423 | node->context = context; |
f16aea9e | 424 | node->udev_flags = udev_flags; |
56c28292 | 425 | node->activation_priority = 0; |
3d0480ed | 426 | |
2c44337b AK |
427 | dm_list_init(&node->uses); |
428 | dm_list_init(&node->used_by); | |
429 | dm_list_init(&node->props.segs); | |
3d0480ed AK |
430 | |
431 | dev = MKDEV(info->major, info->minor); | |
432 | ||
b4f1578f | 433 | if (!dm_hash_insert_binary(dtree->devs, (const char *) &dev, |
3d0480ed | 434 | sizeof(dev), node)) { |
b4f1578f AK |
435 | log_error("dtree node hash insertion failed"); |
436 | dm_pool_free(dtree->mem, node); | |
3d0480ed AK |
437 | return NULL; |
438 | } | |
439 | ||
165e4a11 | 440 | if (uuid && *uuid && |
b4f1578f AK |
441 | !dm_hash_insert(dtree->uuids, uuid, node)) { |
442 | log_error("dtree uuid hash insertion failed"); | |
443 | dm_hash_remove_binary(dtree->devs, (const char *) &dev, | |
165e4a11 | 444 | sizeof(dev)); |
b4f1578f | 445 | dm_pool_free(dtree->mem, node); |
165e4a11 AK |
446 | return NULL; |
447 | } | |
448 | ||
3d0480ed AK |
449 | return node; |
450 | } | |
451 | ||
b4f1578f | 452 | static struct dm_tree_node *_find_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
453 | uint32_t major, uint32_t minor) |
454 | { | |
455 | uint64_t dev = MKDEV(major, minor); | |
456 | ||
b4f1578f | 457 | return dm_hash_lookup_binary(dtree->devs, (const char *) &dev, |
3d0480ed AK |
458 | sizeof(dev)); |
459 | } | |
460 | ||
b4f1578f | 461 | static struct dm_tree_node *_find_dm_tree_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
462 | const char *uuid) |
463 | { | |
87f98002 AK |
464 | struct dm_tree_node *node; |
465 | ||
466 | if ((node = dm_hash_lookup(dtree->uuids, uuid))) | |
467 | return node; | |
468 | ||
469 | if (strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) | |
470 | return NULL; | |
471 | ||
472 | return dm_hash_lookup(dtree->uuids, uuid + sizeof(UUID_PREFIX) - 1); | |
165e4a11 AK |
473 | } |
474 | ||
a3f6b2ce | 475 | static int _deps(struct dm_task **dmt, struct dm_pool *mem, uint32_t major, uint32_t minor, |
3d0480ed AK |
476 | const char **name, const char **uuid, |
477 | struct dm_info *info, struct dm_deps **deps) | |
478 | { | |
479 | memset(info, 0, sizeof(*info)); | |
480 | ||
481 | if (!dm_is_dm_major(major)) { | |
482 | *name = ""; | |
483 | *uuid = ""; | |
484 | *deps = NULL; | |
485 | info->major = major; | |
486 | info->minor = minor; | |
487 | info->exists = 0; | |
165e4a11 AK |
488 | info->live_table = 0; |
489 | info->inactive_table = 0; | |
490 | info->read_only = 0; | |
3d0480ed AK |
491 | return 1; |
492 | } | |
493 | ||
494 | if (!(*dmt = dm_task_create(DM_DEVICE_DEPS))) { | |
495 | log_error("deps dm_task creation failed"); | |
496 | return 0; | |
497 | } | |
498 | ||
b4f1578f AK |
499 | if (!dm_task_set_major(*dmt, major)) { |
500 | log_error("_deps: failed to set major for (%" PRIu32 ":%" PRIu32 ")", | |
501 | major, minor); | |
3d0480ed | 502 | goto failed; |
b4f1578f | 503 | } |
3d0480ed | 504 | |
b4f1578f AK |
505 | if (!dm_task_set_minor(*dmt, minor)) { |
506 | log_error("_deps: failed to set minor for (%" PRIu32 ":%" PRIu32 ")", | |
507 | major, minor); | |
3d0480ed | 508 | goto failed; |
b4f1578f | 509 | } |
3d0480ed | 510 | |
b4f1578f AK |
511 | if (!dm_task_run(*dmt)) { |
512 | log_error("_deps: task run failed for (%" PRIu32 ":%" PRIu32 ")", | |
513 | major, minor); | |
3d0480ed | 514 | goto failed; |
b4f1578f | 515 | } |
3d0480ed | 516 | |
b4f1578f AK |
517 | if (!dm_task_get_info(*dmt, info)) { |
518 | log_error("_deps: failed to get info for (%" PRIu32 ":%" PRIu32 ")", | |
519 | major, minor); | |
3d0480ed | 520 | goto failed; |
b4f1578f | 521 | } |
3d0480ed AK |
522 | |
523 | if (!info->exists) { | |
524 | *name = ""; | |
525 | *uuid = ""; | |
526 | *deps = NULL; | |
527 | } else { | |
528 | if (info->major != major) { | |
b4f1578f | 529 | log_error("Inconsistent dtree major number: %u != %u", |
3d0480ed AK |
530 | major, info->major); |
531 | goto failed; | |
532 | } | |
533 | if (info->minor != minor) { | |
b4f1578f | 534 | log_error("Inconsistent dtree minor number: %u != %u", |
3d0480ed AK |
535 | minor, info->minor); |
536 | goto failed; | |
537 | } | |
a3f6b2ce | 538 | if (!(*name = dm_pool_strdup(mem, dm_task_get_name(*dmt)))) { |
3d0480ed AK |
539 | log_error("name pool_strdup failed"); |
540 | goto failed; | |
541 | } | |
a3f6b2ce | 542 | if (!(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(*dmt)))) { |
3d0480ed AK |
543 | log_error("uuid pool_strdup failed"); |
544 | goto failed; | |
545 | } | |
546 | *deps = dm_task_get_deps(*dmt); | |
547 | } | |
548 | ||
549 | return 1; | |
550 | ||
551 | failed: | |
552 | dm_task_destroy(*dmt); | |
553 | return 0; | |
554 | } | |
555 | ||
b4f1578f AK |
556 | static struct dm_tree_node *_add_dev(struct dm_tree *dtree, |
557 | struct dm_tree_node *parent, | |
cda69e17 PR |
558 | uint32_t major, uint32_t minor, |
559 | uint16_t udev_flags) | |
3d0480ed AK |
560 | { |
561 | struct dm_task *dmt = NULL; | |
562 | struct dm_info info; | |
563 | struct dm_deps *deps = NULL; | |
564 | const char *name = NULL; | |
565 | const char *uuid = NULL; | |
b4f1578f | 566 | struct dm_tree_node *node = NULL; |
3d0480ed | 567 | uint32_t i; |
3d0480ed AK |
568 | int new = 0; |
569 | ||
570 | /* Already in tree? */ | |
b4f1578f AK |
571 | if (!(node = _find_dm_tree_node(dtree, major, minor))) { |
572 | if (!_deps(&dmt, dtree->mem, major, minor, &name, &uuid, &info, &deps)) | |
573 | return_NULL; | |
3d0480ed | 574 | |
f16aea9e | 575 | if (!(node = _create_dm_tree_node(dtree, name, uuid, &info, |
cda69e17 | 576 | NULL, udev_flags))) |
b4f1578f | 577 | goto_out; |
3d0480ed AK |
578 | new = 1; |
579 | } | |
580 | ||
165e4a11 AK |
581 | if (!_link_tree_nodes(parent, node)) { |
582 | node = NULL; | |
b4f1578f | 583 | goto_out; |
165e4a11 | 584 | } |
3d0480ed AK |
585 | |
586 | /* If node was already in tree, no need to recurse. */ | |
587 | if (!new) | |
165e4a11 | 588 | goto out; |
3d0480ed AK |
589 | |
590 | /* Can't recurse if not a mapped device or there are no dependencies */ | |
591 | if (!node->info.exists || !deps->count) { | |
b4f1578f AK |
592 | if (!_add_to_bottomlevel(node)) { |
593 | stack; | |
165e4a11 | 594 | node = NULL; |
b4f1578f | 595 | } |
165e4a11 | 596 | goto out; |
3d0480ed AK |
597 | } |
598 | ||
599 | /* Add dependencies to tree */ | |
600 | for (i = 0; i < deps->count; i++) | |
b4f1578f | 601 | if (!_add_dev(dtree, node, MAJOR(deps->device[i]), |
cda69e17 | 602 | MINOR(deps->device[i]), udev_flags)) { |
165e4a11 | 603 | node = NULL; |
b4f1578f | 604 | goto_out; |
165e4a11 | 605 | } |
3d0480ed | 606 | |
3d0480ed AK |
607 | out: |
608 | if (dmt) | |
609 | dm_task_destroy(dmt); | |
610 | ||
165e4a11 AK |
611 | return node; |
612 | } | |
613 | ||
b4f1578f | 614 | static int _node_clear_table(struct dm_tree_node *dnode) |
165e4a11 AK |
615 | { |
616 | struct dm_task *dmt; | |
617 | struct dm_info *info; | |
618 | const char *name; | |
619 | int r; | |
620 | ||
621 | if (!(info = &dnode->info)) { | |
b4f1578f | 622 | log_error("_node_clear_table failed: missing info"); |
165e4a11 AK |
623 | return 0; |
624 | } | |
625 | ||
b4f1578f AK |
626 | if (!(name = dm_tree_node_get_name(dnode))) { |
627 | log_error("_node_clear_table failed: missing name"); | |
165e4a11 AK |
628 | return 0; |
629 | } | |
630 | ||
631 | /* Is there a table? */ | |
632 | if (!info->exists || !info->inactive_table) | |
633 | return 1; | |
634 | ||
10d0d9c7 AK |
635 | // FIXME Get inactive deps. If any dev referenced has 1 opener and no live table, remove it after the clear. |
636 | ||
165e4a11 AK |
637 | log_verbose("Clearing inactive table %s (%" PRIu32 ":%" PRIu32 ")", |
638 | name, info->major, info->minor); | |
639 | ||
640 | if (!(dmt = dm_task_create(DM_DEVICE_CLEAR))) { | |
165e4a11 AK |
641 | log_error("Table clear dm_task creation failed for %s", name); |
642 | return 0; | |
643 | } | |
644 | ||
645 | if (!dm_task_set_major(dmt, info->major) || | |
646 | !dm_task_set_minor(dmt, info->minor)) { | |
647 | log_error("Failed to set device number for %s table clear", name); | |
648 | dm_task_destroy(dmt); | |
649 | return 0; | |
650 | } | |
651 | ||
652 | r = dm_task_run(dmt); | |
653 | ||
654 | if (!dm_task_get_info(dmt, info)) { | |
b4f1578f | 655 | log_error("_node_clear_table failed: info missing after running task for %s", name); |
165e4a11 AK |
656 | r = 0; |
657 | } | |
658 | ||
659 | dm_task_destroy(dmt); | |
660 | ||
3d0480ed AK |
661 | return r; |
662 | } | |
663 | ||
b4f1578f | 664 | struct dm_tree_node *dm_tree_add_new_dev(struct dm_tree *dtree, |
165e4a11 AK |
665 | const char *name, |
666 | const char *uuid, | |
667 | uint32_t major, uint32_t minor, | |
668 | int read_only, | |
669 | int clear_inactive, | |
670 | void *context) | |
671 | { | |
b4f1578f | 672 | struct dm_tree_node *dnode; |
165e4a11 AK |
673 | struct dm_info info; |
674 | const char *name2; | |
675 | const char *uuid2; | |
676 | ||
677 | /* Do we need to add node to tree? */ | |
b4f1578f AK |
678 | if (!(dnode = dm_tree_find_node_by_uuid(dtree, uuid))) { |
679 | if (!(name2 = dm_pool_strdup(dtree->mem, name))) { | |
165e4a11 AK |
680 | log_error("name pool_strdup failed"); |
681 | return NULL; | |
682 | } | |
b4f1578f | 683 | if (!(uuid2 = dm_pool_strdup(dtree->mem, uuid))) { |
165e4a11 AK |
684 | log_error("uuid pool_strdup failed"); |
685 | return NULL; | |
686 | } | |
687 | ||
688 | info.major = 0; | |
689 | info.minor = 0; | |
690 | info.exists = 0; | |
691 | info.live_table = 0; | |
692 | info.inactive_table = 0; | |
693 | info.read_only = 0; | |
694 | ||
f16aea9e PR |
695 | if (!(dnode = _create_dm_tree_node(dtree, name2, uuid2, &info, |
696 | context, 0))) | |
b4f1578f | 697 | return_NULL; |
165e4a11 AK |
698 | |
699 | /* Attach to root node until a table is supplied */ | |
b4f1578f AK |
700 | if (!_add_to_toplevel(dnode) || !_add_to_bottomlevel(dnode)) |
701 | return_NULL; | |
165e4a11 AK |
702 | |
703 | dnode->props.major = major; | |
704 | dnode->props.minor = minor; | |
705 | dnode->props.new_name = NULL; | |
bb875bb9 | 706 | dnode->props.size_changed = 0; |
165e4a11 AK |
707 | } else if (strcmp(name, dnode->name)) { |
708 | /* Do we need to rename node? */ | |
b4f1578f | 709 | if (!(dnode->props.new_name = dm_pool_strdup(dtree->mem, name))) { |
165e4a11 AK |
710 | log_error("name pool_strdup failed"); |
711 | return 0; | |
712 | } | |
713 | } | |
714 | ||
715 | dnode->props.read_only = read_only ? 1 : 0; | |
52b84409 AK |
716 | dnode->props.read_ahead = DM_READ_AHEAD_AUTO; |
717 | dnode->props.read_ahead_flags = 0; | |
165e4a11 | 718 | |
b4f1578f AK |
719 | if (clear_inactive && !_node_clear_table(dnode)) |
720 | return_NULL; | |
165e4a11 AK |
721 | |
722 | dnode->context = context; | |
f16aea9e | 723 | dnode->udev_flags = 0; |
165e4a11 AK |
724 | |
725 | return dnode; | |
726 | } | |
727 | ||
f16aea9e PR |
728 | struct dm_tree_node *dm_tree_add_new_dev_with_udev_flags(struct dm_tree *dtree, |
729 | const char *name, | |
730 | const char *uuid, | |
731 | uint32_t major, | |
732 | uint32_t minor, | |
733 | int read_only, | |
734 | int clear_inactive, | |
735 | void *context, | |
736 | uint16_t udev_flags) | |
737 | { | |
738 | struct dm_tree_node *node; | |
739 | ||
740 | if ((node = dm_tree_add_new_dev(dtree, name, uuid, major, minor, read_only, | |
741 | clear_inactive, context))) | |
742 | node->udev_flags = udev_flags; | |
743 | ||
744 | return node; | |
745 | } | |
746 | ||
83c606ae JEB |
747 | void dm_tree_node_set_udev_flags(struct dm_tree_node *dnode, uint16_t udev_flags) |
748 | ||
749 | { | |
750 | struct dm_info *dinfo = &dnode->info; | |
751 | ||
752 | if (udev_flags != dnode->udev_flags) | |
753 | log_debug("Resetting %s (%" PRIu32 ":%" PRIu32 | |
754 | ") udev_flags from 0x%x to 0x%x", | |
755 | dnode->name, dinfo->major, dinfo->minor, | |
756 | dnode->udev_flags, udev_flags); | |
757 | dnode->udev_flags = udev_flags; | |
758 | } | |
f16aea9e | 759 | |
52b84409 AK |
760 | void dm_tree_node_set_read_ahead(struct dm_tree_node *dnode, |
761 | uint32_t read_ahead, | |
762 | uint32_t read_ahead_flags) | |
08e64ce5 | 763 | { |
52b84409 AK |
764 | dnode->props.read_ahead = read_ahead; |
765 | dnode->props.read_ahead_flags = read_ahead_flags; | |
766 | } | |
767 | ||
76d1aec8 ZK |
768 | void dm_tree_node_set_presuspend_node(struct dm_tree_node *node, |
769 | struct dm_tree_node *presuspend_node) | |
770 | { | |
771 | node->presuspend_node = presuspend_node; | |
772 | } | |
773 | ||
b4f1578f | 774 | int dm_tree_add_dev(struct dm_tree *dtree, uint32_t major, uint32_t minor) |
3d0480ed | 775 | { |
cda69e17 PR |
776 | return _add_dev(dtree, &dtree->root, major, minor, 0) ? 1 : 0; |
777 | } | |
778 | ||
779 | int dm_tree_add_dev_with_udev_flags(struct dm_tree *dtree, uint32_t major, | |
780 | uint32_t minor, uint16_t udev_flags) | |
781 | { | |
782 | return _add_dev(dtree, &dtree->root, major, minor, udev_flags) ? 1 : 0; | |
3d0480ed AK |
783 | } |
784 | ||
04bde319 | 785 | const char *dm_tree_node_get_name(const struct dm_tree_node *node) |
3d0480ed AK |
786 | { |
787 | return node->info.exists ? node->name : ""; | |
788 | } | |
789 | ||
04bde319 | 790 | const char *dm_tree_node_get_uuid(const struct dm_tree_node *node) |
3d0480ed AK |
791 | { |
792 | return node->info.exists ? node->uuid : ""; | |
793 | } | |
794 | ||
04bde319 | 795 | const struct dm_info *dm_tree_node_get_info(const struct dm_tree_node *node) |
3d0480ed AK |
796 | { |
797 | return &node->info; | |
798 | } | |
799 | ||
04bde319 | 800 | void *dm_tree_node_get_context(const struct dm_tree_node *node) |
165e4a11 AK |
801 | { |
802 | return node->context; | |
803 | } | |
804 | ||
04bde319 | 805 | int dm_tree_node_size_changed(const struct dm_tree_node *dnode) |
eb91c4ee MB |
806 | { |
807 | return dnode->props.size_changed; | |
808 | } | |
809 | ||
04bde319 | 810 | int dm_tree_node_num_children(const struct dm_tree_node *node, uint32_t inverted) |
3d0480ed AK |
811 | { |
812 | if (inverted) { | |
b4f1578f | 813 | if (_nodes_are_linked(&node->dtree->root, node)) |
3d0480ed | 814 | return 0; |
2c44337b | 815 | return dm_list_size(&node->used_by); |
3d0480ed AK |
816 | } |
817 | ||
b4f1578f | 818 | if (_nodes_are_linked(node, &node->dtree->root)) |
3d0480ed AK |
819 | return 0; |
820 | ||
2c44337b | 821 | return dm_list_size(&node->uses); |
3d0480ed AK |
822 | } |
823 | ||
2b69db1f AK |
824 | /* |
825 | * Returns 1 if no prefix supplied | |
826 | */ | |
827 | static int _uuid_prefix_matches(const char *uuid, const char *uuid_prefix, size_t uuid_prefix_len) | |
828 | { | |
829 | if (!uuid_prefix) | |
830 | return 1; | |
831 | ||
832 | if (!strncmp(uuid, uuid_prefix, uuid_prefix_len)) | |
833 | return 1; | |
834 | ||
835 | /* Handle transition: active device uuids might be missing the prefix */ | |
836 | if (uuid_prefix_len <= 4) | |
837 | return 0; | |
838 | ||
87f98002 | 839 | if (!strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) |
872dea04 AK |
840 | return 0; |
841 | ||
87f98002 | 842 | if (strncmp(uuid_prefix, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) |
2b69db1f AK |
843 | return 0; |
844 | ||
87f98002 | 845 | if (!strncmp(uuid, uuid_prefix + sizeof(UUID_PREFIX) - 1, uuid_prefix_len - (sizeof(UUID_PREFIX) - 1))) |
2b69db1f AK |
846 | return 1; |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
690a5da2 AK |
851 | /* |
852 | * Returns 1 if no children. | |
853 | */ | |
b4f1578f | 854 | static int _children_suspended(struct dm_tree_node *node, |
690a5da2 AK |
855 | uint32_t inverted, |
856 | const char *uuid_prefix, | |
857 | size_t uuid_prefix_len) | |
858 | { | |
2c44337b | 859 | struct dm_list *list; |
b4f1578f | 860 | struct dm_tree_link *dlink; |
690a5da2 AK |
861 | const struct dm_info *dinfo; |
862 | const char *uuid; | |
863 | ||
864 | if (inverted) { | |
b4f1578f | 865 | if (_nodes_are_linked(&node->dtree->root, node)) |
690a5da2 AK |
866 | return 1; |
867 | list = &node->used_by; | |
868 | } else { | |
b4f1578f | 869 | if (_nodes_are_linked(node, &node->dtree->root)) |
690a5da2 AK |
870 | return 1; |
871 | list = &node->uses; | |
872 | } | |
873 | ||
2c44337b | 874 | dm_list_iterate_items(dlink, list) { |
b4f1578f | 875 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { |
690a5da2 AK |
876 | stack; |
877 | continue; | |
878 | } | |
879 | ||
880 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 881 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 AK |
882 | continue; |
883 | ||
76d1aec8 ZK |
884 | /* Ignore if parent node wants to presuspend this node */ |
885 | if (dlink->node->presuspend_node == node) | |
886 | continue; | |
887 | ||
b4f1578f AK |
888 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { |
889 | stack; /* FIXME Is this normal? */ | |
690a5da2 AK |
890 | return 0; |
891 | } | |
892 | ||
893 | if (!dinfo->suspended) | |
894 | return 0; | |
895 | } | |
896 | ||
897 | return 1; | |
898 | } | |
899 | ||
3d0480ed AK |
900 | /* |
901 | * Set major and minor to zero for root of tree. | |
902 | */ | |
b4f1578f | 903 | struct dm_tree_node *dm_tree_find_node(struct dm_tree *dtree, |
3d0480ed AK |
904 | uint32_t major, |
905 | uint32_t minor) | |
906 | { | |
907 | if (!major && !minor) | |
b4f1578f | 908 | return &dtree->root; |
3d0480ed | 909 | |
b4f1578f | 910 | return _find_dm_tree_node(dtree, major, minor); |
3d0480ed AK |
911 | } |
912 | ||
165e4a11 AK |
913 | /* |
914 | * Set uuid to NULL for root of tree. | |
915 | */ | |
b4f1578f | 916 | struct dm_tree_node *dm_tree_find_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
917 | const char *uuid) |
918 | { | |
919 | if (!uuid || !*uuid) | |
b4f1578f | 920 | return &dtree->root; |
165e4a11 | 921 | |
b4f1578f | 922 | return _find_dm_tree_node_by_uuid(dtree, uuid); |
165e4a11 AK |
923 | } |
924 | ||
3d0480ed AK |
925 | /* |
926 | * First time set *handle to NULL. | |
927 | * Set inverted to invert the tree. | |
928 | */ | |
b4f1578f | 929 | struct dm_tree_node *dm_tree_next_child(void **handle, |
04bde319 ZK |
930 | const struct dm_tree_node *parent, |
931 | uint32_t inverted) | |
3d0480ed | 932 | { |
2c44337b | 933 | struct dm_list **dlink = (struct dm_list **) handle; |
04bde319 | 934 | const struct dm_list *use_list; |
3d0480ed AK |
935 | |
936 | if (inverted) | |
937 | use_list = &parent->used_by; | |
938 | else | |
939 | use_list = &parent->uses; | |
940 | ||
941 | if (!*dlink) | |
2c44337b | 942 | *dlink = dm_list_first(use_list); |
3d0480ed | 943 | else |
2c44337b | 944 | *dlink = dm_list_next(use_list, *dlink); |
3d0480ed | 945 | |
2c44337b | 946 | return (*dlink) ? dm_list_item(*dlink, struct dm_tree_link)->node : NULL; |
3d0480ed AK |
947 | } |
948 | ||
3e8c6b73 | 949 | /* |
a6d97ede | 950 | * Deactivate a device with its dependencies if the uuid prefix matches. |
3e8c6b73 | 951 | */ |
db208f51 AK |
952 | static int _info_by_dev(uint32_t major, uint32_t minor, int with_open_count, |
953 | struct dm_info *info) | |
3e8c6b73 AK |
954 | { |
955 | struct dm_task *dmt; | |
956 | int r; | |
957 | ||
958 | if (!(dmt = dm_task_create(DM_DEVICE_INFO))) { | |
959 | log_error("_info_by_dev: dm_task creation failed"); | |
960 | return 0; | |
961 | } | |
962 | ||
963 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
964 | log_error("_info_by_dev: Failed to set device number"); | |
965 | dm_task_destroy(dmt); | |
966 | return 0; | |
967 | } | |
968 | ||
db208f51 AK |
969 | if (!with_open_count && !dm_task_no_open_count(dmt)) |
970 | log_error("Failed to disable open_count"); | |
971 | ||
3e8c6b73 AK |
972 | if ((r = dm_task_run(dmt))) |
973 | r = dm_task_get_info(dmt, info); | |
974 | ||
975 | dm_task_destroy(dmt); | |
976 | ||
977 | return r; | |
978 | } | |
979 | ||
4ce43894 | 980 | static int _check_device_not_in_use(const char *name, struct dm_info *info) |
125712be PR |
981 | { |
982 | if (!info->exists) | |
983 | return 1; | |
984 | ||
985 | /* If sysfs is not used, use open_count information only. */ | |
c3e5b497 PR |
986 | if (!*dm_sysfs_dir()) { |
987 | if (info->open_count) { | |
4ce43894 ZK |
988 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") in use", |
989 | name, info->major, info->minor); | |
c3e5b497 PR |
990 | return 0; |
991 | } | |
992 | ||
993 | return 1; | |
994 | } | |
125712be PR |
995 | |
996 | if (dm_device_has_holders(info->major, info->minor)) { | |
4ce43894 ZK |
997 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") is used " |
998 | "by another device.", name, info->major, info->minor); | |
125712be PR |
999 | return 0; |
1000 | } | |
1001 | ||
1002 | if (dm_device_has_mounted_fs(info->major, info->minor)) { | |
4ce43894 ZK |
1003 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") contains " |
1004 | "a filesystem in use.", name, info->major, info->minor); | |
125712be PR |
1005 | return 0; |
1006 | } | |
1007 | ||
1008 | return 1; | |
1009 | } | |
1010 | ||
f3ef15ef ZK |
1011 | /* Check if all parent nodes of given node have open_count == 0 */ |
1012 | static int _node_has_closed_parents(struct dm_tree_node *node, | |
1013 | const char *uuid_prefix, | |
1014 | size_t uuid_prefix_len) | |
1015 | { | |
1016 | struct dm_tree_link *dlink; | |
1017 | const struct dm_info *dinfo; | |
1018 | struct dm_info info; | |
1019 | const char *uuid; | |
1020 | ||
1021 | /* Iterate through parents of this node */ | |
1022 | dm_list_iterate_items(dlink, &node->used_by) { | |
1023 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { | |
1024 | stack; | |
1025 | continue; | |
1026 | } | |
1027 | ||
1028 | /* Ignore if it doesn't belong to this VG */ | |
1029 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) | |
1030 | continue; | |
1031 | ||
1032 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { | |
1033 | stack; /* FIXME Is this normal? */ | |
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | /* Refresh open_count */ | |
1038 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) || | |
1039 | !info.exists) | |
1040 | continue; | |
1041 | ||
eb418883 ZK |
1042 | if (info.open_count) { |
1043 | log_debug("Node %s %d:%d has open_count %d", uuid_prefix, | |
1044 | dinfo->major, dinfo->minor, info.open_count); | |
f3ef15ef | 1045 | return 0; |
eb418883 | 1046 | } |
f3ef15ef ZK |
1047 | } |
1048 | ||
1049 | return 1; | |
1050 | } | |
1051 | ||
f16aea9e | 1052 | static int _deactivate_node(const char *name, uint32_t major, uint32_t minor, |
787200ef | 1053 | uint32_t *cookie, uint16_t udev_flags, int retry) |
3e8c6b73 AK |
1054 | { |
1055 | struct dm_task *dmt; | |
bd90c6b2 | 1056 | int r = 0; |
3e8c6b73 AK |
1057 | |
1058 | log_verbose("Removing %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1059 | ||
1060 | if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) { | |
1061 | log_error("Deactivation dm_task creation failed for %s", name); | |
1062 | return 0; | |
1063 | } | |
1064 | ||
1065 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1066 | log_error("Failed to set device number for %s deactivation", name); | |
bd90c6b2 | 1067 | goto out; |
3e8c6b73 AK |
1068 | } |
1069 | ||
1070 | if (!dm_task_no_open_count(dmt)) | |
1071 | log_error("Failed to disable open_count"); | |
1072 | ||
f16aea9e | 1073 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1074 | goto out; |
1075 | ||
787200ef PR |
1076 | |
1077 | if (retry) | |
1078 | dm_task_retry_remove(dmt); | |
1079 | ||
3e8c6b73 AK |
1080 | r = dm_task_run(dmt); |
1081 | ||
0437bccc AK |
1082 | /* FIXME Until kernel returns actual name so dm-iface.c can handle it */ |
1083 | rm_dev_node(name, dmt->cookie_set && !(udev_flags & DM_UDEV_DISABLE_DM_RULES_FLAG), | |
9032898e | 1084 | dmt->cookie_set && (udev_flags & DM_UDEV_DISABLE_LIBRARY_FALLBACK)); |
165e4a11 | 1085 | |
db208f51 AK |
1086 | /* FIXME Remove node from tree or mark invalid? */ |
1087 | ||
bd90c6b2 | 1088 | out: |
db208f51 AK |
1089 | dm_task_destroy(dmt); |
1090 | ||
1091 | return r; | |
1092 | } | |
1093 | ||
bd90c6b2 | 1094 | static int _rename_node(const char *old_name, const char *new_name, uint32_t major, |
f16aea9e | 1095 | uint32_t minor, uint32_t *cookie, uint16_t udev_flags) |
165e4a11 AK |
1096 | { |
1097 | struct dm_task *dmt; | |
1098 | int r = 0; | |
1099 | ||
1100 | log_verbose("Renaming %s (%" PRIu32 ":%" PRIu32 ") to %s", old_name, major, minor, new_name); | |
1101 | ||
1102 | if (!(dmt = dm_task_create(DM_DEVICE_RENAME))) { | |
1103 | log_error("Rename dm_task creation failed for %s", old_name); | |
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | if (!dm_task_set_name(dmt, old_name)) { | |
1108 | log_error("Failed to set name for %s rename.", old_name); | |
1109 | goto out; | |
1110 | } | |
1111 | ||
b4f1578f | 1112 | if (!dm_task_set_newname(dmt, new_name)) |
40e5fd8b | 1113 | goto_out; |
165e4a11 AK |
1114 | |
1115 | if (!dm_task_no_open_count(dmt)) | |
1116 | log_error("Failed to disable open_count"); | |
1117 | ||
f16aea9e | 1118 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1119 | goto out; |
1120 | ||
165e4a11 AK |
1121 | r = dm_task_run(dmt); |
1122 | ||
1123 | out: | |
1124 | dm_task_destroy(dmt); | |
1125 | ||
1126 | return r; | |
1127 | } | |
1128 | ||
165e4a11 AK |
1129 | /* FIXME Merge with _suspend_node? */ |
1130 | static int _resume_node(const char *name, uint32_t major, uint32_t minor, | |
52b84409 | 1131 | uint32_t read_ahead, uint32_t read_ahead_flags, |
f16aea9e | 1132 | struct dm_info *newinfo, uint32_t *cookie, |
1840aa09 | 1133 | uint16_t udev_flags, int already_suspended) |
165e4a11 AK |
1134 | { |
1135 | struct dm_task *dmt; | |
bd90c6b2 | 1136 | int r = 0; |
165e4a11 AK |
1137 | |
1138 | log_verbose("Resuming %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1139 | ||
1140 | if (!(dmt = dm_task_create(DM_DEVICE_RESUME))) { | |
9a8f192a | 1141 | log_debug("Suspend dm_task creation failed for %s.", name); |
165e4a11 AK |
1142 | return 0; |
1143 | } | |
1144 | ||
0b7d16bc AK |
1145 | /* FIXME Kernel should fill in name on return instead */ |
1146 | if (!dm_task_set_name(dmt, name)) { | |
9a8f192a | 1147 | log_debug("Failed to set device name for %s resumption.", name); |
bd90c6b2 | 1148 | goto out; |
0b7d16bc AK |
1149 | } |
1150 | ||
165e4a11 AK |
1151 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { |
1152 | log_error("Failed to set device number for %s resumption.", name); | |
bd90c6b2 | 1153 | goto out; |
165e4a11 AK |
1154 | } |
1155 | ||
1156 | if (!dm_task_no_open_count(dmt)) | |
1157 | log_error("Failed to disable open_count"); | |
1158 | ||
52b84409 AK |
1159 | if (!dm_task_set_read_ahead(dmt, read_ahead, read_ahead_flags)) |
1160 | log_error("Failed to set read ahead"); | |
1161 | ||
f16aea9e | 1162 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
9a8f192a | 1163 | goto_out; |
bd90c6b2 | 1164 | |
9a8f192a ZK |
1165 | if (!(r = dm_task_run(dmt))) |
1166 | goto_out; | |
1167 | ||
1168 | if (already_suspended) | |
1169 | dec_suspended(); | |
1170 | ||
1171 | if (!(r = dm_task_get_info(dmt, newinfo))) | |
1172 | stack; | |
165e4a11 | 1173 | |
bd90c6b2 | 1174 | out: |
165e4a11 AK |
1175 | dm_task_destroy(dmt); |
1176 | ||
1177 | return r; | |
1178 | } | |
1179 | ||
db208f51 | 1180 | static int _suspend_node(const char *name, uint32_t major, uint32_t minor, |
b9ffd32c | 1181 | int skip_lockfs, int no_flush, struct dm_info *newinfo) |
db208f51 AK |
1182 | { |
1183 | struct dm_task *dmt; | |
1184 | int r; | |
1185 | ||
b9ffd32c AK |
1186 | log_verbose("Suspending %s (%" PRIu32 ":%" PRIu32 ")%s%s", |
1187 | name, major, minor, | |
1188 | skip_lockfs ? "" : " with filesystem sync", | |
6e1898a5 | 1189 | no_flush ? "" : " with device flush"); |
db208f51 AK |
1190 | |
1191 | if (!(dmt = dm_task_create(DM_DEVICE_SUSPEND))) { | |
1192 | log_error("Suspend dm_task creation failed for %s", name); | |
1193 | return 0; | |
1194 | } | |
1195 | ||
1196 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1197 | log_error("Failed to set device number for %s suspension.", name); | |
1198 | dm_task_destroy(dmt); | |
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | if (!dm_task_no_open_count(dmt)) | |
1203 | log_error("Failed to disable open_count"); | |
1204 | ||
c55b1410 AK |
1205 | if (skip_lockfs && !dm_task_skip_lockfs(dmt)) |
1206 | log_error("Failed to set skip_lockfs flag."); | |
1207 | ||
b9ffd32c AK |
1208 | if (no_flush && !dm_task_no_flush(dmt)) |
1209 | log_error("Failed to set no_flush flag."); | |
1210 | ||
1840aa09 AK |
1211 | if ((r = dm_task_run(dmt))) { |
1212 | inc_suspended(); | |
db208f51 | 1213 | r = dm_task_get_info(dmt, newinfo); |
1840aa09 | 1214 | } |
db208f51 | 1215 | |
3e8c6b73 AK |
1216 | dm_task_destroy(dmt); |
1217 | ||
1218 | return r; | |
1219 | } | |
1220 | ||
25e6ab87 | 1221 | static int _thin_pool_status_transaction_id(struct dm_tree_node *dnode, uint64_t *transaction_id) |
e0ea24be ZK |
1222 | { |
1223 | struct dm_task *dmt; | |
1224 | int r = 0; | |
1225 | uint64_t start, length; | |
1226 | char *type = NULL; | |
1227 | char *params = NULL; | |
e0ea24be | 1228 | |
25e6ab87 ZK |
1229 | if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) |
1230 | return_0; | |
e0ea24be | 1231 | |
25e6ab87 ZK |
1232 | if (!dm_task_set_major(dmt, dnode->info.major) || |
1233 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
1234 | log_error("Failed to set major minor."); | |
1235 | goto out; | |
e0ea24be ZK |
1236 | } |
1237 | ||
25e6ab87 ZK |
1238 | if (!dm_task_run(dmt)) |
1239 | goto_out; | |
1240 | ||
1241 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); | |
1242 | ||
1243 | if (type && (strcmp(type, "thin-pool") != 0)) { | |
c590a9cd | 1244 | log_error("Expected thin-pool target for %d:%d and got %s.", |
25e6ab87 | 1245 | dnode->info.major, dnode->info.minor, type); |
e0ea24be ZK |
1246 | goto out; |
1247 | } | |
1248 | ||
25e6ab87 | 1249 | if (!params || (sscanf(params, "%" PRIu64, transaction_id) != 1)) { |
c590a9cd | 1250 | log_error("Failed to parse transaction_id from %s.", params); |
e0ea24be ZK |
1251 | goto out; |
1252 | } | |
1253 | ||
25e6ab87 | 1254 | log_debug("Thin pool transaction id: %" PRIu64 " status: %s.", *transaction_id, params); |
e0ea24be | 1255 | |
25e6ab87 ZK |
1256 | r = 1; |
1257 | out: | |
1258 | dm_task_destroy(dmt); | |
e0ea24be | 1259 | |
25e6ab87 ZK |
1260 | return r; |
1261 | } | |
e0ea24be | 1262 | |
25e6ab87 ZK |
1263 | static int _thin_pool_node_message(struct dm_tree_node *dnode, struct thin_message *tm) |
1264 | { | |
1265 | struct dm_task *dmt; | |
1266 | struct dm_thin_message *m = &tm->message; | |
1267 | char buf[64]; | |
1268 | int r; | |
e0ea24be | 1269 | |
25e6ab87 ZK |
1270 | switch (m->type) { |
1271 | case DM_THIN_MESSAGE_CREATE_SNAP: | |
1272 | r = dm_snprintf(buf, sizeof(buf), "create_snap %u %u", | |
1273 | m->u.m_create_snap.device_id, | |
1274 | m->u.m_create_snap.origin_id); | |
1275 | break; | |
1276 | case DM_THIN_MESSAGE_CREATE_THIN: | |
1277 | r = dm_snprintf(buf, sizeof(buf), "create_thin %u", | |
1278 | m->u.m_create_thin.device_id); | |
1279 | break; | |
1280 | case DM_THIN_MESSAGE_DELETE: | |
1281 | r = dm_snprintf(buf, sizeof(buf), "delete %u", | |
1282 | m->u.m_delete.device_id); | |
1283 | break; | |
1284 | case DM_THIN_MESSAGE_TRIM: | |
1285 | r = dm_snprintf(buf, sizeof(buf), "trim %u %" PRIu64, | |
1286 | m->u.m_trim.device_id, | |
1287 | m->u.m_trim.new_size); | |
1288 | break; | |
1289 | case DM_THIN_MESSAGE_SET_TRANSACTION_ID: | |
1290 | r = dm_snprintf(buf, sizeof(buf), | |
1291 | "set_transaction_id %" PRIu64 " %" PRIu64, | |
1292 | m->u.m_set_transaction_id.current_id, | |
1293 | m->u.m_set_transaction_id.new_id); | |
1294 | break; | |
1295 | } | |
1296 | ||
1297 | if (!r) { | |
1298 | log_error("Failed to prepare message."); | |
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | r = 0; | |
1303 | ||
1304 | if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG))) | |
1305 | return_0; | |
1306 | ||
1307 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
1308 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
1309 | log_error("Failed to set message major minor."); | |
1310 | goto out; | |
1311 | } | |
1312 | ||
1313 | if (!dm_task_set_message(dmt, buf)) | |
1314 | goto_out; | |
1315 | ||
660a42bc ZK |
1316 | /* Internal functionality of dm_task */ |
1317 | dmt->expected_errno = tm->expected_errno; | |
1318 | ||
25e6ab87 ZK |
1319 | if (!dm_task_run(dmt)) |
1320 | goto_out; | |
1321 | ||
1322 | r = 1; | |
e0ea24be ZK |
1323 | out: |
1324 | dm_task_destroy(dmt); | |
1325 | ||
1326 | return r; | |
1327 | } | |
1328 | ||
11f64f0a ZK |
1329 | static int _node_send_messages(struct dm_tree_node *dnode, |
1330 | const char *uuid_prefix, | |
1331 | size_t uuid_prefix_len) | |
25e6ab87 ZK |
1332 | { |
1333 | struct load_segment *seg; | |
1334 | struct thin_message *tmsg; | |
11f64f0a | 1335 | uint64_t trans_id; |
25e6ab87 ZK |
1336 | const char *uuid; |
1337 | ||
11f64f0a ZK |
1338 | if ((dnode == &dnode->dtree->root) || /* root has props.segs uninitialized */ |
1339 | !dnode->info.exists || (dm_list_size(&dnode->props.segs) != 1)) | |
25e6ab87 ZK |
1340 | return 1; |
1341 | ||
1342 | seg = dm_list_item(dm_list_last(&dnode->props.segs), struct load_segment); | |
25e6ab87 ZK |
1343 | if (seg->type != SEG_THIN_POOL) |
1344 | return 1; | |
1345 | ||
1346 | if (!(uuid = dm_tree_node_get_uuid(dnode))) | |
1347 | return_0; | |
1348 | ||
1349 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) { | |
1350 | log_debug("UUID \"%s\" does not match.", uuid); | |
1351 | return 1; | |
1352 | } | |
1353 | ||
11f64f0a | 1354 | if (!_thin_pool_status_transaction_id(dnode, &trans_id)) |
25e6ab87 ZK |
1355 | return_0; |
1356 | ||
11f64f0a | 1357 | if (trans_id == dnode->props.thin_pool_transaction_id) |
25e6ab87 ZK |
1358 | return 1; /* In sync - skip messages */ |
1359 | ||
11f64f0a | 1360 | if (trans_id != (dnode->props.thin_pool_transaction_id - 1)) { |
25e6ab87 | 1361 | log_error("Thin pool transaction_id=%" PRIu64 ", while expected: %" PRIu64 ".", |
11f64f0a | 1362 | trans_id, dnode->props.thin_pool_transaction_id - 1); |
25e6ab87 ZK |
1363 | return 0; /* Nothing to send */ |
1364 | } | |
1365 | ||
1366 | dm_list_iterate_items(tmsg, &seg->thin_messages) | |
1367 | if (!(_thin_pool_node_message(dnode, tmsg))) | |
1368 | return_0; | |
1369 | ||
1370 | return 1; | |
1371 | } | |
1372 | ||
18e0f934 AK |
1373 | /* |
1374 | * FIXME Don't attempt to deactivate known internal dependencies. | |
1375 | */ | |
1376 | static int _dm_tree_deactivate_children(struct dm_tree_node *dnode, | |
1377 | const char *uuid_prefix, | |
1378 | size_t uuid_prefix_len, | |
1379 | unsigned level) | |
3e8c6b73 | 1380 | { |
b7eb2ad0 | 1381 | int r = 1; |
3e8c6b73 | 1382 | void *handle = NULL; |
b4f1578f | 1383 | struct dm_tree_node *child = dnode; |
3e8c6b73 AK |
1384 | struct dm_info info; |
1385 | const struct dm_info *dinfo; | |
1386 | const char *name; | |
1387 | const char *uuid; | |
1388 | ||
b4f1578f AK |
1389 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1390 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
3e8c6b73 AK |
1391 | stack; |
1392 | continue; | |
1393 | } | |
1394 | ||
b4f1578f | 1395 | if (!(name = dm_tree_node_get_name(child))) { |
3e8c6b73 AK |
1396 | stack; |
1397 | continue; | |
1398 | } | |
1399 | ||
b4f1578f | 1400 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
3e8c6b73 AK |
1401 | stack; |
1402 | continue; | |
1403 | } | |
1404 | ||
1405 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1406 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
3e8c6b73 | 1407 | continue; |
3e8c6b73 AK |
1408 | |
1409 | /* Refresh open_count */ | |
db208f51 | 1410 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) || |
f55021f4 | 1411 | !info.exists) |
3e8c6b73 AK |
1412 | continue; |
1413 | ||
4ce43894 ZK |
1414 | if (info.open_count) { |
1415 | /* Skip internal non-toplevel opened nodes */ | |
1416 | if (level) | |
1417 | continue; | |
1418 | ||
1419 | /* When retry is not allowed, error */ | |
1420 | if (!child->dtree->retry_remove) { | |
1421 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1422 | ":%" PRIu32 ")", name, info.major, info.minor); | |
1423 | r = 0; | |
1424 | continue; | |
1425 | } | |
1426 | ||
1427 | /* Check toplevel node for holders/mounted fs */ | |
1428 | if (!_check_device_not_in_use(name, &info)) { | |
1429 | stack; | |
1430 | r = 0; | |
1431 | continue; | |
1432 | } | |
1433 | /* Go on with retry */ | |
1434 | } | |
125712be | 1435 | |
f3ef15ef | 1436 | /* Also checking open_count in parent nodes of presuspend_node */ |
125712be | 1437 | if ((child->presuspend_node && |
f3ef15ef ZK |
1438 | !_node_has_closed_parents(child->presuspend_node, |
1439 | uuid_prefix, uuid_prefix_len))) { | |
18e0f934 AK |
1440 | /* Only report error from (likely non-internal) dependency at top level */ |
1441 | if (!level) { | |
1442 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1443 | ":%" PRIu32 ")", name, info.major, | |
1444 | info.minor); | |
1445 | r = 0; | |
1446 | } | |
f55021f4 AK |
1447 | continue; |
1448 | } | |
1449 | ||
76d1aec8 ZK |
1450 | /* Suspend child node first if requested */ |
1451 | if (child->presuspend_node && | |
1452 | !dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) | |
1453 | continue; | |
1454 | ||
f16aea9e | 1455 | if (!_deactivate_node(name, info.major, info.minor, |
787200ef | 1456 | &child->dtree->cookie, child->udev_flags, |
4ce43894 | 1457 | (level == 0) ? child->dtree->retry_remove : 0)) { |
3e8c6b73 AK |
1458 | log_error("Unable to deactivate %s (%" PRIu32 |
1459 | ":%" PRIu32 ")", name, info.major, | |
1460 | info.minor); | |
b7eb2ad0 | 1461 | r = 0; |
3e8c6b73 | 1462 | continue; |
f4249251 AK |
1463 | } else if (info.suspended) |
1464 | dec_suspended(); | |
3e8c6b73 | 1465 | |
18e0f934 AK |
1466 | if (dm_tree_node_num_children(child, 0)) { |
1467 | if (!_dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len, level + 1)) | |
b7eb2ad0 | 1468 | return_0; |
18e0f934 | 1469 | } |
3e8c6b73 AK |
1470 | } |
1471 | ||
b7eb2ad0 | 1472 | return r; |
3e8c6b73 | 1473 | } |
db208f51 | 1474 | |
18e0f934 AK |
1475 | int dm_tree_deactivate_children(struct dm_tree_node *dnode, |
1476 | const char *uuid_prefix, | |
1477 | size_t uuid_prefix_len) | |
1478 | { | |
1479 | return _dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len, 0); | |
1480 | } | |
1481 | ||
c55b1410 AK |
1482 | void dm_tree_skip_lockfs(struct dm_tree_node *dnode) |
1483 | { | |
1484 | dnode->dtree->skip_lockfs = 1; | |
1485 | } | |
1486 | ||
b9ffd32c AK |
1487 | void dm_tree_use_no_flush_suspend(struct dm_tree_node *dnode) |
1488 | { | |
1489 | dnode->dtree->no_flush = 1; | |
1490 | } | |
1491 | ||
787200ef PR |
1492 | void dm_tree_retry_remove(struct dm_tree_node *dnode) |
1493 | { | |
1494 | dnode->dtree->retry_remove = 1; | |
1495 | } | |
1496 | ||
b4f1578f | 1497 | int dm_tree_suspend_children(struct dm_tree_node *dnode, |
08e64ce5 ZK |
1498 | const char *uuid_prefix, |
1499 | size_t uuid_prefix_len) | |
db208f51 | 1500 | { |
68085c93 | 1501 | int r = 1; |
db208f51 | 1502 | void *handle = NULL; |
b4f1578f | 1503 | struct dm_tree_node *child = dnode; |
db208f51 AK |
1504 | struct dm_info info, newinfo; |
1505 | const struct dm_info *dinfo; | |
1506 | const char *name; | |
1507 | const char *uuid; | |
1508 | ||
690a5da2 | 1509 | /* Suspend nodes at this level of the tree */ |
b4f1578f AK |
1510 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1511 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
db208f51 AK |
1512 | stack; |
1513 | continue; | |
1514 | } | |
1515 | ||
b4f1578f | 1516 | if (!(name = dm_tree_node_get_name(child))) { |
db208f51 AK |
1517 | stack; |
1518 | continue; | |
1519 | } | |
1520 | ||
b4f1578f | 1521 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
db208f51 AK |
1522 | stack; |
1523 | continue; | |
1524 | } | |
1525 | ||
1526 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1527 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
db208f51 AK |
1528 | continue; |
1529 | ||
690a5da2 AK |
1530 | /* Ensure immediate parents are already suspended */ |
1531 | if (!_children_suspended(child, 1, uuid_prefix, uuid_prefix_len)) | |
1532 | continue; | |
1533 | ||
db208f51 | 1534 | if (!_info_by_dev(dinfo->major, dinfo->minor, 0, &info) || |
b700541f | 1535 | !info.exists || info.suspended) |
db208f51 AK |
1536 | continue; |
1537 | ||
c55b1410 | 1538 | if (!_suspend_node(name, info.major, info.minor, |
b9ffd32c AK |
1539 | child->dtree->skip_lockfs, |
1540 | child->dtree->no_flush, &newinfo)) { | |
db208f51 AK |
1541 | log_error("Unable to suspend %s (%" PRIu32 |
1542 | ":%" PRIu32 ")", name, info.major, | |
1543 | info.minor); | |
68085c93 | 1544 | r = 0; |
db208f51 AK |
1545 | continue; |
1546 | } | |
1547 | ||
1548 | /* Update cached info */ | |
1549 | child->info = newinfo; | |
690a5da2 AK |
1550 | } |
1551 | ||
1552 | /* Then suspend any child nodes */ | |
1553 | handle = NULL; | |
1554 | ||
b4f1578f AK |
1555 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1556 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
690a5da2 AK |
1557 | stack; |
1558 | continue; | |
1559 | } | |
1560 | ||
1561 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 | 1562 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 | 1563 | continue; |
db208f51 | 1564 | |
b4f1578f | 1565 | if (dm_tree_node_num_children(child, 0)) |
68085c93 MS |
1566 | if (!dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) |
1567 | return_0; | |
db208f51 AK |
1568 | } |
1569 | ||
68085c93 | 1570 | return r; |
db208f51 AK |
1571 | } |
1572 | ||
b4f1578f | 1573 | int dm_tree_activate_children(struct dm_tree_node *dnode, |
db208f51 AK |
1574 | const char *uuid_prefix, |
1575 | size_t uuid_prefix_len) | |
1576 | { | |
2ca6b865 | 1577 | int r = 1; |
db208f51 | 1578 | void *handle = NULL; |
b4f1578f | 1579 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
1580 | struct dm_info newinfo; |
1581 | const char *name; | |
db208f51 | 1582 | const char *uuid; |
56c28292 | 1583 | int priority; |
db208f51 | 1584 | |
165e4a11 | 1585 | /* Activate children first */ |
b4f1578f AK |
1586 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1587 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
165e4a11 AK |
1588 | stack; |
1589 | continue; | |
db208f51 AK |
1590 | } |
1591 | ||
908db078 AK |
1592 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1593 | continue; | |
db208f51 | 1594 | |
b4f1578f | 1595 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
1596 | if (!dm_tree_activate_children(child, uuid_prefix, uuid_prefix_len)) |
1597 | return_0; | |
56c28292 | 1598 | } |
165e4a11 | 1599 | |
56c28292 | 1600 | handle = NULL; |
165e4a11 | 1601 | |
aa6f4e51 | 1602 | for (priority = 0; priority < 3; priority++) { |
56c28292 | 1603 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
a5a31ce9 ZK |
1604 | if (priority != child->activation_priority) |
1605 | continue; | |
1606 | ||
56c28292 AK |
1607 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
1608 | stack; | |
1609 | continue; | |
165e4a11 | 1610 | } |
165e4a11 | 1611 | |
56c28292 AK |
1612 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1613 | continue; | |
165e4a11 | 1614 | |
56c28292 AK |
1615 | if (!(name = dm_tree_node_get_name(child))) { |
1616 | stack; | |
1617 | continue; | |
1618 | } | |
1619 | ||
1620 | /* Rename? */ | |
1621 | if (child->props.new_name) { | |
bd90c6b2 | 1622 | if (!_rename_node(name, child->props.new_name, child->info.major, |
f16aea9e PR |
1623 | child->info.minor, &child->dtree->cookie, |
1624 | child->udev_flags)) { | |
56c28292 AK |
1625 | log_error("Failed to rename %s (%" PRIu32 |
1626 | ":%" PRIu32 ") to %s", name, child->info.major, | |
1627 | child->info.minor, child->props.new_name); | |
1628 | return 0; | |
1629 | } | |
1630 | child->name = child->props.new_name; | |
1631 | child->props.new_name = NULL; | |
1632 | } | |
1633 | ||
1634 | if (!child->info.inactive_table && !child->info.suspended) | |
1635 | continue; | |
1636 | ||
bafa2f39 | 1637 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 1638 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 | 1639 | &newinfo, &child->dtree->cookie, child->udev_flags, child->info.suspended)) { |
56c28292 | 1640 | log_error("Unable to resume %s (%" PRIu32 |
bafa2f39 | 1641 | ":%" PRIu32 ")", child->name, child->info.major, |
56c28292 | 1642 | child->info.minor); |
2ca6b865 | 1643 | r = 0; |
56c28292 AK |
1644 | continue; |
1645 | } | |
1646 | ||
1647 | /* Update cached info */ | |
1648 | child->info = newinfo; | |
1649 | } | |
db208f51 AK |
1650 | } |
1651 | ||
165e4a11 AK |
1652 | handle = NULL; |
1653 | ||
2ca6b865 | 1654 | return r; |
165e4a11 AK |
1655 | } |
1656 | ||
b4f1578f | 1657 | static int _create_node(struct dm_tree_node *dnode) |
165e4a11 AK |
1658 | { |
1659 | int r = 0; | |
1660 | struct dm_task *dmt; | |
1661 | ||
1662 | log_verbose("Creating %s", dnode->name); | |
1663 | ||
1664 | if (!(dmt = dm_task_create(DM_DEVICE_CREATE))) { | |
1665 | log_error("Create dm_task creation failed for %s", dnode->name); | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | if (!dm_task_set_name(dmt, dnode->name)) { | |
1670 | log_error("Failed to set device name for %s", dnode->name); | |
1671 | goto out; | |
1672 | } | |
1673 | ||
1674 | if (!dm_task_set_uuid(dmt, dnode->uuid)) { | |
1675 | log_error("Failed to set uuid for %s", dnode->name); | |
1676 | goto out; | |
1677 | } | |
1678 | ||
1679 | if (dnode->props.major && | |
1680 | (!dm_task_set_major(dmt, dnode->props.major) || | |
1681 | !dm_task_set_minor(dmt, dnode->props.minor))) { | |
1682 | log_error("Failed to set device number for %s creation.", dnode->name); | |
1683 | goto out; | |
1684 | } | |
1685 | ||
1686 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
1687 | log_error("Failed to set read only flag for %s", dnode->name); | |
1688 | goto out; | |
1689 | } | |
1690 | ||
1691 | if (!dm_task_no_open_count(dmt)) | |
1692 | log_error("Failed to disable open_count"); | |
1693 | ||
1694 | if ((r = dm_task_run(dmt))) | |
1695 | r = dm_task_get_info(dmt, &dnode->info); | |
1696 | ||
1697 | out: | |
1698 | dm_task_destroy(dmt); | |
1699 | ||
1700 | return r; | |
1701 | } | |
1702 | ||
1703 | ||
b4f1578f | 1704 | static int _build_dev_string(char *devbuf, size_t bufsize, struct dm_tree_node *node) |
165e4a11 AK |
1705 | { |
1706 | if (!dm_format_dev(devbuf, bufsize, node->info.major, node->info.minor)) { | |
40e5fd8b AK |
1707 | log_error("Failed to format %s device number for %s as dm " |
1708 | "target (%u,%u)", | |
1709 | node->name, node->uuid, node->info.major, node->info.minor); | |
1710 | return 0; | |
165e4a11 AK |
1711 | } |
1712 | ||
1713 | return 1; | |
1714 | } | |
1715 | ||
ffa9b6a5 ZK |
1716 | /* simplify string emiting code */ |
1717 | #define EMIT_PARAMS(p, str...)\ | |
7b6c011c AK |
1718 | do {\ |
1719 | int w;\ | |
1720 | if ((w = dm_snprintf(params + p, paramsize - (size_t) p, str)) < 0) {\ | |
1721 | stack; /* Out of space */\ | |
1722 | return -1;\ | |
1723 | }\ | |
1724 | p += w;\ | |
1725 | } while (0) | |
ffa9b6a5 | 1726 | |
3c74075f JEB |
1727 | /* |
1728 | * _emit_areas_line | |
1729 | * | |
1730 | * Returns: 1 on success, 0 on failure | |
1731 | */ | |
08f1ddea | 1732 | static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)), |
4dcaa230 AK |
1733 | struct load_segment *seg, char *params, |
1734 | size_t paramsize, int *pos) | |
165e4a11 AK |
1735 | { |
1736 | struct seg_area *area; | |
7d7d93ac | 1737 | char devbuf[DM_FORMAT_DEV_BUFSIZE]; |
609faae9 | 1738 | unsigned first_time = 1; |
db3c1ac1 | 1739 | const char *logtype, *synctype; |
b262f3e1 | 1740 | unsigned log_parm_count; |
165e4a11 | 1741 | |
2c44337b | 1742 | dm_list_iterate_items(area, &seg->areas) { |
b262f3e1 ZK |
1743 | switch (seg->type) { |
1744 | case SEG_REPLICATOR_DEV: | |
6d04311e JEB |
1745 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1746 | return_0; | |
1747 | ||
b262f3e1 ZK |
1748 | EMIT_PARAMS(*pos, " %d 1 %s", area->rsite_index, devbuf); |
1749 | if (first_time) | |
1750 | EMIT_PARAMS(*pos, " nolog 0"); | |
1751 | else { | |
1752 | /* Remote devices */ | |
1753 | log_parm_count = (area->flags & | |
1754 | (DM_NOSYNC | DM_FORCESYNC)) ? 2 : 1; | |
1755 | ||
1756 | if (!area->slog) { | |
1757 | devbuf[0] = 0; /* Only core log parameters */ | |
1758 | logtype = "core"; | |
1759 | } else { | |
1760 | devbuf[0] = ' '; /* Extra space before device name */ | |
1761 | if (!_build_dev_string(devbuf + 1, | |
1762 | sizeof(devbuf) - 1, | |
1763 | area->slog)) | |
1764 | return_0; | |
1765 | logtype = "disk"; | |
1766 | log_parm_count++; /* Extra sync log device name parameter */ | |
1767 | } | |
1768 | ||
1769 | EMIT_PARAMS(*pos, " %s %u%s %" PRIu64, logtype, | |
1770 | log_parm_count, devbuf, area->region_size); | |
1771 | ||
db3c1ac1 AK |
1772 | synctype = (area->flags & DM_NOSYNC) ? |
1773 | " nosync" : (area->flags & DM_FORCESYNC) ? | |
1774 | " sync" : NULL; | |
b262f3e1 | 1775 | |
db3c1ac1 AK |
1776 | if (synctype) |
1777 | EMIT_PARAMS(*pos, "%s", synctype); | |
b262f3e1 ZK |
1778 | } |
1779 | break; | |
cac52ca4 JEB |
1780 | case SEG_RAID1: |
1781 | case SEG_RAID4: | |
1782 | case SEG_RAID5_LA: | |
1783 | case SEG_RAID5_RA: | |
1784 | case SEG_RAID5_LS: | |
1785 | case SEG_RAID5_RS: | |
1786 | case SEG_RAID6_ZR: | |
1787 | case SEG_RAID6_NR: | |
1788 | case SEG_RAID6_NC: | |
6d04311e JEB |
1789 | if (!area->dev_node) { |
1790 | EMIT_PARAMS(*pos, " -"); | |
1791 | break; | |
1792 | } | |
1793 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) | |
1794 | return_0; | |
1795 | ||
cac52ca4 JEB |
1796 | EMIT_PARAMS(*pos, " %s", devbuf); |
1797 | break; | |
b262f3e1 | 1798 | default: |
6d04311e JEB |
1799 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1800 | return_0; | |
1801 | ||
b262f3e1 ZK |
1802 | EMIT_PARAMS(*pos, "%s%s %" PRIu64, first_time ? "" : " ", |
1803 | devbuf, area->offset); | |
1804 | } | |
609faae9 AK |
1805 | |
1806 | first_time = 0; | |
165e4a11 AK |
1807 | } |
1808 | ||
1809 | return 1; | |
1810 | } | |
1811 | ||
b262f3e1 ZK |
1812 | static int _replicator_emit_segment_line(const struct load_segment *seg, char *params, |
1813 | size_t paramsize, int *pos) | |
1814 | { | |
1815 | const struct load_segment *rlog_seg; | |
1816 | struct replicator_site *rsite; | |
1817 | char rlogbuf[DM_FORMAT_DEV_BUFSIZE]; | |
1818 | unsigned parm_count; | |
1819 | ||
1820 | if (!seg->log || !_build_dev_string(rlogbuf, sizeof(rlogbuf), seg->log)) | |
1821 | return_0; | |
1822 | ||
1823 | rlog_seg = dm_list_item(dm_list_last(&seg->log->props.segs), | |
1824 | struct load_segment); | |
1825 | ||
1826 | EMIT_PARAMS(*pos, "%s 4 %s 0 auto %" PRIu64, | |
1827 | seg->rlog_type, rlogbuf, rlog_seg->size); | |
1828 | ||
1829 | dm_list_iterate_items(rsite, &seg->rsites) { | |
1830 | parm_count = (rsite->fall_behind_data | |
1831 | || rsite->fall_behind_ios | |
1832 | || rsite->async_timeout) ? 4 : 2; | |
1833 | ||
1834 | EMIT_PARAMS(*pos, " blockdev %u %u %s", parm_count, rsite->rsite_index, | |
1835 | (rsite->mode == DM_REPLICATOR_SYNC) ? "synchronous" : "asynchronous"); | |
1836 | ||
1837 | if (rsite->fall_behind_data) | |
1838 | EMIT_PARAMS(*pos, " data %" PRIu64, rsite->fall_behind_data); | |
1839 | else if (rsite->fall_behind_ios) | |
1840 | EMIT_PARAMS(*pos, " ios %" PRIu32, rsite->fall_behind_ios); | |
1841 | else if (rsite->async_timeout) | |
1842 | EMIT_PARAMS(*pos, " timeout %" PRIu32, rsite->async_timeout); | |
1843 | } | |
1844 | ||
1845 | return 1; | |
1846 | } | |
1847 | ||
3c74075f | 1848 | /* |
3c74075f JEB |
1849 | * Returns: 1 on success, 0 on failure |
1850 | */ | |
beecb1e1 ZK |
1851 | static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *seg, |
1852 | char *params, size_t paramsize) | |
165e4a11 | 1853 | { |
8f26e18c JEB |
1854 | int block_on_error = 0; |
1855 | int handle_errors = 0; | |
1856 | int dm_log_userspace = 0; | |
1857 | struct utsname uts; | |
dbcb64b8 | 1858 | unsigned log_parm_count; |
b39fdcf4 | 1859 | int pos = 0, parts; |
7d7d93ac | 1860 | char logbuf[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 1861 | const char *logtype; |
b39fdcf4 | 1862 | unsigned kmaj = 0, kmin = 0, krel = 0; |
165e4a11 | 1863 | |
b39fdcf4 MB |
1864 | if (uname(&uts) == -1) { |
1865 | log_error("Cannot read kernel release version."); | |
1866 | return 0; | |
1867 | } | |
1868 | ||
1869 | /* Kernels with a major number of 2 always had 3 parts. */ | |
1870 | parts = sscanf(uts.release, "%u.%u.%u", &kmaj, &kmin, &krel); | |
1871 | if (parts < 1 || (kmaj < 3 && parts < 3)) { | |
1872 | log_error("Wrong kernel release version %s.", uts.release); | |
30a65310 ZK |
1873 | return 0; |
1874 | } | |
67b25ed4 | 1875 | |
8f26e18c JEB |
1876 | if ((seg->flags & DM_BLOCK_ON_ERROR)) { |
1877 | /* | |
1878 | * Originally, block_on_error was an argument to the log | |
1879 | * portion of the mirror CTR table. It was renamed to | |
1880 | * "handle_errors" and now resides in the 'features' | |
1881 | * section of the mirror CTR table (i.e. at the end). | |
1882 | * | |
1883 | * We can identify whether to use "block_on_error" or | |
1884 | * "handle_errors" by the dm-mirror module's version | |
1885 | * number (>= 1.12) or by the kernel version (>= 2.6.22). | |
1886 | */ | |
ba61f848 | 1887 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 22)) |
8f26e18c JEB |
1888 | handle_errors = 1; |
1889 | else | |
1890 | block_on_error = 1; | |
1891 | } | |
1892 | ||
1893 | if (seg->clustered) { | |
1894 | /* Cluster mirrors require a UUID */ | |
1895 | if (!seg->uuid) | |
1896 | return_0; | |
1897 | ||
1898 | /* | |
1899 | * Cluster mirrors used to have their own log | |
1900 | * types. Now they are accessed through the | |
1901 | * userspace log type. | |
1902 | * | |
1903 | * The dm-log-userspace module was added to the | |
1904 | * 2.6.31 kernel. | |
1905 | */ | |
ba61f848 | 1906 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 31)) |
8f26e18c JEB |
1907 | dm_log_userspace = 1; |
1908 | } | |
1909 | ||
1910 | /* Region size */ | |
1911 | log_parm_count = 1; | |
1912 | ||
1913 | /* [no]sync, block_on_error etc. */ | |
1914 | log_parm_count += hweight32(seg->flags); | |
311d6d81 | 1915 | |
8f26e18c JEB |
1916 | /* "handle_errors" is a feature arg now */ |
1917 | if (handle_errors) | |
1918 | log_parm_count--; | |
1919 | ||
1920 | /* DM_CORELOG does not count in the param list */ | |
1921 | if (seg->flags & DM_CORELOG) | |
1922 | log_parm_count--; | |
1923 | ||
1924 | if (seg->clustered) { | |
1925 | log_parm_count++; /* For UUID */ | |
1926 | ||
1927 | if (!dm_log_userspace) | |
ffa9b6a5 | 1928 | EMIT_PARAMS(pos, "clustered-"); |
49b95a5e JEB |
1929 | else |
1930 | /* For clustered-* type field inserted later */ | |
1931 | log_parm_count++; | |
8f26e18c | 1932 | } |
dbcb64b8 | 1933 | |
8f26e18c JEB |
1934 | if (!seg->log) |
1935 | logtype = "core"; | |
1936 | else { | |
1937 | logtype = "disk"; | |
1938 | log_parm_count++; | |
1939 | if (!_build_dev_string(logbuf, sizeof(logbuf), seg->log)) | |
1940 | return_0; | |
1941 | } | |
dbcb64b8 | 1942 | |
8f26e18c JEB |
1943 | if (dm_log_userspace) |
1944 | EMIT_PARAMS(pos, "userspace %u %s clustered-%s", | |
1945 | log_parm_count, seg->uuid, logtype); | |
1946 | else | |
ffa9b6a5 | 1947 | EMIT_PARAMS(pos, "%s %u", logtype, log_parm_count); |
dbcb64b8 | 1948 | |
8f26e18c JEB |
1949 | if (seg->log) |
1950 | EMIT_PARAMS(pos, " %s", logbuf); | |
1951 | ||
1952 | EMIT_PARAMS(pos, " %u", seg->region_size); | |
dbcb64b8 | 1953 | |
8f26e18c JEB |
1954 | if (seg->clustered && !dm_log_userspace) |
1955 | EMIT_PARAMS(pos, " %s", seg->uuid); | |
67b25ed4 | 1956 | |
8f26e18c JEB |
1957 | if ((seg->flags & DM_NOSYNC)) |
1958 | EMIT_PARAMS(pos, " nosync"); | |
1959 | else if ((seg->flags & DM_FORCESYNC)) | |
1960 | EMIT_PARAMS(pos, " sync"); | |
dbcb64b8 | 1961 | |
8f26e18c JEB |
1962 | if (block_on_error) |
1963 | EMIT_PARAMS(pos, " block_on_error"); | |
1964 | ||
1965 | EMIT_PARAMS(pos, " %u ", seg->mirror_area_count); | |
1966 | ||
5f3325fc | 1967 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) |
3c74075f | 1968 | return_0; |
dbcb64b8 | 1969 | |
8f26e18c JEB |
1970 | if (handle_errors) |
1971 | EMIT_PARAMS(pos, " 1 handle_errors"); | |
ffa9b6a5 | 1972 | |
3c74075f | 1973 | return 1; |
8f26e18c JEB |
1974 | } |
1975 | ||
cac52ca4 JEB |
1976 | static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, |
1977 | uint32_t minor, struct load_segment *seg, | |
1978 | uint64_t *seg_start, char *params, | |
1979 | size_t paramsize) | |
1980 | { | |
ad2432dc | 1981 | uint32_t i; |
cac52ca4 JEB |
1982 | int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */ |
1983 | int pos = 0; | |
1984 | ||
1985 | if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC)) | |
1986 | param_count++; | |
1987 | ||
1988 | if (seg->region_size) | |
1989 | param_count += 2; | |
1990 | ||
ad2432dc MB |
1991 | /* rebuilds is 64-bit */ |
1992 | param_count += 2 * hweight32(seg->rebuilds & 0xFFFFFFFF); | |
1993 | param_count += 2 * hweight32(seg->rebuilds >> 32); | |
f439e65b | 1994 | |
cac52ca4 JEB |
1995 | if ((seg->type == SEG_RAID1) && seg->stripe_size) |
1996 | log_error("WARNING: Ignoring RAID1 stripe size"); | |
1997 | ||
1998 | EMIT_PARAMS(pos, "%s %d %u", dm_segtypes[seg->type].target, | |
1999 | param_count, seg->stripe_size); | |
2000 | ||
2001 | if (seg->flags & DM_NOSYNC) | |
2002 | EMIT_PARAMS(pos, " nosync"); | |
2003 | else if (seg->flags & DM_FORCESYNC) | |
2004 | EMIT_PARAMS(pos, " sync"); | |
2005 | ||
2006 | if (seg->region_size) | |
2007 | EMIT_PARAMS(pos, " region_size %u", seg->region_size); | |
2008 | ||
f439e65b JEB |
2009 | for (i = 0; i < (seg->area_count / 2); i++) |
2010 | if (seg->rebuilds & (1 << i)) | |
2011 | EMIT_PARAMS(pos, " rebuild %u", i); | |
2012 | ||
cac52ca4 JEB |
2013 | /* Print number of metadata/data device pairs */ |
2014 | EMIT_PARAMS(pos, " %u", seg->area_count/2); | |
2015 | ||
2016 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) | |
2017 | return_0; | |
2018 | ||
2019 | return 1; | |
2020 | } | |
2021 | ||
8f26e18c JEB |
2022 | static int _emit_segment_line(struct dm_task *dmt, uint32_t major, |
2023 | uint32_t minor, struct load_segment *seg, | |
2024 | uint64_t *seg_start, char *params, | |
2025 | size_t paramsize) | |
2026 | { | |
2027 | int pos = 0; | |
2028 | int r; | |
cac52ca4 | 2029 | int target_type_is_raid = 0; |
8f26e18c | 2030 | char originbuf[DM_FORMAT_DEV_BUFSIZE], cowbuf[DM_FORMAT_DEV_BUFSIZE]; |
4251236e | 2031 | char pool[DM_FORMAT_DEV_BUFSIZE], metadata[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 2032 | |
8f26e18c JEB |
2033 | switch(seg->type) { |
2034 | case SEG_ERROR: | |
2035 | case SEG_ZERO: | |
2036 | case SEG_LINEAR: | |
2037 | break; | |
2038 | case SEG_MIRRORED: | |
2039 | /* Mirrors are pretty complicated - now in separate function */ | |
beecb1e1 | 2040 | r = _mirror_emit_segment_line(dmt, seg, params, paramsize); |
3c74075f JEB |
2041 | if (!r) |
2042 | return_0; | |
165e4a11 | 2043 | break; |
b262f3e1 ZK |
2044 | case SEG_REPLICATOR: |
2045 | if ((r = _replicator_emit_segment_line(seg, params, paramsize, | |
2046 | &pos)) <= 0) { | |
2047 | stack; | |
2048 | return r; | |
2049 | } | |
2050 | break; | |
2051 | case SEG_REPLICATOR_DEV: | |
2052 | if (!seg->replicator || !_build_dev_string(originbuf, | |
2053 | sizeof(originbuf), | |
2054 | seg->replicator)) | |
2055 | return_0; | |
2056 | ||
2057 | EMIT_PARAMS(pos, "%s %" PRIu64, originbuf, seg->rdevice_index); | |
2058 | break; | |
165e4a11 | 2059 | case SEG_SNAPSHOT: |
aa6f4e51 | 2060 | case SEG_SNAPSHOT_MERGE: |
b4f1578f AK |
2061 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
2062 | return_0; | |
2063 | if (!_build_dev_string(cowbuf, sizeof(cowbuf), seg->cow)) | |
2064 | return_0; | |
ffa9b6a5 ZK |
2065 | EMIT_PARAMS(pos, "%s %s %c %d", originbuf, cowbuf, |
2066 | seg->persistent ? 'P' : 'N', seg->chunk_size); | |
165e4a11 AK |
2067 | break; |
2068 | case SEG_SNAPSHOT_ORIGIN: | |
b4f1578f AK |
2069 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
2070 | return_0; | |
ffa9b6a5 | 2071 | EMIT_PARAMS(pos, "%s", originbuf); |
165e4a11 AK |
2072 | break; |
2073 | case SEG_STRIPED: | |
609faae9 | 2074 | EMIT_PARAMS(pos, "%u %u ", seg->area_count, seg->stripe_size); |
165e4a11 | 2075 | break; |
12ca060e | 2076 | case SEG_CRYPT: |
609faae9 | 2077 | EMIT_PARAMS(pos, "%s%s%s%s%s %s %" PRIu64 " ", seg->cipher, |
12ca060e MB |
2078 | seg->chainmode ? "-" : "", seg->chainmode ?: "", |
2079 | seg->iv ? "-" : "", seg->iv ?: "", seg->key, | |
2080 | seg->iv_offset != DM_CRYPT_IV_DEFAULT ? | |
2081 | seg->iv_offset : *seg_start); | |
2082 | break; | |
cac52ca4 JEB |
2083 | case SEG_RAID1: |
2084 | case SEG_RAID4: | |
2085 | case SEG_RAID5_LA: | |
2086 | case SEG_RAID5_RA: | |
2087 | case SEG_RAID5_LS: | |
2088 | case SEG_RAID5_RS: | |
2089 | case SEG_RAID6_ZR: | |
2090 | case SEG_RAID6_NR: | |
2091 | case SEG_RAID6_NC: | |
2092 | target_type_is_raid = 1; | |
2093 | r = _raid_emit_segment_line(dmt, major, minor, seg, seg_start, | |
2094 | params, paramsize); | |
2095 | if (!r) | |
2096 | return_0; | |
2097 | ||
2098 | break; | |
4251236e ZK |
2099 | case SEG_THIN_POOL: |
2100 | if (!_build_dev_string(metadata, sizeof(metadata), seg->metadata)) | |
2101 | return_0; | |
2102 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
2103 | return_0; | |
2104 | EMIT_PARAMS(pos, "%s %s %d %" PRIu64 " %s", metadata, pool, | |
e9156c2b | 2105 | seg->data_block_size, seg->low_water_mark, |
ac08d9c0 | 2106 | seg->skip_block_zeroing ? "1 skip_block_zeroing" : "0"); |
4251236e ZK |
2107 | break; |
2108 | case SEG_THIN: | |
2109 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
2110 | return_0; | |
2111 | EMIT_PARAMS(pos, "%s %d", pool, seg->device_id); | |
2112 | break; | |
165e4a11 AK |
2113 | } |
2114 | ||
2115 | switch(seg->type) { | |
2116 | case SEG_ERROR: | |
b262f3e1 | 2117 | case SEG_REPLICATOR: |
165e4a11 AK |
2118 | case SEG_SNAPSHOT: |
2119 | case SEG_SNAPSHOT_ORIGIN: | |
aa6f4e51 | 2120 | case SEG_SNAPSHOT_MERGE: |
165e4a11 | 2121 | case SEG_ZERO: |
4251236e ZK |
2122 | case SEG_THIN_POOL: |
2123 | case SEG_THIN: | |
165e4a11 | 2124 | break; |
12ca060e | 2125 | case SEG_CRYPT: |
165e4a11 | 2126 | case SEG_LINEAR: |
b262f3e1 | 2127 | case SEG_REPLICATOR_DEV: |
165e4a11 AK |
2128 | case SEG_STRIPED: |
2129 | if ((r = _emit_areas_line(dmt, seg, params, paramsize, &pos)) <= 0) { | |
2130 | stack; | |
2131 | return r; | |
2132 | } | |
b6793963 AK |
2133 | if (!params[0]) { |
2134 | log_error("No parameters supplied for %s target " | |
2135 | "%u:%u.", dm_segtypes[seg->type].target, | |
812e10ac | 2136 | major, minor); |
b6793963 AK |
2137 | return 0; |
2138 | } | |
165e4a11 AK |
2139 | break; |
2140 | } | |
2141 | ||
4b2cae46 AK |
2142 | log_debug("Adding target to (%" PRIu32 ":%" PRIu32 "): %" PRIu64 |
2143 | " %" PRIu64 " %s %s", major, minor, | |
f439e65b JEB |
2144 | *seg_start, seg->size, target_type_is_raid ? "raid" : |
2145 | dm_segtypes[seg->type].target, params); | |
165e4a11 | 2146 | |
cac52ca4 JEB |
2147 | if (!dm_task_add_target(dmt, *seg_start, seg->size, |
2148 | target_type_is_raid ? "raid" : | |
2149 | dm_segtypes[seg->type].target, params)) | |
b4f1578f | 2150 | return_0; |
165e4a11 AK |
2151 | |
2152 | *seg_start += seg->size; | |
2153 | ||
2154 | return 1; | |
2155 | } | |
2156 | ||
ffa9b6a5 ZK |
2157 | #undef EMIT_PARAMS |
2158 | ||
4b2cae46 AK |
2159 | static int _emit_segment(struct dm_task *dmt, uint32_t major, uint32_t minor, |
2160 | struct load_segment *seg, uint64_t *seg_start) | |
165e4a11 AK |
2161 | { |
2162 | char *params; | |
2163 | size_t paramsize = 4096; | |
2164 | int ret; | |
2165 | ||
2166 | do { | |
2167 | if (!(params = dm_malloc(paramsize))) { | |
2168 | log_error("Insufficient space for target parameters."); | |
2169 | return 0; | |
2170 | } | |
2171 | ||
12ea7cb1 | 2172 | params[0] = '\0'; |
4b2cae46 AK |
2173 | ret = _emit_segment_line(dmt, major, minor, seg, seg_start, |
2174 | params, paramsize); | |
165e4a11 AK |
2175 | dm_free(params); |
2176 | ||
2177 | if (!ret) | |
2178 | stack; | |
2179 | ||
2180 | if (ret >= 0) | |
2181 | return ret; | |
2182 | ||
2183 | log_debug("Insufficient space in params[%" PRIsize_t | |
2184 | "] for target parameters.", paramsize); | |
2185 | ||
2186 | paramsize *= 2; | |
2187 | } while (paramsize < MAX_TARGET_PARAMSIZE); | |
2188 | ||
2189 | log_error("Target parameter size too big. Aborting."); | |
2190 | return 0; | |
2191 | } | |
2192 | ||
b4f1578f | 2193 | static int _load_node(struct dm_tree_node *dnode) |
165e4a11 AK |
2194 | { |
2195 | int r = 0; | |
2196 | struct dm_task *dmt; | |
2197 | struct load_segment *seg; | |
df390f17 | 2198 | uint64_t seg_start = 0, existing_table_size; |
165e4a11 | 2199 | |
4b2cae46 AK |
2200 | log_verbose("Loading %s table (%" PRIu32 ":%" PRIu32 ")", dnode->name, |
2201 | dnode->info.major, dnode->info.minor); | |
165e4a11 AK |
2202 | |
2203 | if (!(dmt = dm_task_create(DM_DEVICE_RELOAD))) { | |
2204 | log_error("Reload dm_task creation failed for %s", dnode->name); | |
2205 | return 0; | |
2206 | } | |
2207 | ||
2208 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
2209 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
2210 | log_error("Failed to set device number for %s reload.", dnode->name); | |
2211 | goto out; | |
2212 | } | |
2213 | ||
2214 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
2215 | log_error("Failed to set read only flag for %s", dnode->name); | |
2216 | goto out; | |
2217 | } | |
2218 | ||
2219 | if (!dm_task_no_open_count(dmt)) | |
2220 | log_error("Failed to disable open_count"); | |
2221 | ||
2c44337b | 2222 | dm_list_iterate_items(seg, &dnode->props.segs) |
4b2cae46 AK |
2223 | if (!_emit_segment(dmt, dnode->info.major, dnode->info.minor, |
2224 | seg, &seg_start)) | |
b4f1578f | 2225 | goto_out; |
165e4a11 | 2226 | |
ec289b64 AK |
2227 | if (!dm_task_suppress_identical_reload(dmt)) |
2228 | log_error("Failed to suppress reload of identical tables."); | |
2229 | ||
2230 | if ((r = dm_task_run(dmt))) { | |
165e4a11 | 2231 | r = dm_task_get_info(dmt, &dnode->info); |
ec289b64 AK |
2232 | if (r && !dnode->info.inactive_table) |
2233 | log_verbose("Suppressed %s identical table reload.", | |
2234 | dnode->name); | |
bb875bb9 | 2235 | |
df390f17 | 2236 | existing_table_size = dm_task_get_existing_table_size(dmt); |
bb875bb9 | 2237 | if ((dnode->props.size_changed = |
df390f17 | 2238 | (existing_table_size == seg_start) ? 0 : 1)) { |
bb875bb9 | 2239 | log_debug("Table size changed from %" PRIu64 " to %" |
df390f17 | 2240 | PRIu64 " for %s", existing_table_size, |
bb875bb9 | 2241 | seg_start, dnode->name); |
df390f17 AK |
2242 | /* |
2243 | * Kernel usually skips size validation on zero-length devices | |
2244 | * now so no need to preload them. | |
2245 | */ | |
2246 | /* FIXME In which kernel version did this begin? */ | |
2247 | if (!existing_table_size && dnode->props.delay_resume_if_new) | |
2248 | dnode->props.size_changed = 0; | |
2249 | } | |
ec289b64 | 2250 | } |
165e4a11 AK |
2251 | |
2252 | dnode->props.segment_count = 0; | |
2253 | ||
2254 | out: | |
2255 | dm_task_destroy(dmt); | |
2256 | ||
2257 | return r; | |
165e4a11 AK |
2258 | } |
2259 | ||
b4f1578f | 2260 | int dm_tree_preload_children(struct dm_tree_node *dnode, |
bb875bb9 AK |
2261 | const char *uuid_prefix, |
2262 | size_t uuid_prefix_len) | |
165e4a11 | 2263 | { |
2ca6b865 | 2264 | int r = 1; |
165e4a11 | 2265 | void *handle = NULL; |
b4f1578f | 2266 | struct dm_tree_node *child; |
165e4a11 | 2267 | struct dm_info newinfo; |
566515c0 | 2268 | int update_devs_flag = 0; |
165e4a11 AK |
2269 | |
2270 | /* Preload children first */ | |
b4f1578f | 2271 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
165e4a11 AK |
2272 | /* Skip existing non-device-mapper devices */ |
2273 | if (!child->info.exists && child->info.major) | |
2274 | continue; | |
2275 | ||
2276 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 AK |
2277 | if (child->info.exists && |
2278 | !_uuid_prefix_matches(child->uuid, uuid_prefix, uuid_prefix_len)) | |
165e4a11 AK |
2279 | continue; |
2280 | ||
b4f1578f | 2281 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
2282 | if (!dm_tree_preload_children(child, uuid_prefix, uuid_prefix_len)) |
2283 | return_0; | |
165e4a11 | 2284 | |
165e4a11 | 2285 | /* FIXME Cope if name exists with no uuid? */ |
3d6782b3 ZK |
2286 | if (!child->info.exists && !_create_node(child)) |
2287 | return_0; | |
165e4a11 | 2288 | |
3d6782b3 ZK |
2289 | if (!child->info.inactive_table && |
2290 | child->props.segment_count && | |
2291 | !_load_node(child)) | |
2292 | return_0; | |
165e4a11 | 2293 | |
eb91c4ee MB |
2294 | /* Propagate device size change change */ |
2295 | if (child->props.size_changed) | |
2296 | dnode->props.size_changed = 1; | |
2297 | ||
bb875bb9 | 2298 | /* Resume device immediately if it has parents and its size changed */ |
3776c494 | 2299 | if (!dm_tree_node_num_children(child, 1) || !child->props.size_changed) |
165e4a11 AK |
2300 | continue; |
2301 | ||
7707ea90 AK |
2302 | if (!child->info.inactive_table && !child->info.suspended) |
2303 | continue; | |
2304 | ||
fc795d87 | 2305 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 2306 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 AK |
2307 | &newinfo, &child->dtree->cookie, child->udev_flags, |
2308 | child->info.suspended)) { | |
165e4a11 | 2309 | log_error("Unable to resume %s (%" PRIu32 |
fc795d87 | 2310 | ":%" PRIu32 ")", child->name, child->info.major, |
165e4a11 | 2311 | child->info.minor); |
2ca6b865 | 2312 | r = 0; |
165e4a11 AK |
2313 | continue; |
2314 | } | |
2315 | ||
2316 | /* Update cached info */ | |
2317 | child->info = newinfo; | |
566515c0 PR |
2318 | |
2319 | /* | |
2320 | * Prepare for immediate synchronization with udev and flush all stacked | |
2321 | * dev node operations if requested by immediate_dev_node property. But | |
2322 | * finish processing current level in the tree first. | |
2323 | */ | |
2324 | if (child->props.immediate_dev_node) | |
2325 | update_devs_flag = 1; | |
165e4a11 AK |
2326 | } |
2327 | ||
2328 | handle = NULL; | |
2329 | ||
566515c0 PR |
2330 | if (update_devs_flag) { |
2331 | if (!dm_udev_wait(dm_tree_get_cookie(dnode))) | |
2332 | stack; | |
2333 | dm_tree_set_cookie(dnode, 0); | |
566515c0 PR |
2334 | } |
2335 | ||
11f64f0a | 2336 | if (r && !_node_send_messages(dnode, uuid_prefix, uuid_prefix_len)) { |
25e6ab87 ZK |
2337 | stack; |
2338 | if (!(dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len))) | |
2339 | log_error("Failed to deactivate %s", dnode->name); | |
2340 | r = 0; | |
2341 | } | |
2342 | ||
2ca6b865 | 2343 | return r; |
165e4a11 AK |
2344 | } |
2345 | ||
165e4a11 AK |
2346 | /* |
2347 | * Returns 1 if unsure. | |
2348 | */ | |
b4f1578f | 2349 | int dm_tree_children_use_uuid(struct dm_tree_node *dnode, |
165e4a11 AK |
2350 | const char *uuid_prefix, |
2351 | size_t uuid_prefix_len) | |
2352 | { | |
2353 | void *handle = NULL; | |
b4f1578f | 2354 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
2355 | const char *uuid; |
2356 | ||
b4f1578f AK |
2357 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
2358 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
2359 | log_error("Failed to get uuid for dtree node."); | |
165e4a11 AK |
2360 | return 1; |
2361 | } | |
2362 | ||
87f98002 | 2363 | if (_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
165e4a11 AK |
2364 | return 1; |
2365 | ||
b4f1578f AK |
2366 | if (dm_tree_node_num_children(child, 0)) |
2367 | dm_tree_children_use_uuid(child, uuid_prefix, uuid_prefix_len); | |
165e4a11 AK |
2368 | } |
2369 | ||
2370 | return 0; | |
2371 | } | |
2372 | ||
2373 | /* | |
2374 | * Target functions | |
2375 | */ | |
b4f1578f | 2376 | static struct load_segment *_add_segment(struct dm_tree_node *dnode, unsigned type, uint64_t size) |
165e4a11 AK |
2377 | { |
2378 | struct load_segment *seg; | |
2379 | ||
b4f1578f AK |
2380 | if (!(seg = dm_pool_zalloc(dnode->dtree->mem, sizeof(*seg)))) { |
2381 | log_error("dtree node segment allocation failed"); | |
165e4a11 AK |
2382 | return NULL; |
2383 | } | |
2384 | ||
2385 | seg->type = type; | |
2386 | seg->size = size; | |
2387 | seg->area_count = 0; | |
2c44337b | 2388 | dm_list_init(&seg->areas); |
165e4a11 AK |
2389 | seg->stripe_size = 0; |
2390 | seg->persistent = 0; | |
2391 | seg->chunk_size = 0; | |
2392 | seg->cow = NULL; | |
2393 | seg->origin = NULL; | |
aa6f4e51 | 2394 | seg->merge = NULL; |
165e4a11 | 2395 | |
2c44337b | 2396 | dm_list_add(&dnode->props.segs, &seg->list); |
165e4a11 AK |
2397 | dnode->props.segment_count++; |
2398 | ||
2399 | return seg; | |
2400 | } | |
2401 | ||
b4f1578f | 2402 | int dm_tree_node_add_snapshot_origin_target(struct dm_tree_node *dnode, |
40e5fd8b AK |
2403 | uint64_t size, |
2404 | const char *origin_uuid) | |
165e4a11 AK |
2405 | { |
2406 | struct load_segment *seg; | |
b4f1578f | 2407 | struct dm_tree_node *origin_node; |
165e4a11 | 2408 | |
b4f1578f AK |
2409 | if (!(seg = _add_segment(dnode, SEG_SNAPSHOT_ORIGIN, size))) |
2410 | return_0; | |
165e4a11 | 2411 | |
b4f1578f | 2412 | if (!(origin_node = dm_tree_find_node_by_uuid(dnode->dtree, origin_uuid))) { |
165e4a11 AK |
2413 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2414 | return 0; | |
2415 | } | |
2416 | ||
2417 | seg->origin = origin_node; | |
b4f1578f AK |
2418 | if (!_link_tree_nodes(dnode, origin_node)) |
2419 | return_0; | |
165e4a11 | 2420 | |
56c28292 AK |
2421 | /* Resume snapshot origins after new snapshots */ |
2422 | dnode->activation_priority = 1; | |
2423 | ||
165e4a11 AK |
2424 | return 1; |
2425 | } | |
2426 | ||
aa6f4e51 MS |
2427 | static int _add_snapshot_target(struct dm_tree_node *node, |
2428 | uint64_t size, | |
2429 | const char *origin_uuid, | |
2430 | const char *cow_uuid, | |
2431 | const char *merge_uuid, | |
2432 | int persistent, | |
2433 | uint32_t chunk_size) | |
165e4a11 AK |
2434 | { |
2435 | struct load_segment *seg; | |
aa6f4e51 MS |
2436 | struct dm_tree_node *origin_node, *cow_node, *merge_node; |
2437 | unsigned seg_type; | |
2438 | ||
2439 | seg_type = !merge_uuid ? SEG_SNAPSHOT : SEG_SNAPSHOT_MERGE; | |
165e4a11 | 2440 | |
aa6f4e51 | 2441 | if (!(seg = _add_segment(node, seg_type, size))) |
b4f1578f | 2442 | return_0; |
165e4a11 | 2443 | |
b4f1578f | 2444 | if (!(origin_node = dm_tree_find_node_by_uuid(node->dtree, origin_uuid))) { |
165e4a11 AK |
2445 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2446 | return 0; | |
2447 | } | |
2448 | ||
2449 | seg->origin = origin_node; | |
b4f1578f AK |
2450 | if (!_link_tree_nodes(node, origin_node)) |
2451 | return_0; | |
165e4a11 | 2452 | |
b4f1578f | 2453 | if (!(cow_node = dm_tree_find_node_by_uuid(node->dtree, cow_uuid))) { |
aa6f4e51 | 2454 | log_error("Couldn't find snapshot COW device uuid %s.", cow_uuid); |
165e4a11 AK |
2455 | return 0; |
2456 | } | |
2457 | ||
2458 | seg->cow = cow_node; | |
b4f1578f AK |
2459 | if (!_link_tree_nodes(node, cow_node)) |
2460 | return_0; | |
165e4a11 AK |
2461 | |
2462 | seg->persistent = persistent ? 1 : 0; | |
2463 | seg->chunk_size = chunk_size; | |
2464 | ||
aa6f4e51 MS |
2465 | if (merge_uuid) { |
2466 | if (!(merge_node = dm_tree_find_node_by_uuid(node->dtree, merge_uuid))) { | |
2467 | /* not a pure error, merging snapshot may have been deactivated */ | |
2468 | log_verbose("Couldn't find merging snapshot uuid %s.", merge_uuid); | |
2469 | } else { | |
2470 | seg->merge = merge_node; | |
2471 | /* must not link merging snapshot, would undermine activation_priority below */ | |
2472 | } | |
2473 | ||
2474 | /* Resume snapshot-merge (acting origin) after other snapshots */ | |
2475 | node->activation_priority = 1; | |
2476 | if (seg->merge) { | |
2477 | /* Resume merging snapshot after snapshot-merge */ | |
2478 | seg->merge->activation_priority = 2; | |
2479 | } | |
2480 | } | |
2481 | ||
165e4a11 AK |
2482 | return 1; |
2483 | } | |
2484 | ||
aa6f4e51 MS |
2485 | |
2486 | int dm_tree_node_add_snapshot_target(struct dm_tree_node *node, | |
2487 | uint64_t size, | |
2488 | const char *origin_uuid, | |
2489 | const char *cow_uuid, | |
2490 | int persistent, | |
2491 | uint32_t chunk_size) | |
2492 | { | |
2493 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2494 | NULL, persistent, chunk_size); | |
2495 | } | |
2496 | ||
2497 | int dm_tree_node_add_snapshot_merge_target(struct dm_tree_node *node, | |
2498 | uint64_t size, | |
2499 | const char *origin_uuid, | |
2500 | const char *cow_uuid, | |
2501 | const char *merge_uuid, | |
2502 | uint32_t chunk_size) | |
2503 | { | |
2504 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2505 | merge_uuid, 1, chunk_size); | |
2506 | } | |
2507 | ||
b4f1578f | 2508 | int dm_tree_node_add_error_target(struct dm_tree_node *node, |
40e5fd8b | 2509 | uint64_t size) |
165e4a11 | 2510 | { |
b4f1578f AK |
2511 | if (!_add_segment(node, SEG_ERROR, size)) |
2512 | return_0; | |
165e4a11 AK |
2513 | |
2514 | return 1; | |
2515 | } | |
2516 | ||
b4f1578f | 2517 | int dm_tree_node_add_zero_target(struct dm_tree_node *node, |
40e5fd8b | 2518 | uint64_t size) |
165e4a11 | 2519 | { |
b4f1578f AK |
2520 | if (!_add_segment(node, SEG_ZERO, size)) |
2521 | return_0; | |
165e4a11 AK |
2522 | |
2523 | return 1; | |
2524 | } | |
2525 | ||
b4f1578f | 2526 | int dm_tree_node_add_linear_target(struct dm_tree_node *node, |
40e5fd8b | 2527 | uint64_t size) |
165e4a11 | 2528 | { |
b4f1578f AK |
2529 | if (!_add_segment(node, SEG_LINEAR, size)) |
2530 | return_0; | |
165e4a11 AK |
2531 | |
2532 | return 1; | |
2533 | } | |
2534 | ||
b4f1578f | 2535 | int dm_tree_node_add_striped_target(struct dm_tree_node *node, |
40e5fd8b AK |
2536 | uint64_t size, |
2537 | uint32_t stripe_size) | |
165e4a11 AK |
2538 | { |
2539 | struct load_segment *seg; | |
2540 | ||
b4f1578f AK |
2541 | if (!(seg = _add_segment(node, SEG_STRIPED, size))) |
2542 | return_0; | |
165e4a11 AK |
2543 | |
2544 | seg->stripe_size = stripe_size; | |
2545 | ||
2546 | return 1; | |
2547 | } | |
2548 | ||
12ca060e MB |
2549 | int dm_tree_node_add_crypt_target(struct dm_tree_node *node, |
2550 | uint64_t size, | |
2551 | const char *cipher, | |
2552 | const char *chainmode, | |
2553 | const char *iv, | |
2554 | uint64_t iv_offset, | |
2555 | const char *key) | |
2556 | { | |
2557 | struct load_segment *seg; | |
2558 | ||
2559 | if (!(seg = _add_segment(node, SEG_CRYPT, size))) | |
2560 | return_0; | |
2561 | ||
2562 | seg->cipher = cipher; | |
2563 | seg->chainmode = chainmode; | |
2564 | seg->iv = iv; | |
2565 | seg->iv_offset = iv_offset; | |
2566 | seg->key = key; | |
2567 | ||
2568 | return 1; | |
2569 | } | |
2570 | ||
b4f1578f | 2571 | int dm_tree_node_add_mirror_target_log(struct dm_tree_node *node, |
165e4a11 | 2572 | uint32_t region_size, |
08e64ce5 | 2573 | unsigned clustered, |
165e4a11 | 2574 | const char *log_uuid, |
ce7ed2c0 AK |
2575 | unsigned area_count, |
2576 | uint32_t flags) | |
165e4a11 | 2577 | { |
908db078 | 2578 | struct dm_tree_node *log_node = NULL; |
165e4a11 AK |
2579 | struct load_segment *seg; |
2580 | ||
2581 | if (!node->props.segment_count) { | |
b8175c33 | 2582 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
2583 | return 0; |
2584 | } | |
2585 | ||
2c44337b | 2586 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 2587 | |
24b026e3 | 2588 | if (log_uuid) { |
67b25ed4 AK |
2589 | if (!(seg->uuid = dm_pool_strdup(node->dtree->mem, log_uuid))) { |
2590 | log_error("log uuid pool_strdup failed"); | |
2591 | return 0; | |
2592 | } | |
df390f17 AK |
2593 | if ((flags & DM_CORELOG)) |
2594 | /* For pvmove: immediate resume (for size validation) isn't needed. */ | |
2595 | node->props.delay_resume_if_new = 1; | |
2596 | else { | |
9723090c AK |
2597 | if (!(log_node = dm_tree_find_node_by_uuid(node->dtree, log_uuid))) { |
2598 | log_error("Couldn't find mirror log uuid %s.", log_uuid); | |
2599 | return 0; | |
2600 | } | |
2601 | ||
566515c0 PR |
2602 | if (clustered) |
2603 | log_node->props.immediate_dev_node = 1; | |
2604 | ||
0a99713e AK |
2605 | /* The kernel validates the size of disk logs. */ |
2606 | /* FIXME Propagate to any devices below */ | |
2607 | log_node->props.delay_resume_if_new = 0; | |
2608 | ||
9723090c AK |
2609 | if (!_link_tree_nodes(node, log_node)) |
2610 | return_0; | |
2611 | } | |
165e4a11 AK |
2612 | } |
2613 | ||
2614 | seg->log = log_node; | |
165e4a11 AK |
2615 | seg->region_size = region_size; |
2616 | seg->clustered = clustered; | |
2617 | seg->mirror_area_count = area_count; | |
dbcb64b8 | 2618 | seg->flags = flags; |
165e4a11 AK |
2619 | |
2620 | return 1; | |
2621 | } | |
2622 | ||
b4f1578f | 2623 | int dm_tree_node_add_mirror_target(struct dm_tree_node *node, |
40e5fd8b | 2624 | uint64_t size) |
165e4a11 | 2625 | { |
cbecd3cd | 2626 | if (!_add_segment(node, SEG_MIRRORED, size)) |
b4f1578f | 2627 | return_0; |
165e4a11 AK |
2628 | |
2629 | return 1; | |
2630 | } | |
2631 | ||
cac52ca4 JEB |
2632 | int dm_tree_node_add_raid_target(struct dm_tree_node *node, |
2633 | uint64_t size, | |
2634 | const char *raid_type, | |
2635 | uint32_t region_size, | |
2636 | uint32_t stripe_size, | |
f439e65b | 2637 | uint64_t rebuilds, |
cac52ca4 JEB |
2638 | uint64_t reserved2) |
2639 | { | |
2640 | int i; | |
2641 | struct load_segment *seg = NULL; | |
2642 | ||
2643 | for (i = 0; dm_segtypes[i].target && !seg; i++) | |
2644 | if (!strcmp(raid_type, dm_segtypes[i].target)) | |
2645 | if (!(seg = _add_segment(node, | |
2646 | dm_segtypes[i].type, size))) | |
2647 | return_0; | |
2648 | ||
b2fa9b43 JEB |
2649 | if (!seg) |
2650 | return_0; | |
2651 | ||
cac52ca4 JEB |
2652 | seg->region_size = region_size; |
2653 | seg->stripe_size = stripe_size; | |
2654 | seg->area_count = 0; | |
f439e65b | 2655 | seg->rebuilds = rebuilds; |
cac52ca4 JEB |
2656 | |
2657 | return 1; | |
2658 | } | |
2659 | ||
b262f3e1 ZK |
2660 | int dm_tree_node_add_replicator_target(struct dm_tree_node *node, |
2661 | uint64_t size, | |
2662 | const char *rlog_uuid, | |
2663 | const char *rlog_type, | |
2664 | unsigned rsite_index, | |
2665 | dm_replicator_mode_t mode, | |
2666 | uint32_t async_timeout, | |
2667 | uint64_t fall_behind_data, | |
2668 | uint32_t fall_behind_ios) | |
2669 | { | |
2670 | struct load_segment *rseg; | |
2671 | struct replicator_site *rsite; | |
2672 | ||
2673 | /* Local site0 - adds replicator segment and links rlog device */ | |
2674 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2675 | if (node->props.segment_count) { | |
2676 | log_error(INTERNAL_ERROR "Attempt to add replicator segment to already used node."); | |
2677 | return 0; | |
2678 | } | |
2679 | ||
2680 | if (!(rseg = _add_segment(node, SEG_REPLICATOR, size))) | |
2681 | return_0; | |
2682 | ||
2683 | if (!(rseg->log = dm_tree_find_node_by_uuid(node->dtree, rlog_uuid))) { | |
2684 | log_error("Missing replicator log uuid %s.", rlog_uuid); | |
2685 | return 0; | |
2686 | } | |
2687 | ||
2688 | if (!_link_tree_nodes(node, rseg->log)) | |
2689 | return_0; | |
2690 | ||
2691 | if (strcmp(rlog_type, "ringbuffer") != 0) { | |
2692 | log_error("Unsupported replicator log type %s.", rlog_type); | |
2693 | return 0; | |
2694 | } | |
2695 | ||
2696 | if (!(rseg->rlog_type = dm_pool_strdup(node->dtree->mem, rlog_type))) | |
2697 | return_0; | |
2698 | ||
2699 | dm_list_init(&rseg->rsites); | |
2700 | rseg->rdevice_count = 0; | |
2701 | node->activation_priority = 1; | |
2702 | } | |
2703 | ||
2704 | /* Add site to segment */ | |
2705 | if (mode == DM_REPLICATOR_SYNC | |
2706 | && (async_timeout || fall_behind_ios || fall_behind_data)) { | |
2707 | log_error("Async parameters passed for synchronnous replicator."); | |
2708 | return 0; | |
2709 | } | |
2710 | ||
2711 | if (node->props.segment_count != 1) { | |
2712 | log_error(INTERNAL_ERROR "Attempt to add remote site area before setting replicator log."); | |
2713 | return 0; | |
2714 | } | |
2715 | ||
2716 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2717 | if (rseg->type != SEG_REPLICATOR) { | |
2718 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2719 | dm_segtypes[rseg->type].target); | |
2720 | return 0; | |
2721 | } | |
2722 | ||
2723 | if (!(rsite = dm_pool_zalloc(node->dtree->mem, sizeof(*rsite)))) { | |
2724 | log_error("Failed to allocate remote site segment."); | |
2725 | return 0; | |
2726 | } | |
2727 | ||
2728 | dm_list_add(&rseg->rsites, &rsite->list); | |
2729 | rseg->rsite_count++; | |
2730 | ||
2731 | rsite->mode = mode; | |
2732 | rsite->async_timeout = async_timeout; | |
2733 | rsite->fall_behind_data = fall_behind_data; | |
2734 | rsite->fall_behind_ios = fall_behind_ios; | |
2735 | rsite->rsite_index = rsite_index; | |
2736 | ||
2737 | return 1; | |
2738 | } | |
2739 | ||
2740 | /* Appends device node to Replicator */ | |
2741 | int dm_tree_node_add_replicator_dev_target(struct dm_tree_node *node, | |
2742 | uint64_t size, | |
2743 | const char *replicator_uuid, | |
2744 | uint64_t rdevice_index, | |
2745 | const char *rdev_uuid, | |
2746 | unsigned rsite_index, | |
2747 | const char *slog_uuid, | |
2748 | uint32_t slog_flags, | |
2749 | uint32_t slog_region_size) | |
2750 | { | |
2751 | struct seg_area *area; | |
2752 | struct load_segment *rseg; | |
2753 | struct load_segment *rep_seg; | |
2754 | ||
2755 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2756 | /* Site index for local target */ | |
2757 | if (!(rseg = _add_segment(node, SEG_REPLICATOR_DEV, size))) | |
2758 | return_0; | |
2759 | ||
2760 | if (!(rseg->replicator = dm_tree_find_node_by_uuid(node->dtree, replicator_uuid))) { | |
2761 | log_error("Missing replicator uuid %s.", replicator_uuid); | |
2762 | return 0; | |
2763 | } | |
2764 | ||
2765 | /* Local slink0 for replicator must be always initialized first */ | |
2766 | if (rseg->replicator->props.segment_count != 1) { | |
2767 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment."); | |
2768 | return 0; | |
2769 | } | |
2770 | ||
2771 | rep_seg = dm_list_item(dm_list_last(&rseg->replicator->props.segs), struct load_segment); | |
2772 | if (rep_seg->type != SEG_REPLICATOR) { | |
2773 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2774 | dm_segtypes[rep_seg->type].target); | |
2775 | return 0; | |
2776 | } | |
2777 | rep_seg->rdevice_count++; | |
2778 | ||
2779 | if (!_link_tree_nodes(node, rseg->replicator)) | |
2780 | return_0; | |
2781 | ||
2782 | rseg->rdevice_index = rdevice_index; | |
2783 | } else { | |
2784 | /* Local slink0 for replicator must be always initialized first */ | |
2785 | if (node->props.segment_count != 1) { | |
2786 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment."); | |
2787 | return 0; | |
2788 | } | |
2789 | ||
2790 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2791 | if (rseg->type != SEG_REPLICATOR_DEV) { | |
2792 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment %s.", | |
2793 | dm_segtypes[rseg->type].target); | |
2794 | return 0; | |
2795 | } | |
2796 | } | |
2797 | ||
2798 | if (!(slog_flags & DM_CORELOG) && !slog_uuid) { | |
2799 | log_error("Unspecified sync log uuid."); | |
2800 | return 0; | |
2801 | } | |
2802 | ||
2803 | if (!dm_tree_node_add_target_area(node, NULL, rdev_uuid, 0)) | |
2804 | return_0; | |
2805 | ||
2806 | area = dm_list_item(dm_list_last(&rseg->areas), struct seg_area); | |
2807 | ||
2808 | if (!(slog_flags & DM_CORELOG)) { | |
2809 | if (!(area->slog = dm_tree_find_node_by_uuid(node->dtree, slog_uuid))) { | |
2810 | log_error("Couldn't find sync log uuid %s.", slog_uuid); | |
2811 | return 0; | |
2812 | } | |
2813 | ||
2814 | if (!_link_tree_nodes(node, area->slog)) | |
2815 | return_0; | |
2816 | } | |
2817 | ||
2818 | area->flags = slog_flags; | |
2819 | area->region_size = slog_region_size; | |
2820 | area->rsite_index = rsite_index; | |
2821 | ||
2822 | return 1; | |
2823 | } | |
2824 | ||
5668fe04 ZK |
2825 | static int _thin_validate_device_id(uint32_t device_id) |
2826 | { | |
2827 | if (device_id > DM_THIN_MAX_DEVICE_ID) { | |
2828 | log_error("Device id %u is higher then %u.", | |
2829 | device_id, DM_THIN_MAX_DEVICE_ID); | |
2830 | return 0; | |
2831 | } | |
2832 | ||
2833 | return 1; | |
2834 | } | |
2835 | ||
4251236e ZK |
2836 | int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node, |
2837 | uint64_t size, | |
e0ea24be | 2838 | uint64_t transaction_id, |
4251236e | 2839 | const char *metadata_uuid, |
5668fd6a | 2840 | const char *pool_uuid, |
4251236e | 2841 | uint32_t data_block_size, |
e9156c2b | 2842 | uint64_t low_water_mark, |
460c5991 | 2843 | unsigned skip_block_zeroing) |
4251236e ZK |
2844 | { |
2845 | struct load_segment *seg; | |
2846 | ||
3f53c059 | 2847 | if (data_block_size < DM_THIN_MIN_DATA_BLOCK_SIZE) { |
565a4bfc | 2848 | log_error("Data block size %u is lower then %u sectors.", |
3f53c059 | 2849 | data_block_size, DM_THIN_MIN_DATA_BLOCK_SIZE); |
4251236e ZK |
2850 | return 0; |
2851 | } | |
2852 | ||
3f53c059 | 2853 | if (data_block_size > DM_THIN_MAX_DATA_BLOCK_SIZE) { |
565a4bfc | 2854 | log_error("Data block size %u is higher then %u sectors.", |
3f53c059 | 2855 | data_block_size, DM_THIN_MAX_DATA_BLOCK_SIZE); |
4251236e ZK |
2856 | return 0; |
2857 | } | |
2858 | ||
2859 | if (!(seg = _add_segment(node, SEG_THIN_POOL, size))) | |
2860 | return_0; | |
2861 | ||
2862 | if (!(seg->metadata = dm_tree_find_node_by_uuid(node->dtree, metadata_uuid))) { | |
2863 | log_error("Missing metadata uuid %s.", metadata_uuid); | |
2864 | return 0; | |
2865 | } | |
2866 | ||
2867 | if (!_link_tree_nodes(node, seg->metadata)) | |
2868 | return_0; | |
2869 | ||
2870 | if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) { | |
2871 | log_error("Missing pool uuid %s.", pool_uuid); | |
2872 | return 0; | |
2873 | } | |
2874 | ||
2875 | if (!_link_tree_nodes(node, seg->pool)) | |
2876 | return_0; | |
2877 | ||
e0ea24be | 2878 | node->props.thin_pool_transaction_id = transaction_id; // compare on resume |
e9156c2b | 2879 | seg->low_water_mark = low_water_mark; |
e0ea24be | 2880 | seg->data_block_size = data_block_size; |
460c5991 | 2881 | seg->skip_block_zeroing = skip_block_zeroing; |
25e6ab87 ZK |
2882 | dm_list_init(&seg->thin_messages); |
2883 | ||
2884 | return 1; | |
2885 | } | |
2886 | ||
2887 | int dm_tree_node_add_thin_pool_message(struct dm_tree_node *node, | |
7b199dc5 | 2888 | const struct dm_thin_message *message) |
25e6ab87 ZK |
2889 | { |
2890 | struct load_segment *seg; | |
2891 | struct thin_message *tm; | |
2892 | ||
2893 | if (node->props.segment_count != 1) { | |
759b9592 | 2894 | log_error("Thin pool node must have only one segment."); |
25e6ab87 ZK |
2895 | return 0; |
2896 | } | |
2897 | ||
2898 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
25e6ab87 | 2899 | if (seg->type != SEG_THIN_POOL) { |
759b9592 | 2900 | log_error("Thin pool node has segment type %s.", |
25e6ab87 ZK |
2901 | dm_segtypes[seg->type].target); |
2902 | return 0; | |
2903 | } | |
2904 | ||
2905 | if (!(tm = dm_pool_zalloc(node->dtree->mem, sizeof (*tm)))) { | |
2906 | log_error("Failed to allocate thin message."); | |
2907 | return 0; | |
2908 | } | |
2909 | ||
2910 | switch (message->type) { | |
2911 | case DM_THIN_MESSAGE_CREATE_SNAP: | |
759b9592 | 2912 | /* If the thin origin is active, it must be suspend first! */ |
25e6ab87 | 2913 | if (message->u.m_create_snap.device_id == message->u.m_create_snap.origin_id) { |
759b9592 | 2914 | log_error("Cannot use same device id for origin and its snapshot."); |
25e6ab87 ZK |
2915 | return 0; |
2916 | } | |
2917 | if (!_thin_validate_device_id(message->u.m_create_snap.device_id) || | |
2918 | !_thin_validate_device_id(message->u.m_create_snap.origin_id)) | |
2919 | return_0; | |
2a0d806b | 2920 | tm->message.u.m_create_snap = message->u.m_create_snap; |
25e6ab87 ZK |
2921 | break; |
2922 | case DM_THIN_MESSAGE_CREATE_THIN: | |
2923 | if (!_thin_validate_device_id(message->u.m_create_thin.device_id)) | |
2924 | return_0; | |
2a0d806b | 2925 | tm->message.u.m_create_thin = message->u.m_create_thin; |
660a42bc | 2926 | tm->expected_errno = EEXIST; |
25e6ab87 ZK |
2927 | break; |
2928 | case DM_THIN_MESSAGE_DELETE: | |
2929 | if (!_thin_validate_device_id(message->u.m_delete.device_id)) | |
2930 | return_0; | |
2a0d806b | 2931 | tm->message.u.m_delete = message->u.m_delete; |
660a42bc | 2932 | tm->expected_errno = ENODATA; |
25e6ab87 ZK |
2933 | break; |
2934 | case DM_THIN_MESSAGE_TRIM: | |
2935 | if (!_thin_validate_device_id(message->u.m_trim.device_id)) | |
2936 | return_0; | |
2a0d806b | 2937 | tm->message.u.m_trim = message->u.m_trim; |
25e6ab87 ZK |
2938 | break; |
2939 | case DM_THIN_MESSAGE_SET_TRANSACTION_ID: | |
2940 | if (message->u.m_set_transaction_id.current_id != | |
2941 | (message->u.m_set_transaction_id.new_id - 1)) { | |
2942 | log_error("New transaction_id must be sequential."); | |
2943 | return 0; /* FIXME: Maybe too strict here? */ | |
2944 | } | |
2a0d806b | 2945 | tm->message.u.m_set_transaction_id = message->u.m_set_transaction_id; |
25e6ab87 ZK |
2946 | break; |
2947 | default: | |
2948 | log_error("Unsupported message type %d.", (int) message->type); | |
2949 | return 0; | |
2950 | } | |
2951 | ||
2952 | tm->message.type = message->type; | |
2953 | dm_list_add(&seg->thin_messages, &tm->list); | |
4251236e ZK |
2954 | |
2955 | return 1; | |
2956 | } | |
2957 | ||
2958 | int dm_tree_node_add_thin_target(struct dm_tree_node *node, | |
2959 | uint64_t size, | |
4251236e ZK |
2960 | const char *thin_pool_uuid, |
2961 | uint32_t device_id) | |
2962 | { | |
2963 | struct load_segment *seg; | |
2964 | ||
5668fe04 ZK |
2965 | if (!_thin_validate_device_id(device_id)) |
2966 | return_0; | |
4251236e ZK |
2967 | |
2968 | if (!(seg = _add_segment(node, SEG_THIN, size))) | |
2969 | return_0; | |
2970 | ||
2971 | if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, thin_pool_uuid))) { | |
2972 | log_error("Missing thin pool uuid %s.", thin_pool_uuid); | |
2973 | return 0; | |
2974 | } | |
2975 | ||
2976 | if (!_link_tree_nodes(node, seg->pool)) | |
2977 | return_0; | |
2978 | ||
1419bf1c ZK |
2979 | seg->device_id = device_id; |
2980 | ||
4251236e ZK |
2981 | return 1; |
2982 | } | |
2983 | ||
b4f1578f | 2984 | static int _add_area(struct dm_tree_node *node, struct load_segment *seg, struct dm_tree_node *dev_node, uint64_t offset) |
165e4a11 AK |
2985 | { |
2986 | struct seg_area *area; | |
2987 | ||
b4f1578f | 2988 | if (!(area = dm_pool_zalloc(node->dtree->mem, sizeof (*area)))) { |
165e4a11 AK |
2989 | log_error("Failed to allocate target segment area."); |
2990 | return 0; | |
2991 | } | |
2992 | ||
2993 | area->dev_node = dev_node; | |
2994 | area->offset = offset; | |
2995 | ||
2c44337b | 2996 | dm_list_add(&seg->areas, &area->list); |
165e4a11 AK |
2997 | seg->area_count++; |
2998 | ||
2999 | return 1; | |
3000 | } | |
3001 | ||
b4f1578f | 3002 | int dm_tree_node_add_target_area(struct dm_tree_node *node, |
40e5fd8b AK |
3003 | const char *dev_name, |
3004 | const char *uuid, | |
3005 | uint64_t offset) | |
165e4a11 AK |
3006 | { |
3007 | struct load_segment *seg; | |
3008 | struct stat info; | |
b4f1578f | 3009 | struct dm_tree_node *dev_node; |
165e4a11 AK |
3010 | |
3011 | if ((!dev_name || !*dev_name) && (!uuid || !*uuid)) { | |
b4f1578f | 3012 | log_error("dm_tree_node_add_target_area called without device"); |
165e4a11 AK |
3013 | return 0; |
3014 | } | |
3015 | ||
3016 | if (uuid) { | |
b4f1578f | 3017 | if (!(dev_node = dm_tree_find_node_by_uuid(node->dtree, uuid))) { |
165e4a11 AK |
3018 | log_error("Couldn't find area uuid %s.", uuid); |
3019 | return 0; | |
3020 | } | |
b4f1578f AK |
3021 | if (!_link_tree_nodes(node, dev_node)) |
3022 | return_0; | |
165e4a11 | 3023 | } else { |
6d04311e | 3024 | if (stat(dev_name, &info) < 0) { |
165e4a11 AK |
3025 | log_error("Device %s not found.", dev_name); |
3026 | return 0; | |
3027 | } | |
3028 | ||
40e5fd8b | 3029 | if (!S_ISBLK(info.st_mode)) { |
165e4a11 AK |
3030 | log_error("Device %s is not a block device.", dev_name); |
3031 | return 0; | |
3032 | } | |
3033 | ||
3034 | /* FIXME Check correct macro use */ | |
cda69e17 PR |
3035 | if (!(dev_node = _add_dev(node->dtree, node, MAJOR(info.st_rdev), |
3036 | MINOR(info.st_rdev), 0))) | |
b4f1578f | 3037 | return_0; |
165e4a11 AK |
3038 | } |
3039 | ||
3040 | if (!node->props.segment_count) { | |
b8175c33 | 3041 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
3042 | return 0; |
3043 | } | |
3044 | ||
2c44337b | 3045 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 3046 | |
b4f1578f AK |
3047 | if (!_add_area(node, seg, dev_node, offset)) |
3048 | return_0; | |
165e4a11 AK |
3049 | |
3050 | return 1; | |
db208f51 | 3051 | } |
bd90c6b2 | 3052 | |
6d04311e JEB |
3053 | int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset) |
3054 | { | |
3055 | struct load_segment *seg; | |
3056 | ||
3057 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
3058 | ||
415c0690 AK |
3059 | switch (seg->type) { |
3060 | case SEG_RAID1: | |
3061 | case SEG_RAID4: | |
3062 | case SEG_RAID5_LA: | |
3063 | case SEG_RAID5_RA: | |
3064 | case SEG_RAID5_LS: | |
3065 | case SEG_RAID5_RS: | |
3066 | case SEG_RAID6_ZR: | |
3067 | case SEG_RAID6_NR: | |
3068 | case SEG_RAID6_NC: | |
3069 | break; | |
3070 | default: | |
3071 | log_error("dm_tree_node_add_null_area() called on an unsupported segment type"); | |
3072 | return 0; | |
3073 | } | |
3074 | ||
6d04311e JEB |
3075 | if (!_add_area(node, seg, NULL, offset)) |
3076 | return_0; | |
3077 | ||
3078 | return 1; | |
3079 | } | |
3080 | ||
bd90c6b2 AK |
3081 | void dm_tree_set_cookie(struct dm_tree_node *node, uint32_t cookie) |
3082 | { | |
3083 | node->dtree->cookie = cookie; | |
3084 | } | |
3085 | ||
3086 | uint32_t dm_tree_get_cookie(struct dm_tree_node *node) | |
3087 | { | |
3088 | return node->dtree->cookie; | |
3089 | } |