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Commit | Line | Data |
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3d0480ed | 1 | /* |
4251236e | 2 | * Copyright (C) 2005-2011 Red Hat, Inc. All rights reserved. |
3d0480ed AK |
3 | * |
4 | * This file is part of the device-mapper userspace tools. | |
5 | * | |
6 | * This copyrighted material is made available to anyone wishing to use, | |
7 | * modify, copy, or redistribute it subject to the terms and conditions | |
8 | * of the GNU Lesser General Public License v.2.1. | |
9 | * | |
10 | * You should have received a copy of the GNU Lesser General Public License | |
11 | * along with this program; if not, write to the Free Software Foundation, | |
12 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
13 | */ | |
14 | ||
3e5b6ed2 | 15 | #include "dmlib.h" |
3d0480ed AK |
16 | #include "libdm-targets.h" |
17 | #include "libdm-common.h" | |
3d0480ed | 18 | #include "kdev_t.h" |
0782ad50 | 19 | #include "dm-ioctl.h" |
3d0480ed AK |
20 | |
21 | #include <stdarg.h> | |
22 | #include <sys/param.h> | |
8f26e18c | 23 | #include <sys/utsname.h> |
3d0480ed | 24 | |
165e4a11 AK |
25 | #define MAX_TARGET_PARAMSIZE 500000 |
26 | ||
87f98002 AK |
27 | /* FIXME Fix interface so this is used only by LVM */ |
28 | #define UUID_PREFIX "LVM-" | |
29 | ||
b262f3e1 ZK |
30 | #define REPLICATOR_LOCAL_SITE 0 |
31 | ||
165e4a11 AK |
32 | /* Supported segment types */ |
33 | enum { | |
12ca060e MB |
34 | SEG_CRYPT, |
35 | SEG_ERROR, | |
165e4a11 AK |
36 | SEG_LINEAR, |
37 | SEG_MIRRORED, | |
b262f3e1 ZK |
38 | SEG_REPLICATOR, |
39 | SEG_REPLICATOR_DEV, | |
165e4a11 AK |
40 | SEG_SNAPSHOT, |
41 | SEG_SNAPSHOT_ORIGIN, | |
aa6f4e51 | 42 | SEG_SNAPSHOT_MERGE, |
165e4a11 AK |
43 | SEG_STRIPED, |
44 | SEG_ZERO, | |
4251236e ZK |
45 | SEG_THIN_POOL, |
46 | SEG_THIN, | |
cac52ca4 JEB |
47 | SEG_RAID1, |
48 | SEG_RAID4, | |
49 | SEG_RAID5_LA, | |
50 | SEG_RAID5_RA, | |
51 | SEG_RAID5_LS, | |
52 | SEG_RAID5_RS, | |
53 | SEG_RAID6_ZR, | |
54 | SEG_RAID6_NR, | |
55 | SEG_RAID6_NC, | |
56 | SEG_LAST, | |
165e4a11 | 57 | }; |
b4f1578f | 58 | |
165e4a11 AK |
59 | /* FIXME Add crypt and multipath support */ |
60 | ||
61 | struct { | |
62 | unsigned type; | |
63 | const char *target; | |
64 | } dm_segtypes[] = { | |
12ca060e | 65 | { SEG_CRYPT, "crypt" }, |
165e4a11 AK |
66 | { SEG_ERROR, "error" }, |
67 | { SEG_LINEAR, "linear" }, | |
68 | { SEG_MIRRORED, "mirror" }, | |
b262f3e1 ZK |
69 | { SEG_REPLICATOR, "replicator" }, |
70 | { SEG_REPLICATOR_DEV, "replicator-dev" }, | |
165e4a11 AK |
71 | { SEG_SNAPSHOT, "snapshot" }, |
72 | { SEG_SNAPSHOT_ORIGIN, "snapshot-origin" }, | |
aa6f4e51 | 73 | { SEG_SNAPSHOT_MERGE, "snapshot-merge" }, |
165e4a11 AK |
74 | { SEG_STRIPED, "striped" }, |
75 | { SEG_ZERO, "zero"}, | |
4251236e ZK |
76 | { SEG_THIN_POOL, "thin-pool"}, |
77 | { SEG_THIN, "thin"}, | |
cac52ca4 JEB |
78 | { SEG_RAID1, "raid1"}, |
79 | { SEG_RAID4, "raid4"}, | |
80 | { SEG_RAID5_LA, "raid5_la"}, | |
81 | { SEG_RAID5_RA, "raid5_ra"}, | |
82 | { SEG_RAID5_LS, "raid5_ls"}, | |
83 | { SEG_RAID5_RS, "raid5_rs"}, | |
84 | { SEG_RAID6_ZR, "raid6_zr"}, | |
85 | { SEG_RAID6_NR, "raid6_nr"}, | |
86 | { SEG_RAID6_NC, "raid6_nc"}, | |
ee05be08 ZK |
87 | |
88 | /* | |
89 | *WARNING: Since 'raid' target overloads this 1:1 mapping table | |
90 | * for search do not add new enum elements past them! | |
91 | */ | |
cac52ca4 JEB |
92 | { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */ |
93 | { SEG_RAID6_ZR, "raid6"}, /* same as "raid6_zr" */ | |
94 | { SEG_LAST, NULL }, | |
165e4a11 AK |
95 | }; |
96 | ||
97 | /* Some segment types have a list of areas of other devices attached */ | |
98 | struct seg_area { | |
2c44337b | 99 | struct dm_list list; |
165e4a11 | 100 | |
b4f1578f | 101 | struct dm_tree_node *dev_node; |
165e4a11 AK |
102 | |
103 | uint64_t offset; | |
b262f3e1 ZK |
104 | |
105 | unsigned rsite_index; /* Replicator site index */ | |
106 | struct dm_tree_node *slog; /* Replicator sync log node */ | |
107 | uint64_t region_size; /* Replicator sync log size */ | |
108 | uint32_t flags; /* Replicator sync log flags */ | |
109 | }; | |
110 | ||
2e732e96 ZK |
111 | struct dm_thin_message { |
112 | dm_thin_message_t type; | |
113 | union { | |
114 | struct { | |
115 | uint32_t device_id; | |
116 | uint32_t origin_id; | |
117 | } m_create_snap; | |
118 | struct { | |
119 | uint32_t device_id; | |
120 | } m_create_thin; | |
121 | struct { | |
122 | uint32_t device_id; | |
123 | } m_delete; | |
124 | struct { | |
125 | uint64_t current_id; | |
126 | uint64_t new_id; | |
127 | } m_set_transaction_id; | |
128 | struct { | |
129 | uint32_t device_id; | |
130 | uint64_t new_size; | |
131 | } m_trim; | |
132 | } u; | |
133 | }; | |
134 | ||
25e6ab87 ZK |
135 | struct thin_message { |
136 | struct dm_list list; | |
137 | struct dm_thin_message message; | |
660a42bc | 138 | int expected_errno; |
25e6ab87 ZK |
139 | }; |
140 | ||
b262f3e1 ZK |
141 | /* Replicator-log has a list of sites */ |
142 | /* FIXME: maybe move to seg_area too? */ | |
143 | struct replicator_site { | |
144 | struct dm_list list; | |
145 | ||
146 | unsigned rsite_index; | |
147 | dm_replicator_mode_t mode; | |
148 | uint32_t async_timeout; | |
149 | uint32_t fall_behind_ios; | |
150 | uint64_t fall_behind_data; | |
165e4a11 AK |
151 | }; |
152 | ||
153 | /* Per-segment properties */ | |
154 | struct load_segment { | |
2c44337b | 155 | struct dm_list list; |
165e4a11 AK |
156 | |
157 | unsigned type; | |
158 | ||
159 | uint64_t size; | |
160 | ||
b262f3e1 ZK |
161 | unsigned area_count; /* Linear + Striped + Mirrored + Crypt + Replicator */ |
162 | struct dm_list areas; /* Linear + Striped + Mirrored + Crypt + Replicator */ | |
165e4a11 | 163 | |
cac52ca4 | 164 | uint32_t stripe_size; /* Striped + raid */ |
165e4a11 AK |
165 | |
166 | int persistent; /* Snapshot */ | |
167 | uint32_t chunk_size; /* Snapshot */ | |
b4f1578f AK |
168 | struct dm_tree_node *cow; /* Snapshot */ |
169 | struct dm_tree_node *origin; /* Snapshot + Snapshot origin */ | |
aa6f4e51 | 170 | struct dm_tree_node *merge; /* Snapshot */ |
165e4a11 | 171 | |
b262f3e1 | 172 | struct dm_tree_node *log; /* Mirror + Replicator */ |
cac52ca4 | 173 | uint32_t region_size; /* Mirror + raid */ |
165e4a11 AK |
174 | unsigned clustered; /* Mirror */ |
175 | unsigned mirror_area_count; /* Mirror */ | |
dbcb64b8 | 176 | uint32_t flags; /* Mirror log */ |
67b25ed4 | 177 | char *uuid; /* Clustered mirror log */ |
12ca060e MB |
178 | |
179 | const char *cipher; /* Crypt */ | |
180 | const char *chainmode; /* Crypt */ | |
181 | const char *iv; /* Crypt */ | |
182 | uint64_t iv_offset; /* Crypt */ | |
183 | const char *key; /* Crypt */ | |
b262f3e1 ZK |
184 | |
185 | const char *rlog_type; /* Replicator */ | |
186 | struct dm_list rsites; /* Replicator */ | |
187 | unsigned rsite_count; /* Replicator */ | |
188 | unsigned rdevice_count; /* Replicator */ | |
189 | struct dm_tree_node *replicator;/* Replicator-dev */ | |
190 | uint64_t rdevice_index; /* Replicator-dev */ | |
f439e65b | 191 | |
40e5fd8b | 192 | uint64_t rebuilds; /* raid */ |
4251236e ZK |
193 | |
194 | struct dm_tree_node *metadata; /* Thin_pool */ | |
195 | struct dm_tree_node *pool; /* Thin_pool, Thin */ | |
25e6ab87 | 196 | struct dm_list thin_messages; /* Thin_pool */ |
bbcd37e4 | 197 | uint64_t transaction_id; /* Thin_pool */ |
e9156c2b | 198 | uint64_t low_water_mark; /* Thin_pool */ |
e0ea24be | 199 | uint32_t data_block_size; /* Thin_pool */ |
460c5991 | 200 | unsigned skip_block_zeroing; /* Thin_pool */ |
4251236e ZK |
201 | uint32_t device_id; /* Thin */ |
202 | ||
165e4a11 AK |
203 | }; |
204 | ||
205 | /* Per-device properties */ | |
206 | struct load_properties { | |
207 | int read_only; | |
208 | uint32_t major; | |
209 | uint32_t minor; | |
210 | ||
52b84409 AK |
211 | uint32_t read_ahead; |
212 | uint32_t read_ahead_flags; | |
213 | ||
165e4a11 | 214 | unsigned segment_count; |
bb875bb9 | 215 | unsigned size_changed; |
2c44337b | 216 | struct dm_list segs; |
165e4a11 AK |
217 | |
218 | const char *new_name; | |
566515c0 PR |
219 | |
220 | /* If immediate_dev_node is set to 1, try to create the dev node | |
221 | * as soon as possible (e.g. in preload stage even during traversal | |
222 | * and processing of dm tree). This will also flush all stacked dev | |
223 | * node operations, synchronizing with udev. | |
224 | */ | |
df390f17 AK |
225 | unsigned immediate_dev_node; |
226 | ||
227 | /* | |
228 | * If the device size changed from zero and this is set, | |
229 | * don't resume the device immediately, even if the device | |
230 | * has parents. This works provided the parents do not | |
231 | * validate the device size and is required by pvmove to | |
232 | * avoid starting the mirror resync operation too early. | |
233 | */ | |
234 | unsigned delay_resume_if_new; | |
bbcd37e4 ZK |
235 | |
236 | /* Send messages for this node in preload */ | |
237 | unsigned send_messages; | |
165e4a11 AK |
238 | }; |
239 | ||
240 | /* Two of these used to join two nodes with uses and used_by. */ | |
b4f1578f | 241 | struct dm_tree_link { |
2c44337b | 242 | struct dm_list list; |
b4f1578f | 243 | struct dm_tree_node *node; |
165e4a11 AK |
244 | }; |
245 | ||
b4f1578f AK |
246 | struct dm_tree_node { |
247 | struct dm_tree *dtree; | |
3d0480ed | 248 | |
40e5fd8b AK |
249 | const char *name; |
250 | const char *uuid; | |
251 | struct dm_info info; | |
3d0480ed | 252 | |
40e5fd8b AK |
253 | struct dm_list uses; /* Nodes this node uses */ |
254 | struct dm_list used_by; /* Nodes that use this node */ | |
165e4a11 | 255 | |
56c28292 AK |
256 | int activation_priority; /* 0 gets activated first */ |
257 | ||
f16aea9e PR |
258 | uint16_t udev_flags; /* Udev control flags */ |
259 | ||
165e4a11 AK |
260 | void *context; /* External supplied context */ |
261 | ||
262 | struct load_properties props; /* For creation/table (re)load */ | |
76d1aec8 ZK |
263 | |
264 | /* | |
265 | * If presuspend of child node is needed | |
266 | * Note: only direct child is allowed | |
267 | */ | |
268 | struct dm_tree_node *presuspend_node; | |
3d0480ed AK |
269 | }; |
270 | ||
b4f1578f | 271 | struct dm_tree { |
a3f6b2ce AK |
272 | struct dm_pool *mem; |
273 | struct dm_hash_table *devs; | |
165e4a11 | 274 | struct dm_hash_table *uuids; |
b4f1578f | 275 | struct dm_tree_node root; |
c55b1410 | 276 | int skip_lockfs; /* 1 skips lockfs (for non-snapshots) */ |
787200ef PR |
277 | int no_flush; /* 1 sets noflush (mirrors/multipath) */ |
278 | int retry_remove; /* 1 retries remove if not successful */ | |
bd90c6b2 | 279 | uint32_t cookie; |
3d0480ed AK |
280 | }; |
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 | ||
04bde319 ZK |
328 | static int _nodes_are_linked(const struct dm_tree_node *parent, |
329 | const struct dm_tree_node *child) | |
3d0480ed | 330 | { |
b4f1578f | 331 | struct dm_tree_link *dlink; |
3d0480ed | 332 | |
2c44337b | 333 | dm_list_iterate_items(dlink, &parent->uses) |
3d0480ed AK |
334 | if (dlink->node == child) |
335 | return 1; | |
3d0480ed AK |
336 | |
337 | return 0; | |
338 | } | |
339 | ||
2c44337b | 340 | static int _link(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 341 | { |
b4f1578f | 342 | struct dm_tree_link *dlink; |
3d0480ed | 343 | |
b4f1578f AK |
344 | if (!(dlink = dm_pool_alloc(node->dtree->mem, sizeof(*dlink)))) { |
345 | log_error("dtree link allocation failed"); | |
3d0480ed AK |
346 | return 0; |
347 | } | |
348 | ||
349 | dlink->node = node; | |
2c44337b | 350 | dm_list_add(list, &dlink->list); |
3d0480ed AK |
351 | |
352 | return 1; | |
353 | } | |
354 | ||
b4f1578f AK |
355 | static int _link_nodes(struct dm_tree_node *parent, |
356 | struct dm_tree_node *child) | |
3d0480ed AK |
357 | { |
358 | if (_nodes_are_linked(parent, child)) | |
359 | return 1; | |
360 | ||
361 | if (!_link(&parent->uses, child)) | |
362 | return 0; | |
363 | ||
364 | if (!_link(&child->used_by, parent)) | |
365 | return 0; | |
366 | ||
367 | return 1; | |
368 | } | |
369 | ||
2c44337b | 370 | static void _unlink(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 371 | { |
b4f1578f | 372 | struct dm_tree_link *dlink; |
3d0480ed | 373 | |
2c44337b | 374 | dm_list_iterate_items(dlink, list) |
3d0480ed | 375 | if (dlink->node == node) { |
2c44337b | 376 | dm_list_del(&dlink->list); |
3d0480ed AK |
377 | break; |
378 | } | |
3d0480ed AK |
379 | } |
380 | ||
b4f1578f AK |
381 | static void _unlink_nodes(struct dm_tree_node *parent, |
382 | struct dm_tree_node *child) | |
3d0480ed AK |
383 | { |
384 | if (!_nodes_are_linked(parent, child)) | |
385 | return; | |
386 | ||
387 | _unlink(&parent->uses, child); | |
388 | _unlink(&child->used_by, parent); | |
389 | } | |
390 | ||
b4f1578f | 391 | static int _add_to_toplevel(struct dm_tree_node *node) |
165e4a11 | 392 | { |
b4f1578f | 393 | return _link_nodes(&node->dtree->root, node); |
165e4a11 AK |
394 | } |
395 | ||
b4f1578f | 396 | static void _remove_from_toplevel(struct dm_tree_node *node) |
3d0480ed | 397 | { |
b1ebf028 | 398 | _unlink_nodes(&node->dtree->root, node); |
3d0480ed AK |
399 | } |
400 | ||
b4f1578f | 401 | static int _add_to_bottomlevel(struct dm_tree_node *node) |
3d0480ed | 402 | { |
b4f1578f | 403 | return _link_nodes(node, &node->dtree->root); |
3d0480ed AK |
404 | } |
405 | ||
b4f1578f | 406 | static void _remove_from_bottomlevel(struct dm_tree_node *node) |
165e4a11 | 407 | { |
b1ebf028 | 408 | _unlink_nodes(node, &node->dtree->root); |
165e4a11 AK |
409 | } |
410 | ||
b4f1578f | 411 | static int _link_tree_nodes(struct dm_tree_node *parent, struct dm_tree_node *child) |
165e4a11 AK |
412 | { |
413 | /* Don't link to root node if child already has a parent */ | |
f77736ca | 414 | if (parent == &parent->dtree->root) { |
b4f1578f | 415 | if (dm_tree_node_num_children(child, 1)) |
165e4a11 AK |
416 | return 1; |
417 | } else | |
418 | _remove_from_toplevel(child); | |
419 | ||
f77736ca | 420 | if (child == &child->dtree->root) { |
b4f1578f | 421 | if (dm_tree_node_num_children(parent, 0)) |
165e4a11 AK |
422 | return 1; |
423 | } else | |
424 | _remove_from_bottomlevel(parent); | |
425 | ||
426 | return _link_nodes(parent, child); | |
427 | } | |
428 | ||
b4f1578f | 429 | static struct dm_tree_node *_create_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
430 | const char *name, |
431 | const char *uuid, | |
165e4a11 | 432 | struct dm_info *info, |
f16aea9e PR |
433 | void *context, |
434 | uint16_t udev_flags) | |
3d0480ed | 435 | { |
b4f1578f | 436 | struct dm_tree_node *node; |
3d0480ed AK |
437 | uint64_t dev; |
438 | ||
b4f1578f AK |
439 | if (!(node = dm_pool_zalloc(dtree->mem, sizeof(*node)))) { |
440 | log_error("_create_dm_tree_node alloc failed"); | |
3d0480ed AK |
441 | return NULL; |
442 | } | |
443 | ||
b4f1578f | 444 | node->dtree = dtree; |
3d0480ed AK |
445 | |
446 | node->name = name; | |
447 | node->uuid = uuid; | |
448 | node->info = *info; | |
165e4a11 | 449 | node->context = context; |
f16aea9e | 450 | node->udev_flags = udev_flags; |
56c28292 | 451 | node->activation_priority = 0; |
3d0480ed | 452 | |
2c44337b AK |
453 | dm_list_init(&node->uses); |
454 | dm_list_init(&node->used_by); | |
455 | dm_list_init(&node->props.segs); | |
3d0480ed AK |
456 | |
457 | dev = MKDEV(info->major, info->minor); | |
458 | ||
b4f1578f | 459 | if (!dm_hash_insert_binary(dtree->devs, (const char *) &dev, |
3d0480ed | 460 | sizeof(dev), node)) { |
b4f1578f AK |
461 | log_error("dtree node hash insertion failed"); |
462 | dm_pool_free(dtree->mem, node); | |
3d0480ed AK |
463 | return NULL; |
464 | } | |
465 | ||
165e4a11 | 466 | if (uuid && *uuid && |
b4f1578f AK |
467 | !dm_hash_insert(dtree->uuids, uuid, node)) { |
468 | log_error("dtree uuid hash insertion failed"); | |
469 | dm_hash_remove_binary(dtree->devs, (const char *) &dev, | |
165e4a11 | 470 | sizeof(dev)); |
b4f1578f | 471 | dm_pool_free(dtree->mem, node); |
165e4a11 AK |
472 | return NULL; |
473 | } | |
474 | ||
3d0480ed AK |
475 | return node; |
476 | } | |
477 | ||
b4f1578f | 478 | static struct dm_tree_node *_find_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
479 | uint32_t major, uint32_t minor) |
480 | { | |
481 | uint64_t dev = MKDEV(major, minor); | |
482 | ||
b4f1578f | 483 | return dm_hash_lookup_binary(dtree->devs, (const char *) &dev, |
3d0480ed AK |
484 | sizeof(dev)); |
485 | } | |
486 | ||
b4f1578f | 487 | static struct dm_tree_node *_find_dm_tree_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
488 | const char *uuid) |
489 | { | |
87f98002 AK |
490 | struct dm_tree_node *node; |
491 | ||
492 | if ((node = dm_hash_lookup(dtree->uuids, uuid))) | |
493 | return node; | |
494 | ||
495 | if (strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) | |
496 | return NULL; | |
497 | ||
498 | return dm_hash_lookup(dtree->uuids, uuid + sizeof(UUID_PREFIX) - 1); | |
165e4a11 AK |
499 | } |
500 | ||
a3f6b2ce | 501 | static int _deps(struct dm_task **dmt, struct dm_pool *mem, uint32_t major, uint32_t minor, |
3d0480ed AK |
502 | const char **name, const char **uuid, |
503 | struct dm_info *info, struct dm_deps **deps) | |
504 | { | |
505 | memset(info, 0, sizeof(*info)); | |
506 | ||
507 | if (!dm_is_dm_major(major)) { | |
508 | *name = ""; | |
509 | *uuid = ""; | |
510 | *deps = NULL; | |
511 | info->major = major; | |
512 | info->minor = minor; | |
513 | info->exists = 0; | |
165e4a11 AK |
514 | info->live_table = 0; |
515 | info->inactive_table = 0; | |
516 | info->read_only = 0; | |
3d0480ed AK |
517 | return 1; |
518 | } | |
519 | ||
520 | if (!(*dmt = dm_task_create(DM_DEVICE_DEPS))) { | |
521 | log_error("deps dm_task creation failed"); | |
522 | return 0; | |
523 | } | |
524 | ||
b4f1578f AK |
525 | if (!dm_task_set_major(*dmt, major)) { |
526 | log_error("_deps: failed to set major for (%" PRIu32 ":%" PRIu32 ")", | |
527 | major, minor); | |
3d0480ed | 528 | goto failed; |
b4f1578f | 529 | } |
3d0480ed | 530 | |
b4f1578f AK |
531 | if (!dm_task_set_minor(*dmt, minor)) { |
532 | log_error("_deps: failed to set minor for (%" PRIu32 ":%" PRIu32 ")", | |
533 | major, minor); | |
3d0480ed | 534 | goto failed; |
b4f1578f | 535 | } |
3d0480ed | 536 | |
b4f1578f AK |
537 | if (!dm_task_run(*dmt)) { |
538 | log_error("_deps: task run failed for (%" PRIu32 ":%" PRIu32 ")", | |
539 | major, minor); | |
3d0480ed | 540 | goto failed; |
b4f1578f | 541 | } |
3d0480ed | 542 | |
b4f1578f AK |
543 | if (!dm_task_get_info(*dmt, info)) { |
544 | log_error("_deps: failed to get info for (%" PRIu32 ":%" PRIu32 ")", | |
545 | major, minor); | |
3d0480ed | 546 | goto failed; |
b4f1578f | 547 | } |
3d0480ed AK |
548 | |
549 | if (!info->exists) { | |
550 | *name = ""; | |
551 | *uuid = ""; | |
552 | *deps = NULL; | |
553 | } else { | |
554 | if (info->major != major) { | |
b4f1578f | 555 | log_error("Inconsistent dtree major number: %u != %u", |
3d0480ed AK |
556 | major, info->major); |
557 | goto failed; | |
558 | } | |
559 | if (info->minor != minor) { | |
b4f1578f | 560 | log_error("Inconsistent dtree minor number: %u != %u", |
3d0480ed AK |
561 | minor, info->minor); |
562 | goto failed; | |
563 | } | |
a3f6b2ce | 564 | if (!(*name = dm_pool_strdup(mem, dm_task_get_name(*dmt)))) { |
3d0480ed AK |
565 | log_error("name pool_strdup failed"); |
566 | goto failed; | |
567 | } | |
a3f6b2ce | 568 | if (!(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(*dmt)))) { |
3d0480ed AK |
569 | log_error("uuid pool_strdup failed"); |
570 | goto failed; | |
571 | } | |
572 | *deps = dm_task_get_deps(*dmt); | |
573 | } | |
574 | ||
575 | return 1; | |
576 | ||
577 | failed: | |
578 | dm_task_destroy(*dmt); | |
579 | return 0; | |
580 | } | |
581 | ||
b4f1578f AK |
582 | static struct dm_tree_node *_add_dev(struct dm_tree *dtree, |
583 | struct dm_tree_node *parent, | |
cda69e17 PR |
584 | uint32_t major, uint32_t minor, |
585 | uint16_t udev_flags) | |
3d0480ed AK |
586 | { |
587 | struct dm_task *dmt = NULL; | |
588 | struct dm_info info; | |
589 | struct dm_deps *deps = NULL; | |
590 | const char *name = NULL; | |
591 | const char *uuid = NULL; | |
b4f1578f | 592 | struct dm_tree_node *node = NULL; |
3d0480ed | 593 | uint32_t i; |
3d0480ed AK |
594 | int new = 0; |
595 | ||
596 | /* Already in tree? */ | |
b4f1578f AK |
597 | if (!(node = _find_dm_tree_node(dtree, major, minor))) { |
598 | if (!_deps(&dmt, dtree->mem, major, minor, &name, &uuid, &info, &deps)) | |
599 | return_NULL; | |
3d0480ed | 600 | |
f16aea9e | 601 | if (!(node = _create_dm_tree_node(dtree, name, uuid, &info, |
cda69e17 | 602 | NULL, udev_flags))) |
b4f1578f | 603 | goto_out; |
3d0480ed AK |
604 | new = 1; |
605 | } | |
606 | ||
165e4a11 AK |
607 | if (!_link_tree_nodes(parent, node)) { |
608 | node = NULL; | |
b4f1578f | 609 | goto_out; |
165e4a11 | 610 | } |
3d0480ed AK |
611 | |
612 | /* If node was already in tree, no need to recurse. */ | |
613 | if (!new) | |
165e4a11 | 614 | goto out; |
3d0480ed AK |
615 | |
616 | /* Can't recurse if not a mapped device or there are no dependencies */ | |
617 | if (!node->info.exists || !deps->count) { | |
b4f1578f AK |
618 | if (!_add_to_bottomlevel(node)) { |
619 | stack; | |
165e4a11 | 620 | node = NULL; |
b4f1578f | 621 | } |
165e4a11 | 622 | goto out; |
3d0480ed AK |
623 | } |
624 | ||
625 | /* Add dependencies to tree */ | |
626 | for (i = 0; i < deps->count; i++) | |
b4f1578f | 627 | if (!_add_dev(dtree, node, MAJOR(deps->device[i]), |
cda69e17 | 628 | MINOR(deps->device[i]), udev_flags)) { |
165e4a11 | 629 | node = NULL; |
b4f1578f | 630 | goto_out; |
165e4a11 | 631 | } |
3d0480ed | 632 | |
3d0480ed AK |
633 | out: |
634 | if (dmt) | |
635 | dm_task_destroy(dmt); | |
636 | ||
165e4a11 AK |
637 | return node; |
638 | } | |
639 | ||
b4f1578f | 640 | static int _node_clear_table(struct dm_tree_node *dnode) |
165e4a11 AK |
641 | { |
642 | struct dm_task *dmt; | |
643 | struct dm_info *info; | |
644 | const char *name; | |
645 | int r; | |
646 | ||
647 | if (!(info = &dnode->info)) { | |
b4f1578f | 648 | log_error("_node_clear_table failed: missing info"); |
165e4a11 AK |
649 | return 0; |
650 | } | |
651 | ||
b4f1578f AK |
652 | if (!(name = dm_tree_node_get_name(dnode))) { |
653 | log_error("_node_clear_table failed: missing name"); | |
165e4a11 AK |
654 | return 0; |
655 | } | |
656 | ||
657 | /* Is there a table? */ | |
658 | if (!info->exists || !info->inactive_table) | |
659 | return 1; | |
660 | ||
10d0d9c7 AK |
661 | // FIXME Get inactive deps. If any dev referenced has 1 opener and no live table, remove it after the clear. |
662 | ||
165e4a11 AK |
663 | log_verbose("Clearing inactive table %s (%" PRIu32 ":%" PRIu32 ")", |
664 | name, info->major, info->minor); | |
665 | ||
666 | if (!(dmt = dm_task_create(DM_DEVICE_CLEAR))) { | |
165e4a11 AK |
667 | log_error("Table clear dm_task creation failed for %s", name); |
668 | return 0; | |
669 | } | |
670 | ||
671 | if (!dm_task_set_major(dmt, info->major) || | |
672 | !dm_task_set_minor(dmt, info->minor)) { | |
673 | log_error("Failed to set device number for %s table clear", name); | |
674 | dm_task_destroy(dmt); | |
675 | return 0; | |
676 | } | |
677 | ||
678 | r = dm_task_run(dmt); | |
679 | ||
680 | if (!dm_task_get_info(dmt, info)) { | |
b4f1578f | 681 | log_error("_node_clear_table failed: info missing after running task for %s", name); |
165e4a11 AK |
682 | r = 0; |
683 | } | |
684 | ||
685 | dm_task_destroy(dmt); | |
686 | ||
3d0480ed AK |
687 | return r; |
688 | } | |
689 | ||
b4f1578f | 690 | struct dm_tree_node *dm_tree_add_new_dev(struct dm_tree *dtree, |
165e4a11 AK |
691 | const char *name, |
692 | const char *uuid, | |
693 | uint32_t major, uint32_t minor, | |
694 | int read_only, | |
695 | int clear_inactive, | |
696 | void *context) | |
697 | { | |
b4f1578f | 698 | struct dm_tree_node *dnode; |
165e4a11 AK |
699 | struct dm_info info; |
700 | const char *name2; | |
701 | const char *uuid2; | |
702 | ||
703 | /* Do we need to add node to tree? */ | |
b4f1578f AK |
704 | if (!(dnode = dm_tree_find_node_by_uuid(dtree, uuid))) { |
705 | if (!(name2 = dm_pool_strdup(dtree->mem, name))) { | |
165e4a11 AK |
706 | log_error("name pool_strdup failed"); |
707 | return NULL; | |
708 | } | |
b4f1578f | 709 | if (!(uuid2 = dm_pool_strdup(dtree->mem, uuid))) { |
165e4a11 AK |
710 | log_error("uuid pool_strdup failed"); |
711 | return NULL; | |
712 | } | |
713 | ||
714 | info.major = 0; | |
715 | info.minor = 0; | |
716 | info.exists = 0; | |
717 | info.live_table = 0; | |
718 | info.inactive_table = 0; | |
719 | info.read_only = 0; | |
720 | ||
f16aea9e PR |
721 | if (!(dnode = _create_dm_tree_node(dtree, name2, uuid2, &info, |
722 | context, 0))) | |
b4f1578f | 723 | return_NULL; |
165e4a11 AK |
724 | |
725 | /* Attach to root node until a table is supplied */ | |
b4f1578f AK |
726 | if (!_add_to_toplevel(dnode) || !_add_to_bottomlevel(dnode)) |
727 | return_NULL; | |
165e4a11 AK |
728 | |
729 | dnode->props.major = major; | |
730 | dnode->props.minor = minor; | |
731 | dnode->props.new_name = NULL; | |
bb875bb9 | 732 | dnode->props.size_changed = 0; |
165e4a11 AK |
733 | } else if (strcmp(name, dnode->name)) { |
734 | /* Do we need to rename node? */ | |
b4f1578f | 735 | if (!(dnode->props.new_name = dm_pool_strdup(dtree->mem, name))) { |
165e4a11 AK |
736 | log_error("name pool_strdup failed"); |
737 | return 0; | |
738 | } | |
739 | } | |
740 | ||
741 | dnode->props.read_only = read_only ? 1 : 0; | |
52b84409 AK |
742 | dnode->props.read_ahead = DM_READ_AHEAD_AUTO; |
743 | dnode->props.read_ahead_flags = 0; | |
165e4a11 | 744 | |
b4f1578f AK |
745 | if (clear_inactive && !_node_clear_table(dnode)) |
746 | return_NULL; | |
165e4a11 AK |
747 | |
748 | dnode->context = context; | |
f16aea9e | 749 | dnode->udev_flags = 0; |
165e4a11 AK |
750 | |
751 | return dnode; | |
752 | } | |
753 | ||
f16aea9e PR |
754 | struct dm_tree_node *dm_tree_add_new_dev_with_udev_flags(struct dm_tree *dtree, |
755 | const char *name, | |
756 | const char *uuid, | |
757 | uint32_t major, | |
758 | uint32_t minor, | |
759 | int read_only, | |
760 | int clear_inactive, | |
761 | void *context, | |
762 | uint16_t udev_flags) | |
763 | { | |
764 | struct dm_tree_node *node; | |
765 | ||
766 | if ((node = dm_tree_add_new_dev(dtree, name, uuid, major, minor, read_only, | |
767 | clear_inactive, context))) | |
768 | node->udev_flags = udev_flags; | |
769 | ||
770 | return node; | |
771 | } | |
772 | ||
83c606ae JEB |
773 | void dm_tree_node_set_udev_flags(struct dm_tree_node *dnode, uint16_t udev_flags) |
774 | ||
775 | { | |
776 | struct dm_info *dinfo = &dnode->info; | |
777 | ||
778 | if (udev_flags != dnode->udev_flags) | |
779 | log_debug("Resetting %s (%" PRIu32 ":%" PRIu32 | |
780 | ") udev_flags from 0x%x to 0x%x", | |
781 | dnode->name, dinfo->major, dinfo->minor, | |
782 | dnode->udev_flags, udev_flags); | |
783 | dnode->udev_flags = udev_flags; | |
784 | } | |
f16aea9e | 785 | |
52b84409 AK |
786 | void dm_tree_node_set_read_ahead(struct dm_tree_node *dnode, |
787 | uint32_t read_ahead, | |
788 | uint32_t read_ahead_flags) | |
08e64ce5 | 789 | { |
52b84409 AK |
790 | dnode->props.read_ahead = read_ahead; |
791 | dnode->props.read_ahead_flags = read_ahead_flags; | |
792 | } | |
793 | ||
76d1aec8 ZK |
794 | void dm_tree_node_set_presuspend_node(struct dm_tree_node *node, |
795 | struct dm_tree_node *presuspend_node) | |
796 | { | |
797 | node->presuspend_node = presuspend_node; | |
798 | } | |
799 | ||
b4f1578f | 800 | int dm_tree_add_dev(struct dm_tree *dtree, uint32_t major, uint32_t minor) |
3d0480ed | 801 | { |
cda69e17 PR |
802 | return _add_dev(dtree, &dtree->root, major, minor, 0) ? 1 : 0; |
803 | } | |
804 | ||
805 | int dm_tree_add_dev_with_udev_flags(struct dm_tree *dtree, uint32_t major, | |
806 | uint32_t minor, uint16_t udev_flags) | |
807 | { | |
808 | return _add_dev(dtree, &dtree->root, major, minor, udev_flags) ? 1 : 0; | |
3d0480ed AK |
809 | } |
810 | ||
04bde319 | 811 | const char *dm_tree_node_get_name(const struct dm_tree_node *node) |
3d0480ed AK |
812 | { |
813 | return node->info.exists ? node->name : ""; | |
814 | } | |
815 | ||
04bde319 | 816 | const char *dm_tree_node_get_uuid(const struct dm_tree_node *node) |
3d0480ed AK |
817 | { |
818 | return node->info.exists ? node->uuid : ""; | |
819 | } | |
820 | ||
04bde319 | 821 | const struct dm_info *dm_tree_node_get_info(const struct dm_tree_node *node) |
3d0480ed AK |
822 | { |
823 | return &node->info; | |
824 | } | |
825 | ||
04bde319 | 826 | void *dm_tree_node_get_context(const struct dm_tree_node *node) |
165e4a11 AK |
827 | { |
828 | return node->context; | |
829 | } | |
830 | ||
04bde319 | 831 | int dm_tree_node_size_changed(const struct dm_tree_node *dnode) |
eb91c4ee MB |
832 | { |
833 | return dnode->props.size_changed; | |
834 | } | |
835 | ||
04bde319 | 836 | int dm_tree_node_num_children(const struct dm_tree_node *node, uint32_t inverted) |
3d0480ed AK |
837 | { |
838 | if (inverted) { | |
b4f1578f | 839 | if (_nodes_are_linked(&node->dtree->root, node)) |
3d0480ed | 840 | return 0; |
2c44337b | 841 | return dm_list_size(&node->used_by); |
3d0480ed AK |
842 | } |
843 | ||
b4f1578f | 844 | if (_nodes_are_linked(node, &node->dtree->root)) |
3d0480ed AK |
845 | return 0; |
846 | ||
2c44337b | 847 | return dm_list_size(&node->uses); |
3d0480ed AK |
848 | } |
849 | ||
2b69db1f AK |
850 | /* |
851 | * Returns 1 if no prefix supplied | |
852 | */ | |
853 | static int _uuid_prefix_matches(const char *uuid, const char *uuid_prefix, size_t uuid_prefix_len) | |
854 | { | |
855 | if (!uuid_prefix) | |
856 | return 1; | |
857 | ||
858 | if (!strncmp(uuid, uuid_prefix, uuid_prefix_len)) | |
859 | return 1; | |
860 | ||
861 | /* Handle transition: active device uuids might be missing the prefix */ | |
862 | if (uuid_prefix_len <= 4) | |
863 | return 0; | |
864 | ||
87f98002 | 865 | if (!strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) |
872dea04 AK |
866 | return 0; |
867 | ||
87f98002 | 868 | if (strncmp(uuid_prefix, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) |
2b69db1f AK |
869 | return 0; |
870 | ||
87f98002 | 871 | if (!strncmp(uuid, uuid_prefix + sizeof(UUID_PREFIX) - 1, uuid_prefix_len - (sizeof(UUID_PREFIX) - 1))) |
2b69db1f AK |
872 | return 1; |
873 | ||
874 | return 0; | |
875 | } | |
876 | ||
690a5da2 AK |
877 | /* |
878 | * Returns 1 if no children. | |
879 | */ | |
b4f1578f | 880 | static int _children_suspended(struct dm_tree_node *node, |
690a5da2 AK |
881 | uint32_t inverted, |
882 | const char *uuid_prefix, | |
883 | size_t uuid_prefix_len) | |
884 | { | |
2c44337b | 885 | struct dm_list *list; |
b4f1578f | 886 | struct dm_tree_link *dlink; |
690a5da2 AK |
887 | const struct dm_info *dinfo; |
888 | const char *uuid; | |
889 | ||
890 | if (inverted) { | |
b4f1578f | 891 | if (_nodes_are_linked(&node->dtree->root, node)) |
690a5da2 AK |
892 | return 1; |
893 | list = &node->used_by; | |
894 | } else { | |
b4f1578f | 895 | if (_nodes_are_linked(node, &node->dtree->root)) |
690a5da2 AK |
896 | return 1; |
897 | list = &node->uses; | |
898 | } | |
899 | ||
2c44337b | 900 | dm_list_iterate_items(dlink, list) { |
b4f1578f | 901 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { |
690a5da2 AK |
902 | stack; |
903 | continue; | |
904 | } | |
905 | ||
906 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 907 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 AK |
908 | continue; |
909 | ||
76d1aec8 ZK |
910 | /* Ignore if parent node wants to presuspend this node */ |
911 | if (dlink->node->presuspend_node == node) | |
912 | continue; | |
913 | ||
b4f1578f AK |
914 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { |
915 | stack; /* FIXME Is this normal? */ | |
690a5da2 AK |
916 | return 0; |
917 | } | |
918 | ||
919 | if (!dinfo->suspended) | |
920 | return 0; | |
921 | } | |
922 | ||
923 | return 1; | |
924 | } | |
925 | ||
3d0480ed AK |
926 | /* |
927 | * Set major and minor to zero for root of tree. | |
928 | */ | |
b4f1578f | 929 | struct dm_tree_node *dm_tree_find_node(struct dm_tree *dtree, |
3d0480ed AK |
930 | uint32_t major, |
931 | uint32_t minor) | |
932 | { | |
933 | if (!major && !minor) | |
b4f1578f | 934 | return &dtree->root; |
3d0480ed | 935 | |
b4f1578f | 936 | return _find_dm_tree_node(dtree, major, minor); |
3d0480ed AK |
937 | } |
938 | ||
165e4a11 AK |
939 | /* |
940 | * Set uuid to NULL for root of tree. | |
941 | */ | |
b4f1578f | 942 | struct dm_tree_node *dm_tree_find_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
943 | const char *uuid) |
944 | { | |
945 | if (!uuid || !*uuid) | |
b4f1578f | 946 | return &dtree->root; |
165e4a11 | 947 | |
b4f1578f | 948 | return _find_dm_tree_node_by_uuid(dtree, uuid); |
165e4a11 AK |
949 | } |
950 | ||
3d0480ed AK |
951 | /* |
952 | * First time set *handle to NULL. | |
953 | * Set inverted to invert the tree. | |
954 | */ | |
b4f1578f | 955 | struct dm_tree_node *dm_tree_next_child(void **handle, |
04bde319 ZK |
956 | const struct dm_tree_node *parent, |
957 | uint32_t inverted) | |
3d0480ed | 958 | { |
2c44337b | 959 | struct dm_list **dlink = (struct dm_list **) handle; |
04bde319 | 960 | const struct dm_list *use_list; |
3d0480ed AK |
961 | |
962 | if (inverted) | |
963 | use_list = &parent->used_by; | |
964 | else | |
965 | use_list = &parent->uses; | |
966 | ||
967 | if (!*dlink) | |
2c44337b | 968 | *dlink = dm_list_first(use_list); |
3d0480ed | 969 | else |
2c44337b | 970 | *dlink = dm_list_next(use_list, *dlink); |
3d0480ed | 971 | |
2c44337b | 972 | return (*dlink) ? dm_list_item(*dlink, struct dm_tree_link)->node : NULL; |
3d0480ed AK |
973 | } |
974 | ||
3e8c6b73 | 975 | /* |
a6d97ede | 976 | * Deactivate a device with its dependencies if the uuid prefix matches. |
3e8c6b73 | 977 | */ |
db208f51 AK |
978 | static int _info_by_dev(uint32_t major, uint32_t minor, int with_open_count, |
979 | struct dm_info *info) | |
3e8c6b73 AK |
980 | { |
981 | struct dm_task *dmt; | |
982 | int r; | |
983 | ||
984 | if (!(dmt = dm_task_create(DM_DEVICE_INFO))) { | |
985 | log_error("_info_by_dev: dm_task creation failed"); | |
986 | return 0; | |
987 | } | |
988 | ||
989 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
990 | log_error("_info_by_dev: Failed to set device number"); | |
991 | dm_task_destroy(dmt); | |
992 | return 0; | |
993 | } | |
994 | ||
db208f51 AK |
995 | if (!with_open_count && !dm_task_no_open_count(dmt)) |
996 | log_error("Failed to disable open_count"); | |
997 | ||
3e8c6b73 AK |
998 | if ((r = dm_task_run(dmt))) |
999 | r = dm_task_get_info(dmt, info); | |
1000 | ||
1001 | dm_task_destroy(dmt); | |
1002 | ||
1003 | return r; | |
1004 | } | |
1005 | ||
4ce43894 | 1006 | static int _check_device_not_in_use(const char *name, struct dm_info *info) |
125712be PR |
1007 | { |
1008 | if (!info->exists) | |
1009 | return 1; | |
1010 | ||
1011 | /* If sysfs is not used, use open_count information only. */ | |
c3e5b497 PR |
1012 | if (!*dm_sysfs_dir()) { |
1013 | if (info->open_count) { | |
4ce43894 ZK |
1014 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") in use", |
1015 | name, info->major, info->minor); | |
c3e5b497 PR |
1016 | return 0; |
1017 | } | |
1018 | ||
1019 | return 1; | |
1020 | } | |
125712be PR |
1021 | |
1022 | if (dm_device_has_holders(info->major, info->minor)) { | |
4ce43894 ZK |
1023 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") is used " |
1024 | "by another device.", name, info->major, info->minor); | |
125712be PR |
1025 | return 0; |
1026 | } | |
1027 | ||
1028 | if (dm_device_has_mounted_fs(info->major, info->minor)) { | |
4ce43894 ZK |
1029 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") contains " |
1030 | "a filesystem in use.", name, info->major, info->minor); | |
125712be PR |
1031 | return 0; |
1032 | } | |
1033 | ||
1034 | return 1; | |
1035 | } | |
1036 | ||
f3ef15ef ZK |
1037 | /* Check if all parent nodes of given node have open_count == 0 */ |
1038 | static int _node_has_closed_parents(struct dm_tree_node *node, | |
1039 | const char *uuid_prefix, | |
1040 | size_t uuid_prefix_len) | |
1041 | { | |
1042 | struct dm_tree_link *dlink; | |
1043 | const struct dm_info *dinfo; | |
1044 | struct dm_info info; | |
1045 | const char *uuid; | |
1046 | ||
1047 | /* Iterate through parents of this node */ | |
1048 | dm_list_iterate_items(dlink, &node->used_by) { | |
1049 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { | |
1050 | stack; | |
1051 | continue; | |
1052 | } | |
1053 | ||
1054 | /* Ignore if it doesn't belong to this VG */ | |
1055 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) | |
1056 | continue; | |
1057 | ||
1058 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { | |
1059 | stack; /* FIXME Is this normal? */ | |
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | /* Refresh open_count */ | |
1064 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) || | |
1065 | !info.exists) | |
1066 | continue; | |
1067 | ||
eb418883 ZK |
1068 | if (info.open_count) { |
1069 | log_debug("Node %s %d:%d has open_count %d", uuid_prefix, | |
1070 | dinfo->major, dinfo->minor, info.open_count); | |
f3ef15ef | 1071 | return 0; |
eb418883 | 1072 | } |
f3ef15ef ZK |
1073 | } |
1074 | ||
1075 | return 1; | |
1076 | } | |
1077 | ||
f16aea9e | 1078 | static int _deactivate_node(const char *name, uint32_t major, uint32_t minor, |
787200ef | 1079 | uint32_t *cookie, uint16_t udev_flags, int retry) |
3e8c6b73 AK |
1080 | { |
1081 | struct dm_task *dmt; | |
bd90c6b2 | 1082 | int r = 0; |
3e8c6b73 AK |
1083 | |
1084 | log_verbose("Removing %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1085 | ||
1086 | if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) { | |
1087 | log_error("Deactivation dm_task creation failed for %s", name); | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1092 | log_error("Failed to set device number for %s deactivation", name); | |
bd90c6b2 | 1093 | goto out; |
3e8c6b73 AK |
1094 | } |
1095 | ||
1096 | if (!dm_task_no_open_count(dmt)) | |
1097 | log_error("Failed to disable open_count"); | |
1098 | ||
f16aea9e | 1099 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1100 | goto out; |
1101 | ||
787200ef PR |
1102 | |
1103 | if (retry) | |
1104 | dm_task_retry_remove(dmt); | |
1105 | ||
3e8c6b73 AK |
1106 | r = dm_task_run(dmt); |
1107 | ||
0437bccc AK |
1108 | /* FIXME Until kernel returns actual name so dm-iface.c can handle it */ |
1109 | rm_dev_node(name, dmt->cookie_set && !(udev_flags & DM_UDEV_DISABLE_DM_RULES_FLAG), | |
9032898e | 1110 | dmt->cookie_set && (udev_flags & DM_UDEV_DISABLE_LIBRARY_FALLBACK)); |
165e4a11 | 1111 | |
db208f51 AK |
1112 | /* FIXME Remove node from tree or mark invalid? */ |
1113 | ||
bd90c6b2 | 1114 | out: |
db208f51 AK |
1115 | dm_task_destroy(dmt); |
1116 | ||
1117 | return r; | |
1118 | } | |
1119 | ||
bd90c6b2 | 1120 | static int _rename_node(const char *old_name, const char *new_name, uint32_t major, |
f16aea9e | 1121 | uint32_t minor, uint32_t *cookie, uint16_t udev_flags) |
165e4a11 AK |
1122 | { |
1123 | struct dm_task *dmt; | |
1124 | int r = 0; | |
1125 | ||
1126 | log_verbose("Renaming %s (%" PRIu32 ":%" PRIu32 ") to %s", old_name, major, minor, new_name); | |
1127 | ||
1128 | if (!(dmt = dm_task_create(DM_DEVICE_RENAME))) { | |
1129 | log_error("Rename dm_task creation failed for %s", old_name); | |
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | if (!dm_task_set_name(dmt, old_name)) { | |
1134 | log_error("Failed to set name for %s rename.", old_name); | |
1135 | goto out; | |
1136 | } | |
1137 | ||
b4f1578f | 1138 | if (!dm_task_set_newname(dmt, new_name)) |
40e5fd8b | 1139 | goto_out; |
165e4a11 AK |
1140 | |
1141 | if (!dm_task_no_open_count(dmt)) | |
1142 | log_error("Failed to disable open_count"); | |
1143 | ||
f16aea9e | 1144 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1145 | goto out; |
1146 | ||
165e4a11 AK |
1147 | r = dm_task_run(dmt); |
1148 | ||
1149 | out: | |
1150 | dm_task_destroy(dmt); | |
1151 | ||
1152 | return r; | |
1153 | } | |
1154 | ||
165e4a11 AK |
1155 | /* FIXME Merge with _suspend_node? */ |
1156 | static int _resume_node(const char *name, uint32_t major, uint32_t minor, | |
52b84409 | 1157 | uint32_t read_ahead, uint32_t read_ahead_flags, |
f16aea9e | 1158 | struct dm_info *newinfo, uint32_t *cookie, |
1840aa09 | 1159 | uint16_t udev_flags, int already_suspended) |
165e4a11 AK |
1160 | { |
1161 | struct dm_task *dmt; | |
bd90c6b2 | 1162 | int r = 0; |
165e4a11 AK |
1163 | |
1164 | log_verbose("Resuming %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1165 | ||
1166 | if (!(dmt = dm_task_create(DM_DEVICE_RESUME))) { | |
9a8f192a | 1167 | log_debug("Suspend dm_task creation failed for %s.", name); |
165e4a11 AK |
1168 | return 0; |
1169 | } | |
1170 | ||
0b7d16bc AK |
1171 | /* FIXME Kernel should fill in name on return instead */ |
1172 | if (!dm_task_set_name(dmt, name)) { | |
9a8f192a | 1173 | log_debug("Failed to set device name for %s resumption.", name); |
bd90c6b2 | 1174 | goto out; |
0b7d16bc AK |
1175 | } |
1176 | ||
165e4a11 AK |
1177 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { |
1178 | log_error("Failed to set device number for %s resumption.", name); | |
bd90c6b2 | 1179 | goto out; |
165e4a11 AK |
1180 | } |
1181 | ||
1182 | if (!dm_task_no_open_count(dmt)) | |
1183 | log_error("Failed to disable open_count"); | |
1184 | ||
52b84409 AK |
1185 | if (!dm_task_set_read_ahead(dmt, read_ahead, read_ahead_flags)) |
1186 | log_error("Failed to set read ahead"); | |
1187 | ||
f16aea9e | 1188 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
9a8f192a | 1189 | goto_out; |
bd90c6b2 | 1190 | |
9a8f192a ZK |
1191 | if (!(r = dm_task_run(dmt))) |
1192 | goto_out; | |
1193 | ||
1194 | if (already_suspended) | |
1195 | dec_suspended(); | |
1196 | ||
1197 | if (!(r = dm_task_get_info(dmt, newinfo))) | |
1198 | stack; | |
165e4a11 | 1199 | |
bd90c6b2 | 1200 | out: |
165e4a11 AK |
1201 | dm_task_destroy(dmt); |
1202 | ||
1203 | return r; | |
1204 | } | |
1205 | ||
db208f51 | 1206 | static int _suspend_node(const char *name, uint32_t major, uint32_t minor, |
b9ffd32c | 1207 | int skip_lockfs, int no_flush, struct dm_info *newinfo) |
db208f51 AK |
1208 | { |
1209 | struct dm_task *dmt; | |
1210 | int r; | |
1211 | ||
b9ffd32c AK |
1212 | log_verbose("Suspending %s (%" PRIu32 ":%" PRIu32 ")%s%s", |
1213 | name, major, minor, | |
1214 | skip_lockfs ? "" : " with filesystem sync", | |
6e1898a5 | 1215 | no_flush ? "" : " with device flush"); |
db208f51 AK |
1216 | |
1217 | if (!(dmt = dm_task_create(DM_DEVICE_SUSPEND))) { | |
1218 | log_error("Suspend dm_task creation failed for %s", name); | |
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1223 | log_error("Failed to set device number for %s suspension.", name); | |
1224 | dm_task_destroy(dmt); | |
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | if (!dm_task_no_open_count(dmt)) | |
1229 | log_error("Failed to disable open_count"); | |
1230 | ||
c55b1410 AK |
1231 | if (skip_lockfs && !dm_task_skip_lockfs(dmt)) |
1232 | log_error("Failed to set skip_lockfs flag."); | |
1233 | ||
b9ffd32c AK |
1234 | if (no_flush && !dm_task_no_flush(dmt)) |
1235 | log_error("Failed to set no_flush flag."); | |
1236 | ||
1840aa09 AK |
1237 | if ((r = dm_task_run(dmt))) { |
1238 | inc_suspended(); | |
db208f51 | 1239 | r = dm_task_get_info(dmt, newinfo); |
1840aa09 | 1240 | } |
db208f51 | 1241 | |
3e8c6b73 AK |
1242 | dm_task_destroy(dmt); |
1243 | ||
1244 | return r; | |
1245 | } | |
1246 | ||
25e6ab87 | 1247 | static int _thin_pool_status_transaction_id(struct dm_tree_node *dnode, uint64_t *transaction_id) |
e0ea24be ZK |
1248 | { |
1249 | struct dm_task *dmt; | |
1250 | int r = 0; | |
1251 | uint64_t start, length; | |
1252 | char *type = NULL; | |
1253 | char *params = NULL; | |
e0ea24be | 1254 | |
25e6ab87 ZK |
1255 | if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) |
1256 | return_0; | |
e0ea24be | 1257 | |
25e6ab87 ZK |
1258 | if (!dm_task_set_major(dmt, dnode->info.major) || |
1259 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
1260 | log_error("Failed to set major minor."); | |
1261 | goto out; | |
e0ea24be ZK |
1262 | } |
1263 | ||
25e6ab87 ZK |
1264 | if (!dm_task_run(dmt)) |
1265 | goto_out; | |
1266 | ||
1267 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); | |
1268 | ||
1269 | if (type && (strcmp(type, "thin-pool") != 0)) { | |
c590a9cd | 1270 | log_error("Expected thin-pool target for %d:%d and got %s.", |
25e6ab87 | 1271 | dnode->info.major, dnode->info.minor, type); |
e0ea24be ZK |
1272 | goto out; |
1273 | } | |
1274 | ||
25e6ab87 | 1275 | if (!params || (sscanf(params, "%" PRIu64, transaction_id) != 1)) { |
c590a9cd | 1276 | log_error("Failed to parse transaction_id from %s.", params); |
e0ea24be ZK |
1277 | goto out; |
1278 | } | |
1279 | ||
25e6ab87 | 1280 | log_debug("Thin pool transaction id: %" PRIu64 " status: %s.", *transaction_id, params); |
e0ea24be | 1281 | |
25e6ab87 ZK |
1282 | r = 1; |
1283 | out: | |
1284 | dm_task_destroy(dmt); | |
e0ea24be | 1285 | |
25e6ab87 ZK |
1286 | return r; |
1287 | } | |
e0ea24be | 1288 | |
25e6ab87 ZK |
1289 | static int _thin_pool_node_message(struct dm_tree_node *dnode, struct thin_message *tm) |
1290 | { | |
1291 | struct dm_task *dmt; | |
1292 | struct dm_thin_message *m = &tm->message; | |
1293 | char buf[64]; | |
1294 | int r; | |
e0ea24be | 1295 | |
25e6ab87 ZK |
1296 | switch (m->type) { |
1297 | case DM_THIN_MESSAGE_CREATE_SNAP: | |
1298 | r = dm_snprintf(buf, sizeof(buf), "create_snap %u %u", | |
1299 | m->u.m_create_snap.device_id, | |
1300 | m->u.m_create_snap.origin_id); | |
1301 | break; | |
1302 | case DM_THIN_MESSAGE_CREATE_THIN: | |
1303 | r = dm_snprintf(buf, sizeof(buf), "create_thin %u", | |
1304 | m->u.m_create_thin.device_id); | |
1305 | break; | |
1306 | case DM_THIN_MESSAGE_DELETE: | |
1307 | r = dm_snprintf(buf, sizeof(buf), "delete %u", | |
1308 | m->u.m_delete.device_id); | |
1309 | break; | |
1310 | case DM_THIN_MESSAGE_TRIM: | |
1311 | r = dm_snprintf(buf, sizeof(buf), "trim %u %" PRIu64, | |
1312 | m->u.m_trim.device_id, | |
1313 | m->u.m_trim.new_size); | |
1314 | break; | |
1315 | case DM_THIN_MESSAGE_SET_TRANSACTION_ID: | |
1316 | r = dm_snprintf(buf, sizeof(buf), | |
1317 | "set_transaction_id %" PRIu64 " %" PRIu64, | |
1318 | m->u.m_set_transaction_id.current_id, | |
1319 | m->u.m_set_transaction_id.new_id); | |
1320 | break; | |
25de9add ZK |
1321 | default: |
1322 | r = -1; | |
25e6ab87 ZK |
1323 | } |
1324 | ||
25de9add | 1325 | if (r < 0) { |
25e6ab87 ZK |
1326 | log_error("Failed to prepare message."); |
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | r = 0; | |
1331 | ||
1332 | if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG))) | |
1333 | return_0; | |
1334 | ||
1335 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
1336 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
1337 | log_error("Failed to set message major minor."); | |
1338 | goto out; | |
1339 | } | |
1340 | ||
1341 | if (!dm_task_set_message(dmt, buf)) | |
1342 | goto_out; | |
1343 | ||
660a42bc ZK |
1344 | /* Internal functionality of dm_task */ |
1345 | dmt->expected_errno = tm->expected_errno; | |
1346 | ||
25e6ab87 ZK |
1347 | if (!dm_task_run(dmt)) |
1348 | goto_out; | |
1349 | ||
1350 | r = 1; | |
e0ea24be ZK |
1351 | out: |
1352 | dm_task_destroy(dmt); | |
1353 | ||
1354 | return r; | |
1355 | } | |
1356 | ||
11f64f0a ZK |
1357 | static int _node_send_messages(struct dm_tree_node *dnode, |
1358 | const char *uuid_prefix, | |
1359 | size_t uuid_prefix_len) | |
25e6ab87 ZK |
1360 | { |
1361 | struct load_segment *seg; | |
1362 | struct thin_message *tmsg; | |
11f64f0a | 1363 | uint64_t trans_id; |
25e6ab87 ZK |
1364 | const char *uuid; |
1365 | ||
bbcd37e4 | 1366 | if (!dnode->info.exists || (dm_list_size(&dnode->props.segs) != 1)) |
25e6ab87 ZK |
1367 | return 1; |
1368 | ||
1369 | seg = dm_list_item(dm_list_last(&dnode->props.segs), struct load_segment); | |
25e6ab87 ZK |
1370 | if (seg->type != SEG_THIN_POOL) |
1371 | return 1; | |
1372 | ||
1373 | if (!(uuid = dm_tree_node_get_uuid(dnode))) | |
1374 | return_0; | |
1375 | ||
1376 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) { | |
1377 | log_debug("UUID \"%s\" does not match.", uuid); | |
1378 | return 1; | |
1379 | } | |
1380 | ||
11f64f0a | 1381 | if (!_thin_pool_status_transaction_id(dnode, &trans_id)) |
bbcd37e4 | 1382 | goto_bad; |
25e6ab87 | 1383 | |
bbcd37e4 | 1384 | if (trans_id == seg->transaction_id) |
25e6ab87 ZK |
1385 | return 1; /* In sync - skip messages */ |
1386 | ||
bbcd37e4 | 1387 | if (trans_id != (seg->transaction_id - 1)) { |
25e6ab87 | 1388 | log_error("Thin pool transaction_id=%" PRIu64 ", while expected: %" PRIu64 ".", |
bbcd37e4 ZK |
1389 | trans_id, seg->transaction_id - 1); |
1390 | goto bad; /* Nothing to send */ | |
25e6ab87 ZK |
1391 | } |
1392 | ||
1393 | dm_list_iterate_items(tmsg, &seg->thin_messages) | |
1394 | if (!(_thin_pool_node_message(dnode, tmsg))) | |
bbcd37e4 | 1395 | goto_bad; |
25e6ab87 ZK |
1396 | |
1397 | return 1; | |
bbcd37e4 ZK |
1398 | bad: |
1399 | /* Try to deactivate */ | |
1400 | if (!(dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len))) | |
1401 | log_error("Failed to deactivate %s", dnode->name); | |
1402 | ||
1403 | return 0; | |
25e6ab87 ZK |
1404 | } |
1405 | ||
18e0f934 AK |
1406 | /* |
1407 | * FIXME Don't attempt to deactivate known internal dependencies. | |
1408 | */ | |
1409 | static int _dm_tree_deactivate_children(struct dm_tree_node *dnode, | |
1410 | const char *uuid_prefix, | |
1411 | size_t uuid_prefix_len, | |
1412 | unsigned level) | |
3e8c6b73 | 1413 | { |
b7eb2ad0 | 1414 | int r = 1; |
3e8c6b73 | 1415 | void *handle = NULL; |
b4f1578f | 1416 | struct dm_tree_node *child = dnode; |
3e8c6b73 AK |
1417 | struct dm_info info; |
1418 | const struct dm_info *dinfo; | |
1419 | const char *name; | |
1420 | const char *uuid; | |
1421 | ||
b4f1578f AK |
1422 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1423 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
3e8c6b73 AK |
1424 | stack; |
1425 | continue; | |
1426 | } | |
1427 | ||
b4f1578f | 1428 | if (!(name = dm_tree_node_get_name(child))) { |
3e8c6b73 AK |
1429 | stack; |
1430 | continue; | |
1431 | } | |
1432 | ||
b4f1578f | 1433 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
3e8c6b73 AK |
1434 | stack; |
1435 | continue; | |
1436 | } | |
1437 | ||
1438 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1439 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
3e8c6b73 | 1440 | continue; |
3e8c6b73 AK |
1441 | |
1442 | /* Refresh open_count */ | |
db208f51 | 1443 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) || |
f55021f4 | 1444 | !info.exists) |
3e8c6b73 AK |
1445 | continue; |
1446 | ||
4ce43894 ZK |
1447 | if (info.open_count) { |
1448 | /* Skip internal non-toplevel opened nodes */ | |
1449 | if (level) | |
1450 | continue; | |
1451 | ||
1452 | /* When retry is not allowed, error */ | |
1453 | if (!child->dtree->retry_remove) { | |
1454 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1455 | ":%" PRIu32 ")", name, info.major, info.minor); | |
1456 | r = 0; | |
1457 | continue; | |
1458 | } | |
1459 | ||
1460 | /* Check toplevel node for holders/mounted fs */ | |
1461 | if (!_check_device_not_in_use(name, &info)) { | |
1462 | stack; | |
1463 | r = 0; | |
1464 | continue; | |
1465 | } | |
1466 | /* Go on with retry */ | |
1467 | } | |
125712be | 1468 | |
f3ef15ef | 1469 | /* Also checking open_count in parent nodes of presuspend_node */ |
125712be | 1470 | if ((child->presuspend_node && |
f3ef15ef ZK |
1471 | !_node_has_closed_parents(child->presuspend_node, |
1472 | uuid_prefix, uuid_prefix_len))) { | |
18e0f934 AK |
1473 | /* Only report error from (likely non-internal) dependency at top level */ |
1474 | if (!level) { | |
1475 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1476 | ":%" PRIu32 ")", name, info.major, | |
1477 | info.minor); | |
1478 | r = 0; | |
1479 | } | |
f55021f4 AK |
1480 | continue; |
1481 | } | |
1482 | ||
76d1aec8 ZK |
1483 | /* Suspend child node first if requested */ |
1484 | if (child->presuspend_node && | |
1485 | !dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) | |
1486 | continue; | |
1487 | ||
f16aea9e | 1488 | if (!_deactivate_node(name, info.major, info.minor, |
787200ef | 1489 | &child->dtree->cookie, child->udev_flags, |
4ce43894 | 1490 | (level == 0) ? child->dtree->retry_remove : 0)) { |
3e8c6b73 AK |
1491 | log_error("Unable to deactivate %s (%" PRIu32 |
1492 | ":%" PRIu32 ")", name, info.major, | |
1493 | info.minor); | |
b7eb2ad0 | 1494 | r = 0; |
3e8c6b73 | 1495 | continue; |
f4249251 AK |
1496 | } else if (info.suspended) |
1497 | dec_suspended(); | |
3e8c6b73 | 1498 | |
18e0f934 AK |
1499 | if (dm_tree_node_num_children(child, 0)) { |
1500 | if (!_dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len, level + 1)) | |
b7eb2ad0 | 1501 | return_0; |
18e0f934 | 1502 | } |
3e8c6b73 AK |
1503 | } |
1504 | ||
b7eb2ad0 | 1505 | return r; |
3e8c6b73 | 1506 | } |
db208f51 | 1507 | |
18e0f934 AK |
1508 | int dm_tree_deactivate_children(struct dm_tree_node *dnode, |
1509 | const char *uuid_prefix, | |
1510 | size_t uuid_prefix_len) | |
1511 | { | |
1512 | return _dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len, 0); | |
1513 | } | |
1514 | ||
c55b1410 AK |
1515 | void dm_tree_skip_lockfs(struct dm_tree_node *dnode) |
1516 | { | |
1517 | dnode->dtree->skip_lockfs = 1; | |
1518 | } | |
1519 | ||
b9ffd32c AK |
1520 | void dm_tree_use_no_flush_suspend(struct dm_tree_node *dnode) |
1521 | { | |
1522 | dnode->dtree->no_flush = 1; | |
1523 | } | |
1524 | ||
787200ef PR |
1525 | void dm_tree_retry_remove(struct dm_tree_node *dnode) |
1526 | { | |
1527 | dnode->dtree->retry_remove = 1; | |
1528 | } | |
1529 | ||
b4f1578f | 1530 | int dm_tree_suspend_children(struct dm_tree_node *dnode, |
08e64ce5 ZK |
1531 | const char *uuid_prefix, |
1532 | size_t uuid_prefix_len) | |
db208f51 | 1533 | { |
68085c93 | 1534 | int r = 1; |
db208f51 | 1535 | void *handle = NULL; |
b4f1578f | 1536 | struct dm_tree_node *child = dnode; |
db208f51 AK |
1537 | struct dm_info info, newinfo; |
1538 | const struct dm_info *dinfo; | |
1539 | const char *name; | |
1540 | const char *uuid; | |
1541 | ||
690a5da2 | 1542 | /* Suspend nodes at this level of the tree */ |
b4f1578f AK |
1543 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1544 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
db208f51 AK |
1545 | stack; |
1546 | continue; | |
1547 | } | |
1548 | ||
b4f1578f | 1549 | if (!(name = dm_tree_node_get_name(child))) { |
db208f51 AK |
1550 | stack; |
1551 | continue; | |
1552 | } | |
1553 | ||
b4f1578f | 1554 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
db208f51 AK |
1555 | stack; |
1556 | continue; | |
1557 | } | |
1558 | ||
1559 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1560 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
db208f51 AK |
1561 | continue; |
1562 | ||
690a5da2 AK |
1563 | /* Ensure immediate parents are already suspended */ |
1564 | if (!_children_suspended(child, 1, uuid_prefix, uuid_prefix_len)) | |
1565 | continue; | |
1566 | ||
db208f51 | 1567 | if (!_info_by_dev(dinfo->major, dinfo->minor, 0, &info) || |
b700541f | 1568 | !info.exists || info.suspended) |
db208f51 AK |
1569 | continue; |
1570 | ||
c55b1410 | 1571 | if (!_suspend_node(name, info.major, info.minor, |
b9ffd32c AK |
1572 | child->dtree->skip_lockfs, |
1573 | child->dtree->no_flush, &newinfo)) { | |
db208f51 AK |
1574 | log_error("Unable to suspend %s (%" PRIu32 |
1575 | ":%" PRIu32 ")", name, info.major, | |
1576 | info.minor); | |
68085c93 | 1577 | r = 0; |
db208f51 AK |
1578 | continue; |
1579 | } | |
1580 | ||
1581 | /* Update cached info */ | |
1582 | child->info = newinfo; | |
690a5da2 AK |
1583 | } |
1584 | ||
1585 | /* Then suspend any child nodes */ | |
1586 | handle = NULL; | |
1587 | ||
b4f1578f AK |
1588 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1589 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
690a5da2 AK |
1590 | stack; |
1591 | continue; | |
1592 | } | |
1593 | ||
1594 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 | 1595 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 | 1596 | continue; |
db208f51 | 1597 | |
b4f1578f | 1598 | if (dm_tree_node_num_children(child, 0)) |
68085c93 MS |
1599 | if (!dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) |
1600 | return_0; | |
db208f51 AK |
1601 | } |
1602 | ||
68085c93 | 1603 | return r; |
db208f51 AK |
1604 | } |
1605 | ||
b4f1578f | 1606 | int dm_tree_activate_children(struct dm_tree_node *dnode, |
db208f51 AK |
1607 | const char *uuid_prefix, |
1608 | size_t uuid_prefix_len) | |
1609 | { | |
2ca6b865 | 1610 | int r = 1; |
db208f51 | 1611 | void *handle = NULL; |
b4f1578f | 1612 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
1613 | struct dm_info newinfo; |
1614 | const char *name; | |
db208f51 | 1615 | const char *uuid; |
56c28292 | 1616 | int priority; |
db208f51 | 1617 | |
165e4a11 | 1618 | /* Activate children first */ |
b4f1578f AK |
1619 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1620 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
165e4a11 AK |
1621 | stack; |
1622 | continue; | |
db208f51 AK |
1623 | } |
1624 | ||
908db078 AK |
1625 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1626 | continue; | |
db208f51 | 1627 | |
b4f1578f | 1628 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
1629 | if (!dm_tree_activate_children(child, uuid_prefix, uuid_prefix_len)) |
1630 | return_0; | |
56c28292 | 1631 | } |
165e4a11 | 1632 | |
56c28292 | 1633 | handle = NULL; |
165e4a11 | 1634 | |
aa6f4e51 | 1635 | for (priority = 0; priority < 3; priority++) { |
56c28292 | 1636 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
a5a31ce9 ZK |
1637 | if (priority != child->activation_priority) |
1638 | continue; | |
1639 | ||
56c28292 AK |
1640 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
1641 | stack; | |
1642 | continue; | |
165e4a11 | 1643 | } |
165e4a11 | 1644 | |
56c28292 AK |
1645 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1646 | continue; | |
165e4a11 | 1647 | |
56c28292 AK |
1648 | if (!(name = dm_tree_node_get_name(child))) { |
1649 | stack; | |
1650 | continue; | |
1651 | } | |
1652 | ||
1653 | /* Rename? */ | |
1654 | if (child->props.new_name) { | |
bd90c6b2 | 1655 | if (!_rename_node(name, child->props.new_name, child->info.major, |
f16aea9e PR |
1656 | child->info.minor, &child->dtree->cookie, |
1657 | child->udev_flags)) { | |
56c28292 AK |
1658 | log_error("Failed to rename %s (%" PRIu32 |
1659 | ":%" PRIu32 ") to %s", name, child->info.major, | |
1660 | child->info.minor, child->props.new_name); | |
1661 | return 0; | |
1662 | } | |
1663 | child->name = child->props.new_name; | |
1664 | child->props.new_name = NULL; | |
1665 | } | |
1666 | ||
1667 | if (!child->info.inactive_table && !child->info.suspended) | |
1668 | continue; | |
1669 | ||
bafa2f39 | 1670 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 1671 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 | 1672 | &newinfo, &child->dtree->cookie, child->udev_flags, child->info.suspended)) { |
56c28292 | 1673 | log_error("Unable to resume %s (%" PRIu32 |
bafa2f39 | 1674 | ":%" PRIu32 ")", child->name, child->info.major, |
56c28292 | 1675 | child->info.minor); |
2ca6b865 | 1676 | r = 0; |
56c28292 AK |
1677 | continue; |
1678 | } | |
1679 | ||
1680 | /* Update cached info */ | |
1681 | child->info = newinfo; | |
1682 | } | |
db208f51 AK |
1683 | } |
1684 | ||
165e4a11 AK |
1685 | handle = NULL; |
1686 | ||
2ca6b865 | 1687 | return r; |
165e4a11 AK |
1688 | } |
1689 | ||
b4f1578f | 1690 | static int _create_node(struct dm_tree_node *dnode) |
165e4a11 AK |
1691 | { |
1692 | int r = 0; | |
1693 | struct dm_task *dmt; | |
1694 | ||
1695 | log_verbose("Creating %s", dnode->name); | |
1696 | ||
1697 | if (!(dmt = dm_task_create(DM_DEVICE_CREATE))) { | |
1698 | log_error("Create dm_task creation failed for %s", dnode->name); | |
1699 | return 0; | |
1700 | } | |
1701 | ||
1702 | if (!dm_task_set_name(dmt, dnode->name)) { | |
1703 | log_error("Failed to set device name for %s", dnode->name); | |
1704 | goto out; | |
1705 | } | |
1706 | ||
1707 | if (!dm_task_set_uuid(dmt, dnode->uuid)) { | |
1708 | log_error("Failed to set uuid for %s", dnode->name); | |
1709 | goto out; | |
1710 | } | |
1711 | ||
1712 | if (dnode->props.major && | |
1713 | (!dm_task_set_major(dmt, dnode->props.major) || | |
1714 | !dm_task_set_minor(dmt, dnode->props.minor))) { | |
1715 | log_error("Failed to set device number for %s creation.", dnode->name); | |
1716 | goto out; | |
1717 | } | |
1718 | ||
1719 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
1720 | log_error("Failed to set read only flag for %s", dnode->name); | |
1721 | goto out; | |
1722 | } | |
1723 | ||
1724 | if (!dm_task_no_open_count(dmt)) | |
1725 | log_error("Failed to disable open_count"); | |
1726 | ||
1727 | if ((r = dm_task_run(dmt))) | |
1728 | r = dm_task_get_info(dmt, &dnode->info); | |
1729 | ||
1730 | out: | |
1731 | dm_task_destroy(dmt); | |
1732 | ||
1733 | return r; | |
1734 | } | |
1735 | ||
1736 | ||
b4f1578f | 1737 | static int _build_dev_string(char *devbuf, size_t bufsize, struct dm_tree_node *node) |
165e4a11 AK |
1738 | { |
1739 | if (!dm_format_dev(devbuf, bufsize, node->info.major, node->info.minor)) { | |
40e5fd8b AK |
1740 | log_error("Failed to format %s device number for %s as dm " |
1741 | "target (%u,%u)", | |
1742 | node->name, node->uuid, node->info.major, node->info.minor); | |
1743 | return 0; | |
165e4a11 AK |
1744 | } |
1745 | ||
1746 | return 1; | |
1747 | } | |
1748 | ||
ffa9b6a5 ZK |
1749 | /* simplify string emiting code */ |
1750 | #define EMIT_PARAMS(p, str...)\ | |
7b6c011c AK |
1751 | do {\ |
1752 | int w;\ | |
1753 | if ((w = dm_snprintf(params + p, paramsize - (size_t) p, str)) < 0) {\ | |
1754 | stack; /* Out of space */\ | |
1755 | return -1;\ | |
1756 | }\ | |
1757 | p += w;\ | |
1758 | } while (0) | |
ffa9b6a5 | 1759 | |
3c74075f JEB |
1760 | /* |
1761 | * _emit_areas_line | |
1762 | * | |
1763 | * Returns: 1 on success, 0 on failure | |
1764 | */ | |
08f1ddea | 1765 | static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)), |
4dcaa230 AK |
1766 | struct load_segment *seg, char *params, |
1767 | size_t paramsize, int *pos) | |
165e4a11 AK |
1768 | { |
1769 | struct seg_area *area; | |
7d7d93ac | 1770 | char devbuf[DM_FORMAT_DEV_BUFSIZE]; |
609faae9 | 1771 | unsigned first_time = 1; |
db3c1ac1 | 1772 | const char *logtype, *synctype; |
b262f3e1 | 1773 | unsigned log_parm_count; |
165e4a11 | 1774 | |
2c44337b | 1775 | dm_list_iterate_items(area, &seg->areas) { |
b262f3e1 ZK |
1776 | switch (seg->type) { |
1777 | case SEG_REPLICATOR_DEV: | |
6d04311e JEB |
1778 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1779 | return_0; | |
1780 | ||
b262f3e1 ZK |
1781 | EMIT_PARAMS(*pos, " %d 1 %s", area->rsite_index, devbuf); |
1782 | if (first_time) | |
1783 | EMIT_PARAMS(*pos, " nolog 0"); | |
1784 | else { | |
1785 | /* Remote devices */ | |
1786 | log_parm_count = (area->flags & | |
1787 | (DM_NOSYNC | DM_FORCESYNC)) ? 2 : 1; | |
1788 | ||
1789 | if (!area->slog) { | |
1790 | devbuf[0] = 0; /* Only core log parameters */ | |
1791 | logtype = "core"; | |
1792 | } else { | |
1793 | devbuf[0] = ' '; /* Extra space before device name */ | |
1794 | if (!_build_dev_string(devbuf + 1, | |
1795 | sizeof(devbuf) - 1, | |
1796 | area->slog)) | |
1797 | return_0; | |
1798 | logtype = "disk"; | |
1799 | log_parm_count++; /* Extra sync log device name parameter */ | |
1800 | } | |
1801 | ||
1802 | EMIT_PARAMS(*pos, " %s %u%s %" PRIu64, logtype, | |
1803 | log_parm_count, devbuf, area->region_size); | |
1804 | ||
db3c1ac1 AK |
1805 | synctype = (area->flags & DM_NOSYNC) ? |
1806 | " nosync" : (area->flags & DM_FORCESYNC) ? | |
1807 | " sync" : NULL; | |
b262f3e1 | 1808 | |
db3c1ac1 AK |
1809 | if (synctype) |
1810 | EMIT_PARAMS(*pos, "%s", synctype); | |
b262f3e1 ZK |
1811 | } |
1812 | break; | |
cac52ca4 JEB |
1813 | case SEG_RAID1: |
1814 | case SEG_RAID4: | |
1815 | case SEG_RAID5_LA: | |
1816 | case SEG_RAID5_RA: | |
1817 | case SEG_RAID5_LS: | |
1818 | case SEG_RAID5_RS: | |
1819 | case SEG_RAID6_ZR: | |
1820 | case SEG_RAID6_NR: | |
1821 | case SEG_RAID6_NC: | |
6d04311e JEB |
1822 | if (!area->dev_node) { |
1823 | EMIT_PARAMS(*pos, " -"); | |
1824 | break; | |
1825 | } | |
1826 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) | |
1827 | return_0; | |
1828 | ||
cac52ca4 JEB |
1829 | EMIT_PARAMS(*pos, " %s", devbuf); |
1830 | break; | |
b262f3e1 | 1831 | default: |
6d04311e JEB |
1832 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1833 | return_0; | |
1834 | ||
b262f3e1 ZK |
1835 | EMIT_PARAMS(*pos, "%s%s %" PRIu64, first_time ? "" : " ", |
1836 | devbuf, area->offset); | |
1837 | } | |
609faae9 AK |
1838 | |
1839 | first_time = 0; | |
165e4a11 AK |
1840 | } |
1841 | ||
1842 | return 1; | |
1843 | } | |
1844 | ||
b262f3e1 ZK |
1845 | static int _replicator_emit_segment_line(const struct load_segment *seg, char *params, |
1846 | size_t paramsize, int *pos) | |
1847 | { | |
1848 | const struct load_segment *rlog_seg; | |
1849 | struct replicator_site *rsite; | |
1850 | char rlogbuf[DM_FORMAT_DEV_BUFSIZE]; | |
1851 | unsigned parm_count; | |
1852 | ||
1853 | if (!seg->log || !_build_dev_string(rlogbuf, sizeof(rlogbuf), seg->log)) | |
1854 | return_0; | |
1855 | ||
1856 | rlog_seg = dm_list_item(dm_list_last(&seg->log->props.segs), | |
1857 | struct load_segment); | |
1858 | ||
1859 | EMIT_PARAMS(*pos, "%s 4 %s 0 auto %" PRIu64, | |
1860 | seg->rlog_type, rlogbuf, rlog_seg->size); | |
1861 | ||
1862 | dm_list_iterate_items(rsite, &seg->rsites) { | |
1863 | parm_count = (rsite->fall_behind_data | |
1864 | || rsite->fall_behind_ios | |
1865 | || rsite->async_timeout) ? 4 : 2; | |
1866 | ||
1867 | EMIT_PARAMS(*pos, " blockdev %u %u %s", parm_count, rsite->rsite_index, | |
1868 | (rsite->mode == DM_REPLICATOR_SYNC) ? "synchronous" : "asynchronous"); | |
1869 | ||
1870 | if (rsite->fall_behind_data) | |
1871 | EMIT_PARAMS(*pos, " data %" PRIu64, rsite->fall_behind_data); | |
1872 | else if (rsite->fall_behind_ios) | |
1873 | EMIT_PARAMS(*pos, " ios %" PRIu32, rsite->fall_behind_ios); | |
1874 | else if (rsite->async_timeout) | |
1875 | EMIT_PARAMS(*pos, " timeout %" PRIu32, rsite->async_timeout); | |
1876 | } | |
1877 | ||
1878 | return 1; | |
1879 | } | |
1880 | ||
3c74075f | 1881 | /* |
3c74075f JEB |
1882 | * Returns: 1 on success, 0 on failure |
1883 | */ | |
beecb1e1 ZK |
1884 | static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *seg, |
1885 | char *params, size_t paramsize) | |
165e4a11 | 1886 | { |
8f26e18c JEB |
1887 | int block_on_error = 0; |
1888 | int handle_errors = 0; | |
1889 | int dm_log_userspace = 0; | |
1890 | struct utsname uts; | |
dbcb64b8 | 1891 | unsigned log_parm_count; |
b39fdcf4 | 1892 | int pos = 0, parts; |
7d7d93ac | 1893 | char logbuf[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 1894 | const char *logtype; |
b39fdcf4 | 1895 | unsigned kmaj = 0, kmin = 0, krel = 0; |
165e4a11 | 1896 | |
b39fdcf4 MB |
1897 | if (uname(&uts) == -1) { |
1898 | log_error("Cannot read kernel release version."); | |
1899 | return 0; | |
1900 | } | |
1901 | ||
1902 | /* Kernels with a major number of 2 always had 3 parts. */ | |
1903 | parts = sscanf(uts.release, "%u.%u.%u", &kmaj, &kmin, &krel); | |
1904 | if (parts < 1 || (kmaj < 3 && parts < 3)) { | |
1905 | log_error("Wrong kernel release version %s.", uts.release); | |
30a65310 ZK |
1906 | return 0; |
1907 | } | |
67b25ed4 | 1908 | |
8f26e18c JEB |
1909 | if ((seg->flags & DM_BLOCK_ON_ERROR)) { |
1910 | /* | |
1911 | * Originally, block_on_error was an argument to the log | |
1912 | * portion of the mirror CTR table. It was renamed to | |
1913 | * "handle_errors" and now resides in the 'features' | |
1914 | * section of the mirror CTR table (i.e. at the end). | |
1915 | * | |
1916 | * We can identify whether to use "block_on_error" or | |
1917 | * "handle_errors" by the dm-mirror module's version | |
1918 | * number (>= 1.12) or by the kernel version (>= 2.6.22). | |
1919 | */ | |
ba61f848 | 1920 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 22)) |
8f26e18c JEB |
1921 | handle_errors = 1; |
1922 | else | |
1923 | block_on_error = 1; | |
1924 | } | |
1925 | ||
1926 | if (seg->clustered) { | |
1927 | /* Cluster mirrors require a UUID */ | |
1928 | if (!seg->uuid) | |
1929 | return_0; | |
1930 | ||
1931 | /* | |
1932 | * Cluster mirrors used to have their own log | |
1933 | * types. Now they are accessed through the | |
1934 | * userspace log type. | |
1935 | * | |
1936 | * The dm-log-userspace module was added to the | |
1937 | * 2.6.31 kernel. | |
1938 | */ | |
ba61f848 | 1939 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 31)) |
8f26e18c JEB |
1940 | dm_log_userspace = 1; |
1941 | } | |
1942 | ||
1943 | /* Region size */ | |
1944 | log_parm_count = 1; | |
1945 | ||
1946 | /* [no]sync, block_on_error etc. */ | |
1947 | log_parm_count += hweight32(seg->flags); | |
311d6d81 | 1948 | |
8f26e18c JEB |
1949 | /* "handle_errors" is a feature arg now */ |
1950 | if (handle_errors) | |
1951 | log_parm_count--; | |
1952 | ||
1953 | /* DM_CORELOG does not count in the param list */ | |
1954 | if (seg->flags & DM_CORELOG) | |
1955 | log_parm_count--; | |
1956 | ||
1957 | if (seg->clustered) { | |
1958 | log_parm_count++; /* For UUID */ | |
1959 | ||
1960 | if (!dm_log_userspace) | |
ffa9b6a5 | 1961 | EMIT_PARAMS(pos, "clustered-"); |
49b95a5e JEB |
1962 | else |
1963 | /* For clustered-* type field inserted later */ | |
1964 | log_parm_count++; | |
8f26e18c | 1965 | } |
dbcb64b8 | 1966 | |
8f26e18c JEB |
1967 | if (!seg->log) |
1968 | logtype = "core"; | |
1969 | else { | |
1970 | logtype = "disk"; | |
1971 | log_parm_count++; | |
1972 | if (!_build_dev_string(logbuf, sizeof(logbuf), seg->log)) | |
1973 | return_0; | |
1974 | } | |
dbcb64b8 | 1975 | |
8f26e18c JEB |
1976 | if (dm_log_userspace) |
1977 | EMIT_PARAMS(pos, "userspace %u %s clustered-%s", | |
1978 | log_parm_count, seg->uuid, logtype); | |
1979 | else | |
ffa9b6a5 | 1980 | EMIT_PARAMS(pos, "%s %u", logtype, log_parm_count); |
dbcb64b8 | 1981 | |
8f26e18c JEB |
1982 | if (seg->log) |
1983 | EMIT_PARAMS(pos, " %s", logbuf); | |
1984 | ||
1985 | EMIT_PARAMS(pos, " %u", seg->region_size); | |
dbcb64b8 | 1986 | |
8f26e18c JEB |
1987 | if (seg->clustered && !dm_log_userspace) |
1988 | EMIT_PARAMS(pos, " %s", seg->uuid); | |
67b25ed4 | 1989 | |
8f26e18c JEB |
1990 | if ((seg->flags & DM_NOSYNC)) |
1991 | EMIT_PARAMS(pos, " nosync"); | |
1992 | else if ((seg->flags & DM_FORCESYNC)) | |
1993 | EMIT_PARAMS(pos, " sync"); | |
dbcb64b8 | 1994 | |
8f26e18c JEB |
1995 | if (block_on_error) |
1996 | EMIT_PARAMS(pos, " block_on_error"); | |
1997 | ||
1998 | EMIT_PARAMS(pos, " %u ", seg->mirror_area_count); | |
1999 | ||
5f3325fc | 2000 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) |
3c74075f | 2001 | return_0; |
dbcb64b8 | 2002 | |
8f26e18c JEB |
2003 | if (handle_errors) |
2004 | EMIT_PARAMS(pos, " 1 handle_errors"); | |
ffa9b6a5 | 2005 | |
3c74075f | 2006 | return 1; |
8f26e18c JEB |
2007 | } |
2008 | ||
cac52ca4 JEB |
2009 | static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, |
2010 | uint32_t minor, struct load_segment *seg, | |
2011 | uint64_t *seg_start, char *params, | |
2012 | size_t paramsize) | |
2013 | { | |
ad2432dc | 2014 | uint32_t i; |
cac52ca4 JEB |
2015 | int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */ |
2016 | int pos = 0; | |
2017 | ||
2018 | if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC)) | |
2019 | param_count++; | |
2020 | ||
2021 | if (seg->region_size) | |
2022 | param_count += 2; | |
2023 | ||
ad2432dc MB |
2024 | /* rebuilds is 64-bit */ |
2025 | param_count += 2 * hweight32(seg->rebuilds & 0xFFFFFFFF); | |
2026 | param_count += 2 * hweight32(seg->rebuilds >> 32); | |
f439e65b | 2027 | |
cac52ca4 JEB |
2028 | if ((seg->type == SEG_RAID1) && seg->stripe_size) |
2029 | log_error("WARNING: Ignoring RAID1 stripe size"); | |
2030 | ||
2031 | EMIT_PARAMS(pos, "%s %d %u", dm_segtypes[seg->type].target, | |
2032 | param_count, seg->stripe_size); | |
2033 | ||
2034 | if (seg->flags & DM_NOSYNC) | |
2035 | EMIT_PARAMS(pos, " nosync"); | |
2036 | else if (seg->flags & DM_FORCESYNC) | |
2037 | EMIT_PARAMS(pos, " sync"); | |
2038 | ||
2039 | if (seg->region_size) | |
2040 | EMIT_PARAMS(pos, " region_size %u", seg->region_size); | |
2041 | ||
f439e65b JEB |
2042 | for (i = 0; i < (seg->area_count / 2); i++) |
2043 | if (seg->rebuilds & (1 << i)) | |
2044 | EMIT_PARAMS(pos, " rebuild %u", i); | |
2045 | ||
cac52ca4 JEB |
2046 | /* Print number of metadata/data device pairs */ |
2047 | EMIT_PARAMS(pos, " %u", seg->area_count/2); | |
2048 | ||
2049 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) | |
2050 | return_0; | |
2051 | ||
2052 | return 1; | |
2053 | } | |
2054 | ||
8f26e18c JEB |
2055 | static int _emit_segment_line(struct dm_task *dmt, uint32_t major, |
2056 | uint32_t minor, struct load_segment *seg, | |
2057 | uint64_t *seg_start, char *params, | |
2058 | size_t paramsize) | |
2059 | { | |
2060 | int pos = 0; | |
2061 | int r; | |
cac52ca4 | 2062 | int target_type_is_raid = 0; |
8f26e18c | 2063 | char originbuf[DM_FORMAT_DEV_BUFSIZE], cowbuf[DM_FORMAT_DEV_BUFSIZE]; |
4251236e | 2064 | char pool[DM_FORMAT_DEV_BUFSIZE], metadata[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 2065 | |
8f26e18c JEB |
2066 | switch(seg->type) { |
2067 | case SEG_ERROR: | |
2068 | case SEG_ZERO: | |
2069 | case SEG_LINEAR: | |
2070 | break; | |
2071 | case SEG_MIRRORED: | |
2072 | /* Mirrors are pretty complicated - now in separate function */ | |
beecb1e1 | 2073 | r = _mirror_emit_segment_line(dmt, seg, params, paramsize); |
3c74075f JEB |
2074 | if (!r) |
2075 | return_0; | |
165e4a11 | 2076 | break; |
b262f3e1 ZK |
2077 | case SEG_REPLICATOR: |
2078 | if ((r = _replicator_emit_segment_line(seg, params, paramsize, | |
2079 | &pos)) <= 0) { | |
2080 | stack; | |
2081 | return r; | |
2082 | } | |
2083 | break; | |
2084 | case SEG_REPLICATOR_DEV: | |
2085 | if (!seg->replicator || !_build_dev_string(originbuf, | |
2086 | sizeof(originbuf), | |
2087 | seg->replicator)) | |
2088 | return_0; | |
2089 | ||
2090 | EMIT_PARAMS(pos, "%s %" PRIu64, originbuf, seg->rdevice_index); | |
2091 | break; | |
165e4a11 | 2092 | case SEG_SNAPSHOT: |
aa6f4e51 | 2093 | case SEG_SNAPSHOT_MERGE: |
b4f1578f AK |
2094 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
2095 | return_0; | |
2096 | if (!_build_dev_string(cowbuf, sizeof(cowbuf), seg->cow)) | |
2097 | return_0; | |
ffa9b6a5 ZK |
2098 | EMIT_PARAMS(pos, "%s %s %c %d", originbuf, cowbuf, |
2099 | seg->persistent ? 'P' : 'N', seg->chunk_size); | |
165e4a11 AK |
2100 | break; |
2101 | case SEG_SNAPSHOT_ORIGIN: | |
b4f1578f AK |
2102 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
2103 | return_0; | |
ffa9b6a5 | 2104 | EMIT_PARAMS(pos, "%s", originbuf); |
165e4a11 AK |
2105 | break; |
2106 | case SEG_STRIPED: | |
609faae9 | 2107 | EMIT_PARAMS(pos, "%u %u ", seg->area_count, seg->stripe_size); |
165e4a11 | 2108 | break; |
12ca060e | 2109 | case SEG_CRYPT: |
609faae9 | 2110 | EMIT_PARAMS(pos, "%s%s%s%s%s %s %" PRIu64 " ", seg->cipher, |
12ca060e MB |
2111 | seg->chainmode ? "-" : "", seg->chainmode ?: "", |
2112 | seg->iv ? "-" : "", seg->iv ?: "", seg->key, | |
2113 | seg->iv_offset != DM_CRYPT_IV_DEFAULT ? | |
2114 | seg->iv_offset : *seg_start); | |
2115 | break; | |
cac52ca4 JEB |
2116 | case SEG_RAID1: |
2117 | case SEG_RAID4: | |
2118 | case SEG_RAID5_LA: | |
2119 | case SEG_RAID5_RA: | |
2120 | case SEG_RAID5_LS: | |
2121 | case SEG_RAID5_RS: | |
2122 | case SEG_RAID6_ZR: | |
2123 | case SEG_RAID6_NR: | |
2124 | case SEG_RAID6_NC: | |
2125 | target_type_is_raid = 1; | |
2126 | r = _raid_emit_segment_line(dmt, major, minor, seg, seg_start, | |
2127 | params, paramsize); | |
2128 | if (!r) | |
2129 | return_0; | |
2130 | ||
2131 | break; | |
4251236e ZK |
2132 | case SEG_THIN_POOL: |
2133 | if (!_build_dev_string(metadata, sizeof(metadata), seg->metadata)) | |
2134 | return_0; | |
2135 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
2136 | return_0; | |
2137 | EMIT_PARAMS(pos, "%s %s %d %" PRIu64 " %s", metadata, pool, | |
e9156c2b | 2138 | seg->data_block_size, seg->low_water_mark, |
ac08d9c0 | 2139 | seg->skip_block_zeroing ? "1 skip_block_zeroing" : "0"); |
4251236e ZK |
2140 | break; |
2141 | case SEG_THIN: | |
2142 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
2143 | return_0; | |
2144 | EMIT_PARAMS(pos, "%s %d", pool, seg->device_id); | |
2145 | break; | |
165e4a11 AK |
2146 | } |
2147 | ||
2148 | switch(seg->type) { | |
2149 | case SEG_ERROR: | |
b262f3e1 | 2150 | case SEG_REPLICATOR: |
165e4a11 AK |
2151 | case SEG_SNAPSHOT: |
2152 | case SEG_SNAPSHOT_ORIGIN: | |
aa6f4e51 | 2153 | case SEG_SNAPSHOT_MERGE: |
165e4a11 | 2154 | case SEG_ZERO: |
4251236e ZK |
2155 | case SEG_THIN_POOL: |
2156 | case SEG_THIN: | |
165e4a11 | 2157 | break; |
12ca060e | 2158 | case SEG_CRYPT: |
165e4a11 | 2159 | case SEG_LINEAR: |
b262f3e1 | 2160 | case SEG_REPLICATOR_DEV: |
165e4a11 AK |
2161 | case SEG_STRIPED: |
2162 | if ((r = _emit_areas_line(dmt, seg, params, paramsize, &pos)) <= 0) { | |
2163 | stack; | |
2164 | return r; | |
2165 | } | |
b6793963 AK |
2166 | if (!params[0]) { |
2167 | log_error("No parameters supplied for %s target " | |
2168 | "%u:%u.", dm_segtypes[seg->type].target, | |
812e10ac | 2169 | major, minor); |
b6793963 AK |
2170 | return 0; |
2171 | } | |
165e4a11 AK |
2172 | break; |
2173 | } | |
2174 | ||
4b2cae46 AK |
2175 | log_debug("Adding target to (%" PRIu32 ":%" PRIu32 "): %" PRIu64 |
2176 | " %" PRIu64 " %s %s", major, minor, | |
f439e65b JEB |
2177 | *seg_start, seg->size, target_type_is_raid ? "raid" : |
2178 | dm_segtypes[seg->type].target, params); | |
165e4a11 | 2179 | |
cac52ca4 JEB |
2180 | if (!dm_task_add_target(dmt, *seg_start, seg->size, |
2181 | target_type_is_raid ? "raid" : | |
2182 | dm_segtypes[seg->type].target, params)) | |
b4f1578f | 2183 | return_0; |
165e4a11 AK |
2184 | |
2185 | *seg_start += seg->size; | |
2186 | ||
2187 | return 1; | |
2188 | } | |
2189 | ||
ffa9b6a5 ZK |
2190 | #undef EMIT_PARAMS |
2191 | ||
4b2cae46 AK |
2192 | static int _emit_segment(struct dm_task *dmt, uint32_t major, uint32_t minor, |
2193 | struct load_segment *seg, uint64_t *seg_start) | |
165e4a11 AK |
2194 | { |
2195 | char *params; | |
2196 | size_t paramsize = 4096; | |
2197 | int ret; | |
2198 | ||
2199 | do { | |
2200 | if (!(params = dm_malloc(paramsize))) { | |
2201 | log_error("Insufficient space for target parameters."); | |
2202 | return 0; | |
2203 | } | |
2204 | ||
12ea7cb1 | 2205 | params[0] = '\0'; |
4b2cae46 AK |
2206 | ret = _emit_segment_line(dmt, major, minor, seg, seg_start, |
2207 | params, paramsize); | |
165e4a11 AK |
2208 | dm_free(params); |
2209 | ||
2210 | if (!ret) | |
2211 | stack; | |
2212 | ||
2213 | if (ret >= 0) | |
2214 | return ret; | |
2215 | ||
2216 | log_debug("Insufficient space in params[%" PRIsize_t | |
2217 | "] for target parameters.", paramsize); | |
2218 | ||
2219 | paramsize *= 2; | |
2220 | } while (paramsize < MAX_TARGET_PARAMSIZE); | |
2221 | ||
2222 | log_error("Target parameter size too big. Aborting."); | |
2223 | return 0; | |
2224 | } | |
2225 | ||
b4f1578f | 2226 | static int _load_node(struct dm_tree_node *dnode) |
165e4a11 AK |
2227 | { |
2228 | int r = 0; | |
2229 | struct dm_task *dmt; | |
2230 | struct load_segment *seg; | |
df390f17 | 2231 | uint64_t seg_start = 0, existing_table_size; |
165e4a11 | 2232 | |
4b2cae46 AK |
2233 | log_verbose("Loading %s table (%" PRIu32 ":%" PRIu32 ")", dnode->name, |
2234 | dnode->info.major, dnode->info.minor); | |
165e4a11 AK |
2235 | |
2236 | if (!(dmt = dm_task_create(DM_DEVICE_RELOAD))) { | |
2237 | log_error("Reload dm_task creation failed for %s", dnode->name); | |
2238 | return 0; | |
2239 | } | |
2240 | ||
2241 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
2242 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
2243 | log_error("Failed to set device number for %s reload.", dnode->name); | |
2244 | goto out; | |
2245 | } | |
2246 | ||
2247 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
2248 | log_error("Failed to set read only flag for %s", dnode->name); | |
2249 | goto out; | |
2250 | } | |
2251 | ||
2252 | if (!dm_task_no_open_count(dmt)) | |
2253 | log_error("Failed to disable open_count"); | |
2254 | ||
2c44337b | 2255 | dm_list_iterate_items(seg, &dnode->props.segs) |
4b2cae46 AK |
2256 | if (!_emit_segment(dmt, dnode->info.major, dnode->info.minor, |
2257 | seg, &seg_start)) | |
b4f1578f | 2258 | goto_out; |
165e4a11 | 2259 | |
ec289b64 AK |
2260 | if (!dm_task_suppress_identical_reload(dmt)) |
2261 | log_error("Failed to suppress reload of identical tables."); | |
2262 | ||
2263 | if ((r = dm_task_run(dmt))) { | |
165e4a11 | 2264 | r = dm_task_get_info(dmt, &dnode->info); |
ec289b64 AK |
2265 | if (r && !dnode->info.inactive_table) |
2266 | log_verbose("Suppressed %s identical table reload.", | |
2267 | dnode->name); | |
bb875bb9 | 2268 | |
df390f17 | 2269 | existing_table_size = dm_task_get_existing_table_size(dmt); |
bb875bb9 | 2270 | if ((dnode->props.size_changed = |
df390f17 | 2271 | (existing_table_size == seg_start) ? 0 : 1)) { |
bb875bb9 | 2272 | log_debug("Table size changed from %" PRIu64 " to %" |
df390f17 | 2273 | PRIu64 " for %s", existing_table_size, |
bb875bb9 | 2274 | seg_start, dnode->name); |
df390f17 AK |
2275 | /* |
2276 | * Kernel usually skips size validation on zero-length devices | |
2277 | * now so no need to preload them. | |
2278 | */ | |
2279 | /* FIXME In which kernel version did this begin? */ | |
2280 | if (!existing_table_size && dnode->props.delay_resume_if_new) | |
2281 | dnode->props.size_changed = 0; | |
2282 | } | |
ec289b64 | 2283 | } |
165e4a11 AK |
2284 | |
2285 | dnode->props.segment_count = 0; | |
2286 | ||
2287 | out: | |
2288 | dm_task_destroy(dmt); | |
2289 | ||
2290 | return r; | |
165e4a11 AK |
2291 | } |
2292 | ||
b4f1578f | 2293 | int dm_tree_preload_children(struct dm_tree_node *dnode, |
bb875bb9 AK |
2294 | const char *uuid_prefix, |
2295 | size_t uuid_prefix_len) | |
165e4a11 | 2296 | { |
2ca6b865 | 2297 | int r = 1; |
165e4a11 | 2298 | void *handle = NULL; |
b4f1578f | 2299 | struct dm_tree_node *child; |
165e4a11 | 2300 | struct dm_info newinfo; |
566515c0 | 2301 | int update_devs_flag = 0; |
165e4a11 AK |
2302 | |
2303 | /* Preload children first */ | |
b4f1578f | 2304 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
165e4a11 AK |
2305 | /* Skip existing non-device-mapper devices */ |
2306 | if (!child->info.exists && child->info.major) | |
2307 | continue; | |
2308 | ||
2309 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 AK |
2310 | if (child->info.exists && |
2311 | !_uuid_prefix_matches(child->uuid, uuid_prefix, uuid_prefix_len)) | |
165e4a11 AK |
2312 | continue; |
2313 | ||
b4f1578f | 2314 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
2315 | if (!dm_tree_preload_children(child, uuid_prefix, uuid_prefix_len)) |
2316 | return_0; | |
165e4a11 | 2317 | |
165e4a11 | 2318 | /* FIXME Cope if name exists with no uuid? */ |
3d6782b3 ZK |
2319 | if (!child->info.exists && !_create_node(child)) |
2320 | return_0; | |
165e4a11 | 2321 | |
3d6782b3 ZK |
2322 | if (!child->info.inactive_table && |
2323 | child->props.segment_count && | |
2324 | !_load_node(child)) | |
2325 | return_0; | |
165e4a11 | 2326 | |
eb91c4ee MB |
2327 | /* Propagate device size change change */ |
2328 | if (child->props.size_changed) | |
2329 | dnode->props.size_changed = 1; | |
2330 | ||
bb875bb9 | 2331 | /* Resume device immediately if it has parents and its size changed */ |
3776c494 | 2332 | if (!dm_tree_node_num_children(child, 1) || !child->props.size_changed) |
165e4a11 AK |
2333 | continue; |
2334 | ||
7707ea90 AK |
2335 | if (!child->info.inactive_table && !child->info.suspended) |
2336 | continue; | |
2337 | ||
fc795d87 | 2338 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 2339 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 AK |
2340 | &newinfo, &child->dtree->cookie, child->udev_flags, |
2341 | child->info.suspended)) { | |
165e4a11 | 2342 | log_error("Unable to resume %s (%" PRIu32 |
fc795d87 | 2343 | ":%" PRIu32 ")", child->name, child->info.major, |
165e4a11 | 2344 | child->info.minor); |
2ca6b865 | 2345 | r = 0; |
165e4a11 AK |
2346 | continue; |
2347 | } | |
2348 | ||
2349 | /* Update cached info */ | |
2350 | child->info = newinfo; | |
bbcd37e4 ZK |
2351 | if (child->props.send_messages && |
2352 | !(r = _node_send_messages(child, uuid_prefix, uuid_prefix_len))) { | |
2353 | stack; | |
2354 | continue; | |
2355 | } | |
566515c0 PR |
2356 | /* |
2357 | * Prepare for immediate synchronization with udev and flush all stacked | |
2358 | * dev node operations if requested by immediate_dev_node property. But | |
2359 | * finish processing current level in the tree first. | |
2360 | */ | |
2361 | if (child->props.immediate_dev_node) | |
2362 | update_devs_flag = 1; | |
165e4a11 AK |
2363 | } |
2364 | ||
bbcd37e4 ZK |
2365 | if (r && dnode->props.send_messages && |
2366 | !(r = _node_send_messages(dnode, uuid_prefix, uuid_prefix_len))) | |
2367 | stack; | |
165e4a11 | 2368 | |
566515c0 PR |
2369 | if (update_devs_flag) { |
2370 | if (!dm_udev_wait(dm_tree_get_cookie(dnode))) | |
2371 | stack; | |
2372 | dm_tree_set_cookie(dnode, 0); | |
566515c0 PR |
2373 | } |
2374 | ||
11f64f0a | 2375 | if (r && !_node_send_messages(dnode, uuid_prefix, uuid_prefix_len)) { |
25e6ab87 ZK |
2376 | stack; |
2377 | if (!(dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len))) | |
2378 | log_error("Failed to deactivate %s", dnode->name); | |
2379 | r = 0; | |
2380 | } | |
2381 | ||
2ca6b865 | 2382 | return r; |
165e4a11 AK |
2383 | } |
2384 | ||
165e4a11 AK |
2385 | /* |
2386 | * Returns 1 if unsure. | |
2387 | */ | |
b4f1578f | 2388 | int dm_tree_children_use_uuid(struct dm_tree_node *dnode, |
165e4a11 AK |
2389 | const char *uuid_prefix, |
2390 | size_t uuid_prefix_len) | |
2391 | { | |
2392 | void *handle = NULL; | |
b4f1578f | 2393 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
2394 | const char *uuid; |
2395 | ||
b4f1578f AK |
2396 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
2397 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
2398 | log_error("Failed to get uuid for dtree node."); | |
165e4a11 AK |
2399 | return 1; |
2400 | } | |
2401 | ||
87f98002 | 2402 | if (_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
165e4a11 AK |
2403 | return 1; |
2404 | ||
b4f1578f AK |
2405 | if (dm_tree_node_num_children(child, 0)) |
2406 | dm_tree_children_use_uuid(child, uuid_prefix, uuid_prefix_len); | |
165e4a11 AK |
2407 | } |
2408 | ||
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | /* | |
2413 | * Target functions | |
2414 | */ | |
b4f1578f | 2415 | static struct load_segment *_add_segment(struct dm_tree_node *dnode, unsigned type, uint64_t size) |
165e4a11 AK |
2416 | { |
2417 | struct load_segment *seg; | |
2418 | ||
b4f1578f AK |
2419 | if (!(seg = dm_pool_zalloc(dnode->dtree->mem, sizeof(*seg)))) { |
2420 | log_error("dtree node segment allocation failed"); | |
165e4a11 AK |
2421 | return NULL; |
2422 | } | |
2423 | ||
2424 | seg->type = type; | |
2425 | seg->size = size; | |
2426 | seg->area_count = 0; | |
2c44337b | 2427 | dm_list_init(&seg->areas); |
165e4a11 AK |
2428 | seg->stripe_size = 0; |
2429 | seg->persistent = 0; | |
2430 | seg->chunk_size = 0; | |
2431 | seg->cow = NULL; | |
2432 | seg->origin = NULL; | |
aa6f4e51 | 2433 | seg->merge = NULL; |
165e4a11 | 2434 | |
2c44337b | 2435 | dm_list_add(&dnode->props.segs, &seg->list); |
165e4a11 AK |
2436 | dnode->props.segment_count++; |
2437 | ||
2438 | return seg; | |
2439 | } | |
2440 | ||
b4f1578f | 2441 | int dm_tree_node_add_snapshot_origin_target(struct dm_tree_node *dnode, |
40e5fd8b AK |
2442 | uint64_t size, |
2443 | const char *origin_uuid) | |
165e4a11 AK |
2444 | { |
2445 | struct load_segment *seg; | |
b4f1578f | 2446 | struct dm_tree_node *origin_node; |
165e4a11 | 2447 | |
b4f1578f AK |
2448 | if (!(seg = _add_segment(dnode, SEG_SNAPSHOT_ORIGIN, size))) |
2449 | return_0; | |
165e4a11 | 2450 | |
b4f1578f | 2451 | if (!(origin_node = dm_tree_find_node_by_uuid(dnode->dtree, origin_uuid))) { |
165e4a11 AK |
2452 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2453 | return 0; | |
2454 | } | |
2455 | ||
2456 | seg->origin = origin_node; | |
b4f1578f AK |
2457 | if (!_link_tree_nodes(dnode, origin_node)) |
2458 | return_0; | |
165e4a11 | 2459 | |
56c28292 AK |
2460 | /* Resume snapshot origins after new snapshots */ |
2461 | dnode->activation_priority = 1; | |
2462 | ||
165e4a11 AK |
2463 | return 1; |
2464 | } | |
2465 | ||
aa6f4e51 MS |
2466 | static int _add_snapshot_target(struct dm_tree_node *node, |
2467 | uint64_t size, | |
2468 | const char *origin_uuid, | |
2469 | const char *cow_uuid, | |
2470 | const char *merge_uuid, | |
2471 | int persistent, | |
2472 | uint32_t chunk_size) | |
165e4a11 AK |
2473 | { |
2474 | struct load_segment *seg; | |
aa6f4e51 MS |
2475 | struct dm_tree_node *origin_node, *cow_node, *merge_node; |
2476 | unsigned seg_type; | |
2477 | ||
2478 | seg_type = !merge_uuid ? SEG_SNAPSHOT : SEG_SNAPSHOT_MERGE; | |
165e4a11 | 2479 | |
aa6f4e51 | 2480 | if (!(seg = _add_segment(node, seg_type, size))) |
b4f1578f | 2481 | return_0; |
165e4a11 | 2482 | |
b4f1578f | 2483 | if (!(origin_node = dm_tree_find_node_by_uuid(node->dtree, origin_uuid))) { |
165e4a11 AK |
2484 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2485 | return 0; | |
2486 | } | |
2487 | ||
2488 | seg->origin = origin_node; | |
b4f1578f AK |
2489 | if (!_link_tree_nodes(node, origin_node)) |
2490 | return_0; | |
165e4a11 | 2491 | |
b4f1578f | 2492 | if (!(cow_node = dm_tree_find_node_by_uuid(node->dtree, cow_uuid))) { |
aa6f4e51 | 2493 | log_error("Couldn't find snapshot COW device uuid %s.", cow_uuid); |
165e4a11 AK |
2494 | return 0; |
2495 | } | |
2496 | ||
2497 | seg->cow = cow_node; | |
b4f1578f AK |
2498 | if (!_link_tree_nodes(node, cow_node)) |
2499 | return_0; | |
165e4a11 AK |
2500 | |
2501 | seg->persistent = persistent ? 1 : 0; | |
2502 | seg->chunk_size = chunk_size; | |
2503 | ||
aa6f4e51 MS |
2504 | if (merge_uuid) { |
2505 | if (!(merge_node = dm_tree_find_node_by_uuid(node->dtree, merge_uuid))) { | |
2506 | /* not a pure error, merging snapshot may have been deactivated */ | |
2507 | log_verbose("Couldn't find merging snapshot uuid %s.", merge_uuid); | |
2508 | } else { | |
2509 | seg->merge = merge_node; | |
2510 | /* must not link merging snapshot, would undermine activation_priority below */ | |
2511 | } | |
2512 | ||
2513 | /* Resume snapshot-merge (acting origin) after other snapshots */ | |
2514 | node->activation_priority = 1; | |
2515 | if (seg->merge) { | |
2516 | /* Resume merging snapshot after snapshot-merge */ | |
2517 | seg->merge->activation_priority = 2; | |
2518 | } | |
2519 | } | |
2520 | ||
165e4a11 AK |
2521 | return 1; |
2522 | } | |
2523 | ||
aa6f4e51 MS |
2524 | |
2525 | int dm_tree_node_add_snapshot_target(struct dm_tree_node *node, | |
2526 | uint64_t size, | |
2527 | const char *origin_uuid, | |
2528 | const char *cow_uuid, | |
2529 | int persistent, | |
2530 | uint32_t chunk_size) | |
2531 | { | |
2532 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2533 | NULL, persistent, chunk_size); | |
2534 | } | |
2535 | ||
2536 | int dm_tree_node_add_snapshot_merge_target(struct dm_tree_node *node, | |
2537 | uint64_t size, | |
2538 | const char *origin_uuid, | |
2539 | const char *cow_uuid, | |
2540 | const char *merge_uuid, | |
2541 | uint32_t chunk_size) | |
2542 | { | |
2543 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2544 | merge_uuid, 1, chunk_size); | |
2545 | } | |
2546 | ||
b4f1578f | 2547 | int dm_tree_node_add_error_target(struct dm_tree_node *node, |
40e5fd8b | 2548 | uint64_t size) |
165e4a11 | 2549 | { |
b4f1578f AK |
2550 | if (!_add_segment(node, SEG_ERROR, size)) |
2551 | return_0; | |
165e4a11 AK |
2552 | |
2553 | return 1; | |
2554 | } | |
2555 | ||
b4f1578f | 2556 | int dm_tree_node_add_zero_target(struct dm_tree_node *node, |
40e5fd8b | 2557 | uint64_t size) |
165e4a11 | 2558 | { |
b4f1578f AK |
2559 | if (!_add_segment(node, SEG_ZERO, size)) |
2560 | return_0; | |
165e4a11 AK |
2561 | |
2562 | return 1; | |
2563 | } | |
2564 | ||
b4f1578f | 2565 | int dm_tree_node_add_linear_target(struct dm_tree_node *node, |
40e5fd8b | 2566 | uint64_t size) |
165e4a11 | 2567 | { |
b4f1578f AK |
2568 | if (!_add_segment(node, SEG_LINEAR, size)) |
2569 | return_0; | |
165e4a11 AK |
2570 | |
2571 | return 1; | |
2572 | } | |
2573 | ||
b4f1578f | 2574 | int dm_tree_node_add_striped_target(struct dm_tree_node *node, |
40e5fd8b AK |
2575 | uint64_t size, |
2576 | uint32_t stripe_size) | |
165e4a11 AK |
2577 | { |
2578 | struct load_segment *seg; | |
2579 | ||
b4f1578f AK |
2580 | if (!(seg = _add_segment(node, SEG_STRIPED, size))) |
2581 | return_0; | |
165e4a11 AK |
2582 | |
2583 | seg->stripe_size = stripe_size; | |
2584 | ||
2585 | return 1; | |
2586 | } | |
2587 | ||
12ca060e MB |
2588 | int dm_tree_node_add_crypt_target(struct dm_tree_node *node, |
2589 | uint64_t size, | |
2590 | const char *cipher, | |
2591 | const char *chainmode, | |
2592 | const char *iv, | |
2593 | uint64_t iv_offset, | |
2594 | const char *key) | |
2595 | { | |
2596 | struct load_segment *seg; | |
2597 | ||
2598 | if (!(seg = _add_segment(node, SEG_CRYPT, size))) | |
2599 | return_0; | |
2600 | ||
2601 | seg->cipher = cipher; | |
2602 | seg->chainmode = chainmode; | |
2603 | seg->iv = iv; | |
2604 | seg->iv_offset = iv_offset; | |
2605 | seg->key = key; | |
2606 | ||
2607 | return 1; | |
2608 | } | |
2609 | ||
b4f1578f | 2610 | int dm_tree_node_add_mirror_target_log(struct dm_tree_node *node, |
165e4a11 | 2611 | uint32_t region_size, |
08e64ce5 | 2612 | unsigned clustered, |
165e4a11 | 2613 | const char *log_uuid, |
ce7ed2c0 AK |
2614 | unsigned area_count, |
2615 | uint32_t flags) | |
165e4a11 | 2616 | { |
908db078 | 2617 | struct dm_tree_node *log_node = NULL; |
165e4a11 AK |
2618 | struct load_segment *seg; |
2619 | ||
2620 | if (!node->props.segment_count) { | |
b8175c33 | 2621 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
2622 | return 0; |
2623 | } | |
2624 | ||
2c44337b | 2625 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 2626 | |
24b026e3 | 2627 | if (log_uuid) { |
67b25ed4 AK |
2628 | if (!(seg->uuid = dm_pool_strdup(node->dtree->mem, log_uuid))) { |
2629 | log_error("log uuid pool_strdup failed"); | |
2630 | return 0; | |
2631 | } | |
df390f17 AK |
2632 | if ((flags & DM_CORELOG)) |
2633 | /* For pvmove: immediate resume (for size validation) isn't needed. */ | |
2634 | node->props.delay_resume_if_new = 1; | |
2635 | else { | |
9723090c AK |
2636 | if (!(log_node = dm_tree_find_node_by_uuid(node->dtree, log_uuid))) { |
2637 | log_error("Couldn't find mirror log uuid %s.", log_uuid); | |
2638 | return 0; | |
2639 | } | |
2640 | ||
566515c0 PR |
2641 | if (clustered) |
2642 | log_node->props.immediate_dev_node = 1; | |
2643 | ||
0a99713e AK |
2644 | /* The kernel validates the size of disk logs. */ |
2645 | /* FIXME Propagate to any devices below */ | |
2646 | log_node->props.delay_resume_if_new = 0; | |
2647 | ||
9723090c AK |
2648 | if (!_link_tree_nodes(node, log_node)) |
2649 | return_0; | |
2650 | } | |
165e4a11 AK |
2651 | } |
2652 | ||
2653 | seg->log = log_node; | |
165e4a11 AK |
2654 | seg->region_size = region_size; |
2655 | seg->clustered = clustered; | |
2656 | seg->mirror_area_count = area_count; | |
dbcb64b8 | 2657 | seg->flags = flags; |
165e4a11 AK |
2658 | |
2659 | return 1; | |
2660 | } | |
2661 | ||
b4f1578f | 2662 | int dm_tree_node_add_mirror_target(struct dm_tree_node *node, |
40e5fd8b | 2663 | uint64_t size) |
165e4a11 | 2664 | { |
cbecd3cd | 2665 | if (!_add_segment(node, SEG_MIRRORED, size)) |
b4f1578f | 2666 | return_0; |
165e4a11 AK |
2667 | |
2668 | return 1; | |
2669 | } | |
2670 | ||
cac52ca4 JEB |
2671 | int dm_tree_node_add_raid_target(struct dm_tree_node *node, |
2672 | uint64_t size, | |
2673 | const char *raid_type, | |
2674 | uint32_t region_size, | |
2675 | uint32_t stripe_size, | |
f439e65b | 2676 | uint64_t rebuilds, |
cac52ca4 JEB |
2677 | uint64_t reserved2) |
2678 | { | |
2679 | int i; | |
2680 | struct load_segment *seg = NULL; | |
2681 | ||
2682 | for (i = 0; dm_segtypes[i].target && !seg; i++) | |
2683 | if (!strcmp(raid_type, dm_segtypes[i].target)) | |
2684 | if (!(seg = _add_segment(node, | |
2685 | dm_segtypes[i].type, size))) | |
2686 | return_0; | |
2687 | ||
b2fa9b43 JEB |
2688 | if (!seg) |
2689 | return_0; | |
2690 | ||
cac52ca4 JEB |
2691 | seg->region_size = region_size; |
2692 | seg->stripe_size = stripe_size; | |
2693 | seg->area_count = 0; | |
f439e65b | 2694 | seg->rebuilds = rebuilds; |
cac52ca4 JEB |
2695 | |
2696 | return 1; | |
2697 | } | |
2698 | ||
b262f3e1 ZK |
2699 | int dm_tree_node_add_replicator_target(struct dm_tree_node *node, |
2700 | uint64_t size, | |
2701 | const char *rlog_uuid, | |
2702 | const char *rlog_type, | |
2703 | unsigned rsite_index, | |
2704 | dm_replicator_mode_t mode, | |
2705 | uint32_t async_timeout, | |
2706 | uint64_t fall_behind_data, | |
2707 | uint32_t fall_behind_ios) | |
2708 | { | |
2709 | struct load_segment *rseg; | |
2710 | struct replicator_site *rsite; | |
2711 | ||
2712 | /* Local site0 - adds replicator segment and links rlog device */ | |
2713 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2714 | if (node->props.segment_count) { | |
2715 | log_error(INTERNAL_ERROR "Attempt to add replicator segment to already used node."); | |
2716 | return 0; | |
2717 | } | |
2718 | ||
2719 | if (!(rseg = _add_segment(node, SEG_REPLICATOR, size))) | |
2720 | return_0; | |
2721 | ||
2722 | if (!(rseg->log = dm_tree_find_node_by_uuid(node->dtree, rlog_uuid))) { | |
2723 | log_error("Missing replicator log uuid %s.", rlog_uuid); | |
2724 | return 0; | |
2725 | } | |
2726 | ||
2727 | if (!_link_tree_nodes(node, rseg->log)) | |
2728 | return_0; | |
2729 | ||
2730 | if (strcmp(rlog_type, "ringbuffer") != 0) { | |
2731 | log_error("Unsupported replicator log type %s.", rlog_type); | |
2732 | return 0; | |
2733 | } | |
2734 | ||
2735 | if (!(rseg->rlog_type = dm_pool_strdup(node->dtree->mem, rlog_type))) | |
2736 | return_0; | |
2737 | ||
2738 | dm_list_init(&rseg->rsites); | |
2739 | rseg->rdevice_count = 0; | |
2740 | node->activation_priority = 1; | |
2741 | } | |
2742 | ||
2743 | /* Add site to segment */ | |
2744 | if (mode == DM_REPLICATOR_SYNC | |
2745 | && (async_timeout || fall_behind_ios || fall_behind_data)) { | |
2746 | log_error("Async parameters passed for synchronnous replicator."); | |
2747 | return 0; | |
2748 | } | |
2749 | ||
2750 | if (node->props.segment_count != 1) { | |
2751 | log_error(INTERNAL_ERROR "Attempt to add remote site area before setting replicator log."); | |
2752 | return 0; | |
2753 | } | |
2754 | ||
2755 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2756 | if (rseg->type != SEG_REPLICATOR) { | |
2757 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2758 | dm_segtypes[rseg->type].target); | |
2759 | return 0; | |
2760 | } | |
2761 | ||
2762 | if (!(rsite = dm_pool_zalloc(node->dtree->mem, sizeof(*rsite)))) { | |
2763 | log_error("Failed to allocate remote site segment."); | |
2764 | return 0; | |
2765 | } | |
2766 | ||
2767 | dm_list_add(&rseg->rsites, &rsite->list); | |
2768 | rseg->rsite_count++; | |
2769 | ||
2770 | rsite->mode = mode; | |
2771 | rsite->async_timeout = async_timeout; | |
2772 | rsite->fall_behind_data = fall_behind_data; | |
2773 | rsite->fall_behind_ios = fall_behind_ios; | |
2774 | rsite->rsite_index = rsite_index; | |
2775 | ||
2776 | return 1; | |
2777 | } | |
2778 | ||
2779 | /* Appends device node to Replicator */ | |
2780 | int dm_tree_node_add_replicator_dev_target(struct dm_tree_node *node, | |
2781 | uint64_t size, | |
2782 | const char *replicator_uuid, | |
2783 | uint64_t rdevice_index, | |
2784 | const char *rdev_uuid, | |
2785 | unsigned rsite_index, | |
2786 | const char *slog_uuid, | |
2787 | uint32_t slog_flags, | |
2788 | uint32_t slog_region_size) | |
2789 | { | |
2790 | struct seg_area *area; | |
2791 | struct load_segment *rseg; | |
2792 | struct load_segment *rep_seg; | |
2793 | ||
2794 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2795 | /* Site index for local target */ | |
2796 | if (!(rseg = _add_segment(node, SEG_REPLICATOR_DEV, size))) | |
2797 | return_0; | |
2798 | ||
2799 | if (!(rseg->replicator = dm_tree_find_node_by_uuid(node->dtree, replicator_uuid))) { | |
2800 | log_error("Missing replicator uuid %s.", replicator_uuid); | |
2801 | return 0; | |
2802 | } | |
2803 | ||
2804 | /* Local slink0 for replicator must be always initialized first */ | |
2805 | if (rseg->replicator->props.segment_count != 1) { | |
2806 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment."); | |
2807 | return 0; | |
2808 | } | |
2809 | ||
2810 | rep_seg = dm_list_item(dm_list_last(&rseg->replicator->props.segs), struct load_segment); | |
2811 | if (rep_seg->type != SEG_REPLICATOR) { | |
2812 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2813 | dm_segtypes[rep_seg->type].target); | |
2814 | return 0; | |
2815 | } | |
2816 | rep_seg->rdevice_count++; | |
2817 | ||
2818 | if (!_link_tree_nodes(node, rseg->replicator)) | |
2819 | return_0; | |
2820 | ||
2821 | rseg->rdevice_index = rdevice_index; | |
2822 | } else { | |
2823 | /* Local slink0 for replicator must be always initialized first */ | |
2824 | if (node->props.segment_count != 1) { | |
2825 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment."); | |
2826 | return 0; | |
2827 | } | |
2828 | ||
2829 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2830 | if (rseg->type != SEG_REPLICATOR_DEV) { | |
2831 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment %s.", | |
2832 | dm_segtypes[rseg->type].target); | |
2833 | return 0; | |
2834 | } | |
2835 | } | |
2836 | ||
2837 | if (!(slog_flags & DM_CORELOG) && !slog_uuid) { | |
2838 | log_error("Unspecified sync log uuid."); | |
2839 | return 0; | |
2840 | } | |
2841 | ||
2842 | if (!dm_tree_node_add_target_area(node, NULL, rdev_uuid, 0)) | |
2843 | return_0; | |
2844 | ||
2845 | area = dm_list_item(dm_list_last(&rseg->areas), struct seg_area); | |
2846 | ||
2847 | if (!(slog_flags & DM_CORELOG)) { | |
2848 | if (!(area->slog = dm_tree_find_node_by_uuid(node->dtree, slog_uuid))) { | |
2849 | log_error("Couldn't find sync log uuid %s.", slog_uuid); | |
2850 | return 0; | |
2851 | } | |
2852 | ||
2853 | if (!_link_tree_nodes(node, area->slog)) | |
2854 | return_0; | |
2855 | } | |
2856 | ||
2857 | area->flags = slog_flags; | |
2858 | area->region_size = slog_region_size; | |
2859 | area->rsite_index = rsite_index; | |
2860 | ||
2861 | return 1; | |
2862 | } | |
2863 | ||
5668fe04 ZK |
2864 | static int _thin_validate_device_id(uint32_t device_id) |
2865 | { | |
2866 | if (device_id > DM_THIN_MAX_DEVICE_ID) { | |
2867 | log_error("Device id %u is higher then %u.", | |
2868 | device_id, DM_THIN_MAX_DEVICE_ID); | |
2869 | return 0; | |
2870 | } | |
2871 | ||
2872 | return 1; | |
2873 | } | |
2874 | ||
4251236e ZK |
2875 | int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node, |
2876 | uint64_t size, | |
e0ea24be | 2877 | uint64_t transaction_id, |
4251236e | 2878 | const char *metadata_uuid, |
5668fd6a | 2879 | const char *pool_uuid, |
4251236e | 2880 | uint32_t data_block_size, |
e9156c2b | 2881 | uint64_t low_water_mark, |
460c5991 | 2882 | unsigned skip_block_zeroing) |
4251236e ZK |
2883 | { |
2884 | struct load_segment *seg; | |
2885 | ||
3f53c059 | 2886 | if (data_block_size < DM_THIN_MIN_DATA_BLOCK_SIZE) { |
565a4bfc | 2887 | log_error("Data block size %u is lower then %u sectors.", |
3f53c059 | 2888 | data_block_size, DM_THIN_MIN_DATA_BLOCK_SIZE); |
4251236e ZK |
2889 | return 0; |
2890 | } | |
2891 | ||
3f53c059 | 2892 | if (data_block_size > DM_THIN_MAX_DATA_BLOCK_SIZE) { |
565a4bfc | 2893 | log_error("Data block size %u is higher then %u sectors.", |
3f53c059 | 2894 | data_block_size, DM_THIN_MAX_DATA_BLOCK_SIZE); |
4251236e ZK |
2895 | return 0; |
2896 | } | |
2897 | ||
2898 | if (!(seg = _add_segment(node, SEG_THIN_POOL, size))) | |
2899 | return_0; | |
2900 | ||
2901 | if (!(seg->metadata = dm_tree_find_node_by_uuid(node->dtree, metadata_uuid))) { | |
2902 | log_error("Missing metadata uuid %s.", metadata_uuid); | |
2903 | return 0; | |
2904 | } | |
2905 | ||
2906 | if (!_link_tree_nodes(node, seg->metadata)) | |
2907 | return_0; | |
2908 | ||
2909 | if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) { | |
2910 | log_error("Missing pool uuid %s.", pool_uuid); | |
2911 | return 0; | |
2912 | } | |
2913 | ||
2914 | if (!_link_tree_nodes(node, seg->pool)) | |
2915 | return_0; | |
2916 | ||
bbcd37e4 ZK |
2917 | node->props.send_messages = 1; |
2918 | seg->transaction_id = transaction_id; | |
e9156c2b | 2919 | seg->low_water_mark = low_water_mark; |
e0ea24be | 2920 | seg->data_block_size = data_block_size; |
460c5991 | 2921 | seg->skip_block_zeroing = skip_block_zeroing; |
25e6ab87 ZK |
2922 | dm_list_init(&seg->thin_messages); |
2923 | ||
2924 | return 1; | |
2925 | } | |
2926 | ||
2927 | int dm_tree_node_add_thin_pool_message(struct dm_tree_node *node, | |
2e732e96 ZK |
2928 | dm_thin_message_t type, |
2929 | uint64_t id1, uint64_t id2) | |
25e6ab87 ZK |
2930 | { |
2931 | struct load_segment *seg; | |
2932 | struct thin_message *tm; | |
2933 | ||
2934 | if (node->props.segment_count != 1) { | |
759b9592 | 2935 | log_error("Thin pool node must have only one segment."); |
25e6ab87 ZK |
2936 | return 0; |
2937 | } | |
2938 | ||
2939 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
25e6ab87 | 2940 | if (seg->type != SEG_THIN_POOL) { |
759b9592 | 2941 | log_error("Thin pool node has segment type %s.", |
25e6ab87 ZK |
2942 | dm_segtypes[seg->type].target); |
2943 | return 0; | |
2944 | } | |
2945 | ||
2946 | if (!(tm = dm_pool_zalloc(node->dtree->mem, sizeof (*tm)))) { | |
2947 | log_error("Failed to allocate thin message."); | |
2948 | return 0; | |
2949 | } | |
2950 | ||
2e732e96 | 2951 | switch (type) { |
25e6ab87 | 2952 | case DM_THIN_MESSAGE_CREATE_SNAP: |
759b9592 | 2953 | /* If the thin origin is active, it must be suspend first! */ |
2e732e96 | 2954 | if (id1 == id2) { |
759b9592 | 2955 | log_error("Cannot use same device id for origin and its snapshot."); |
25e6ab87 ZK |
2956 | return 0; |
2957 | } | |
2e732e96 ZK |
2958 | if (!_thin_validate_device_id(id1) || |
2959 | !_thin_validate_device_id(id2)) | |
25e6ab87 | 2960 | return_0; |
2e732e96 ZK |
2961 | tm->message.u.m_create_snap.device_id = id1; |
2962 | tm->message.u.m_create_snap.origin_id = id2; | |
25e6ab87 ZK |
2963 | break; |
2964 | case DM_THIN_MESSAGE_CREATE_THIN: | |
2e732e96 | 2965 | if (!_thin_validate_device_id(id1)) |
25e6ab87 | 2966 | return_0; |
2e732e96 | 2967 | tm->message.u.m_create_thin.device_id = id1; |
660a42bc | 2968 | tm->expected_errno = EEXIST; |
25e6ab87 ZK |
2969 | break; |
2970 | case DM_THIN_MESSAGE_DELETE: | |
2e732e96 | 2971 | if (!_thin_validate_device_id(id1)) |
25e6ab87 | 2972 | return_0; |
2e732e96 | 2973 | tm->message.u.m_delete.device_id = id1; |
660a42bc | 2974 | tm->expected_errno = ENODATA; |
25e6ab87 ZK |
2975 | break; |
2976 | case DM_THIN_MESSAGE_TRIM: | |
2e732e96 | 2977 | if (!_thin_validate_device_id(id1)) |
25e6ab87 | 2978 | return_0; |
2e732e96 ZK |
2979 | tm->message.u.m_trim.device_id = id1; |
2980 | tm->message.u.m_trim.new_size = id2; | |
25e6ab87 ZK |
2981 | break; |
2982 | case DM_THIN_MESSAGE_SET_TRANSACTION_ID: | |
2e732e96 ZK |
2983 | if ((id1 + 1) != id2) { |
2984 | log_error("New transaction id must be sequential."); | |
2985 | return 0; /* FIXME: Maybe too strict here? */ | |
2986 | } | |
2987 | if (id1 != seg->transaction_id) { | |
2988 | log_error("Current transaction id is different from thin pool."); | |
25e6ab87 ZK |
2989 | return 0; /* FIXME: Maybe too strict here? */ |
2990 | } | |
2e732e96 ZK |
2991 | tm->message.u.m_set_transaction_id.current_id = id1; |
2992 | tm->message.u.m_set_transaction_id.new_id = id2; | |
25e6ab87 ZK |
2993 | break; |
2994 | default: | |
2e732e96 | 2995 | log_error("Unsupported message type %d.", (int) type); |
25e6ab87 ZK |
2996 | return 0; |
2997 | } | |
2998 | ||
2e732e96 | 2999 | tm->message.type = type; |
25e6ab87 | 3000 | dm_list_add(&seg->thin_messages, &tm->list); |
4251236e ZK |
3001 | |
3002 | return 1; | |
3003 | } | |
3004 | ||
3005 | int dm_tree_node_add_thin_target(struct dm_tree_node *node, | |
3006 | uint64_t size, | |
4d25c81b | 3007 | const char *pool_uuid, |
4251236e ZK |
3008 | uint32_t device_id) |
3009 | { | |
4d25c81b | 3010 | struct dm_tree_node *pool; |
4251236e ZK |
3011 | struct load_segment *seg; |
3012 | ||
4d25c81b ZK |
3013 | if (!(pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) { |
3014 | log_error("Missing thin pool uuid %s.", pool_uuid); | |
4251236e ZK |
3015 | return 0; |
3016 | } | |
3017 | ||
4d25c81b | 3018 | if (!_link_tree_nodes(node, pool)) |
4251236e ZK |
3019 | return_0; |
3020 | ||
4d25c81b ZK |
3021 | if (device_id == DM_THIN_ERROR_DEVICE_ID) { |
3022 | if (!dm_tree_node_add_error_target(node, size)) | |
3023 | return_0; | |
3024 | } else { | |
3025 | if (!_thin_validate_device_id(device_id)) | |
3026 | return_0; | |
3027 | ||
3028 | if (!(seg = _add_segment(node, SEG_THIN, size))) | |
3029 | return_0; | |
3030 | ||
3031 | seg->pool = pool; | |
3032 | seg->device_id = device_id; | |
3033 | } | |
1419bf1c | 3034 | |
4251236e ZK |
3035 | return 1; |
3036 | } | |
3037 | ||
b4f1578f | 3038 | static int _add_area(struct dm_tree_node *node, struct load_segment *seg, struct dm_tree_node *dev_node, uint64_t offset) |
165e4a11 AK |
3039 | { |
3040 | struct seg_area *area; | |
3041 | ||
b4f1578f | 3042 | if (!(area = dm_pool_zalloc(node->dtree->mem, sizeof (*area)))) { |
165e4a11 AK |
3043 | log_error("Failed to allocate target segment area."); |
3044 | return 0; | |
3045 | } | |
3046 | ||
3047 | area->dev_node = dev_node; | |
3048 | area->offset = offset; | |
3049 | ||
2c44337b | 3050 | dm_list_add(&seg->areas, &area->list); |
165e4a11 AK |
3051 | seg->area_count++; |
3052 | ||
3053 | return 1; | |
3054 | } | |
3055 | ||
b4f1578f | 3056 | int dm_tree_node_add_target_area(struct dm_tree_node *node, |
40e5fd8b AK |
3057 | const char *dev_name, |
3058 | const char *uuid, | |
3059 | uint64_t offset) | |
165e4a11 AK |
3060 | { |
3061 | struct load_segment *seg; | |
3062 | struct stat info; | |
b4f1578f | 3063 | struct dm_tree_node *dev_node; |
165e4a11 AK |
3064 | |
3065 | if ((!dev_name || !*dev_name) && (!uuid || !*uuid)) { | |
b4f1578f | 3066 | log_error("dm_tree_node_add_target_area called without device"); |
165e4a11 AK |
3067 | return 0; |
3068 | } | |
3069 | ||
3070 | if (uuid) { | |
b4f1578f | 3071 | if (!(dev_node = dm_tree_find_node_by_uuid(node->dtree, uuid))) { |
165e4a11 AK |
3072 | log_error("Couldn't find area uuid %s.", uuid); |
3073 | return 0; | |
3074 | } | |
b4f1578f AK |
3075 | if (!_link_tree_nodes(node, dev_node)) |
3076 | return_0; | |
165e4a11 | 3077 | } else { |
6d04311e | 3078 | if (stat(dev_name, &info) < 0) { |
165e4a11 AK |
3079 | log_error("Device %s not found.", dev_name); |
3080 | return 0; | |
3081 | } | |
3082 | ||
40e5fd8b | 3083 | if (!S_ISBLK(info.st_mode)) { |
165e4a11 AK |
3084 | log_error("Device %s is not a block device.", dev_name); |
3085 | return 0; | |
3086 | } | |
3087 | ||
3088 | /* FIXME Check correct macro use */ | |
cda69e17 PR |
3089 | if (!(dev_node = _add_dev(node->dtree, node, MAJOR(info.st_rdev), |
3090 | MINOR(info.st_rdev), 0))) | |
b4f1578f | 3091 | return_0; |
165e4a11 AK |
3092 | } |
3093 | ||
3094 | if (!node->props.segment_count) { | |
b8175c33 | 3095 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
3096 | return 0; |
3097 | } | |
3098 | ||
2c44337b | 3099 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 3100 | |
b4f1578f AK |
3101 | if (!_add_area(node, seg, dev_node, offset)) |
3102 | return_0; | |
165e4a11 AK |
3103 | |
3104 | return 1; | |
db208f51 | 3105 | } |
bd90c6b2 | 3106 | |
6d04311e JEB |
3107 | int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset) |
3108 | { | |
3109 | struct load_segment *seg; | |
3110 | ||
3111 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
3112 | ||
415c0690 AK |
3113 | switch (seg->type) { |
3114 | case SEG_RAID1: | |
3115 | case SEG_RAID4: | |
3116 | case SEG_RAID5_LA: | |
3117 | case SEG_RAID5_RA: | |
3118 | case SEG_RAID5_LS: | |
3119 | case SEG_RAID5_RS: | |
3120 | case SEG_RAID6_ZR: | |
3121 | case SEG_RAID6_NR: | |
3122 | case SEG_RAID6_NC: | |
3123 | break; | |
3124 | default: | |
3125 | log_error("dm_tree_node_add_null_area() called on an unsupported segment type"); | |
3126 | return 0; | |
3127 | } | |
3128 | ||
6d04311e JEB |
3129 | if (!_add_area(node, seg, NULL, offset)) |
3130 | return_0; | |
3131 | ||
3132 | return 1; | |
3133 | } | |
3134 | ||
bd90c6b2 AK |
3135 | void dm_tree_set_cookie(struct dm_tree_node *node, uint32_t cookie) |
3136 | { | |
3137 | node->dtree->cookie = cookie; | |
3138 | } | |
3139 | ||
3140 | uint32_t dm_tree_get_cookie(struct dm_tree_node *node) | |
3141 | { | |
3142 | return node->dtree->cookie; | |
3143 | } |