]>
Commit | Line | Data |
---|---|---|
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 | ||
b262f3e1 ZK |
27 | #define REPLICATOR_LOCAL_SITE 0 |
28 | ||
165e4a11 AK |
29 | /* Supported segment types */ |
30 | enum { | |
12ca060e MB |
31 | SEG_CRYPT, |
32 | SEG_ERROR, | |
165e4a11 AK |
33 | SEG_LINEAR, |
34 | SEG_MIRRORED, | |
b262f3e1 ZK |
35 | SEG_REPLICATOR, |
36 | SEG_REPLICATOR_DEV, | |
165e4a11 AK |
37 | SEG_SNAPSHOT, |
38 | SEG_SNAPSHOT_ORIGIN, | |
aa6f4e51 | 39 | SEG_SNAPSHOT_MERGE, |
165e4a11 AK |
40 | SEG_STRIPED, |
41 | SEG_ZERO, | |
4251236e ZK |
42 | SEG_THIN_POOL, |
43 | SEG_THIN, | |
cac52ca4 JEB |
44 | SEG_RAID1, |
45 | SEG_RAID4, | |
46 | SEG_RAID5_LA, | |
47 | SEG_RAID5_RA, | |
48 | SEG_RAID5_LS, | |
49 | SEG_RAID5_RS, | |
50 | SEG_RAID6_ZR, | |
51 | SEG_RAID6_NR, | |
52 | SEG_RAID6_NC, | |
53 | SEG_LAST, | |
165e4a11 | 54 | }; |
b4f1578f | 55 | |
165e4a11 AK |
56 | /* FIXME Add crypt and multipath support */ |
57 | ||
58 | struct { | |
59 | unsigned type; | |
60 | const char *target; | |
61 | } dm_segtypes[] = { | |
12ca060e | 62 | { SEG_CRYPT, "crypt" }, |
165e4a11 AK |
63 | { SEG_ERROR, "error" }, |
64 | { SEG_LINEAR, "linear" }, | |
65 | { SEG_MIRRORED, "mirror" }, | |
b262f3e1 ZK |
66 | { SEG_REPLICATOR, "replicator" }, |
67 | { SEG_REPLICATOR_DEV, "replicator-dev" }, | |
165e4a11 AK |
68 | { SEG_SNAPSHOT, "snapshot" }, |
69 | { SEG_SNAPSHOT_ORIGIN, "snapshot-origin" }, | |
aa6f4e51 | 70 | { SEG_SNAPSHOT_MERGE, "snapshot-merge" }, |
165e4a11 AK |
71 | { SEG_STRIPED, "striped" }, |
72 | { SEG_ZERO, "zero"}, | |
4251236e ZK |
73 | { SEG_THIN_POOL, "thin-pool"}, |
74 | { SEG_THIN, "thin"}, | |
cac52ca4 JEB |
75 | { SEG_RAID1, "raid1"}, |
76 | { SEG_RAID4, "raid4"}, | |
77 | { SEG_RAID5_LA, "raid5_la"}, | |
78 | { SEG_RAID5_RA, "raid5_ra"}, | |
79 | { SEG_RAID5_LS, "raid5_ls"}, | |
80 | { SEG_RAID5_RS, "raid5_rs"}, | |
81 | { SEG_RAID6_ZR, "raid6_zr"}, | |
82 | { SEG_RAID6_NR, "raid6_nr"}, | |
83 | { SEG_RAID6_NC, "raid6_nc"}, | |
ee05be08 ZK |
84 | |
85 | /* | |
86 | *WARNING: Since 'raid' target overloads this 1:1 mapping table | |
87 | * for search do not add new enum elements past them! | |
88 | */ | |
cac52ca4 JEB |
89 | { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */ |
90 | { SEG_RAID6_ZR, "raid6"}, /* same as "raid6_zr" */ | |
91 | { SEG_LAST, NULL }, | |
165e4a11 AK |
92 | }; |
93 | ||
94 | /* Some segment types have a list of areas of other devices attached */ | |
95 | struct seg_area { | |
2c44337b | 96 | struct dm_list list; |
165e4a11 | 97 | |
b4f1578f | 98 | struct dm_tree_node *dev_node; |
165e4a11 AK |
99 | |
100 | uint64_t offset; | |
b262f3e1 ZK |
101 | |
102 | unsigned rsite_index; /* Replicator site index */ | |
103 | struct dm_tree_node *slog; /* Replicator sync log node */ | |
104 | uint64_t region_size; /* Replicator sync log size */ | |
105 | uint32_t flags; /* Replicator sync log flags */ | |
106 | }; | |
107 | ||
2e732e96 ZK |
108 | struct dm_thin_message { |
109 | dm_thin_message_t type; | |
110 | union { | |
111 | struct { | |
112 | uint32_t device_id; | |
113 | uint32_t origin_id; | |
114 | } m_create_snap; | |
115 | struct { | |
116 | uint32_t device_id; | |
117 | } m_create_thin; | |
118 | struct { | |
119 | uint32_t device_id; | |
120 | } m_delete; | |
121 | struct { | |
122 | uint64_t current_id; | |
123 | uint64_t new_id; | |
124 | } m_set_transaction_id; | |
125 | struct { | |
126 | uint32_t device_id; | |
127 | uint64_t new_size; | |
128 | } m_trim; | |
129 | } u; | |
130 | }; | |
131 | ||
25e6ab87 ZK |
132 | struct thin_message { |
133 | struct dm_list list; | |
134 | struct dm_thin_message message; | |
660a42bc | 135 | int expected_errno; |
25e6ab87 ZK |
136 | }; |
137 | ||
b262f3e1 ZK |
138 | /* Replicator-log has a list of sites */ |
139 | /* FIXME: maybe move to seg_area too? */ | |
140 | struct replicator_site { | |
141 | struct dm_list list; | |
142 | ||
143 | unsigned rsite_index; | |
144 | dm_replicator_mode_t mode; | |
145 | uint32_t async_timeout; | |
146 | uint32_t fall_behind_ios; | |
147 | uint64_t fall_behind_data; | |
165e4a11 AK |
148 | }; |
149 | ||
150 | /* Per-segment properties */ | |
151 | struct load_segment { | |
2c44337b | 152 | struct dm_list list; |
165e4a11 AK |
153 | |
154 | unsigned type; | |
155 | ||
156 | uint64_t size; | |
157 | ||
b262f3e1 ZK |
158 | unsigned area_count; /* Linear + Striped + Mirrored + Crypt + Replicator */ |
159 | struct dm_list areas; /* Linear + Striped + Mirrored + Crypt + Replicator */ | |
165e4a11 | 160 | |
cac52ca4 | 161 | uint32_t stripe_size; /* Striped + raid */ |
165e4a11 AK |
162 | |
163 | int persistent; /* Snapshot */ | |
164 | uint32_t chunk_size; /* Snapshot */ | |
b4f1578f AK |
165 | struct dm_tree_node *cow; /* Snapshot */ |
166 | struct dm_tree_node *origin; /* Snapshot + Snapshot origin */ | |
aa6f4e51 | 167 | struct dm_tree_node *merge; /* Snapshot */ |
165e4a11 | 168 | |
b262f3e1 | 169 | struct dm_tree_node *log; /* Mirror + Replicator */ |
cac52ca4 | 170 | uint32_t region_size; /* Mirror + raid */ |
165e4a11 AK |
171 | unsigned clustered; /* Mirror */ |
172 | unsigned mirror_area_count; /* Mirror */ | |
dbcb64b8 | 173 | uint32_t flags; /* Mirror log */ |
67b25ed4 | 174 | char *uuid; /* Clustered mirror log */ |
12ca060e MB |
175 | |
176 | const char *cipher; /* Crypt */ | |
177 | const char *chainmode; /* Crypt */ | |
178 | const char *iv; /* Crypt */ | |
179 | uint64_t iv_offset; /* Crypt */ | |
180 | const char *key; /* Crypt */ | |
b262f3e1 ZK |
181 | |
182 | const char *rlog_type; /* Replicator */ | |
183 | struct dm_list rsites; /* Replicator */ | |
184 | unsigned rsite_count; /* Replicator */ | |
185 | unsigned rdevice_count; /* Replicator */ | |
186 | struct dm_tree_node *replicator;/* Replicator-dev */ | |
187 | uint64_t rdevice_index; /* Replicator-dev */ | |
f439e65b | 188 | |
40e5fd8b | 189 | uint64_t rebuilds; /* raid */ |
4251236e ZK |
190 | |
191 | struct dm_tree_node *metadata; /* Thin_pool */ | |
192 | struct dm_tree_node *pool; /* Thin_pool, Thin */ | |
25e6ab87 | 193 | struct dm_list thin_messages; /* Thin_pool */ |
bbcd37e4 | 194 | uint64_t transaction_id; /* Thin_pool */ |
e9156c2b | 195 | uint64_t low_water_mark; /* Thin_pool */ |
e0ea24be | 196 | uint32_t data_block_size; /* Thin_pool */ |
460c5991 | 197 | unsigned skip_block_zeroing; /* Thin_pool */ |
4251236e ZK |
198 | uint32_t device_id; /* Thin */ |
199 | ||
165e4a11 AK |
200 | }; |
201 | ||
202 | /* Per-device properties */ | |
203 | struct load_properties { | |
204 | int read_only; | |
205 | uint32_t major; | |
206 | uint32_t minor; | |
207 | ||
52b84409 AK |
208 | uint32_t read_ahead; |
209 | uint32_t read_ahead_flags; | |
210 | ||
165e4a11 | 211 | unsigned segment_count; |
bb875bb9 | 212 | unsigned size_changed; |
2c44337b | 213 | struct dm_list segs; |
165e4a11 AK |
214 | |
215 | const char *new_name; | |
566515c0 PR |
216 | |
217 | /* If immediate_dev_node is set to 1, try to create the dev node | |
218 | * as soon as possible (e.g. in preload stage even during traversal | |
219 | * and processing of dm tree). This will also flush all stacked dev | |
220 | * node operations, synchronizing with udev. | |
221 | */ | |
df390f17 AK |
222 | unsigned immediate_dev_node; |
223 | ||
224 | /* | |
225 | * If the device size changed from zero and this is set, | |
226 | * don't resume the device immediately, even if the device | |
227 | * has parents. This works provided the parents do not | |
228 | * validate the device size and is required by pvmove to | |
229 | * avoid starting the mirror resync operation too early. | |
230 | */ | |
231 | unsigned delay_resume_if_new; | |
bbcd37e4 ZK |
232 | |
233 | /* Send messages for this node in preload */ | |
234 | unsigned send_messages; | |
165e4a11 AK |
235 | }; |
236 | ||
237 | /* Two of these used to join two nodes with uses and used_by. */ | |
b4f1578f | 238 | struct dm_tree_link { |
2c44337b | 239 | struct dm_list list; |
b4f1578f | 240 | struct dm_tree_node *node; |
165e4a11 AK |
241 | }; |
242 | ||
b4f1578f AK |
243 | struct dm_tree_node { |
244 | struct dm_tree *dtree; | |
3d0480ed | 245 | |
40e5fd8b AK |
246 | const char *name; |
247 | const char *uuid; | |
248 | struct dm_info info; | |
3d0480ed | 249 | |
40e5fd8b AK |
250 | struct dm_list uses; /* Nodes this node uses */ |
251 | struct dm_list used_by; /* Nodes that use this node */ | |
165e4a11 | 252 | |
56c28292 AK |
253 | int activation_priority; /* 0 gets activated first */ |
254 | ||
f16aea9e PR |
255 | uint16_t udev_flags; /* Udev control flags */ |
256 | ||
165e4a11 AK |
257 | void *context; /* External supplied context */ |
258 | ||
259 | struct load_properties props; /* For creation/table (re)load */ | |
76d1aec8 ZK |
260 | |
261 | /* | |
262 | * If presuspend of child node is needed | |
263 | * Note: only direct child is allowed | |
264 | */ | |
265 | struct dm_tree_node *presuspend_node; | |
3d0480ed AK |
266 | }; |
267 | ||
b4f1578f | 268 | struct dm_tree { |
a3f6b2ce AK |
269 | struct dm_pool *mem; |
270 | struct dm_hash_table *devs; | |
165e4a11 | 271 | struct dm_hash_table *uuids; |
b4f1578f | 272 | struct dm_tree_node root; |
c55b1410 | 273 | int skip_lockfs; /* 1 skips lockfs (for non-snapshots) */ |
787200ef PR |
274 | int no_flush; /* 1 sets noflush (mirrors/multipath) */ |
275 | int retry_remove; /* 1 retries remove if not successful */ | |
bd90c6b2 | 276 | uint32_t cookie; |
3d0480ed AK |
277 | }; |
278 | ||
5c9eae96 AK |
279 | /* |
280 | * Tree functions. | |
281 | */ | |
b4f1578f | 282 | struct dm_tree *dm_tree_create(void) |
3d0480ed | 283 | { |
0395dd22 | 284 | struct dm_pool *dmem; |
b4f1578f | 285 | struct dm_tree *dtree; |
3d0480ed | 286 | |
0395dd22 ZK |
287 | if (!(dmem = dm_pool_create("dtree", 1024)) || |
288 | !(dtree = dm_pool_zalloc(dmem, sizeof(*dtree)))) { | |
289 | log_error("Failed to allocate dtree."); | |
290 | if (dmem) | |
291 | dm_pool_destroy(dmem); | |
3d0480ed AK |
292 | return NULL; |
293 | } | |
294 | ||
b4f1578f | 295 | dtree->root.dtree = dtree; |
2c44337b AK |
296 | dm_list_init(&dtree->root.uses); |
297 | dm_list_init(&dtree->root.used_by); | |
c55b1410 | 298 | dtree->skip_lockfs = 0; |
b9ffd32c | 299 | dtree->no_flush = 0; |
0395dd22 | 300 | dtree->mem = dmem; |
3d0480ed | 301 | |
b4f1578f AK |
302 | if (!(dtree->devs = dm_hash_create(8))) { |
303 | log_error("dtree hash creation failed"); | |
304 | dm_pool_destroy(dtree->mem); | |
3d0480ed AK |
305 | return NULL; |
306 | } | |
307 | ||
b4f1578f AK |
308 | if (!(dtree->uuids = dm_hash_create(32))) { |
309 | log_error("dtree uuid hash creation failed"); | |
310 | dm_hash_destroy(dtree->devs); | |
311 | dm_pool_destroy(dtree->mem); | |
165e4a11 AK |
312 | return NULL; |
313 | } | |
314 | ||
b4f1578f | 315 | return dtree; |
3d0480ed AK |
316 | } |
317 | ||
b4f1578f | 318 | void dm_tree_free(struct dm_tree *dtree) |
3d0480ed | 319 | { |
b4f1578f | 320 | if (!dtree) |
3d0480ed AK |
321 | return; |
322 | ||
b4f1578f AK |
323 | dm_hash_destroy(dtree->uuids); |
324 | dm_hash_destroy(dtree->devs); | |
325 | dm_pool_destroy(dtree->mem); | |
3d0480ed AK |
326 | } |
327 | ||
5c9eae96 AK |
328 | void dm_tree_set_cookie(struct dm_tree_node *node, uint32_t cookie) |
329 | { | |
330 | node->dtree->cookie = cookie; | |
331 | } | |
332 | ||
333 | uint32_t dm_tree_get_cookie(struct dm_tree_node *node) | |
334 | { | |
335 | return node->dtree->cookie; | |
336 | } | |
337 | ||
338 | void dm_tree_skip_lockfs(struct dm_tree_node *dnode) | |
339 | { | |
340 | dnode->dtree->skip_lockfs = 1; | |
341 | } | |
342 | ||
343 | void dm_tree_use_no_flush_suspend(struct dm_tree_node *dnode) | |
344 | { | |
345 | dnode->dtree->no_flush = 1; | |
346 | } | |
347 | ||
348 | void dm_tree_retry_remove(struct dm_tree_node *dnode) | |
349 | { | |
350 | dnode->dtree->retry_remove = 1; | |
351 | } | |
352 | ||
353 | /* | |
354 | * Node functions. | |
355 | */ | |
04bde319 ZK |
356 | static int _nodes_are_linked(const struct dm_tree_node *parent, |
357 | const struct dm_tree_node *child) | |
3d0480ed | 358 | { |
b4f1578f | 359 | struct dm_tree_link *dlink; |
3d0480ed | 360 | |
2c44337b | 361 | dm_list_iterate_items(dlink, &parent->uses) |
3d0480ed AK |
362 | if (dlink->node == child) |
363 | return 1; | |
3d0480ed AK |
364 | |
365 | return 0; | |
366 | } | |
367 | ||
2c44337b | 368 | static int _link(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 369 | { |
b4f1578f | 370 | struct dm_tree_link *dlink; |
3d0480ed | 371 | |
b4f1578f AK |
372 | if (!(dlink = dm_pool_alloc(node->dtree->mem, sizeof(*dlink)))) { |
373 | log_error("dtree link allocation failed"); | |
3d0480ed AK |
374 | return 0; |
375 | } | |
376 | ||
377 | dlink->node = node; | |
2c44337b | 378 | dm_list_add(list, &dlink->list); |
3d0480ed AK |
379 | |
380 | return 1; | |
381 | } | |
382 | ||
b4f1578f AK |
383 | static int _link_nodes(struct dm_tree_node *parent, |
384 | struct dm_tree_node *child) | |
3d0480ed AK |
385 | { |
386 | if (_nodes_are_linked(parent, child)) | |
387 | return 1; | |
388 | ||
389 | if (!_link(&parent->uses, child)) | |
390 | return 0; | |
391 | ||
392 | if (!_link(&child->used_by, parent)) | |
393 | return 0; | |
394 | ||
395 | return 1; | |
396 | } | |
397 | ||
2c44337b | 398 | static void _unlink(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 399 | { |
b4f1578f | 400 | struct dm_tree_link *dlink; |
3d0480ed | 401 | |
2c44337b | 402 | dm_list_iterate_items(dlink, list) |
3d0480ed | 403 | if (dlink->node == node) { |
2c44337b | 404 | dm_list_del(&dlink->list); |
3d0480ed AK |
405 | break; |
406 | } | |
3d0480ed AK |
407 | } |
408 | ||
b4f1578f AK |
409 | static void _unlink_nodes(struct dm_tree_node *parent, |
410 | struct dm_tree_node *child) | |
3d0480ed AK |
411 | { |
412 | if (!_nodes_are_linked(parent, child)) | |
413 | return; | |
414 | ||
415 | _unlink(&parent->uses, child); | |
416 | _unlink(&child->used_by, parent); | |
417 | } | |
418 | ||
b4f1578f | 419 | static int _add_to_toplevel(struct dm_tree_node *node) |
165e4a11 | 420 | { |
b4f1578f | 421 | return _link_nodes(&node->dtree->root, node); |
165e4a11 AK |
422 | } |
423 | ||
b4f1578f | 424 | static void _remove_from_toplevel(struct dm_tree_node *node) |
3d0480ed | 425 | { |
b1ebf028 | 426 | _unlink_nodes(&node->dtree->root, node); |
3d0480ed AK |
427 | } |
428 | ||
b4f1578f | 429 | static int _add_to_bottomlevel(struct dm_tree_node *node) |
3d0480ed | 430 | { |
b4f1578f | 431 | return _link_nodes(node, &node->dtree->root); |
3d0480ed AK |
432 | } |
433 | ||
b4f1578f | 434 | static void _remove_from_bottomlevel(struct dm_tree_node *node) |
165e4a11 | 435 | { |
b1ebf028 | 436 | _unlink_nodes(node, &node->dtree->root); |
165e4a11 AK |
437 | } |
438 | ||
b4f1578f | 439 | static int _link_tree_nodes(struct dm_tree_node *parent, struct dm_tree_node *child) |
165e4a11 AK |
440 | { |
441 | /* Don't link to root node if child already has a parent */ | |
f77736ca | 442 | if (parent == &parent->dtree->root) { |
b4f1578f | 443 | if (dm_tree_node_num_children(child, 1)) |
165e4a11 AK |
444 | return 1; |
445 | } else | |
446 | _remove_from_toplevel(child); | |
447 | ||
f77736ca | 448 | if (child == &child->dtree->root) { |
b4f1578f | 449 | if (dm_tree_node_num_children(parent, 0)) |
165e4a11 AK |
450 | return 1; |
451 | } else | |
452 | _remove_from_bottomlevel(parent); | |
453 | ||
454 | return _link_nodes(parent, child); | |
455 | } | |
456 | ||
b4f1578f | 457 | static struct dm_tree_node *_create_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
458 | const char *name, |
459 | const char *uuid, | |
165e4a11 | 460 | struct dm_info *info, |
f16aea9e PR |
461 | void *context, |
462 | uint16_t udev_flags) | |
3d0480ed | 463 | { |
b4f1578f | 464 | struct dm_tree_node *node; |
3d0480ed AK |
465 | uint64_t dev; |
466 | ||
b4f1578f AK |
467 | if (!(node = dm_pool_zalloc(dtree->mem, sizeof(*node)))) { |
468 | log_error("_create_dm_tree_node alloc failed"); | |
3d0480ed AK |
469 | return NULL; |
470 | } | |
471 | ||
b4f1578f | 472 | node->dtree = dtree; |
3d0480ed AK |
473 | |
474 | node->name = name; | |
475 | node->uuid = uuid; | |
476 | node->info = *info; | |
165e4a11 | 477 | node->context = context; |
f16aea9e | 478 | node->udev_flags = udev_flags; |
56c28292 | 479 | node->activation_priority = 0; |
3d0480ed | 480 | |
2c44337b AK |
481 | dm_list_init(&node->uses); |
482 | dm_list_init(&node->used_by); | |
483 | dm_list_init(&node->props.segs); | |
3d0480ed AK |
484 | |
485 | dev = MKDEV(info->major, info->minor); | |
486 | ||
b4f1578f | 487 | if (!dm_hash_insert_binary(dtree->devs, (const char *) &dev, |
3d0480ed | 488 | sizeof(dev), node)) { |
b4f1578f AK |
489 | log_error("dtree node hash insertion failed"); |
490 | dm_pool_free(dtree->mem, node); | |
3d0480ed AK |
491 | return NULL; |
492 | } | |
493 | ||
165e4a11 | 494 | if (uuid && *uuid && |
b4f1578f AK |
495 | !dm_hash_insert(dtree->uuids, uuid, node)) { |
496 | log_error("dtree uuid hash insertion failed"); | |
497 | dm_hash_remove_binary(dtree->devs, (const char *) &dev, | |
165e4a11 | 498 | sizeof(dev)); |
b4f1578f | 499 | dm_pool_free(dtree->mem, node); |
165e4a11 AK |
500 | return NULL; |
501 | } | |
502 | ||
3d0480ed AK |
503 | return node; |
504 | } | |
505 | ||
b4f1578f | 506 | static struct dm_tree_node *_find_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
507 | uint32_t major, uint32_t minor) |
508 | { | |
509 | uint64_t dev = MKDEV(major, minor); | |
510 | ||
b4f1578f | 511 | return dm_hash_lookup_binary(dtree->devs, (const char *) &dev, |
3d0480ed AK |
512 | sizeof(dev)); |
513 | } | |
514 | ||
b4f1578f | 515 | static struct dm_tree_node *_find_dm_tree_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
516 | const char *uuid) |
517 | { | |
87f98002 | 518 | struct dm_tree_node *node; |
2e5ff5d1 AK |
519 | const char *default_uuid_prefix; |
520 | size_t default_uuid_prefix_len; | |
87f98002 AK |
521 | |
522 | if ((node = dm_hash_lookup(dtree->uuids, uuid))) | |
523 | return node; | |
524 | ||
2e5ff5d1 AK |
525 | default_uuid_prefix = dm_uuid_prefix(); |
526 | default_uuid_prefix_len = strlen(default_uuid_prefix); | |
527 | ||
528 | if (strncmp(uuid, default_uuid_prefix, default_uuid_prefix_len)) | |
87f98002 AK |
529 | return NULL; |
530 | ||
2e5ff5d1 | 531 | return dm_hash_lookup(dtree->uuids, uuid + default_uuid_prefix_len); |
165e4a11 AK |
532 | } |
533 | ||
5c9eae96 AK |
534 | void dm_tree_node_set_udev_flags(struct dm_tree_node *dnode, uint16_t udev_flags) |
535 | ||
536 | { | |
537 | struct dm_info *dinfo = &dnode->info; | |
538 | ||
539 | if (udev_flags != dnode->udev_flags) | |
540 | log_debug("Resetting %s (%" PRIu32 ":%" PRIu32 | |
541 | ") udev_flags from 0x%x to 0x%x", | |
542 | dnode->name, dinfo->major, dinfo->minor, | |
543 | dnode->udev_flags, udev_flags); | |
544 | dnode->udev_flags = udev_flags; | |
545 | } | |
546 | ||
547 | void dm_tree_node_set_read_ahead(struct dm_tree_node *dnode, | |
548 | uint32_t read_ahead, | |
549 | uint32_t read_ahead_flags) | |
550 | { | |
551 | dnode->props.read_ahead = read_ahead; | |
552 | dnode->props.read_ahead_flags = read_ahead_flags; | |
553 | } | |
554 | ||
555 | void dm_tree_node_set_presuspend_node(struct dm_tree_node *node, | |
556 | struct dm_tree_node *presuspend_node) | |
557 | { | |
558 | node->presuspend_node = presuspend_node; | |
559 | } | |
560 | ||
561 | const char *dm_tree_node_get_name(const struct dm_tree_node *node) | |
562 | { | |
563 | return node->info.exists ? node->name : ""; | |
564 | } | |
565 | ||
566 | const char *dm_tree_node_get_uuid(const struct dm_tree_node *node) | |
567 | { | |
568 | return node->info.exists ? node->uuid : ""; | |
569 | } | |
570 | ||
571 | const struct dm_info *dm_tree_node_get_info(const struct dm_tree_node *node) | |
572 | { | |
573 | return &node->info; | |
574 | } | |
575 | ||
576 | void *dm_tree_node_get_context(const struct dm_tree_node *node) | |
577 | { | |
578 | return node->context; | |
579 | } | |
580 | ||
581 | int dm_tree_node_size_changed(const struct dm_tree_node *dnode) | |
582 | { | |
583 | return dnode->props.size_changed; | |
584 | } | |
585 | ||
586 | int dm_tree_node_num_children(const struct dm_tree_node *node, uint32_t inverted) | |
587 | { | |
588 | if (inverted) { | |
589 | if (_nodes_are_linked(&node->dtree->root, node)) | |
590 | return 0; | |
591 | return dm_list_size(&node->used_by); | |
592 | } | |
593 | ||
594 | if (_nodes_are_linked(node, &node->dtree->root)) | |
595 | return 0; | |
596 | ||
597 | return dm_list_size(&node->uses); | |
598 | } | |
599 | ||
600 | /* | |
601 | * Returns 1 if no prefix supplied | |
602 | */ | |
603 | static int _uuid_prefix_matches(const char *uuid, const char *uuid_prefix, size_t uuid_prefix_len) | |
604 | { | |
605 | const char *default_uuid_prefix = dm_uuid_prefix(); | |
606 | size_t default_uuid_prefix_len = strlen(default_uuid_prefix); | |
607 | ||
608 | if (!uuid_prefix) | |
609 | return 1; | |
610 | ||
611 | if (!strncmp(uuid, uuid_prefix, uuid_prefix_len)) | |
612 | return 1; | |
613 | ||
614 | /* Handle transition: active device uuids might be missing the prefix */ | |
615 | if (uuid_prefix_len <= 4) | |
616 | return 0; | |
617 | ||
618 | if (!strncmp(uuid, default_uuid_prefix, default_uuid_prefix_len)) | |
619 | return 0; | |
620 | ||
621 | if (strncmp(uuid_prefix, default_uuid_prefix, default_uuid_prefix_len)) | |
622 | return 0; | |
623 | ||
624 | if (!strncmp(uuid, uuid_prefix + default_uuid_prefix_len, uuid_prefix_len - default_uuid_prefix_len)) | |
625 | return 1; | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | /* | |
631 | * Returns 1 if no children. | |
632 | */ | |
633 | static int _children_suspended(struct dm_tree_node *node, | |
634 | uint32_t inverted, | |
635 | const char *uuid_prefix, | |
636 | size_t uuid_prefix_len) | |
637 | { | |
638 | struct dm_list *list; | |
639 | struct dm_tree_link *dlink; | |
640 | const struct dm_info *dinfo; | |
641 | const char *uuid; | |
642 | ||
643 | if (inverted) { | |
644 | if (_nodes_are_linked(&node->dtree->root, node)) | |
645 | return 1; | |
646 | list = &node->used_by; | |
647 | } else { | |
648 | if (_nodes_are_linked(node, &node->dtree->root)) | |
649 | return 1; | |
650 | list = &node->uses; | |
651 | } | |
652 | ||
653 | dm_list_iterate_items(dlink, list) { | |
654 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { | |
655 | stack; | |
656 | continue; | |
657 | } | |
658 | ||
659 | /* Ignore if it doesn't belong to this VG */ | |
660 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) | |
661 | continue; | |
662 | ||
663 | /* Ignore if parent node wants to presuspend this node */ | |
664 | if (dlink->node->presuspend_node == node) | |
665 | continue; | |
666 | ||
667 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { | |
668 | stack; /* FIXME Is this normal? */ | |
669 | return 0; | |
670 | } | |
671 | ||
672 | if (!dinfo->suspended) | |
673 | return 0; | |
674 | } | |
675 | ||
676 | return 1; | |
677 | } | |
678 | ||
679 | /* | |
680 | * Set major and minor to zero for root of tree. | |
681 | */ | |
682 | struct dm_tree_node *dm_tree_find_node(struct dm_tree *dtree, | |
683 | uint32_t major, | |
684 | uint32_t minor) | |
685 | { | |
686 | if (!major && !minor) | |
687 | return &dtree->root; | |
688 | ||
689 | return _find_dm_tree_node(dtree, major, minor); | |
690 | } | |
691 | ||
692 | /* | |
693 | * Set uuid to NULL for root of tree. | |
694 | */ | |
695 | struct dm_tree_node *dm_tree_find_node_by_uuid(struct dm_tree *dtree, | |
696 | const char *uuid) | |
697 | { | |
698 | if (!uuid || !*uuid) | |
699 | return &dtree->root; | |
700 | ||
701 | return _find_dm_tree_node_by_uuid(dtree, uuid); | |
702 | } | |
703 | ||
704 | /* | |
705 | * First time set *handle to NULL. | |
706 | * Set inverted to invert the tree. | |
707 | */ | |
708 | struct dm_tree_node *dm_tree_next_child(void **handle, | |
709 | const struct dm_tree_node *parent, | |
710 | uint32_t inverted) | |
711 | { | |
712 | struct dm_list **dlink = (struct dm_list **) handle; | |
713 | const struct dm_list *use_list; | |
714 | ||
715 | if (inverted) | |
716 | use_list = &parent->used_by; | |
717 | else | |
718 | use_list = &parent->uses; | |
719 | ||
720 | if (!*dlink) | |
721 | *dlink = dm_list_first(use_list); | |
722 | else | |
723 | *dlink = dm_list_next(use_list, *dlink); | |
724 | ||
725 | return (*dlink) ? dm_list_item(*dlink, struct dm_tree_link)->node : NULL; | |
726 | } | |
727 | ||
a3f6b2ce | 728 | static int _deps(struct dm_task **dmt, struct dm_pool *mem, uint32_t major, uint32_t minor, |
2e5ff5d1 | 729 | const char **name, const char **uuid, unsigned inactive_table, |
3d0480ed AK |
730 | struct dm_info *info, struct dm_deps **deps) |
731 | { | |
732 | memset(info, 0, sizeof(*info)); | |
733 | ||
734 | if (!dm_is_dm_major(major)) { | |
2e5ff5d1 AK |
735 | if (name) |
736 | *name = ""; | |
737 | if (uuid) | |
738 | *uuid = ""; | |
3d0480ed AK |
739 | *deps = NULL; |
740 | info->major = major; | |
741 | info->minor = minor; | |
742 | info->exists = 0; | |
165e4a11 AK |
743 | info->live_table = 0; |
744 | info->inactive_table = 0; | |
745 | info->read_only = 0; | |
3d0480ed AK |
746 | return 1; |
747 | } | |
748 | ||
749 | if (!(*dmt = dm_task_create(DM_DEVICE_DEPS))) { | |
750 | log_error("deps dm_task creation failed"); | |
751 | return 0; | |
752 | } | |
753 | ||
b4f1578f AK |
754 | if (!dm_task_set_major(*dmt, major)) { |
755 | log_error("_deps: failed to set major for (%" PRIu32 ":%" PRIu32 ")", | |
756 | major, minor); | |
3d0480ed | 757 | goto failed; |
b4f1578f | 758 | } |
3d0480ed | 759 | |
b4f1578f AK |
760 | if (!dm_task_set_minor(*dmt, minor)) { |
761 | log_error("_deps: failed to set minor for (%" PRIu32 ":%" PRIu32 ")", | |
762 | major, minor); | |
3d0480ed | 763 | goto failed; |
b4f1578f | 764 | } |
3d0480ed | 765 | |
2e5ff5d1 AK |
766 | if (inactive_table && !dm_task_query_inactive_table(*dmt)) { |
767 | log_error("_deps: failed to set inactive table for (%" PRIu32 ":%" PRIu32 ")", | |
768 | major, minor); | |
769 | goto failed; | |
770 | } | |
771 | ||
b4f1578f AK |
772 | if (!dm_task_run(*dmt)) { |
773 | log_error("_deps: task run failed for (%" PRIu32 ":%" PRIu32 ")", | |
774 | major, minor); | |
3d0480ed | 775 | goto failed; |
b4f1578f | 776 | } |
3d0480ed | 777 | |
b4f1578f AK |
778 | if (!dm_task_get_info(*dmt, info)) { |
779 | log_error("_deps: failed to get info for (%" PRIu32 ":%" PRIu32 ")", | |
780 | major, minor); | |
3d0480ed | 781 | goto failed; |
b4f1578f | 782 | } |
3d0480ed AK |
783 | |
784 | if (!info->exists) { | |
2e5ff5d1 AK |
785 | if (name) |
786 | *name = ""; | |
787 | if (uuid) | |
788 | *uuid = ""; | |
3d0480ed AK |
789 | *deps = NULL; |
790 | } else { | |
791 | if (info->major != major) { | |
b4f1578f | 792 | log_error("Inconsistent dtree major number: %u != %u", |
3d0480ed AK |
793 | major, info->major); |
794 | goto failed; | |
795 | } | |
796 | if (info->minor != minor) { | |
b4f1578f | 797 | log_error("Inconsistent dtree minor number: %u != %u", |
3d0480ed AK |
798 | minor, info->minor); |
799 | goto failed; | |
800 | } | |
2e5ff5d1 | 801 | if (name && !(*name = dm_pool_strdup(mem, dm_task_get_name(*dmt)))) { |
3d0480ed AK |
802 | log_error("name pool_strdup failed"); |
803 | goto failed; | |
804 | } | |
2e5ff5d1 | 805 | if (uuid && !(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(*dmt)))) { |
3d0480ed AK |
806 | log_error("uuid pool_strdup failed"); |
807 | goto failed; | |
808 | } | |
809 | *deps = dm_task_get_deps(*dmt); | |
810 | } | |
811 | ||
812 | return 1; | |
813 | ||
814 | failed: | |
815 | dm_task_destroy(*dmt); | |
816 | return 0; | |
817 | } | |
818 | ||
5c9eae96 AK |
819 | /* |
820 | * Deactivate a device with its dependencies if the uuid prefix matches. | |
821 | */ | |
822 | static int _info_by_dev(uint32_t major, uint32_t minor, int with_open_count, | |
823 | struct dm_info *info, struct dm_pool *mem, | |
824 | const char **name, const char **uuid) | |
3d0480ed | 825 | { |
5c9eae96 AK |
826 | struct dm_task *dmt; |
827 | int r; | |
3d0480ed | 828 | |
5c9eae96 AK |
829 | if (!(dmt = dm_task_create(DM_DEVICE_INFO))) { |
830 | log_error("_info_by_dev: dm_task creation failed"); | |
831 | return 0; | |
3d0480ed AK |
832 | } |
833 | ||
5c9eae96 AK |
834 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { |
835 | log_error("_info_by_dev: Failed to set device number"); | |
836 | dm_task_destroy(dmt); | |
837 | return 0; | |
838 | } | |
839 | ||
840 | if (!with_open_count && !dm_task_no_open_count(dmt)) | |
841 | log_error("Failed to disable open_count"); | |
842 | ||
843 | if (!(r = dm_task_run(dmt))) | |
844 | goto_out; | |
845 | ||
846 | if (!(r = dm_task_get_info(dmt, info))) | |
847 | goto_out; | |
848 | ||
849 | if (name && !(*name = dm_pool_strdup(mem, dm_task_get_name(dmt)))) { | |
850 | log_error("name pool_strdup failed"); | |
851 | r = 0; | |
b4f1578f | 852 | goto_out; |
165e4a11 | 853 | } |
3d0480ed | 854 | |
5c9eae96 AK |
855 | if (uuid && !(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(dmt)))) { |
856 | log_error("uuid pool_strdup failed"); | |
857 | r = 0; | |
858 | goto_out; | |
859 | } | |
3d0480ed | 860 | |
5c9eae96 AK |
861 | out: |
862 | dm_task_destroy(dmt); | |
863 | ||
864 | return r; | |
865 | } | |
866 | ||
867 | static int _check_device_not_in_use(const char *name, struct dm_info *info) | |
868 | { | |
869 | if (!info->exists) | |
870 | return 1; | |
871 | ||
872 | /* If sysfs is not used, use open_count information only. */ | |
873 | if (!*dm_sysfs_dir()) { | |
874 | if (info->open_count) { | |
875 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") in use", | |
876 | name, info->major, info->minor); | |
877 | return 0; | |
878 | } | |
879 | ||
880 | return 1; | |
881 | } | |
882 | ||
883 | if (dm_device_has_holders(info->major, info->minor)) { | |
884 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") is used " | |
885 | "by another device.", name, info->major, info->minor); | |
886 | return 0; | |
887 | } | |
888 | ||
889 | if (dm_device_has_mounted_fs(info->major, info->minor)) { | |
890 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") contains " | |
891 | "a filesystem in use.", name, info->major, info->minor); | |
892 | return 0; | |
893 | } | |
894 | ||
895 | return 1; | |
896 | } | |
897 | ||
898 | /* Check if all parent nodes of given node have open_count == 0 */ | |
899 | static int _node_has_closed_parents(struct dm_tree_node *node, | |
900 | const char *uuid_prefix, | |
901 | size_t uuid_prefix_len) | |
902 | { | |
903 | struct dm_tree_link *dlink; | |
904 | const struct dm_info *dinfo; | |
905 | struct dm_info info; | |
906 | const char *uuid; | |
907 | ||
908 | /* Iterate through parents of this node */ | |
909 | dm_list_iterate_items(dlink, &node->used_by) { | |
910 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { | |
b4f1578f | 911 | stack; |
5c9eae96 | 912 | continue; |
b4f1578f | 913 | } |
5c9eae96 AK |
914 | |
915 | /* Ignore if it doesn't belong to this VG */ | |
916 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) | |
917 | continue; | |
918 | ||
919 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { | |
920 | stack; /* FIXME Is this normal? */ | |
921 | return 0; | |
922 | } | |
923 | ||
924 | /* Refresh open_count */ | |
925 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info, NULL, NULL, NULL) || | |
926 | !info.exists) | |
927 | continue; | |
928 | ||
929 | if (info.open_count) { | |
930 | log_debug("Node %s %d:%d has open_count %d", uuid_prefix, | |
931 | dinfo->major, dinfo->minor, info.open_count); | |
932 | return 0; | |
933 | } | |
934 | } | |
935 | ||
936 | return 1; | |
937 | } | |
938 | ||
939 | static int _deactivate_node(const char *name, uint32_t major, uint32_t minor, | |
940 | uint32_t *cookie, uint16_t udev_flags, int retry) | |
941 | { | |
942 | struct dm_task *dmt; | |
943 | int r = 0; | |
944 | ||
945 | log_verbose("Removing %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
946 | ||
947 | if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) { | |
948 | log_error("Deactivation dm_task creation failed for %s", name); | |
949 | return 0; | |
950 | } | |
951 | ||
952 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
953 | log_error("Failed to set device number for %s deactivation", name); | |
165e4a11 | 954 | goto out; |
3d0480ed AK |
955 | } |
956 | ||
5c9eae96 AK |
957 | if (!dm_task_no_open_count(dmt)) |
958 | log_error("Failed to disable open_count"); | |
959 | ||
960 | if (cookie) | |
961 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) | |
962 | goto out; | |
963 | ||
964 | if (retry) | |
965 | dm_task_retry_remove(dmt); | |
966 | ||
967 | r = dm_task_run(dmt); | |
968 | ||
969 | /* FIXME Until kernel returns actual name so dm-iface.c can handle it */ | |
970 | rm_dev_node(name, dmt->cookie_set && !(udev_flags & DM_UDEV_DISABLE_DM_RULES_FLAG), | |
971 | dmt->cookie_set && (udev_flags & DM_UDEV_DISABLE_LIBRARY_FALLBACK)); | |
972 | ||
973 | /* FIXME Remove node from tree or mark invalid? */ | |
3d0480ed | 974 | |
3d0480ed | 975 | out: |
5c9eae96 | 976 | dm_task_destroy(dmt); |
3d0480ed | 977 | |
5c9eae96 | 978 | return r; |
165e4a11 AK |
979 | } |
980 | ||
2e5ff5d1 | 981 | static int _node_clear_table(struct dm_tree_node *dnode, uint16_t udev_flags) |
165e4a11 | 982 | { |
2e5ff5d1 AK |
983 | struct dm_task *dmt = NULL, *deps_dmt = NULL; |
984 | struct dm_info *info, deps_info; | |
985 | struct dm_deps *deps = NULL; | |
986 | const char *name, *uuid; | |
987 | const char *default_uuid_prefix; | |
988 | size_t default_uuid_prefix_len; | |
989 | uint32_t i; | |
990 | int r = 0; | |
165e4a11 AK |
991 | |
992 | if (!(info = &dnode->info)) { | |
b4f1578f | 993 | log_error("_node_clear_table failed: missing info"); |
165e4a11 AK |
994 | return 0; |
995 | } | |
996 | ||
b4f1578f AK |
997 | if (!(name = dm_tree_node_get_name(dnode))) { |
998 | log_error("_node_clear_table failed: missing name"); | |
165e4a11 AK |
999 | return 0; |
1000 | } | |
1001 | ||
1002 | /* Is there a table? */ | |
1003 | if (!info->exists || !info->inactive_table) | |
1004 | return 1; | |
1005 | ||
2e5ff5d1 AK |
1006 | /* Get devices used by inactive table that's about to be deleted. */ |
1007 | if (!_deps(&deps_dmt, dnode->dtree->mem, info->major, info->minor, NULL, NULL, 1, info, &deps)) { | |
1008 | log_error("Failed to obtain dependencies for %s before clearing table.", name); | |
1009 | return 0; | |
1010 | } | |
10d0d9c7 | 1011 | |
165e4a11 AK |
1012 | log_verbose("Clearing inactive table %s (%" PRIu32 ":%" PRIu32 ")", |
1013 | name, info->major, info->minor); | |
1014 | ||
1015 | if (!(dmt = dm_task_create(DM_DEVICE_CLEAR))) { | |
165e4a11 | 1016 | log_error("Table clear dm_task creation failed for %s", name); |
2e5ff5d1 | 1017 | goto_out; |
165e4a11 AK |
1018 | } |
1019 | ||
1020 | if (!dm_task_set_major(dmt, info->major) || | |
1021 | !dm_task_set_minor(dmt, info->minor)) { | |
1022 | log_error("Failed to set device number for %s table clear", name); | |
2e5ff5d1 | 1023 | goto_out; |
165e4a11 AK |
1024 | } |
1025 | ||
1026 | r = dm_task_run(dmt); | |
1027 | ||
1028 | if (!dm_task_get_info(dmt, info)) { | |
b4f1578f | 1029 | log_error("_node_clear_table failed: info missing after running task for %s", name); |
165e4a11 AK |
1030 | r = 0; |
1031 | } | |
1032 | ||
2e5ff5d1 AK |
1033 | if (!r || !deps) |
1034 | goto_out; | |
1035 | ||
1036 | /* | |
1037 | * Remove (incomplete) devices that the inactive table referred to but | |
1038 | * which are not in the tree, no longer referenced and don't have a live | |
1039 | * table. | |
1040 | */ | |
1041 | default_uuid_prefix = dm_uuid_prefix(); | |
1042 | default_uuid_prefix_len = strlen(default_uuid_prefix); | |
1043 | ||
1044 | for (i = 0; i < deps->count; i++) { | |
1045 | /* If already in tree, assume it's under control */ | |
1046 | if (_find_dm_tree_node(dnode->dtree, MAJOR(deps->device[i]), MINOR(deps->device[i]))) | |
5c9eae96 | 1047 | continue; |
db208f51 | 1048 | |
5c9eae96 AK |
1049 | if (!_info_by_dev(MAJOR(deps->device[i]), MINOR(deps->device[i]), 1, |
1050 | &deps_info, dnode->dtree->mem, &name, &uuid)) | |
1051 | continue; | |
2e5ff5d1 | 1052 | |
5c9eae96 AK |
1053 | /* Proceed if device is an 'orphan' - unreferenced and without a live table. */ |
1054 | if (!deps_info.exists || deps_info.live_table || deps_info.open_count) | |
1055 | continue; | |
3e8c6b73 | 1056 | |
5c9eae96 AK |
1057 | if (strncmp(uuid, default_uuid_prefix, default_uuid_prefix_len)) |
1058 | continue; | |
2e5ff5d1 | 1059 | |
5c9eae96 AK |
1060 | /* Remove device. */ |
1061 | if (!_deactivate_node(name, deps_info.major, deps_info.minor, &dnode->dtree->cookie, udev_flags, 0)) { | |
1062 | log_error("Failed to deactivate no-longer-used device %s (%" | |
1063 | PRIu32 ":%" PRIu32 ")", name, deps_info.major, deps_info.minor); | |
1064 | } else if (deps_info.suspended) | |
1065 | dec_suspended(); | |
2e5ff5d1 AK |
1066 | } |
1067 | ||
1068 | out: | |
5c9eae96 AK |
1069 | if (dmt) |
1070 | dm_task_destroy(dmt); | |
1071 | ||
1072 | if (deps_dmt) | |
1073 | dm_task_destroy(deps_dmt); | |
3e8c6b73 AK |
1074 | |
1075 | return r; | |
1076 | } | |
1077 | ||
5c9eae96 AK |
1078 | struct dm_tree_node *dm_tree_add_new_dev_with_udev_flags(struct dm_tree *dtree, |
1079 | const char *name, | |
1080 | const char *uuid, | |
1081 | uint32_t major, | |
1082 | uint32_t minor, | |
1083 | int read_only, | |
1084 | int clear_inactive, | |
1085 | void *context, | |
1086 | uint16_t udev_flags) | |
125712be | 1087 | { |
5c9eae96 AK |
1088 | struct dm_tree_node *dnode; |
1089 | struct dm_info info; | |
1090 | const char *name2; | |
1091 | const char *uuid2; | |
125712be | 1092 | |
5c9eae96 AK |
1093 | /* Do we need to add node to tree? */ |
1094 | if (!(dnode = dm_tree_find_node_by_uuid(dtree, uuid))) { | |
1095 | if (!(name2 = dm_pool_strdup(dtree->mem, name))) { | |
1096 | log_error("name pool_strdup failed"); | |
1097 | return NULL; | |
1098 | } | |
1099 | if (!(uuid2 = dm_pool_strdup(dtree->mem, uuid))) { | |
1100 | log_error("uuid pool_strdup failed"); | |
1101 | return NULL; | |
c3e5b497 PR |
1102 | } |
1103 | ||
5c9eae96 AK |
1104 | info.major = 0; |
1105 | info.minor = 0; | |
1106 | info.exists = 0; | |
1107 | info.live_table = 0; | |
1108 | info.inactive_table = 0; | |
1109 | info.read_only = 0; | |
125712be | 1110 | |
5c9eae96 AK |
1111 | if (!(dnode = _create_dm_tree_node(dtree, name2, uuid2, &info, |
1112 | context, 0))) | |
1113 | return_NULL; | |
125712be | 1114 | |
5c9eae96 AK |
1115 | /* Attach to root node until a table is supplied */ |
1116 | if (!_add_to_toplevel(dnode) || !_add_to_bottomlevel(dnode)) | |
1117 | return_NULL; | |
f3ef15ef | 1118 | |
5c9eae96 AK |
1119 | dnode->props.major = major; |
1120 | dnode->props.minor = minor; | |
1121 | dnode->props.new_name = NULL; | |
1122 | dnode->props.size_changed = 0; | |
1123 | } else if (strcmp(name, dnode->name)) { | |
1124 | /* Do we need to rename node? */ | |
1125 | if (!(dnode->props.new_name = dm_pool_strdup(dtree->mem, name))) { | |
1126 | log_error("name pool_strdup failed"); | |
1127 | return NULL; | |
f3ef15ef | 1128 | } |
5c9eae96 | 1129 | } |
f3ef15ef | 1130 | |
5c9eae96 AK |
1131 | dnode->props.read_only = read_only ? 1 : 0; |
1132 | dnode->props.read_ahead = DM_READ_AHEAD_AUTO; | |
1133 | dnode->props.read_ahead_flags = 0; | |
f3ef15ef | 1134 | |
5c9eae96 AK |
1135 | if (clear_inactive && !_node_clear_table(dnode, udev_flags)) |
1136 | return_NULL; | |
f3ef15ef | 1137 | |
5c9eae96 AK |
1138 | dnode->context = context; |
1139 | dnode->udev_flags = udev_flags; | |
f3ef15ef | 1140 | |
5c9eae96 AK |
1141 | return dnode; |
1142 | } | |
f3ef15ef | 1143 | |
5c9eae96 AK |
1144 | struct dm_tree_node *dm_tree_add_new_dev(struct dm_tree *dtree, const char *name, |
1145 | const char *uuid, uint32_t major, uint32_t minor, | |
1146 | int read_only, int clear_inactive, void *context) | |
1147 | { | |
1148 | return dm_tree_add_new_dev_with_udev_flags(dtree, name, uuid, major, minor, | |
1149 | read_only, clear_inactive, context, 0); | |
f3ef15ef ZK |
1150 | } |
1151 | ||
5c9eae96 AK |
1152 | static struct dm_tree_node *_add_dev(struct dm_tree *dtree, |
1153 | struct dm_tree_node *parent, | |
1154 | uint32_t major, uint32_t minor, | |
1155 | uint16_t udev_flags) | |
3e8c6b73 | 1156 | { |
5c9eae96 AK |
1157 | struct dm_task *dmt = NULL; |
1158 | struct dm_info info; | |
1159 | struct dm_deps *deps = NULL; | |
1160 | const char *name = NULL; | |
1161 | const char *uuid = NULL; | |
1162 | struct dm_tree_node *node = NULL; | |
1163 | uint32_t i; | |
1164 | int new = 0; | |
3e8c6b73 | 1165 | |
5c9eae96 AK |
1166 | /* Already in tree? */ |
1167 | if (!(node = _find_dm_tree_node(dtree, major, minor))) { | |
1168 | if (!_deps(&dmt, dtree->mem, major, minor, &name, &uuid, 0, &info, &deps)) | |
1169 | return_NULL; | |
3e8c6b73 | 1170 | |
5c9eae96 AK |
1171 | if (!(node = _create_dm_tree_node(dtree, name, uuid, &info, |
1172 | NULL, udev_flags))) | |
1173 | goto_out; | |
1174 | new = 1; | |
3e8c6b73 AK |
1175 | } |
1176 | ||
5c9eae96 AK |
1177 | if (!_link_tree_nodes(parent, node)) { |
1178 | node = NULL; | |
1179 | goto_out; | |
3e8c6b73 AK |
1180 | } |
1181 | ||
5c9eae96 AK |
1182 | /* If node was already in tree, no need to recurse. */ |
1183 | if (!new) | |
1184 | goto out; | |
787200ef | 1185 | |
5c9eae96 AK |
1186 | /* Can't recurse if not a mapped device or there are no dependencies */ |
1187 | if (!node->info.exists || !deps->count) { | |
1188 | if (!_add_to_bottomlevel(node)) { | |
1189 | stack; | |
1190 | node = NULL; | |
1191 | } | |
1192 | goto out; | |
1193 | } | |
787200ef | 1194 | |
5c9eae96 AK |
1195 | /* Add dependencies to tree */ |
1196 | for (i = 0; i < deps->count; i++) | |
1197 | if (!_add_dev(dtree, node, MAJOR(deps->device[i]), | |
1198 | MINOR(deps->device[i]), udev_flags)) { | |
1199 | node = NULL; | |
1200 | goto_out; | |
1201 | } | |
3e8c6b73 | 1202 | |
5c9eae96 AK |
1203 | out: |
1204 | if (dmt) | |
1205 | dm_task_destroy(dmt); | |
165e4a11 | 1206 | |
5c9eae96 AK |
1207 | return node; |
1208 | } | |
db208f51 | 1209 | |
5c9eae96 AK |
1210 | int dm_tree_add_dev(struct dm_tree *dtree, uint32_t major, uint32_t minor) |
1211 | { | |
1212 | return _add_dev(dtree, &dtree->root, major, minor, 0) ? 1 : 0; | |
1213 | } | |
db208f51 | 1214 | |
5c9eae96 AK |
1215 | int dm_tree_add_dev_with_udev_flags(struct dm_tree *dtree, uint32_t major, |
1216 | uint32_t minor, uint16_t udev_flags) | |
1217 | { | |
1218 | return _add_dev(dtree, &dtree->root, major, minor, udev_flags) ? 1 : 0; | |
db208f51 AK |
1219 | } |
1220 | ||
bd90c6b2 | 1221 | static int _rename_node(const char *old_name, const char *new_name, uint32_t major, |
f16aea9e | 1222 | uint32_t minor, uint32_t *cookie, uint16_t udev_flags) |
165e4a11 AK |
1223 | { |
1224 | struct dm_task *dmt; | |
1225 | int r = 0; | |
1226 | ||
1227 | log_verbose("Renaming %s (%" PRIu32 ":%" PRIu32 ") to %s", old_name, major, minor, new_name); | |
1228 | ||
1229 | if (!(dmt = dm_task_create(DM_DEVICE_RENAME))) { | |
1230 | log_error("Rename dm_task creation failed for %s", old_name); | |
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | if (!dm_task_set_name(dmt, old_name)) { | |
1235 | log_error("Failed to set name for %s rename.", old_name); | |
1236 | goto out; | |
1237 | } | |
1238 | ||
b4f1578f | 1239 | if (!dm_task_set_newname(dmt, new_name)) |
40e5fd8b | 1240 | goto_out; |
165e4a11 AK |
1241 | |
1242 | if (!dm_task_no_open_count(dmt)) | |
1243 | log_error("Failed to disable open_count"); | |
1244 | ||
f16aea9e | 1245 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1246 | goto out; |
1247 | ||
165e4a11 AK |
1248 | r = dm_task_run(dmt); |
1249 | ||
1250 | out: | |
1251 | dm_task_destroy(dmt); | |
1252 | ||
1253 | return r; | |
1254 | } | |
1255 | ||
165e4a11 AK |
1256 | /* FIXME Merge with _suspend_node? */ |
1257 | static int _resume_node(const char *name, uint32_t major, uint32_t minor, | |
52b84409 | 1258 | uint32_t read_ahead, uint32_t read_ahead_flags, |
f16aea9e | 1259 | struct dm_info *newinfo, uint32_t *cookie, |
1840aa09 | 1260 | uint16_t udev_flags, int already_suspended) |
165e4a11 AK |
1261 | { |
1262 | struct dm_task *dmt; | |
bd90c6b2 | 1263 | int r = 0; |
165e4a11 AK |
1264 | |
1265 | log_verbose("Resuming %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1266 | ||
1267 | if (!(dmt = dm_task_create(DM_DEVICE_RESUME))) { | |
9a8f192a | 1268 | log_debug("Suspend dm_task creation failed for %s.", name); |
165e4a11 AK |
1269 | return 0; |
1270 | } | |
1271 | ||
0b7d16bc AK |
1272 | /* FIXME Kernel should fill in name on return instead */ |
1273 | if (!dm_task_set_name(dmt, name)) { | |
9a8f192a | 1274 | log_debug("Failed to set device name for %s resumption.", name); |
bd90c6b2 | 1275 | goto out; |
0b7d16bc AK |
1276 | } |
1277 | ||
165e4a11 AK |
1278 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { |
1279 | log_error("Failed to set device number for %s resumption.", name); | |
bd90c6b2 | 1280 | goto out; |
165e4a11 AK |
1281 | } |
1282 | ||
1283 | if (!dm_task_no_open_count(dmt)) | |
1284 | log_error("Failed to disable open_count"); | |
1285 | ||
52b84409 AK |
1286 | if (!dm_task_set_read_ahead(dmt, read_ahead, read_ahead_flags)) |
1287 | log_error("Failed to set read ahead"); | |
1288 | ||
f16aea9e | 1289 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
9a8f192a | 1290 | goto_out; |
bd90c6b2 | 1291 | |
9a8f192a ZK |
1292 | if (!(r = dm_task_run(dmt))) |
1293 | goto_out; | |
1294 | ||
1295 | if (already_suspended) | |
1296 | dec_suspended(); | |
1297 | ||
1298 | if (!(r = dm_task_get_info(dmt, newinfo))) | |
1299 | stack; | |
165e4a11 | 1300 | |
bd90c6b2 | 1301 | out: |
165e4a11 AK |
1302 | dm_task_destroy(dmt); |
1303 | ||
1304 | return r; | |
1305 | } | |
1306 | ||
db208f51 | 1307 | static int _suspend_node(const char *name, uint32_t major, uint32_t minor, |
b9ffd32c | 1308 | int skip_lockfs, int no_flush, struct dm_info *newinfo) |
db208f51 AK |
1309 | { |
1310 | struct dm_task *dmt; | |
1311 | int r; | |
1312 | ||
b9ffd32c AK |
1313 | log_verbose("Suspending %s (%" PRIu32 ":%" PRIu32 ")%s%s", |
1314 | name, major, minor, | |
1315 | skip_lockfs ? "" : " with filesystem sync", | |
6e1898a5 | 1316 | no_flush ? "" : " with device flush"); |
db208f51 AK |
1317 | |
1318 | if (!(dmt = dm_task_create(DM_DEVICE_SUSPEND))) { | |
1319 | log_error("Suspend dm_task creation failed for %s", name); | |
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1324 | log_error("Failed to set device number for %s suspension.", name); | |
1325 | dm_task_destroy(dmt); | |
1326 | return 0; | |
1327 | } | |
1328 | ||
1329 | if (!dm_task_no_open_count(dmt)) | |
1330 | log_error("Failed to disable open_count"); | |
1331 | ||
c55b1410 AK |
1332 | if (skip_lockfs && !dm_task_skip_lockfs(dmt)) |
1333 | log_error("Failed to set skip_lockfs flag."); | |
1334 | ||
b9ffd32c AK |
1335 | if (no_flush && !dm_task_no_flush(dmt)) |
1336 | log_error("Failed to set no_flush flag."); | |
1337 | ||
1840aa09 AK |
1338 | if ((r = dm_task_run(dmt))) { |
1339 | inc_suspended(); | |
db208f51 | 1340 | r = dm_task_get_info(dmt, newinfo); |
1840aa09 | 1341 | } |
db208f51 | 1342 | |
3e8c6b73 AK |
1343 | dm_task_destroy(dmt); |
1344 | ||
1345 | return r; | |
1346 | } | |
1347 | ||
25e6ab87 | 1348 | static int _thin_pool_status_transaction_id(struct dm_tree_node *dnode, uint64_t *transaction_id) |
e0ea24be ZK |
1349 | { |
1350 | struct dm_task *dmt; | |
1351 | int r = 0; | |
1352 | uint64_t start, length; | |
1353 | char *type = NULL; | |
1354 | char *params = NULL; | |
e0ea24be | 1355 | |
25e6ab87 ZK |
1356 | if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) |
1357 | return_0; | |
e0ea24be | 1358 | |
25e6ab87 ZK |
1359 | if (!dm_task_set_major(dmt, dnode->info.major) || |
1360 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
1361 | log_error("Failed to set major minor."); | |
1362 | goto out; | |
e0ea24be ZK |
1363 | } |
1364 | ||
25e6ab87 ZK |
1365 | if (!dm_task_run(dmt)) |
1366 | goto_out; | |
1367 | ||
1368 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); | |
1369 | ||
1370 | if (type && (strcmp(type, "thin-pool") != 0)) { | |
c590a9cd | 1371 | log_error("Expected thin-pool target for %d:%d and got %s.", |
25e6ab87 | 1372 | dnode->info.major, dnode->info.minor, type); |
e0ea24be ZK |
1373 | goto out; |
1374 | } | |
1375 | ||
25e6ab87 | 1376 | if (!params || (sscanf(params, "%" PRIu64, transaction_id) != 1)) { |
c590a9cd | 1377 | log_error("Failed to parse transaction_id from %s.", params); |
e0ea24be ZK |
1378 | goto out; |
1379 | } | |
1380 | ||
25e6ab87 | 1381 | log_debug("Thin pool transaction id: %" PRIu64 " status: %s.", *transaction_id, params); |
e0ea24be | 1382 | |
25e6ab87 ZK |
1383 | r = 1; |
1384 | out: | |
1385 | dm_task_destroy(dmt); | |
e0ea24be | 1386 | |
25e6ab87 ZK |
1387 | return r; |
1388 | } | |
e0ea24be | 1389 | |
25e6ab87 ZK |
1390 | static int _thin_pool_node_message(struct dm_tree_node *dnode, struct thin_message *tm) |
1391 | { | |
1392 | struct dm_task *dmt; | |
1393 | struct dm_thin_message *m = &tm->message; | |
1394 | char buf[64]; | |
1395 | int r; | |
e0ea24be | 1396 | |
25e6ab87 ZK |
1397 | switch (m->type) { |
1398 | case DM_THIN_MESSAGE_CREATE_SNAP: | |
1399 | r = dm_snprintf(buf, sizeof(buf), "create_snap %u %u", | |
1400 | m->u.m_create_snap.device_id, | |
1401 | m->u.m_create_snap.origin_id); | |
1402 | break; | |
1403 | case DM_THIN_MESSAGE_CREATE_THIN: | |
1404 | r = dm_snprintf(buf, sizeof(buf), "create_thin %u", | |
1405 | m->u.m_create_thin.device_id); | |
1406 | break; | |
1407 | case DM_THIN_MESSAGE_DELETE: | |
1408 | r = dm_snprintf(buf, sizeof(buf), "delete %u", | |
1409 | m->u.m_delete.device_id); | |
1410 | break; | |
1411 | case DM_THIN_MESSAGE_TRIM: | |
1412 | r = dm_snprintf(buf, sizeof(buf), "trim %u %" PRIu64, | |
1413 | m->u.m_trim.device_id, | |
1414 | m->u.m_trim.new_size); | |
1415 | break; | |
1416 | case DM_THIN_MESSAGE_SET_TRANSACTION_ID: | |
1417 | r = dm_snprintf(buf, sizeof(buf), | |
1418 | "set_transaction_id %" PRIu64 " %" PRIu64, | |
1419 | m->u.m_set_transaction_id.current_id, | |
1420 | m->u.m_set_transaction_id.new_id); | |
1421 | break; | |
25de9add ZK |
1422 | default: |
1423 | r = -1; | |
25e6ab87 ZK |
1424 | } |
1425 | ||
25de9add | 1426 | if (r < 0) { |
25e6ab87 ZK |
1427 | log_error("Failed to prepare message."); |
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | r = 0; | |
1432 | ||
1433 | if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG))) | |
1434 | return_0; | |
1435 | ||
1436 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
1437 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
1438 | log_error("Failed to set message major minor."); | |
1439 | goto out; | |
1440 | } | |
1441 | ||
1442 | if (!dm_task_set_message(dmt, buf)) | |
1443 | goto_out; | |
1444 | ||
660a42bc ZK |
1445 | /* Internal functionality of dm_task */ |
1446 | dmt->expected_errno = tm->expected_errno; | |
1447 | ||
25e6ab87 ZK |
1448 | if (!dm_task_run(dmt)) |
1449 | goto_out; | |
1450 | ||
1451 | r = 1; | |
e0ea24be ZK |
1452 | out: |
1453 | dm_task_destroy(dmt); | |
1454 | ||
1455 | return r; | |
1456 | } | |
1457 | ||
11f64f0a ZK |
1458 | static int _node_send_messages(struct dm_tree_node *dnode, |
1459 | const char *uuid_prefix, | |
1460 | size_t uuid_prefix_len) | |
25e6ab87 ZK |
1461 | { |
1462 | struct load_segment *seg; | |
1463 | struct thin_message *tmsg; | |
11f64f0a | 1464 | uint64_t trans_id; |
25e6ab87 ZK |
1465 | const char *uuid; |
1466 | ||
bbcd37e4 | 1467 | if (!dnode->info.exists || (dm_list_size(&dnode->props.segs) != 1)) |
25e6ab87 ZK |
1468 | return 1; |
1469 | ||
1470 | seg = dm_list_item(dm_list_last(&dnode->props.segs), struct load_segment); | |
25e6ab87 ZK |
1471 | if (seg->type != SEG_THIN_POOL) |
1472 | return 1; | |
1473 | ||
1474 | if (!(uuid = dm_tree_node_get_uuid(dnode))) | |
1475 | return_0; | |
1476 | ||
1477 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) { | |
1478 | log_debug("UUID \"%s\" does not match.", uuid); | |
1479 | return 1; | |
1480 | } | |
1481 | ||
11f64f0a | 1482 | if (!_thin_pool_status_transaction_id(dnode, &trans_id)) |
bbcd37e4 | 1483 | goto_bad; |
25e6ab87 | 1484 | |
bbcd37e4 | 1485 | if (trans_id == seg->transaction_id) |
25e6ab87 ZK |
1486 | return 1; /* In sync - skip messages */ |
1487 | ||
bbcd37e4 | 1488 | if (trans_id != (seg->transaction_id - 1)) { |
25e6ab87 | 1489 | log_error("Thin pool transaction_id=%" PRIu64 ", while expected: %" PRIu64 ".", |
bbcd37e4 ZK |
1490 | trans_id, seg->transaction_id - 1); |
1491 | goto bad; /* Nothing to send */ | |
25e6ab87 ZK |
1492 | } |
1493 | ||
1494 | dm_list_iterate_items(tmsg, &seg->thin_messages) | |
1495 | if (!(_thin_pool_node_message(dnode, tmsg))) | |
bbcd37e4 | 1496 | goto_bad; |
25e6ab87 ZK |
1497 | |
1498 | return 1; | |
bbcd37e4 ZK |
1499 | bad: |
1500 | /* Try to deactivate */ | |
1501 | if (!(dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len))) | |
1502 | log_error("Failed to deactivate %s", dnode->name); | |
1503 | ||
1504 | return 0; | |
25e6ab87 ZK |
1505 | } |
1506 | ||
18e0f934 AK |
1507 | /* |
1508 | * FIXME Don't attempt to deactivate known internal dependencies. | |
1509 | */ | |
1510 | static int _dm_tree_deactivate_children(struct dm_tree_node *dnode, | |
1511 | const char *uuid_prefix, | |
1512 | size_t uuid_prefix_len, | |
1513 | unsigned level) | |
3e8c6b73 | 1514 | { |
b7eb2ad0 | 1515 | int r = 1; |
3e8c6b73 | 1516 | void *handle = NULL; |
b4f1578f | 1517 | struct dm_tree_node *child = dnode; |
3e8c6b73 AK |
1518 | struct dm_info info; |
1519 | const struct dm_info *dinfo; | |
1520 | const char *name; | |
1521 | const char *uuid; | |
1522 | ||
b4f1578f AK |
1523 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1524 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
3e8c6b73 AK |
1525 | stack; |
1526 | continue; | |
1527 | } | |
1528 | ||
b4f1578f | 1529 | if (!(name = dm_tree_node_get_name(child))) { |
3e8c6b73 AK |
1530 | stack; |
1531 | continue; | |
1532 | } | |
1533 | ||
b4f1578f | 1534 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
3e8c6b73 AK |
1535 | stack; |
1536 | continue; | |
1537 | } | |
1538 | ||
1539 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1540 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
3e8c6b73 | 1541 | continue; |
3e8c6b73 AK |
1542 | |
1543 | /* Refresh open_count */ | |
2e5ff5d1 | 1544 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info, NULL, NULL, NULL) || |
f55021f4 | 1545 | !info.exists) |
3e8c6b73 AK |
1546 | continue; |
1547 | ||
4ce43894 ZK |
1548 | if (info.open_count) { |
1549 | /* Skip internal non-toplevel opened nodes */ | |
1550 | if (level) | |
1551 | continue; | |
1552 | ||
1553 | /* When retry is not allowed, error */ | |
1554 | if (!child->dtree->retry_remove) { | |
1555 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1556 | ":%" PRIu32 ")", name, info.major, info.minor); | |
1557 | r = 0; | |
1558 | continue; | |
1559 | } | |
1560 | ||
1561 | /* Check toplevel node for holders/mounted fs */ | |
1562 | if (!_check_device_not_in_use(name, &info)) { | |
1563 | stack; | |
1564 | r = 0; | |
1565 | continue; | |
1566 | } | |
1567 | /* Go on with retry */ | |
1568 | } | |
125712be | 1569 | |
f3ef15ef | 1570 | /* Also checking open_count in parent nodes of presuspend_node */ |
125712be | 1571 | if ((child->presuspend_node && |
f3ef15ef ZK |
1572 | !_node_has_closed_parents(child->presuspend_node, |
1573 | uuid_prefix, uuid_prefix_len))) { | |
18e0f934 AK |
1574 | /* Only report error from (likely non-internal) dependency at top level */ |
1575 | if (!level) { | |
1576 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1577 | ":%" PRIu32 ")", name, info.major, | |
1578 | info.minor); | |
1579 | r = 0; | |
1580 | } | |
f55021f4 AK |
1581 | continue; |
1582 | } | |
1583 | ||
76d1aec8 ZK |
1584 | /* Suspend child node first if requested */ |
1585 | if (child->presuspend_node && | |
1586 | !dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) | |
1587 | continue; | |
1588 | ||
f16aea9e | 1589 | if (!_deactivate_node(name, info.major, info.minor, |
787200ef | 1590 | &child->dtree->cookie, child->udev_flags, |
4ce43894 | 1591 | (level == 0) ? child->dtree->retry_remove : 0)) { |
3e8c6b73 AK |
1592 | log_error("Unable to deactivate %s (%" PRIu32 |
1593 | ":%" PRIu32 ")", name, info.major, | |
1594 | info.minor); | |
b7eb2ad0 | 1595 | r = 0; |
3e8c6b73 | 1596 | continue; |
f4249251 AK |
1597 | } else if (info.suspended) |
1598 | dec_suspended(); | |
3e8c6b73 | 1599 | |
18e0f934 AK |
1600 | if (dm_tree_node_num_children(child, 0)) { |
1601 | if (!_dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len, level + 1)) | |
b7eb2ad0 | 1602 | return_0; |
18e0f934 | 1603 | } |
3e8c6b73 AK |
1604 | } |
1605 | ||
b7eb2ad0 | 1606 | return r; |
3e8c6b73 | 1607 | } |
db208f51 | 1608 | |
18e0f934 AK |
1609 | int dm_tree_deactivate_children(struct dm_tree_node *dnode, |
1610 | const char *uuid_prefix, | |
1611 | size_t uuid_prefix_len) | |
1612 | { | |
1613 | return _dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len, 0); | |
1614 | } | |
1615 | ||
b4f1578f | 1616 | int dm_tree_suspend_children(struct dm_tree_node *dnode, |
08e64ce5 ZK |
1617 | const char *uuid_prefix, |
1618 | size_t uuid_prefix_len) | |
db208f51 | 1619 | { |
68085c93 | 1620 | int r = 1; |
db208f51 | 1621 | void *handle = NULL; |
b4f1578f | 1622 | struct dm_tree_node *child = dnode; |
db208f51 AK |
1623 | struct dm_info info, newinfo; |
1624 | const struct dm_info *dinfo; | |
1625 | const char *name; | |
1626 | const char *uuid; | |
1627 | ||
690a5da2 | 1628 | /* Suspend nodes at this level of the tree */ |
b4f1578f AK |
1629 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1630 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
db208f51 AK |
1631 | stack; |
1632 | continue; | |
1633 | } | |
1634 | ||
b4f1578f | 1635 | if (!(name = dm_tree_node_get_name(child))) { |
db208f51 AK |
1636 | stack; |
1637 | continue; | |
1638 | } | |
1639 | ||
b4f1578f | 1640 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
db208f51 AK |
1641 | stack; |
1642 | continue; | |
1643 | } | |
1644 | ||
1645 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1646 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
db208f51 AK |
1647 | continue; |
1648 | ||
690a5da2 AK |
1649 | /* Ensure immediate parents are already suspended */ |
1650 | if (!_children_suspended(child, 1, uuid_prefix, uuid_prefix_len)) | |
1651 | continue; | |
1652 | ||
2e5ff5d1 | 1653 | if (!_info_by_dev(dinfo->major, dinfo->minor, 0, &info, NULL, NULL, NULL) || |
b700541f | 1654 | !info.exists || info.suspended) |
db208f51 AK |
1655 | continue; |
1656 | ||
c55b1410 | 1657 | if (!_suspend_node(name, info.major, info.minor, |
b9ffd32c AK |
1658 | child->dtree->skip_lockfs, |
1659 | child->dtree->no_flush, &newinfo)) { | |
db208f51 AK |
1660 | log_error("Unable to suspend %s (%" PRIu32 |
1661 | ":%" PRIu32 ")", name, info.major, | |
1662 | info.minor); | |
68085c93 | 1663 | r = 0; |
db208f51 AK |
1664 | continue; |
1665 | } | |
1666 | ||
1667 | /* Update cached info */ | |
1668 | child->info = newinfo; | |
690a5da2 AK |
1669 | } |
1670 | ||
1671 | /* Then suspend any child nodes */ | |
1672 | handle = NULL; | |
1673 | ||
b4f1578f AK |
1674 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1675 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
690a5da2 AK |
1676 | stack; |
1677 | continue; | |
1678 | } | |
1679 | ||
1680 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 | 1681 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 | 1682 | continue; |
db208f51 | 1683 | |
b4f1578f | 1684 | if (dm_tree_node_num_children(child, 0)) |
68085c93 MS |
1685 | if (!dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) |
1686 | return_0; | |
db208f51 AK |
1687 | } |
1688 | ||
68085c93 | 1689 | return r; |
db208f51 AK |
1690 | } |
1691 | ||
b4f1578f | 1692 | int dm_tree_activate_children(struct dm_tree_node *dnode, |
db208f51 AK |
1693 | const char *uuid_prefix, |
1694 | size_t uuid_prefix_len) | |
1695 | { | |
2ca6b865 | 1696 | int r = 1; |
db208f51 | 1697 | void *handle = NULL; |
b4f1578f | 1698 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
1699 | struct dm_info newinfo; |
1700 | const char *name; | |
db208f51 | 1701 | const char *uuid; |
56c28292 | 1702 | int priority; |
db208f51 | 1703 | |
165e4a11 | 1704 | /* Activate children first */ |
b4f1578f AK |
1705 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1706 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
165e4a11 AK |
1707 | stack; |
1708 | continue; | |
db208f51 AK |
1709 | } |
1710 | ||
908db078 AK |
1711 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1712 | continue; | |
db208f51 | 1713 | |
b4f1578f | 1714 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
1715 | if (!dm_tree_activate_children(child, uuid_prefix, uuid_prefix_len)) |
1716 | return_0; | |
56c28292 | 1717 | } |
165e4a11 | 1718 | |
56c28292 | 1719 | handle = NULL; |
165e4a11 | 1720 | |
aa6f4e51 | 1721 | for (priority = 0; priority < 3; priority++) { |
56c28292 | 1722 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
a5a31ce9 ZK |
1723 | if (priority != child->activation_priority) |
1724 | continue; | |
1725 | ||
56c28292 AK |
1726 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
1727 | stack; | |
1728 | continue; | |
165e4a11 | 1729 | } |
165e4a11 | 1730 | |
56c28292 AK |
1731 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1732 | continue; | |
165e4a11 | 1733 | |
56c28292 AK |
1734 | if (!(name = dm_tree_node_get_name(child))) { |
1735 | stack; | |
1736 | continue; | |
1737 | } | |
1738 | ||
1739 | /* Rename? */ | |
1740 | if (child->props.new_name) { | |
bd90c6b2 | 1741 | if (!_rename_node(name, child->props.new_name, child->info.major, |
f16aea9e PR |
1742 | child->info.minor, &child->dtree->cookie, |
1743 | child->udev_flags)) { | |
56c28292 AK |
1744 | log_error("Failed to rename %s (%" PRIu32 |
1745 | ":%" PRIu32 ") to %s", name, child->info.major, | |
1746 | child->info.minor, child->props.new_name); | |
1747 | return 0; | |
1748 | } | |
1749 | child->name = child->props.new_name; | |
1750 | child->props.new_name = NULL; | |
1751 | } | |
1752 | ||
1753 | if (!child->info.inactive_table && !child->info.suspended) | |
1754 | continue; | |
1755 | ||
bafa2f39 | 1756 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 1757 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 | 1758 | &newinfo, &child->dtree->cookie, child->udev_flags, child->info.suspended)) { |
56c28292 | 1759 | log_error("Unable to resume %s (%" PRIu32 |
bafa2f39 | 1760 | ":%" PRIu32 ")", child->name, child->info.major, |
56c28292 | 1761 | child->info.minor); |
2ca6b865 | 1762 | r = 0; |
56c28292 AK |
1763 | continue; |
1764 | } | |
1765 | ||
1766 | /* Update cached info */ | |
1767 | child->info = newinfo; | |
1768 | } | |
db208f51 AK |
1769 | } |
1770 | ||
165e4a11 AK |
1771 | handle = NULL; |
1772 | ||
2ca6b865 | 1773 | return r; |
165e4a11 AK |
1774 | } |
1775 | ||
b4f1578f | 1776 | static int _create_node(struct dm_tree_node *dnode) |
165e4a11 AK |
1777 | { |
1778 | int r = 0; | |
1779 | struct dm_task *dmt; | |
1780 | ||
1781 | log_verbose("Creating %s", dnode->name); | |
1782 | ||
1783 | if (!(dmt = dm_task_create(DM_DEVICE_CREATE))) { | |
1784 | log_error("Create dm_task creation failed for %s", dnode->name); | |
1785 | return 0; | |
1786 | } | |
1787 | ||
1788 | if (!dm_task_set_name(dmt, dnode->name)) { | |
1789 | log_error("Failed to set device name for %s", dnode->name); | |
1790 | goto out; | |
1791 | } | |
1792 | ||
1793 | if (!dm_task_set_uuid(dmt, dnode->uuid)) { | |
1794 | log_error("Failed to set uuid for %s", dnode->name); | |
1795 | goto out; | |
1796 | } | |
1797 | ||
1798 | if (dnode->props.major && | |
1799 | (!dm_task_set_major(dmt, dnode->props.major) || | |
1800 | !dm_task_set_minor(dmt, dnode->props.minor))) { | |
1801 | log_error("Failed to set device number for %s creation.", dnode->name); | |
1802 | goto out; | |
1803 | } | |
1804 | ||
1805 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
1806 | log_error("Failed to set read only flag for %s", dnode->name); | |
1807 | goto out; | |
1808 | } | |
1809 | ||
1810 | if (!dm_task_no_open_count(dmt)) | |
1811 | log_error("Failed to disable open_count"); | |
1812 | ||
1813 | if ((r = dm_task_run(dmt))) | |
1814 | r = dm_task_get_info(dmt, &dnode->info); | |
1815 | ||
1816 | out: | |
1817 | dm_task_destroy(dmt); | |
1818 | ||
1819 | return r; | |
1820 | } | |
1821 | ||
1822 | ||
b4f1578f | 1823 | static int _build_dev_string(char *devbuf, size_t bufsize, struct dm_tree_node *node) |
165e4a11 AK |
1824 | { |
1825 | if (!dm_format_dev(devbuf, bufsize, node->info.major, node->info.minor)) { | |
40e5fd8b AK |
1826 | log_error("Failed to format %s device number for %s as dm " |
1827 | "target (%u,%u)", | |
1828 | node->name, node->uuid, node->info.major, node->info.minor); | |
1829 | return 0; | |
165e4a11 AK |
1830 | } |
1831 | ||
1832 | return 1; | |
1833 | } | |
1834 | ||
ffa9b6a5 ZK |
1835 | /* simplify string emiting code */ |
1836 | #define EMIT_PARAMS(p, str...)\ | |
7b6c011c AK |
1837 | do {\ |
1838 | int w;\ | |
1839 | if ((w = dm_snprintf(params + p, paramsize - (size_t) p, str)) < 0) {\ | |
1840 | stack; /* Out of space */\ | |
1841 | return -1;\ | |
1842 | }\ | |
1843 | p += w;\ | |
1844 | } while (0) | |
ffa9b6a5 | 1845 | |
3c74075f JEB |
1846 | /* |
1847 | * _emit_areas_line | |
1848 | * | |
1849 | * Returns: 1 on success, 0 on failure | |
1850 | */ | |
08f1ddea | 1851 | static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)), |
4dcaa230 AK |
1852 | struct load_segment *seg, char *params, |
1853 | size_t paramsize, int *pos) | |
165e4a11 AK |
1854 | { |
1855 | struct seg_area *area; | |
7d7d93ac | 1856 | char devbuf[DM_FORMAT_DEV_BUFSIZE]; |
609faae9 | 1857 | unsigned first_time = 1; |
db3c1ac1 | 1858 | const char *logtype, *synctype; |
b262f3e1 | 1859 | unsigned log_parm_count; |
165e4a11 | 1860 | |
2c44337b | 1861 | dm_list_iterate_items(area, &seg->areas) { |
b262f3e1 ZK |
1862 | switch (seg->type) { |
1863 | case SEG_REPLICATOR_DEV: | |
6d04311e JEB |
1864 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1865 | return_0; | |
1866 | ||
b262f3e1 ZK |
1867 | EMIT_PARAMS(*pos, " %d 1 %s", area->rsite_index, devbuf); |
1868 | if (first_time) | |
1869 | EMIT_PARAMS(*pos, " nolog 0"); | |
1870 | else { | |
1871 | /* Remote devices */ | |
1872 | log_parm_count = (area->flags & | |
1873 | (DM_NOSYNC | DM_FORCESYNC)) ? 2 : 1; | |
1874 | ||
1875 | if (!area->slog) { | |
1876 | devbuf[0] = 0; /* Only core log parameters */ | |
1877 | logtype = "core"; | |
1878 | } else { | |
1879 | devbuf[0] = ' '; /* Extra space before device name */ | |
1880 | if (!_build_dev_string(devbuf + 1, | |
1881 | sizeof(devbuf) - 1, | |
1882 | area->slog)) | |
1883 | return_0; | |
1884 | logtype = "disk"; | |
1885 | log_parm_count++; /* Extra sync log device name parameter */ | |
1886 | } | |
1887 | ||
1888 | EMIT_PARAMS(*pos, " %s %u%s %" PRIu64, logtype, | |
1889 | log_parm_count, devbuf, area->region_size); | |
1890 | ||
db3c1ac1 AK |
1891 | synctype = (area->flags & DM_NOSYNC) ? |
1892 | " nosync" : (area->flags & DM_FORCESYNC) ? | |
1893 | " sync" : NULL; | |
b262f3e1 | 1894 | |
db3c1ac1 AK |
1895 | if (synctype) |
1896 | EMIT_PARAMS(*pos, "%s", synctype); | |
b262f3e1 ZK |
1897 | } |
1898 | break; | |
cac52ca4 JEB |
1899 | case SEG_RAID1: |
1900 | case SEG_RAID4: | |
1901 | case SEG_RAID5_LA: | |
1902 | case SEG_RAID5_RA: | |
1903 | case SEG_RAID5_LS: | |
1904 | case SEG_RAID5_RS: | |
1905 | case SEG_RAID6_ZR: | |
1906 | case SEG_RAID6_NR: | |
1907 | case SEG_RAID6_NC: | |
6d04311e JEB |
1908 | if (!area->dev_node) { |
1909 | EMIT_PARAMS(*pos, " -"); | |
1910 | break; | |
1911 | } | |
1912 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) | |
1913 | return_0; | |
1914 | ||
cac52ca4 JEB |
1915 | EMIT_PARAMS(*pos, " %s", devbuf); |
1916 | break; | |
b262f3e1 | 1917 | default: |
6d04311e JEB |
1918 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1919 | return_0; | |
1920 | ||
b262f3e1 ZK |
1921 | EMIT_PARAMS(*pos, "%s%s %" PRIu64, first_time ? "" : " ", |
1922 | devbuf, area->offset); | |
1923 | } | |
609faae9 AK |
1924 | |
1925 | first_time = 0; | |
165e4a11 AK |
1926 | } |
1927 | ||
1928 | return 1; | |
1929 | } | |
1930 | ||
b262f3e1 ZK |
1931 | static int _replicator_emit_segment_line(const struct load_segment *seg, char *params, |
1932 | size_t paramsize, int *pos) | |
1933 | { | |
1934 | const struct load_segment *rlog_seg; | |
1935 | struct replicator_site *rsite; | |
1936 | char rlogbuf[DM_FORMAT_DEV_BUFSIZE]; | |
1937 | unsigned parm_count; | |
1938 | ||
1939 | if (!seg->log || !_build_dev_string(rlogbuf, sizeof(rlogbuf), seg->log)) | |
1940 | return_0; | |
1941 | ||
1942 | rlog_seg = dm_list_item(dm_list_last(&seg->log->props.segs), | |
1943 | struct load_segment); | |
1944 | ||
1945 | EMIT_PARAMS(*pos, "%s 4 %s 0 auto %" PRIu64, | |
1946 | seg->rlog_type, rlogbuf, rlog_seg->size); | |
1947 | ||
1948 | dm_list_iterate_items(rsite, &seg->rsites) { | |
1949 | parm_count = (rsite->fall_behind_data | |
1950 | || rsite->fall_behind_ios | |
1951 | || rsite->async_timeout) ? 4 : 2; | |
1952 | ||
1953 | EMIT_PARAMS(*pos, " blockdev %u %u %s", parm_count, rsite->rsite_index, | |
1954 | (rsite->mode == DM_REPLICATOR_SYNC) ? "synchronous" : "asynchronous"); | |
1955 | ||
1956 | if (rsite->fall_behind_data) | |
1957 | EMIT_PARAMS(*pos, " data %" PRIu64, rsite->fall_behind_data); | |
1958 | else if (rsite->fall_behind_ios) | |
1959 | EMIT_PARAMS(*pos, " ios %" PRIu32, rsite->fall_behind_ios); | |
1960 | else if (rsite->async_timeout) | |
1961 | EMIT_PARAMS(*pos, " timeout %" PRIu32, rsite->async_timeout); | |
1962 | } | |
1963 | ||
1964 | return 1; | |
1965 | } | |
1966 | ||
3c74075f | 1967 | /* |
3c74075f JEB |
1968 | * Returns: 1 on success, 0 on failure |
1969 | */ | |
beecb1e1 ZK |
1970 | static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *seg, |
1971 | char *params, size_t paramsize) | |
165e4a11 | 1972 | { |
8f26e18c JEB |
1973 | int block_on_error = 0; |
1974 | int handle_errors = 0; | |
1975 | int dm_log_userspace = 0; | |
1976 | struct utsname uts; | |
dbcb64b8 | 1977 | unsigned log_parm_count; |
b39fdcf4 | 1978 | int pos = 0, parts; |
7d7d93ac | 1979 | char logbuf[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 1980 | const char *logtype; |
b39fdcf4 | 1981 | unsigned kmaj = 0, kmin = 0, krel = 0; |
165e4a11 | 1982 | |
b39fdcf4 MB |
1983 | if (uname(&uts) == -1) { |
1984 | log_error("Cannot read kernel release version."); | |
1985 | return 0; | |
1986 | } | |
1987 | ||
1988 | /* Kernels with a major number of 2 always had 3 parts. */ | |
1989 | parts = sscanf(uts.release, "%u.%u.%u", &kmaj, &kmin, &krel); | |
1990 | if (parts < 1 || (kmaj < 3 && parts < 3)) { | |
1991 | log_error("Wrong kernel release version %s.", uts.release); | |
30a65310 ZK |
1992 | return 0; |
1993 | } | |
67b25ed4 | 1994 | |
8f26e18c JEB |
1995 | if ((seg->flags & DM_BLOCK_ON_ERROR)) { |
1996 | /* | |
1997 | * Originally, block_on_error was an argument to the log | |
1998 | * portion of the mirror CTR table. It was renamed to | |
1999 | * "handle_errors" and now resides in the 'features' | |
2000 | * section of the mirror CTR table (i.e. at the end). | |
2001 | * | |
2002 | * We can identify whether to use "block_on_error" or | |
2003 | * "handle_errors" by the dm-mirror module's version | |
2004 | * number (>= 1.12) or by the kernel version (>= 2.6.22). | |
2005 | */ | |
ba61f848 | 2006 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 22)) |
8f26e18c JEB |
2007 | handle_errors = 1; |
2008 | else | |
2009 | block_on_error = 1; | |
2010 | } | |
2011 | ||
2012 | if (seg->clustered) { | |
2013 | /* Cluster mirrors require a UUID */ | |
2014 | if (!seg->uuid) | |
2015 | return_0; | |
2016 | ||
2017 | /* | |
2018 | * Cluster mirrors used to have their own log | |
2019 | * types. Now they are accessed through the | |
2020 | * userspace log type. | |
2021 | * | |
2022 | * The dm-log-userspace module was added to the | |
2023 | * 2.6.31 kernel. | |
2024 | */ | |
ba61f848 | 2025 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 31)) |
8f26e18c JEB |
2026 | dm_log_userspace = 1; |
2027 | } | |
2028 | ||
2029 | /* Region size */ | |
2030 | log_parm_count = 1; | |
2031 | ||
2032 | /* [no]sync, block_on_error etc. */ | |
2033 | log_parm_count += hweight32(seg->flags); | |
311d6d81 | 2034 | |
8f26e18c JEB |
2035 | /* "handle_errors" is a feature arg now */ |
2036 | if (handle_errors) | |
2037 | log_parm_count--; | |
2038 | ||
2039 | /* DM_CORELOG does not count in the param list */ | |
2040 | if (seg->flags & DM_CORELOG) | |
2041 | log_parm_count--; | |
2042 | ||
2043 | if (seg->clustered) { | |
2044 | log_parm_count++; /* For UUID */ | |
2045 | ||
2046 | if (!dm_log_userspace) | |
ffa9b6a5 | 2047 | EMIT_PARAMS(pos, "clustered-"); |
49b95a5e JEB |
2048 | else |
2049 | /* For clustered-* type field inserted later */ | |
2050 | log_parm_count++; | |
8f26e18c | 2051 | } |
dbcb64b8 | 2052 | |
8f26e18c JEB |
2053 | if (!seg->log) |
2054 | logtype = "core"; | |
2055 | else { | |
2056 | logtype = "disk"; | |
2057 | log_parm_count++; | |
2058 | if (!_build_dev_string(logbuf, sizeof(logbuf), seg->log)) | |
2059 | return_0; | |
2060 | } | |
dbcb64b8 | 2061 | |
8f26e18c JEB |
2062 | if (dm_log_userspace) |
2063 | EMIT_PARAMS(pos, "userspace %u %s clustered-%s", | |
2064 | log_parm_count, seg->uuid, logtype); | |
2065 | else | |
ffa9b6a5 | 2066 | EMIT_PARAMS(pos, "%s %u", logtype, log_parm_count); |
dbcb64b8 | 2067 | |
8f26e18c JEB |
2068 | if (seg->log) |
2069 | EMIT_PARAMS(pos, " %s", logbuf); | |
2070 | ||
2071 | EMIT_PARAMS(pos, " %u", seg->region_size); | |
dbcb64b8 | 2072 | |
8f26e18c JEB |
2073 | if (seg->clustered && !dm_log_userspace) |
2074 | EMIT_PARAMS(pos, " %s", seg->uuid); | |
67b25ed4 | 2075 | |
8f26e18c JEB |
2076 | if ((seg->flags & DM_NOSYNC)) |
2077 | EMIT_PARAMS(pos, " nosync"); | |
2078 | else if ((seg->flags & DM_FORCESYNC)) | |
2079 | EMIT_PARAMS(pos, " sync"); | |
dbcb64b8 | 2080 | |
8f26e18c JEB |
2081 | if (block_on_error) |
2082 | EMIT_PARAMS(pos, " block_on_error"); | |
2083 | ||
2084 | EMIT_PARAMS(pos, " %u ", seg->mirror_area_count); | |
2085 | ||
5f3325fc | 2086 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) |
3c74075f | 2087 | return_0; |
dbcb64b8 | 2088 | |
8f26e18c JEB |
2089 | if (handle_errors) |
2090 | EMIT_PARAMS(pos, " 1 handle_errors"); | |
ffa9b6a5 | 2091 | |
3c74075f | 2092 | return 1; |
8f26e18c JEB |
2093 | } |
2094 | ||
cac52ca4 JEB |
2095 | static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, |
2096 | uint32_t minor, struct load_segment *seg, | |
2097 | uint64_t *seg_start, char *params, | |
2098 | size_t paramsize) | |
2099 | { | |
ad2432dc | 2100 | uint32_t i; |
cac52ca4 JEB |
2101 | int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */ |
2102 | int pos = 0; | |
2103 | ||
2104 | if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC)) | |
2105 | param_count++; | |
2106 | ||
2107 | if (seg->region_size) | |
2108 | param_count += 2; | |
2109 | ||
ad2432dc MB |
2110 | /* rebuilds is 64-bit */ |
2111 | param_count += 2 * hweight32(seg->rebuilds & 0xFFFFFFFF); | |
2112 | param_count += 2 * hweight32(seg->rebuilds >> 32); | |
f439e65b | 2113 | |
cac52ca4 JEB |
2114 | if ((seg->type == SEG_RAID1) && seg->stripe_size) |
2115 | log_error("WARNING: Ignoring RAID1 stripe size"); | |
2116 | ||
2117 | EMIT_PARAMS(pos, "%s %d %u", dm_segtypes[seg->type].target, | |
2118 | param_count, seg->stripe_size); | |
2119 | ||
2120 | if (seg->flags & DM_NOSYNC) | |
2121 | EMIT_PARAMS(pos, " nosync"); | |
2122 | else if (seg->flags & DM_FORCESYNC) | |
2123 | EMIT_PARAMS(pos, " sync"); | |
2124 | ||
2125 | if (seg->region_size) | |
2126 | EMIT_PARAMS(pos, " region_size %u", seg->region_size); | |
2127 | ||
f439e65b JEB |
2128 | for (i = 0; i < (seg->area_count / 2); i++) |
2129 | if (seg->rebuilds & (1 << i)) | |
2130 | EMIT_PARAMS(pos, " rebuild %u", i); | |
2131 | ||
cac52ca4 JEB |
2132 | /* Print number of metadata/data device pairs */ |
2133 | EMIT_PARAMS(pos, " %u", seg->area_count/2); | |
2134 | ||
2135 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) | |
2136 | return_0; | |
2137 | ||
2138 | return 1; | |
2139 | } | |
2140 | ||
8f26e18c JEB |
2141 | static int _emit_segment_line(struct dm_task *dmt, uint32_t major, |
2142 | uint32_t minor, struct load_segment *seg, | |
2143 | uint64_t *seg_start, char *params, | |
2144 | size_t paramsize) | |
2145 | { | |
2146 | int pos = 0; | |
2147 | int r; | |
cac52ca4 | 2148 | int target_type_is_raid = 0; |
8f26e18c | 2149 | char originbuf[DM_FORMAT_DEV_BUFSIZE], cowbuf[DM_FORMAT_DEV_BUFSIZE]; |
4251236e | 2150 | char pool[DM_FORMAT_DEV_BUFSIZE], metadata[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 2151 | |
8f26e18c JEB |
2152 | switch(seg->type) { |
2153 | case SEG_ERROR: | |
2154 | case SEG_ZERO: | |
2155 | case SEG_LINEAR: | |
2156 | break; | |
2157 | case SEG_MIRRORED: | |
2158 | /* Mirrors are pretty complicated - now in separate function */ | |
beecb1e1 | 2159 | r = _mirror_emit_segment_line(dmt, seg, params, paramsize); |
3c74075f JEB |
2160 | if (!r) |
2161 | return_0; | |
165e4a11 | 2162 | break; |
b262f3e1 ZK |
2163 | case SEG_REPLICATOR: |
2164 | if ((r = _replicator_emit_segment_line(seg, params, paramsize, | |
2165 | &pos)) <= 0) { | |
2166 | stack; | |
2167 | return r; | |
2168 | } | |
2169 | break; | |
2170 | case SEG_REPLICATOR_DEV: | |
2171 | if (!seg->replicator || !_build_dev_string(originbuf, | |
2172 | sizeof(originbuf), | |
2173 | seg->replicator)) | |
2174 | return_0; | |
2175 | ||
2176 | EMIT_PARAMS(pos, "%s %" PRIu64, originbuf, seg->rdevice_index); | |
2177 | break; | |
165e4a11 | 2178 | case SEG_SNAPSHOT: |
aa6f4e51 | 2179 | case SEG_SNAPSHOT_MERGE: |
b4f1578f AK |
2180 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
2181 | return_0; | |
2182 | if (!_build_dev_string(cowbuf, sizeof(cowbuf), seg->cow)) | |
2183 | return_0; | |
ffa9b6a5 ZK |
2184 | EMIT_PARAMS(pos, "%s %s %c %d", originbuf, cowbuf, |
2185 | seg->persistent ? 'P' : 'N', seg->chunk_size); | |
165e4a11 AK |
2186 | break; |
2187 | case SEG_SNAPSHOT_ORIGIN: | |
b4f1578f AK |
2188 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
2189 | return_0; | |
ffa9b6a5 | 2190 | EMIT_PARAMS(pos, "%s", originbuf); |
165e4a11 AK |
2191 | break; |
2192 | case SEG_STRIPED: | |
609faae9 | 2193 | EMIT_PARAMS(pos, "%u %u ", seg->area_count, seg->stripe_size); |
165e4a11 | 2194 | break; |
12ca060e | 2195 | case SEG_CRYPT: |
609faae9 | 2196 | EMIT_PARAMS(pos, "%s%s%s%s%s %s %" PRIu64 " ", seg->cipher, |
12ca060e MB |
2197 | seg->chainmode ? "-" : "", seg->chainmode ?: "", |
2198 | seg->iv ? "-" : "", seg->iv ?: "", seg->key, | |
2199 | seg->iv_offset != DM_CRYPT_IV_DEFAULT ? | |
2200 | seg->iv_offset : *seg_start); | |
2201 | break; | |
cac52ca4 JEB |
2202 | case SEG_RAID1: |
2203 | case SEG_RAID4: | |
2204 | case SEG_RAID5_LA: | |
2205 | case SEG_RAID5_RA: | |
2206 | case SEG_RAID5_LS: | |
2207 | case SEG_RAID5_RS: | |
2208 | case SEG_RAID6_ZR: | |
2209 | case SEG_RAID6_NR: | |
2210 | case SEG_RAID6_NC: | |
2211 | target_type_is_raid = 1; | |
2212 | r = _raid_emit_segment_line(dmt, major, minor, seg, seg_start, | |
2213 | params, paramsize); | |
2214 | if (!r) | |
2215 | return_0; | |
2216 | ||
2217 | break; | |
4251236e ZK |
2218 | case SEG_THIN_POOL: |
2219 | if (!_build_dev_string(metadata, sizeof(metadata), seg->metadata)) | |
2220 | return_0; | |
2221 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
2222 | return_0; | |
2223 | EMIT_PARAMS(pos, "%s %s %d %" PRIu64 " %s", metadata, pool, | |
e9156c2b | 2224 | seg->data_block_size, seg->low_water_mark, |
ac08d9c0 | 2225 | seg->skip_block_zeroing ? "1 skip_block_zeroing" : "0"); |
4251236e ZK |
2226 | break; |
2227 | case SEG_THIN: | |
2228 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
2229 | return_0; | |
2230 | EMIT_PARAMS(pos, "%s %d", pool, seg->device_id); | |
2231 | break; | |
165e4a11 AK |
2232 | } |
2233 | ||
2234 | switch(seg->type) { | |
2235 | case SEG_ERROR: | |
b262f3e1 | 2236 | case SEG_REPLICATOR: |
165e4a11 AK |
2237 | case SEG_SNAPSHOT: |
2238 | case SEG_SNAPSHOT_ORIGIN: | |
aa6f4e51 | 2239 | case SEG_SNAPSHOT_MERGE: |
165e4a11 | 2240 | case SEG_ZERO: |
4251236e ZK |
2241 | case SEG_THIN_POOL: |
2242 | case SEG_THIN: | |
165e4a11 | 2243 | break; |
12ca060e | 2244 | case SEG_CRYPT: |
165e4a11 | 2245 | case SEG_LINEAR: |
b262f3e1 | 2246 | case SEG_REPLICATOR_DEV: |
165e4a11 AK |
2247 | case SEG_STRIPED: |
2248 | if ((r = _emit_areas_line(dmt, seg, params, paramsize, &pos)) <= 0) { | |
2249 | stack; | |
2250 | return r; | |
2251 | } | |
b6793963 AK |
2252 | if (!params[0]) { |
2253 | log_error("No parameters supplied for %s target " | |
2254 | "%u:%u.", dm_segtypes[seg->type].target, | |
812e10ac | 2255 | major, minor); |
b6793963 AK |
2256 | return 0; |
2257 | } | |
165e4a11 AK |
2258 | break; |
2259 | } | |
2260 | ||
4b2cae46 AK |
2261 | log_debug("Adding target to (%" PRIu32 ":%" PRIu32 "): %" PRIu64 |
2262 | " %" PRIu64 " %s %s", major, minor, | |
f439e65b JEB |
2263 | *seg_start, seg->size, target_type_is_raid ? "raid" : |
2264 | dm_segtypes[seg->type].target, params); | |
165e4a11 | 2265 | |
cac52ca4 JEB |
2266 | if (!dm_task_add_target(dmt, *seg_start, seg->size, |
2267 | target_type_is_raid ? "raid" : | |
2268 | dm_segtypes[seg->type].target, params)) | |
b4f1578f | 2269 | return_0; |
165e4a11 AK |
2270 | |
2271 | *seg_start += seg->size; | |
2272 | ||
2273 | return 1; | |
2274 | } | |
2275 | ||
ffa9b6a5 ZK |
2276 | #undef EMIT_PARAMS |
2277 | ||
4b2cae46 AK |
2278 | static int _emit_segment(struct dm_task *dmt, uint32_t major, uint32_t minor, |
2279 | struct load_segment *seg, uint64_t *seg_start) | |
165e4a11 AK |
2280 | { |
2281 | char *params; | |
2282 | size_t paramsize = 4096; | |
2283 | int ret; | |
2284 | ||
2285 | do { | |
2286 | if (!(params = dm_malloc(paramsize))) { | |
2287 | log_error("Insufficient space for target parameters."); | |
2288 | return 0; | |
2289 | } | |
2290 | ||
12ea7cb1 | 2291 | params[0] = '\0'; |
4b2cae46 AK |
2292 | ret = _emit_segment_line(dmt, major, minor, seg, seg_start, |
2293 | params, paramsize); | |
165e4a11 AK |
2294 | dm_free(params); |
2295 | ||
2296 | if (!ret) | |
2297 | stack; | |
2298 | ||
2299 | if (ret >= 0) | |
2300 | return ret; | |
2301 | ||
2302 | log_debug("Insufficient space in params[%" PRIsize_t | |
2303 | "] for target parameters.", paramsize); | |
2304 | ||
2305 | paramsize *= 2; | |
2306 | } while (paramsize < MAX_TARGET_PARAMSIZE); | |
2307 | ||
2308 | log_error("Target parameter size too big. Aborting."); | |
2309 | return 0; | |
2310 | } | |
2311 | ||
b4f1578f | 2312 | static int _load_node(struct dm_tree_node *dnode) |
165e4a11 AK |
2313 | { |
2314 | int r = 0; | |
2315 | struct dm_task *dmt; | |
2316 | struct load_segment *seg; | |
df390f17 | 2317 | uint64_t seg_start = 0, existing_table_size; |
165e4a11 | 2318 | |
4b2cae46 AK |
2319 | log_verbose("Loading %s table (%" PRIu32 ":%" PRIu32 ")", dnode->name, |
2320 | dnode->info.major, dnode->info.minor); | |
165e4a11 AK |
2321 | |
2322 | if (!(dmt = dm_task_create(DM_DEVICE_RELOAD))) { | |
2323 | log_error("Reload dm_task creation failed for %s", dnode->name); | |
2324 | return 0; | |
2325 | } | |
2326 | ||
2327 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
2328 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
2329 | log_error("Failed to set device number for %s reload.", dnode->name); | |
2330 | goto out; | |
2331 | } | |
2332 | ||
2333 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
2334 | log_error("Failed to set read only flag for %s", dnode->name); | |
2335 | goto out; | |
2336 | } | |
2337 | ||
2338 | if (!dm_task_no_open_count(dmt)) | |
2339 | log_error("Failed to disable open_count"); | |
2340 | ||
2c44337b | 2341 | dm_list_iterate_items(seg, &dnode->props.segs) |
4b2cae46 AK |
2342 | if (!_emit_segment(dmt, dnode->info.major, dnode->info.minor, |
2343 | seg, &seg_start)) | |
b4f1578f | 2344 | goto_out; |
165e4a11 | 2345 | |
ec289b64 AK |
2346 | if (!dm_task_suppress_identical_reload(dmt)) |
2347 | log_error("Failed to suppress reload of identical tables."); | |
2348 | ||
2349 | if ((r = dm_task_run(dmt))) { | |
165e4a11 | 2350 | r = dm_task_get_info(dmt, &dnode->info); |
ec289b64 AK |
2351 | if (r && !dnode->info.inactive_table) |
2352 | log_verbose("Suppressed %s identical table reload.", | |
2353 | dnode->name); | |
bb875bb9 | 2354 | |
df390f17 | 2355 | existing_table_size = dm_task_get_existing_table_size(dmt); |
bb875bb9 | 2356 | if ((dnode->props.size_changed = |
df390f17 | 2357 | (existing_table_size == seg_start) ? 0 : 1)) { |
bb875bb9 | 2358 | log_debug("Table size changed from %" PRIu64 " to %" |
df390f17 | 2359 | PRIu64 " for %s", existing_table_size, |
bb875bb9 | 2360 | seg_start, dnode->name); |
df390f17 AK |
2361 | /* |
2362 | * Kernel usually skips size validation on zero-length devices | |
2363 | * now so no need to preload them. | |
2364 | */ | |
2365 | /* FIXME In which kernel version did this begin? */ | |
2366 | if (!existing_table_size && dnode->props.delay_resume_if_new) | |
2367 | dnode->props.size_changed = 0; | |
2368 | } | |
ec289b64 | 2369 | } |
165e4a11 AK |
2370 | |
2371 | dnode->props.segment_count = 0; | |
2372 | ||
2373 | out: | |
2374 | dm_task_destroy(dmt); | |
2375 | ||
2376 | return r; | |
165e4a11 AK |
2377 | } |
2378 | ||
b4f1578f | 2379 | int dm_tree_preload_children(struct dm_tree_node *dnode, |
bb875bb9 AK |
2380 | const char *uuid_prefix, |
2381 | size_t uuid_prefix_len) | |
165e4a11 | 2382 | { |
2ca6b865 | 2383 | int r = 1; |
165e4a11 | 2384 | void *handle = NULL; |
b4f1578f | 2385 | struct dm_tree_node *child; |
165e4a11 | 2386 | struct dm_info newinfo; |
566515c0 | 2387 | int update_devs_flag = 0; |
165e4a11 AK |
2388 | |
2389 | /* Preload children first */ | |
b4f1578f | 2390 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
165e4a11 AK |
2391 | /* Skip existing non-device-mapper devices */ |
2392 | if (!child->info.exists && child->info.major) | |
2393 | continue; | |
2394 | ||
2395 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 AK |
2396 | if (child->info.exists && |
2397 | !_uuid_prefix_matches(child->uuid, uuid_prefix, uuid_prefix_len)) | |
165e4a11 AK |
2398 | continue; |
2399 | ||
b4f1578f | 2400 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
2401 | if (!dm_tree_preload_children(child, uuid_prefix, uuid_prefix_len)) |
2402 | return_0; | |
165e4a11 | 2403 | |
165e4a11 | 2404 | /* FIXME Cope if name exists with no uuid? */ |
3d6782b3 ZK |
2405 | if (!child->info.exists && !_create_node(child)) |
2406 | return_0; | |
165e4a11 | 2407 | |
3d6782b3 ZK |
2408 | if (!child->info.inactive_table && |
2409 | child->props.segment_count && | |
2410 | !_load_node(child)) | |
2411 | return_0; | |
165e4a11 | 2412 | |
eb91c4ee MB |
2413 | /* Propagate device size change change */ |
2414 | if (child->props.size_changed) | |
2415 | dnode->props.size_changed = 1; | |
2416 | ||
bb875bb9 | 2417 | /* Resume device immediately if it has parents and its size changed */ |
3776c494 | 2418 | if (!dm_tree_node_num_children(child, 1) || !child->props.size_changed) |
165e4a11 AK |
2419 | continue; |
2420 | ||
7707ea90 AK |
2421 | if (!child->info.inactive_table && !child->info.suspended) |
2422 | continue; | |
2423 | ||
fc795d87 | 2424 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 2425 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 AK |
2426 | &newinfo, &child->dtree->cookie, child->udev_flags, |
2427 | child->info.suspended)) { | |
165e4a11 | 2428 | log_error("Unable to resume %s (%" PRIu32 |
fc795d87 | 2429 | ":%" PRIu32 ")", child->name, child->info.major, |
165e4a11 | 2430 | child->info.minor); |
2ca6b865 | 2431 | r = 0; |
165e4a11 AK |
2432 | continue; |
2433 | } | |
2434 | ||
2435 | /* Update cached info */ | |
2436 | child->info = newinfo; | |
bbcd37e4 ZK |
2437 | if (child->props.send_messages && |
2438 | !(r = _node_send_messages(child, uuid_prefix, uuid_prefix_len))) { | |
2439 | stack; | |
2440 | continue; | |
2441 | } | |
566515c0 PR |
2442 | /* |
2443 | * Prepare for immediate synchronization with udev and flush all stacked | |
2444 | * dev node operations if requested by immediate_dev_node property. But | |
2445 | * finish processing current level in the tree first. | |
2446 | */ | |
2447 | if (child->props.immediate_dev_node) | |
2448 | update_devs_flag = 1; | |
165e4a11 AK |
2449 | } |
2450 | ||
bbcd37e4 ZK |
2451 | if (r && dnode->props.send_messages && |
2452 | !(r = _node_send_messages(dnode, uuid_prefix, uuid_prefix_len))) | |
2453 | stack; | |
165e4a11 | 2454 | |
566515c0 PR |
2455 | if (update_devs_flag) { |
2456 | if (!dm_udev_wait(dm_tree_get_cookie(dnode))) | |
2457 | stack; | |
2458 | dm_tree_set_cookie(dnode, 0); | |
566515c0 PR |
2459 | } |
2460 | ||
11f64f0a | 2461 | if (r && !_node_send_messages(dnode, uuid_prefix, uuid_prefix_len)) { |
25e6ab87 ZK |
2462 | stack; |
2463 | if (!(dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len))) | |
2464 | log_error("Failed to deactivate %s", dnode->name); | |
2465 | r = 0; | |
2466 | } | |
2467 | ||
2ca6b865 | 2468 | return r; |
165e4a11 AK |
2469 | } |
2470 | ||
165e4a11 AK |
2471 | /* |
2472 | * Returns 1 if unsure. | |
2473 | */ | |
b4f1578f | 2474 | int dm_tree_children_use_uuid(struct dm_tree_node *dnode, |
165e4a11 AK |
2475 | const char *uuid_prefix, |
2476 | size_t uuid_prefix_len) | |
2477 | { | |
2478 | void *handle = NULL; | |
b4f1578f | 2479 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
2480 | const char *uuid; |
2481 | ||
b4f1578f AK |
2482 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
2483 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
2484 | log_error("Failed to get uuid for dtree node."); | |
165e4a11 AK |
2485 | return 1; |
2486 | } | |
2487 | ||
87f98002 | 2488 | if (_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
165e4a11 AK |
2489 | return 1; |
2490 | ||
b4f1578f AK |
2491 | if (dm_tree_node_num_children(child, 0)) |
2492 | dm_tree_children_use_uuid(child, uuid_prefix, uuid_prefix_len); | |
165e4a11 AK |
2493 | } |
2494 | ||
2495 | return 0; | |
2496 | } | |
2497 | ||
2498 | /* | |
2499 | * Target functions | |
2500 | */ | |
b4f1578f | 2501 | static struct load_segment *_add_segment(struct dm_tree_node *dnode, unsigned type, uint64_t size) |
165e4a11 AK |
2502 | { |
2503 | struct load_segment *seg; | |
2504 | ||
b4f1578f AK |
2505 | if (!(seg = dm_pool_zalloc(dnode->dtree->mem, sizeof(*seg)))) { |
2506 | log_error("dtree node segment allocation failed"); | |
165e4a11 AK |
2507 | return NULL; |
2508 | } | |
2509 | ||
2510 | seg->type = type; | |
2511 | seg->size = size; | |
2512 | seg->area_count = 0; | |
2c44337b | 2513 | dm_list_init(&seg->areas); |
165e4a11 AK |
2514 | seg->stripe_size = 0; |
2515 | seg->persistent = 0; | |
2516 | seg->chunk_size = 0; | |
2517 | seg->cow = NULL; | |
2518 | seg->origin = NULL; | |
aa6f4e51 | 2519 | seg->merge = NULL; |
165e4a11 | 2520 | |
2c44337b | 2521 | dm_list_add(&dnode->props.segs, &seg->list); |
165e4a11 AK |
2522 | dnode->props.segment_count++; |
2523 | ||
2524 | return seg; | |
2525 | } | |
2526 | ||
b4f1578f | 2527 | int dm_tree_node_add_snapshot_origin_target(struct dm_tree_node *dnode, |
40e5fd8b AK |
2528 | uint64_t size, |
2529 | const char *origin_uuid) | |
165e4a11 AK |
2530 | { |
2531 | struct load_segment *seg; | |
b4f1578f | 2532 | struct dm_tree_node *origin_node; |
165e4a11 | 2533 | |
b4f1578f AK |
2534 | if (!(seg = _add_segment(dnode, SEG_SNAPSHOT_ORIGIN, size))) |
2535 | return_0; | |
165e4a11 | 2536 | |
b4f1578f | 2537 | if (!(origin_node = dm_tree_find_node_by_uuid(dnode->dtree, origin_uuid))) { |
165e4a11 AK |
2538 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2539 | return 0; | |
2540 | } | |
2541 | ||
2542 | seg->origin = origin_node; | |
b4f1578f AK |
2543 | if (!_link_tree_nodes(dnode, origin_node)) |
2544 | return_0; | |
165e4a11 | 2545 | |
56c28292 AK |
2546 | /* Resume snapshot origins after new snapshots */ |
2547 | dnode->activation_priority = 1; | |
2548 | ||
165e4a11 AK |
2549 | return 1; |
2550 | } | |
2551 | ||
aa6f4e51 MS |
2552 | static int _add_snapshot_target(struct dm_tree_node *node, |
2553 | uint64_t size, | |
2554 | const char *origin_uuid, | |
2555 | const char *cow_uuid, | |
2556 | const char *merge_uuid, | |
2557 | int persistent, | |
2558 | uint32_t chunk_size) | |
165e4a11 AK |
2559 | { |
2560 | struct load_segment *seg; | |
aa6f4e51 MS |
2561 | struct dm_tree_node *origin_node, *cow_node, *merge_node; |
2562 | unsigned seg_type; | |
2563 | ||
2564 | seg_type = !merge_uuid ? SEG_SNAPSHOT : SEG_SNAPSHOT_MERGE; | |
165e4a11 | 2565 | |
aa6f4e51 | 2566 | if (!(seg = _add_segment(node, seg_type, size))) |
b4f1578f | 2567 | return_0; |
165e4a11 | 2568 | |
b4f1578f | 2569 | if (!(origin_node = dm_tree_find_node_by_uuid(node->dtree, origin_uuid))) { |
165e4a11 AK |
2570 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2571 | return 0; | |
2572 | } | |
2573 | ||
2574 | seg->origin = origin_node; | |
b4f1578f AK |
2575 | if (!_link_tree_nodes(node, origin_node)) |
2576 | return_0; | |
165e4a11 | 2577 | |
b4f1578f | 2578 | if (!(cow_node = dm_tree_find_node_by_uuid(node->dtree, cow_uuid))) { |
aa6f4e51 | 2579 | log_error("Couldn't find snapshot COW device uuid %s.", cow_uuid); |
165e4a11 AK |
2580 | return 0; |
2581 | } | |
2582 | ||
2583 | seg->cow = cow_node; | |
b4f1578f AK |
2584 | if (!_link_tree_nodes(node, cow_node)) |
2585 | return_0; | |
165e4a11 AK |
2586 | |
2587 | seg->persistent = persistent ? 1 : 0; | |
2588 | seg->chunk_size = chunk_size; | |
2589 | ||
aa6f4e51 MS |
2590 | if (merge_uuid) { |
2591 | if (!(merge_node = dm_tree_find_node_by_uuid(node->dtree, merge_uuid))) { | |
2592 | /* not a pure error, merging snapshot may have been deactivated */ | |
2593 | log_verbose("Couldn't find merging snapshot uuid %s.", merge_uuid); | |
2594 | } else { | |
2595 | seg->merge = merge_node; | |
2596 | /* must not link merging snapshot, would undermine activation_priority below */ | |
2597 | } | |
2598 | ||
2599 | /* Resume snapshot-merge (acting origin) after other snapshots */ | |
2600 | node->activation_priority = 1; | |
2601 | if (seg->merge) { | |
2602 | /* Resume merging snapshot after snapshot-merge */ | |
2603 | seg->merge->activation_priority = 2; | |
2604 | } | |
2605 | } | |
2606 | ||
165e4a11 AK |
2607 | return 1; |
2608 | } | |
2609 | ||
aa6f4e51 MS |
2610 | |
2611 | int dm_tree_node_add_snapshot_target(struct dm_tree_node *node, | |
2612 | uint64_t size, | |
2613 | const char *origin_uuid, | |
2614 | const char *cow_uuid, | |
2615 | int persistent, | |
2616 | uint32_t chunk_size) | |
2617 | { | |
2618 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2619 | NULL, persistent, chunk_size); | |
2620 | } | |
2621 | ||
2622 | int dm_tree_node_add_snapshot_merge_target(struct dm_tree_node *node, | |
2623 | uint64_t size, | |
2624 | const char *origin_uuid, | |
2625 | const char *cow_uuid, | |
2626 | const char *merge_uuid, | |
2627 | uint32_t chunk_size) | |
2628 | { | |
2629 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2630 | merge_uuid, 1, chunk_size); | |
2631 | } | |
2632 | ||
b4f1578f | 2633 | int dm_tree_node_add_error_target(struct dm_tree_node *node, |
40e5fd8b | 2634 | uint64_t size) |
165e4a11 | 2635 | { |
b4f1578f AK |
2636 | if (!_add_segment(node, SEG_ERROR, size)) |
2637 | return_0; | |
165e4a11 AK |
2638 | |
2639 | return 1; | |
2640 | } | |
2641 | ||
b4f1578f | 2642 | int dm_tree_node_add_zero_target(struct dm_tree_node *node, |
40e5fd8b | 2643 | uint64_t size) |
165e4a11 | 2644 | { |
b4f1578f AK |
2645 | if (!_add_segment(node, SEG_ZERO, size)) |
2646 | return_0; | |
165e4a11 AK |
2647 | |
2648 | return 1; | |
2649 | } | |
2650 | ||
b4f1578f | 2651 | int dm_tree_node_add_linear_target(struct dm_tree_node *node, |
40e5fd8b | 2652 | uint64_t size) |
165e4a11 | 2653 | { |
b4f1578f AK |
2654 | if (!_add_segment(node, SEG_LINEAR, size)) |
2655 | return_0; | |
165e4a11 AK |
2656 | |
2657 | return 1; | |
2658 | } | |
2659 | ||
b4f1578f | 2660 | int dm_tree_node_add_striped_target(struct dm_tree_node *node, |
40e5fd8b AK |
2661 | uint64_t size, |
2662 | uint32_t stripe_size) | |
165e4a11 AK |
2663 | { |
2664 | struct load_segment *seg; | |
2665 | ||
b4f1578f AK |
2666 | if (!(seg = _add_segment(node, SEG_STRIPED, size))) |
2667 | return_0; | |
165e4a11 AK |
2668 | |
2669 | seg->stripe_size = stripe_size; | |
2670 | ||
2671 | return 1; | |
2672 | } | |
2673 | ||
12ca060e MB |
2674 | int dm_tree_node_add_crypt_target(struct dm_tree_node *node, |
2675 | uint64_t size, | |
2676 | const char *cipher, | |
2677 | const char *chainmode, | |
2678 | const char *iv, | |
2679 | uint64_t iv_offset, | |
2680 | const char *key) | |
2681 | { | |
2682 | struct load_segment *seg; | |
2683 | ||
2684 | if (!(seg = _add_segment(node, SEG_CRYPT, size))) | |
2685 | return_0; | |
2686 | ||
2687 | seg->cipher = cipher; | |
2688 | seg->chainmode = chainmode; | |
2689 | seg->iv = iv; | |
2690 | seg->iv_offset = iv_offset; | |
2691 | seg->key = key; | |
2692 | ||
2693 | return 1; | |
2694 | } | |
2695 | ||
b4f1578f | 2696 | int dm_tree_node_add_mirror_target_log(struct dm_tree_node *node, |
165e4a11 | 2697 | uint32_t region_size, |
08e64ce5 | 2698 | unsigned clustered, |
165e4a11 | 2699 | const char *log_uuid, |
ce7ed2c0 AK |
2700 | unsigned area_count, |
2701 | uint32_t flags) | |
165e4a11 | 2702 | { |
908db078 | 2703 | struct dm_tree_node *log_node = NULL; |
165e4a11 AK |
2704 | struct load_segment *seg; |
2705 | ||
2706 | if (!node->props.segment_count) { | |
b8175c33 | 2707 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
2708 | return 0; |
2709 | } | |
2710 | ||
2c44337b | 2711 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 2712 | |
24b026e3 | 2713 | if (log_uuid) { |
67b25ed4 AK |
2714 | if (!(seg->uuid = dm_pool_strdup(node->dtree->mem, log_uuid))) { |
2715 | log_error("log uuid pool_strdup failed"); | |
2716 | return 0; | |
2717 | } | |
df390f17 AK |
2718 | if ((flags & DM_CORELOG)) |
2719 | /* For pvmove: immediate resume (for size validation) isn't needed. */ | |
2720 | node->props.delay_resume_if_new = 1; | |
2721 | else { | |
9723090c AK |
2722 | if (!(log_node = dm_tree_find_node_by_uuid(node->dtree, log_uuid))) { |
2723 | log_error("Couldn't find mirror log uuid %s.", log_uuid); | |
2724 | return 0; | |
2725 | } | |
2726 | ||
566515c0 PR |
2727 | if (clustered) |
2728 | log_node->props.immediate_dev_node = 1; | |
2729 | ||
0a99713e AK |
2730 | /* The kernel validates the size of disk logs. */ |
2731 | /* FIXME Propagate to any devices below */ | |
2732 | log_node->props.delay_resume_if_new = 0; | |
2733 | ||
9723090c AK |
2734 | if (!_link_tree_nodes(node, log_node)) |
2735 | return_0; | |
2736 | } | |
165e4a11 AK |
2737 | } |
2738 | ||
2739 | seg->log = log_node; | |
165e4a11 AK |
2740 | seg->region_size = region_size; |
2741 | seg->clustered = clustered; | |
2742 | seg->mirror_area_count = area_count; | |
dbcb64b8 | 2743 | seg->flags = flags; |
165e4a11 AK |
2744 | |
2745 | return 1; | |
2746 | } | |
2747 | ||
b4f1578f | 2748 | int dm_tree_node_add_mirror_target(struct dm_tree_node *node, |
40e5fd8b | 2749 | uint64_t size) |
165e4a11 | 2750 | { |
cbecd3cd | 2751 | if (!_add_segment(node, SEG_MIRRORED, size)) |
b4f1578f | 2752 | return_0; |
165e4a11 AK |
2753 | |
2754 | return 1; | |
2755 | } | |
2756 | ||
cac52ca4 JEB |
2757 | int dm_tree_node_add_raid_target(struct dm_tree_node *node, |
2758 | uint64_t size, | |
2759 | const char *raid_type, | |
2760 | uint32_t region_size, | |
2761 | uint32_t stripe_size, | |
f439e65b | 2762 | uint64_t rebuilds, |
cac52ca4 JEB |
2763 | uint64_t reserved2) |
2764 | { | |
2765 | int i; | |
2766 | struct load_segment *seg = NULL; | |
2767 | ||
2768 | for (i = 0; dm_segtypes[i].target && !seg; i++) | |
2769 | if (!strcmp(raid_type, dm_segtypes[i].target)) | |
2770 | if (!(seg = _add_segment(node, | |
2771 | dm_segtypes[i].type, size))) | |
2772 | return_0; | |
2773 | ||
b2fa9b43 JEB |
2774 | if (!seg) |
2775 | return_0; | |
2776 | ||
cac52ca4 JEB |
2777 | seg->region_size = region_size; |
2778 | seg->stripe_size = stripe_size; | |
2779 | seg->area_count = 0; | |
f439e65b | 2780 | seg->rebuilds = rebuilds; |
cac52ca4 JEB |
2781 | |
2782 | return 1; | |
2783 | } | |
2784 | ||
b262f3e1 ZK |
2785 | int dm_tree_node_add_replicator_target(struct dm_tree_node *node, |
2786 | uint64_t size, | |
2787 | const char *rlog_uuid, | |
2788 | const char *rlog_type, | |
2789 | unsigned rsite_index, | |
2790 | dm_replicator_mode_t mode, | |
2791 | uint32_t async_timeout, | |
2792 | uint64_t fall_behind_data, | |
2793 | uint32_t fall_behind_ios) | |
2794 | { | |
2795 | struct load_segment *rseg; | |
2796 | struct replicator_site *rsite; | |
2797 | ||
2798 | /* Local site0 - adds replicator segment and links rlog device */ | |
2799 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2800 | if (node->props.segment_count) { | |
2801 | log_error(INTERNAL_ERROR "Attempt to add replicator segment to already used node."); | |
2802 | return 0; | |
2803 | } | |
2804 | ||
2805 | if (!(rseg = _add_segment(node, SEG_REPLICATOR, size))) | |
2806 | return_0; | |
2807 | ||
2808 | if (!(rseg->log = dm_tree_find_node_by_uuid(node->dtree, rlog_uuid))) { | |
2809 | log_error("Missing replicator log uuid %s.", rlog_uuid); | |
2810 | return 0; | |
2811 | } | |
2812 | ||
2813 | if (!_link_tree_nodes(node, rseg->log)) | |
2814 | return_0; | |
2815 | ||
2816 | if (strcmp(rlog_type, "ringbuffer") != 0) { | |
2817 | log_error("Unsupported replicator log type %s.", rlog_type); | |
2818 | return 0; | |
2819 | } | |
2820 | ||
2821 | if (!(rseg->rlog_type = dm_pool_strdup(node->dtree->mem, rlog_type))) | |
2822 | return_0; | |
2823 | ||
2824 | dm_list_init(&rseg->rsites); | |
2825 | rseg->rdevice_count = 0; | |
2826 | node->activation_priority = 1; | |
2827 | } | |
2828 | ||
2829 | /* Add site to segment */ | |
2830 | if (mode == DM_REPLICATOR_SYNC | |
2831 | && (async_timeout || fall_behind_ios || fall_behind_data)) { | |
2832 | log_error("Async parameters passed for synchronnous replicator."); | |
2833 | return 0; | |
2834 | } | |
2835 | ||
2836 | if (node->props.segment_count != 1) { | |
2837 | log_error(INTERNAL_ERROR "Attempt to add remote site area before setting replicator log."); | |
2838 | return 0; | |
2839 | } | |
2840 | ||
2841 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2842 | if (rseg->type != SEG_REPLICATOR) { | |
2843 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2844 | dm_segtypes[rseg->type].target); | |
2845 | return 0; | |
2846 | } | |
2847 | ||
2848 | if (!(rsite = dm_pool_zalloc(node->dtree->mem, sizeof(*rsite)))) { | |
2849 | log_error("Failed to allocate remote site segment."); | |
2850 | return 0; | |
2851 | } | |
2852 | ||
2853 | dm_list_add(&rseg->rsites, &rsite->list); | |
2854 | rseg->rsite_count++; | |
2855 | ||
2856 | rsite->mode = mode; | |
2857 | rsite->async_timeout = async_timeout; | |
2858 | rsite->fall_behind_data = fall_behind_data; | |
2859 | rsite->fall_behind_ios = fall_behind_ios; | |
2860 | rsite->rsite_index = rsite_index; | |
2861 | ||
2862 | return 1; | |
2863 | } | |
2864 | ||
2865 | /* Appends device node to Replicator */ | |
2866 | int dm_tree_node_add_replicator_dev_target(struct dm_tree_node *node, | |
2867 | uint64_t size, | |
2868 | const char *replicator_uuid, | |
2869 | uint64_t rdevice_index, | |
2870 | const char *rdev_uuid, | |
2871 | unsigned rsite_index, | |
2872 | const char *slog_uuid, | |
2873 | uint32_t slog_flags, | |
2874 | uint32_t slog_region_size) | |
2875 | { | |
2876 | struct seg_area *area; | |
2877 | struct load_segment *rseg; | |
2878 | struct load_segment *rep_seg; | |
2879 | ||
2880 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2881 | /* Site index for local target */ | |
2882 | if (!(rseg = _add_segment(node, SEG_REPLICATOR_DEV, size))) | |
2883 | return_0; | |
2884 | ||
2885 | if (!(rseg->replicator = dm_tree_find_node_by_uuid(node->dtree, replicator_uuid))) { | |
2886 | log_error("Missing replicator uuid %s.", replicator_uuid); | |
2887 | return 0; | |
2888 | } | |
2889 | ||
2890 | /* Local slink0 for replicator must be always initialized first */ | |
2891 | if (rseg->replicator->props.segment_count != 1) { | |
2892 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment."); | |
2893 | return 0; | |
2894 | } | |
2895 | ||
2896 | rep_seg = dm_list_item(dm_list_last(&rseg->replicator->props.segs), struct load_segment); | |
2897 | if (rep_seg->type != SEG_REPLICATOR) { | |
2898 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2899 | dm_segtypes[rep_seg->type].target); | |
2900 | return 0; | |
2901 | } | |
2902 | rep_seg->rdevice_count++; | |
2903 | ||
2904 | if (!_link_tree_nodes(node, rseg->replicator)) | |
2905 | return_0; | |
2906 | ||
2907 | rseg->rdevice_index = rdevice_index; | |
2908 | } else { | |
2909 | /* Local slink0 for replicator must be always initialized first */ | |
2910 | if (node->props.segment_count != 1) { | |
2911 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment."); | |
2912 | return 0; | |
2913 | } | |
2914 | ||
2915 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2916 | if (rseg->type != SEG_REPLICATOR_DEV) { | |
2917 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment %s.", | |
2918 | dm_segtypes[rseg->type].target); | |
2919 | return 0; | |
2920 | } | |
2921 | } | |
2922 | ||
2923 | if (!(slog_flags & DM_CORELOG) && !slog_uuid) { | |
2924 | log_error("Unspecified sync log uuid."); | |
2925 | return 0; | |
2926 | } | |
2927 | ||
2928 | if (!dm_tree_node_add_target_area(node, NULL, rdev_uuid, 0)) | |
2929 | return_0; | |
2930 | ||
2931 | area = dm_list_item(dm_list_last(&rseg->areas), struct seg_area); | |
2932 | ||
2933 | if (!(slog_flags & DM_CORELOG)) { | |
2934 | if (!(area->slog = dm_tree_find_node_by_uuid(node->dtree, slog_uuid))) { | |
2935 | log_error("Couldn't find sync log uuid %s.", slog_uuid); | |
2936 | return 0; | |
2937 | } | |
2938 | ||
2939 | if (!_link_tree_nodes(node, area->slog)) | |
2940 | return_0; | |
2941 | } | |
2942 | ||
2943 | area->flags = slog_flags; | |
2944 | area->region_size = slog_region_size; | |
2945 | area->rsite_index = rsite_index; | |
2946 | ||
2947 | return 1; | |
2948 | } | |
2949 | ||
5668fe04 ZK |
2950 | static int _thin_validate_device_id(uint32_t device_id) |
2951 | { | |
2952 | if (device_id > DM_THIN_MAX_DEVICE_ID) { | |
2953 | log_error("Device id %u is higher then %u.", | |
2954 | device_id, DM_THIN_MAX_DEVICE_ID); | |
2955 | return 0; | |
2956 | } | |
2957 | ||
2958 | return 1; | |
2959 | } | |
2960 | ||
4251236e ZK |
2961 | int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node, |
2962 | uint64_t size, | |
e0ea24be | 2963 | uint64_t transaction_id, |
4251236e | 2964 | const char *metadata_uuid, |
5668fd6a | 2965 | const char *pool_uuid, |
4251236e | 2966 | uint32_t data_block_size, |
e9156c2b | 2967 | uint64_t low_water_mark, |
460c5991 | 2968 | unsigned skip_block_zeroing) |
4251236e ZK |
2969 | { |
2970 | struct load_segment *seg; | |
2971 | ||
3f53c059 | 2972 | if (data_block_size < DM_THIN_MIN_DATA_BLOCK_SIZE) { |
565a4bfc | 2973 | log_error("Data block size %u is lower then %u sectors.", |
3f53c059 | 2974 | data_block_size, DM_THIN_MIN_DATA_BLOCK_SIZE); |
4251236e ZK |
2975 | return 0; |
2976 | } | |
2977 | ||
3f53c059 | 2978 | if (data_block_size > DM_THIN_MAX_DATA_BLOCK_SIZE) { |
565a4bfc | 2979 | log_error("Data block size %u is higher then %u sectors.", |
3f53c059 | 2980 | data_block_size, DM_THIN_MAX_DATA_BLOCK_SIZE); |
4251236e ZK |
2981 | return 0; |
2982 | } | |
2983 | ||
2984 | if (!(seg = _add_segment(node, SEG_THIN_POOL, size))) | |
2985 | return_0; | |
2986 | ||
2987 | if (!(seg->metadata = dm_tree_find_node_by_uuid(node->dtree, metadata_uuid))) { | |
2988 | log_error("Missing metadata uuid %s.", metadata_uuid); | |
2989 | return 0; | |
2990 | } | |
2991 | ||
2992 | if (!_link_tree_nodes(node, seg->metadata)) | |
2993 | return_0; | |
2994 | ||
2995 | if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) { | |
2996 | log_error("Missing pool uuid %s.", pool_uuid); | |
2997 | return 0; | |
2998 | } | |
2999 | ||
3000 | if (!_link_tree_nodes(node, seg->pool)) | |
3001 | return_0; | |
3002 | ||
bbcd37e4 ZK |
3003 | node->props.send_messages = 1; |
3004 | seg->transaction_id = transaction_id; | |
e9156c2b | 3005 | seg->low_water_mark = low_water_mark; |
e0ea24be | 3006 | seg->data_block_size = data_block_size; |
460c5991 | 3007 | seg->skip_block_zeroing = skip_block_zeroing; |
25e6ab87 ZK |
3008 | dm_list_init(&seg->thin_messages); |
3009 | ||
3010 | return 1; | |
3011 | } | |
3012 | ||
3013 | int dm_tree_node_add_thin_pool_message(struct dm_tree_node *node, | |
2e732e96 ZK |
3014 | dm_thin_message_t type, |
3015 | uint64_t id1, uint64_t id2) | |
25e6ab87 ZK |
3016 | { |
3017 | struct load_segment *seg; | |
3018 | struct thin_message *tm; | |
3019 | ||
3020 | if (node->props.segment_count != 1) { | |
759b9592 | 3021 | log_error("Thin pool node must have only one segment."); |
25e6ab87 ZK |
3022 | return 0; |
3023 | } | |
3024 | ||
3025 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
25e6ab87 | 3026 | if (seg->type != SEG_THIN_POOL) { |
759b9592 | 3027 | log_error("Thin pool node has segment type %s.", |
25e6ab87 ZK |
3028 | dm_segtypes[seg->type].target); |
3029 | return 0; | |
3030 | } | |
3031 | ||
3032 | if (!(tm = dm_pool_zalloc(node->dtree->mem, sizeof (*tm)))) { | |
3033 | log_error("Failed to allocate thin message."); | |
3034 | return 0; | |
3035 | } | |
3036 | ||
2e732e96 | 3037 | switch (type) { |
25e6ab87 | 3038 | case DM_THIN_MESSAGE_CREATE_SNAP: |
759b9592 | 3039 | /* If the thin origin is active, it must be suspend first! */ |
2e732e96 | 3040 | if (id1 == id2) { |
759b9592 | 3041 | log_error("Cannot use same device id for origin and its snapshot."); |
25e6ab87 ZK |
3042 | return 0; |
3043 | } | |
2e732e96 ZK |
3044 | if (!_thin_validate_device_id(id1) || |
3045 | !_thin_validate_device_id(id2)) | |
25e6ab87 | 3046 | return_0; |
2e732e96 ZK |
3047 | tm->message.u.m_create_snap.device_id = id1; |
3048 | tm->message.u.m_create_snap.origin_id = id2; | |
25e6ab87 ZK |
3049 | break; |
3050 | case DM_THIN_MESSAGE_CREATE_THIN: | |
2e732e96 | 3051 | if (!_thin_validate_device_id(id1)) |
25e6ab87 | 3052 | return_0; |
2e732e96 | 3053 | tm->message.u.m_create_thin.device_id = id1; |
660a42bc | 3054 | tm->expected_errno = EEXIST; |
25e6ab87 ZK |
3055 | break; |
3056 | case DM_THIN_MESSAGE_DELETE: | |
2e732e96 | 3057 | if (!_thin_validate_device_id(id1)) |
25e6ab87 | 3058 | return_0; |
2e732e96 | 3059 | tm->message.u.m_delete.device_id = id1; |
660a42bc | 3060 | tm->expected_errno = ENODATA; |
25e6ab87 ZK |
3061 | break; |
3062 | case DM_THIN_MESSAGE_TRIM: | |
2e732e96 | 3063 | if (!_thin_validate_device_id(id1)) |
25e6ab87 | 3064 | return_0; |
2e732e96 ZK |
3065 | tm->message.u.m_trim.device_id = id1; |
3066 | tm->message.u.m_trim.new_size = id2; | |
25e6ab87 ZK |
3067 | break; |
3068 | case DM_THIN_MESSAGE_SET_TRANSACTION_ID: | |
19e3f8c3 | 3069 | if ((id1 + 1) != id2) { |
2e732e96 ZK |
3070 | log_error("New transaction id must be sequential."); |
3071 | return 0; /* FIXME: Maybe too strict here? */ | |
3072 | } | |
19e3f8c3 | 3073 | if (id2 != seg->transaction_id) { |
2e732e96 | 3074 | log_error("Current transaction id is different from thin pool."); |
25e6ab87 ZK |
3075 | return 0; /* FIXME: Maybe too strict here? */ |
3076 | } | |
2e732e96 ZK |
3077 | tm->message.u.m_set_transaction_id.current_id = id1; |
3078 | tm->message.u.m_set_transaction_id.new_id = id2; | |
25e6ab87 ZK |
3079 | break; |
3080 | default: | |
2e732e96 | 3081 | log_error("Unsupported message type %d.", (int) type); |
25e6ab87 ZK |
3082 | return 0; |
3083 | } | |
3084 | ||
2e732e96 | 3085 | tm->message.type = type; |
25e6ab87 | 3086 | dm_list_add(&seg->thin_messages, &tm->list); |
4251236e ZK |
3087 | |
3088 | return 1; | |
3089 | } | |
3090 | ||
3091 | int dm_tree_node_add_thin_target(struct dm_tree_node *node, | |
3092 | uint64_t size, | |
4d25c81b | 3093 | const char *pool_uuid, |
4251236e ZK |
3094 | uint32_t device_id) |
3095 | { | |
4d25c81b | 3096 | struct dm_tree_node *pool; |
4251236e ZK |
3097 | struct load_segment *seg; |
3098 | ||
4d25c81b ZK |
3099 | if (!(pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) { |
3100 | log_error("Missing thin pool uuid %s.", pool_uuid); | |
4251236e ZK |
3101 | return 0; |
3102 | } | |
3103 | ||
4d25c81b | 3104 | if (!_link_tree_nodes(node, pool)) |
4251236e ZK |
3105 | return_0; |
3106 | ||
6744c143 ZK |
3107 | if (!_thin_validate_device_id(device_id)) |
3108 | return_0; | |
4d25c81b | 3109 | |
6744c143 ZK |
3110 | if (!(seg = _add_segment(node, SEG_THIN, size))) |
3111 | return_0; | |
4d25c81b | 3112 | |
6744c143 ZK |
3113 | seg->pool = pool; |
3114 | seg->device_id = device_id; | |
1419bf1c | 3115 | |
4251236e ZK |
3116 | return 1; |
3117 | } | |
3118 | ||
077c4d1a ZK |
3119 | |
3120 | int dm_get_status_thin_pool(struct dm_pool *mem, const char *params, | |
3121 | struct dm_status_thin_pool **status) | |
3122 | { | |
3123 | struct dm_status_thin_pool *s; | |
3124 | ||
3125 | if (!(s = dm_pool_zalloc(mem, sizeof(struct dm_status_thin_pool)))) { | |
3126 | log_error("Failed to allocate thin_pool status structure."); | |
3127 | return 0; | |
3128 | } | |
3129 | ||
5fd459f0 | 3130 | /* FIXME: add support for held metadata root */ |
077c4d1a ZK |
3131 | if (sscanf(params, "%" PRIu64 " %" PRIu64 "/%" PRIu64 " %" PRIu64 "/%" PRIu64, |
3132 | &s->transaction_id, | |
5fd459f0 ZK |
3133 | &s->used_metadata_blocks, |
3134 | &s->total_metadata_blocks, | |
077c4d1a ZK |
3135 | &s->used_data_blocks, |
3136 | &s->total_data_blocks) != 5) { | |
3137 | log_error("Failed to parse thin pool params: %s.", params); | |
3138 | return 0; | |
3139 | } | |
3140 | ||
3141 | *status = s; | |
3142 | ||
3143 | return 1; | |
3144 | } | |
3145 | ||
3146 | int dm_get_status_thin(struct dm_pool *mem, const char *params, | |
3147 | struct dm_status_thin **status) | |
3148 | { | |
3149 | struct dm_status_thin *s; | |
3150 | ||
3151 | if (!(s = dm_pool_zalloc(mem, sizeof(struct dm_status_thin)))) { | |
3152 | log_error("Failed to allocate thin status structure."); | |
3153 | return 0; | |
3154 | } | |
3155 | ||
9568f1b5 ZK |
3156 | if (strchr(params, '-')) { |
3157 | s->mapped_sectors = 0; | |
3158 | s->highest_mapped_sector = 0; | |
3159 | } else if (sscanf(params, "%" PRIu64 " %" PRIu64, | |
077c4d1a ZK |
3160 | &s->mapped_sectors, |
3161 | &s->highest_mapped_sector) != 2) { | |
3162 | log_error("Failed to parse thin params: %s.", params); | |
3163 | return 0; | |
3164 | } | |
3165 | ||
3166 | *status = s; | |
3167 | ||
3168 | return 1; | |
3169 | } | |
3170 | ||
b4f1578f | 3171 | static int _add_area(struct dm_tree_node *node, struct load_segment *seg, struct dm_tree_node *dev_node, uint64_t offset) |
165e4a11 AK |
3172 | { |
3173 | struct seg_area *area; | |
3174 | ||
b4f1578f | 3175 | if (!(area = dm_pool_zalloc(node->dtree->mem, sizeof (*area)))) { |
165e4a11 AK |
3176 | log_error("Failed to allocate target segment area."); |
3177 | return 0; | |
3178 | } | |
3179 | ||
3180 | area->dev_node = dev_node; | |
3181 | area->offset = offset; | |
3182 | ||
2c44337b | 3183 | dm_list_add(&seg->areas, &area->list); |
165e4a11 AK |
3184 | seg->area_count++; |
3185 | ||
3186 | return 1; | |
3187 | } | |
3188 | ||
b4f1578f | 3189 | int dm_tree_node_add_target_area(struct dm_tree_node *node, |
40e5fd8b AK |
3190 | const char *dev_name, |
3191 | const char *uuid, | |
3192 | uint64_t offset) | |
165e4a11 AK |
3193 | { |
3194 | struct load_segment *seg; | |
3195 | struct stat info; | |
b4f1578f | 3196 | struct dm_tree_node *dev_node; |
165e4a11 AK |
3197 | |
3198 | if ((!dev_name || !*dev_name) && (!uuid || !*uuid)) { | |
b4f1578f | 3199 | log_error("dm_tree_node_add_target_area called without device"); |
165e4a11 AK |
3200 | return 0; |
3201 | } | |
3202 | ||
3203 | if (uuid) { | |
b4f1578f | 3204 | if (!(dev_node = dm_tree_find_node_by_uuid(node->dtree, uuid))) { |
165e4a11 AK |
3205 | log_error("Couldn't find area uuid %s.", uuid); |
3206 | return 0; | |
3207 | } | |
b4f1578f AK |
3208 | if (!_link_tree_nodes(node, dev_node)) |
3209 | return_0; | |
165e4a11 | 3210 | } else { |
6d04311e | 3211 | if (stat(dev_name, &info) < 0) { |
165e4a11 AK |
3212 | log_error("Device %s not found.", dev_name); |
3213 | return 0; | |
3214 | } | |
3215 | ||
40e5fd8b | 3216 | if (!S_ISBLK(info.st_mode)) { |
165e4a11 AK |
3217 | log_error("Device %s is not a block device.", dev_name); |
3218 | return 0; | |
3219 | } | |
3220 | ||
3221 | /* FIXME Check correct macro use */ | |
cda69e17 PR |
3222 | if (!(dev_node = _add_dev(node->dtree, node, MAJOR(info.st_rdev), |
3223 | MINOR(info.st_rdev), 0))) | |
b4f1578f | 3224 | return_0; |
165e4a11 AK |
3225 | } |
3226 | ||
3227 | if (!node->props.segment_count) { | |
b8175c33 | 3228 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
3229 | return 0; |
3230 | } | |
3231 | ||
2c44337b | 3232 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 3233 | |
b4f1578f AK |
3234 | if (!_add_area(node, seg, dev_node, offset)) |
3235 | return_0; | |
165e4a11 AK |
3236 | |
3237 | return 1; | |
db208f51 | 3238 | } |
bd90c6b2 | 3239 | |
6d04311e JEB |
3240 | int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset) |
3241 | { | |
3242 | struct load_segment *seg; | |
3243 | ||
3244 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
3245 | ||
415c0690 AK |
3246 | switch (seg->type) { |
3247 | case SEG_RAID1: | |
3248 | case SEG_RAID4: | |
3249 | case SEG_RAID5_LA: | |
3250 | case SEG_RAID5_RA: | |
3251 | case SEG_RAID5_LS: | |
3252 | case SEG_RAID5_RS: | |
3253 | case SEG_RAID6_ZR: | |
3254 | case SEG_RAID6_NR: | |
3255 | case SEG_RAID6_NC: | |
3256 | break; | |
3257 | default: | |
3258 | log_error("dm_tree_node_add_null_area() called on an unsupported segment type"); | |
3259 | return 0; | |
3260 | } | |
3261 | ||
6d04311e JEB |
3262 | if (!_add_area(node, seg, NULL, offset)) |
3263 | return_0; | |
3264 | ||
3265 | return 1; | |
3266 | } |