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Commit | Line | Data |
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3d0480ed | 1 | /* |
4251236e | 2 | * Copyright (C) 2005-2011 Red Hat, Inc. All rights reserved. |
3d0480ed AK |
3 | * |
4 | * This file is part of the device-mapper userspace tools. | |
5 | * | |
6 | * This copyrighted material is made available to anyone wishing to use, | |
7 | * modify, copy, or redistribute it subject to the terms and conditions | |
8 | * of the GNU Lesser General Public License v.2.1. | |
9 | * | |
10 | * You should have received a copy of the GNU Lesser General Public License | |
11 | * along with this program; if not, write to the Free Software Foundation, | |
12 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
13 | */ | |
14 | ||
3e5b6ed2 | 15 | #include "dmlib.h" |
3d0480ed AK |
16 | #include "libdm-targets.h" |
17 | #include "libdm-common.h" | |
3d0480ed | 18 | #include "kdev_t.h" |
0782ad50 | 19 | #include "dm-ioctl.h" |
3d0480ed AK |
20 | |
21 | #include <stdarg.h> | |
22 | #include <sys/param.h> | |
8f26e18c | 23 | #include <sys/utsname.h> |
3d0480ed | 24 | |
165e4a11 AK |
25 | #define MAX_TARGET_PARAMSIZE 500000 |
26 | ||
87f98002 AK |
27 | /* FIXME Fix interface so this is used only by LVM */ |
28 | #define UUID_PREFIX "LVM-" | |
29 | ||
b262f3e1 ZK |
30 | #define REPLICATOR_LOCAL_SITE 0 |
31 | ||
165e4a11 AK |
32 | /* Supported segment types */ |
33 | enum { | |
12ca060e MB |
34 | SEG_CRYPT, |
35 | SEG_ERROR, | |
165e4a11 AK |
36 | SEG_LINEAR, |
37 | SEG_MIRRORED, | |
b262f3e1 ZK |
38 | SEG_REPLICATOR, |
39 | SEG_REPLICATOR_DEV, | |
165e4a11 AK |
40 | SEG_SNAPSHOT, |
41 | SEG_SNAPSHOT_ORIGIN, | |
aa6f4e51 | 42 | SEG_SNAPSHOT_MERGE, |
165e4a11 AK |
43 | SEG_STRIPED, |
44 | SEG_ZERO, | |
4251236e ZK |
45 | SEG_THIN_POOL, |
46 | SEG_THIN, | |
cac52ca4 JEB |
47 | SEG_RAID1, |
48 | SEG_RAID4, | |
49 | SEG_RAID5_LA, | |
50 | SEG_RAID5_RA, | |
51 | SEG_RAID5_LS, | |
52 | SEG_RAID5_RS, | |
53 | SEG_RAID6_ZR, | |
54 | SEG_RAID6_NR, | |
55 | SEG_RAID6_NC, | |
56 | SEG_LAST, | |
165e4a11 | 57 | }; |
b4f1578f | 58 | |
165e4a11 AK |
59 | /* FIXME Add crypt and multipath support */ |
60 | ||
61 | struct { | |
62 | unsigned type; | |
63 | const char *target; | |
64 | } dm_segtypes[] = { | |
12ca060e | 65 | { SEG_CRYPT, "crypt" }, |
165e4a11 AK |
66 | { SEG_ERROR, "error" }, |
67 | { SEG_LINEAR, "linear" }, | |
68 | { SEG_MIRRORED, "mirror" }, | |
b262f3e1 ZK |
69 | { SEG_REPLICATOR, "replicator" }, |
70 | { SEG_REPLICATOR_DEV, "replicator-dev" }, | |
165e4a11 AK |
71 | { SEG_SNAPSHOT, "snapshot" }, |
72 | { SEG_SNAPSHOT_ORIGIN, "snapshot-origin" }, | |
aa6f4e51 | 73 | { SEG_SNAPSHOT_MERGE, "snapshot-merge" }, |
165e4a11 AK |
74 | { SEG_STRIPED, "striped" }, |
75 | { SEG_ZERO, "zero"}, | |
4251236e ZK |
76 | { SEG_THIN_POOL, "thin-pool"}, |
77 | { SEG_THIN, "thin"}, | |
cac52ca4 JEB |
78 | { SEG_RAID1, "raid1"}, |
79 | { SEG_RAID4, "raid4"}, | |
80 | { SEG_RAID5_LA, "raid5_la"}, | |
81 | { SEG_RAID5_RA, "raid5_ra"}, | |
82 | { SEG_RAID5_LS, "raid5_ls"}, | |
83 | { SEG_RAID5_RS, "raid5_rs"}, | |
84 | { SEG_RAID6_ZR, "raid6_zr"}, | |
85 | { SEG_RAID6_NR, "raid6_nr"}, | |
86 | { SEG_RAID6_NC, "raid6_nc"}, | |
ee05be08 ZK |
87 | |
88 | /* | |
89 | *WARNING: Since 'raid' target overloads this 1:1 mapping table | |
90 | * for search do not add new enum elements past them! | |
91 | */ | |
cac52ca4 JEB |
92 | { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */ |
93 | { SEG_RAID6_ZR, "raid6"}, /* same as "raid6_zr" */ | |
94 | { SEG_LAST, NULL }, | |
165e4a11 AK |
95 | }; |
96 | ||
97 | /* Some segment types have a list of areas of other devices attached */ | |
98 | struct seg_area { | |
2c44337b | 99 | struct dm_list list; |
165e4a11 | 100 | |
b4f1578f | 101 | struct dm_tree_node *dev_node; |
165e4a11 AK |
102 | |
103 | uint64_t offset; | |
b262f3e1 ZK |
104 | |
105 | unsigned rsite_index; /* Replicator site index */ | |
106 | struct dm_tree_node *slog; /* Replicator sync log node */ | |
107 | uint64_t region_size; /* Replicator sync log size */ | |
108 | uint32_t flags; /* Replicator sync log flags */ | |
109 | }; | |
110 | ||
25e6ab87 ZK |
111 | struct thin_message { |
112 | struct dm_list list; | |
113 | struct dm_thin_message message; | |
660a42bc | 114 | int expected_errno; |
25e6ab87 ZK |
115 | }; |
116 | ||
b262f3e1 ZK |
117 | /* Replicator-log has a list of sites */ |
118 | /* FIXME: maybe move to seg_area too? */ | |
119 | struct replicator_site { | |
120 | struct dm_list list; | |
121 | ||
122 | unsigned rsite_index; | |
123 | dm_replicator_mode_t mode; | |
124 | uint32_t async_timeout; | |
125 | uint32_t fall_behind_ios; | |
126 | uint64_t fall_behind_data; | |
165e4a11 AK |
127 | }; |
128 | ||
129 | /* Per-segment properties */ | |
130 | struct load_segment { | |
2c44337b | 131 | struct dm_list list; |
165e4a11 AK |
132 | |
133 | unsigned type; | |
134 | ||
135 | uint64_t size; | |
136 | ||
b262f3e1 ZK |
137 | unsigned area_count; /* Linear + Striped + Mirrored + Crypt + Replicator */ |
138 | struct dm_list areas; /* Linear + Striped + Mirrored + Crypt + Replicator */ | |
165e4a11 | 139 | |
cac52ca4 | 140 | uint32_t stripe_size; /* Striped + raid */ |
165e4a11 AK |
141 | |
142 | int persistent; /* Snapshot */ | |
143 | uint32_t chunk_size; /* Snapshot */ | |
b4f1578f AK |
144 | struct dm_tree_node *cow; /* Snapshot */ |
145 | struct dm_tree_node *origin; /* Snapshot + Snapshot origin */ | |
aa6f4e51 | 146 | struct dm_tree_node *merge; /* Snapshot */ |
165e4a11 | 147 | |
b262f3e1 | 148 | struct dm_tree_node *log; /* Mirror + Replicator */ |
cac52ca4 | 149 | uint32_t region_size; /* Mirror + raid */ |
165e4a11 AK |
150 | unsigned clustered; /* Mirror */ |
151 | unsigned mirror_area_count; /* Mirror */ | |
dbcb64b8 | 152 | uint32_t flags; /* Mirror log */ |
67b25ed4 | 153 | char *uuid; /* Clustered mirror log */ |
12ca060e MB |
154 | |
155 | const char *cipher; /* Crypt */ | |
156 | const char *chainmode; /* Crypt */ | |
157 | const char *iv; /* Crypt */ | |
158 | uint64_t iv_offset; /* Crypt */ | |
159 | const char *key; /* Crypt */ | |
b262f3e1 ZK |
160 | |
161 | const char *rlog_type; /* Replicator */ | |
162 | struct dm_list rsites; /* Replicator */ | |
163 | unsigned rsite_count; /* Replicator */ | |
164 | unsigned rdevice_count; /* Replicator */ | |
165 | struct dm_tree_node *replicator;/* Replicator-dev */ | |
166 | uint64_t rdevice_index; /* Replicator-dev */ | |
f439e65b | 167 | |
40e5fd8b | 168 | uint64_t rebuilds; /* raid */ |
4251236e ZK |
169 | |
170 | struct dm_tree_node *metadata; /* Thin_pool */ | |
171 | struct dm_tree_node *pool; /* Thin_pool, Thin */ | |
25e6ab87 | 172 | struct dm_list thin_messages; /* Thin_pool */ |
bbcd37e4 | 173 | uint64_t transaction_id; /* Thin_pool */ |
e9156c2b | 174 | uint64_t low_water_mark; /* Thin_pool */ |
e0ea24be | 175 | uint32_t data_block_size; /* Thin_pool */ |
460c5991 | 176 | unsigned skip_block_zeroing; /* Thin_pool */ |
4251236e ZK |
177 | uint32_t device_id; /* Thin */ |
178 | ||
165e4a11 AK |
179 | }; |
180 | ||
181 | /* Per-device properties */ | |
182 | struct load_properties { | |
183 | int read_only; | |
184 | uint32_t major; | |
185 | uint32_t minor; | |
186 | ||
52b84409 AK |
187 | uint32_t read_ahead; |
188 | uint32_t read_ahead_flags; | |
189 | ||
165e4a11 | 190 | unsigned segment_count; |
bb875bb9 | 191 | unsigned size_changed; |
2c44337b | 192 | struct dm_list segs; |
165e4a11 AK |
193 | |
194 | const char *new_name; | |
566515c0 PR |
195 | |
196 | /* If immediate_dev_node is set to 1, try to create the dev node | |
197 | * as soon as possible (e.g. in preload stage even during traversal | |
198 | * and processing of dm tree). This will also flush all stacked dev | |
199 | * node operations, synchronizing with udev. | |
200 | */ | |
df390f17 AK |
201 | unsigned immediate_dev_node; |
202 | ||
203 | /* | |
204 | * If the device size changed from zero and this is set, | |
205 | * don't resume the device immediately, even if the device | |
206 | * has parents. This works provided the parents do not | |
207 | * validate the device size and is required by pvmove to | |
208 | * avoid starting the mirror resync operation too early. | |
209 | */ | |
210 | unsigned delay_resume_if_new; | |
bbcd37e4 ZK |
211 | |
212 | /* Send messages for this node in preload */ | |
213 | unsigned send_messages; | |
165e4a11 AK |
214 | }; |
215 | ||
216 | /* Two of these used to join two nodes with uses and used_by. */ | |
b4f1578f | 217 | struct dm_tree_link { |
2c44337b | 218 | struct dm_list list; |
b4f1578f | 219 | struct dm_tree_node *node; |
165e4a11 AK |
220 | }; |
221 | ||
b4f1578f AK |
222 | struct dm_tree_node { |
223 | struct dm_tree *dtree; | |
3d0480ed | 224 | |
40e5fd8b AK |
225 | const char *name; |
226 | const char *uuid; | |
227 | struct dm_info info; | |
3d0480ed | 228 | |
40e5fd8b AK |
229 | struct dm_list uses; /* Nodes this node uses */ |
230 | struct dm_list used_by; /* Nodes that use this node */ | |
165e4a11 | 231 | |
56c28292 AK |
232 | int activation_priority; /* 0 gets activated first */ |
233 | ||
f16aea9e PR |
234 | uint16_t udev_flags; /* Udev control flags */ |
235 | ||
165e4a11 AK |
236 | void *context; /* External supplied context */ |
237 | ||
238 | struct load_properties props; /* For creation/table (re)load */ | |
76d1aec8 ZK |
239 | |
240 | /* | |
241 | * If presuspend of child node is needed | |
242 | * Note: only direct child is allowed | |
243 | */ | |
244 | struct dm_tree_node *presuspend_node; | |
3d0480ed AK |
245 | }; |
246 | ||
b4f1578f | 247 | struct dm_tree { |
a3f6b2ce AK |
248 | struct dm_pool *mem; |
249 | struct dm_hash_table *devs; | |
165e4a11 | 250 | struct dm_hash_table *uuids; |
b4f1578f | 251 | struct dm_tree_node root; |
c55b1410 | 252 | int skip_lockfs; /* 1 skips lockfs (for non-snapshots) */ |
787200ef PR |
253 | int no_flush; /* 1 sets noflush (mirrors/multipath) */ |
254 | int retry_remove; /* 1 retries remove if not successful */ | |
bd90c6b2 | 255 | uint32_t cookie; |
3d0480ed AK |
256 | }; |
257 | ||
b4f1578f | 258 | struct dm_tree *dm_tree_create(void) |
3d0480ed | 259 | { |
0395dd22 | 260 | struct dm_pool *dmem; |
b4f1578f | 261 | struct dm_tree *dtree; |
3d0480ed | 262 | |
0395dd22 ZK |
263 | if (!(dmem = dm_pool_create("dtree", 1024)) || |
264 | !(dtree = dm_pool_zalloc(dmem, sizeof(*dtree)))) { | |
265 | log_error("Failed to allocate dtree."); | |
266 | if (dmem) | |
267 | dm_pool_destroy(dmem); | |
3d0480ed AK |
268 | return NULL; |
269 | } | |
270 | ||
b4f1578f | 271 | dtree->root.dtree = dtree; |
2c44337b AK |
272 | dm_list_init(&dtree->root.uses); |
273 | dm_list_init(&dtree->root.used_by); | |
c55b1410 | 274 | dtree->skip_lockfs = 0; |
b9ffd32c | 275 | dtree->no_flush = 0; |
0395dd22 | 276 | dtree->mem = dmem; |
3d0480ed | 277 | |
b4f1578f AK |
278 | if (!(dtree->devs = dm_hash_create(8))) { |
279 | log_error("dtree hash creation failed"); | |
280 | dm_pool_destroy(dtree->mem); | |
3d0480ed AK |
281 | return NULL; |
282 | } | |
283 | ||
b4f1578f AK |
284 | if (!(dtree->uuids = dm_hash_create(32))) { |
285 | log_error("dtree uuid hash creation failed"); | |
286 | dm_hash_destroy(dtree->devs); | |
287 | dm_pool_destroy(dtree->mem); | |
165e4a11 AK |
288 | return NULL; |
289 | } | |
290 | ||
b4f1578f | 291 | return dtree; |
3d0480ed AK |
292 | } |
293 | ||
b4f1578f | 294 | void dm_tree_free(struct dm_tree *dtree) |
3d0480ed | 295 | { |
b4f1578f | 296 | if (!dtree) |
3d0480ed AK |
297 | return; |
298 | ||
b4f1578f AK |
299 | dm_hash_destroy(dtree->uuids); |
300 | dm_hash_destroy(dtree->devs); | |
301 | dm_pool_destroy(dtree->mem); | |
3d0480ed AK |
302 | } |
303 | ||
04bde319 ZK |
304 | static int _nodes_are_linked(const struct dm_tree_node *parent, |
305 | const struct dm_tree_node *child) | |
3d0480ed | 306 | { |
b4f1578f | 307 | struct dm_tree_link *dlink; |
3d0480ed | 308 | |
2c44337b | 309 | dm_list_iterate_items(dlink, &parent->uses) |
3d0480ed AK |
310 | if (dlink->node == child) |
311 | return 1; | |
3d0480ed AK |
312 | |
313 | return 0; | |
314 | } | |
315 | ||
2c44337b | 316 | static int _link(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 317 | { |
b4f1578f | 318 | struct dm_tree_link *dlink; |
3d0480ed | 319 | |
b4f1578f AK |
320 | if (!(dlink = dm_pool_alloc(node->dtree->mem, sizeof(*dlink)))) { |
321 | log_error("dtree link allocation failed"); | |
3d0480ed AK |
322 | return 0; |
323 | } | |
324 | ||
325 | dlink->node = node; | |
2c44337b | 326 | dm_list_add(list, &dlink->list); |
3d0480ed AK |
327 | |
328 | return 1; | |
329 | } | |
330 | ||
b4f1578f AK |
331 | static int _link_nodes(struct dm_tree_node *parent, |
332 | struct dm_tree_node *child) | |
3d0480ed AK |
333 | { |
334 | if (_nodes_are_linked(parent, child)) | |
335 | return 1; | |
336 | ||
337 | if (!_link(&parent->uses, child)) | |
338 | return 0; | |
339 | ||
340 | if (!_link(&child->used_by, parent)) | |
341 | return 0; | |
342 | ||
343 | return 1; | |
344 | } | |
345 | ||
2c44337b | 346 | static void _unlink(struct dm_list *list, struct dm_tree_node *node) |
3d0480ed | 347 | { |
b4f1578f | 348 | struct dm_tree_link *dlink; |
3d0480ed | 349 | |
2c44337b | 350 | dm_list_iterate_items(dlink, list) |
3d0480ed | 351 | if (dlink->node == node) { |
2c44337b | 352 | dm_list_del(&dlink->list); |
3d0480ed AK |
353 | break; |
354 | } | |
3d0480ed AK |
355 | } |
356 | ||
b4f1578f AK |
357 | static void _unlink_nodes(struct dm_tree_node *parent, |
358 | struct dm_tree_node *child) | |
3d0480ed AK |
359 | { |
360 | if (!_nodes_are_linked(parent, child)) | |
361 | return; | |
362 | ||
363 | _unlink(&parent->uses, child); | |
364 | _unlink(&child->used_by, parent); | |
365 | } | |
366 | ||
b4f1578f | 367 | static int _add_to_toplevel(struct dm_tree_node *node) |
165e4a11 | 368 | { |
b4f1578f | 369 | return _link_nodes(&node->dtree->root, node); |
165e4a11 AK |
370 | } |
371 | ||
b4f1578f | 372 | static void _remove_from_toplevel(struct dm_tree_node *node) |
3d0480ed | 373 | { |
b1ebf028 | 374 | _unlink_nodes(&node->dtree->root, node); |
3d0480ed AK |
375 | } |
376 | ||
b4f1578f | 377 | static int _add_to_bottomlevel(struct dm_tree_node *node) |
3d0480ed | 378 | { |
b4f1578f | 379 | return _link_nodes(node, &node->dtree->root); |
3d0480ed AK |
380 | } |
381 | ||
b4f1578f | 382 | static void _remove_from_bottomlevel(struct dm_tree_node *node) |
165e4a11 | 383 | { |
b1ebf028 | 384 | _unlink_nodes(node, &node->dtree->root); |
165e4a11 AK |
385 | } |
386 | ||
b4f1578f | 387 | static int _link_tree_nodes(struct dm_tree_node *parent, struct dm_tree_node *child) |
165e4a11 AK |
388 | { |
389 | /* Don't link to root node if child already has a parent */ | |
f77736ca | 390 | if (parent == &parent->dtree->root) { |
b4f1578f | 391 | if (dm_tree_node_num_children(child, 1)) |
165e4a11 AK |
392 | return 1; |
393 | } else | |
394 | _remove_from_toplevel(child); | |
395 | ||
f77736ca | 396 | if (child == &child->dtree->root) { |
b4f1578f | 397 | if (dm_tree_node_num_children(parent, 0)) |
165e4a11 AK |
398 | return 1; |
399 | } else | |
400 | _remove_from_bottomlevel(parent); | |
401 | ||
402 | return _link_nodes(parent, child); | |
403 | } | |
404 | ||
b4f1578f | 405 | static struct dm_tree_node *_create_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
406 | const char *name, |
407 | const char *uuid, | |
165e4a11 | 408 | struct dm_info *info, |
f16aea9e PR |
409 | void *context, |
410 | uint16_t udev_flags) | |
3d0480ed | 411 | { |
b4f1578f | 412 | struct dm_tree_node *node; |
3d0480ed AK |
413 | uint64_t dev; |
414 | ||
b4f1578f AK |
415 | if (!(node = dm_pool_zalloc(dtree->mem, sizeof(*node)))) { |
416 | log_error("_create_dm_tree_node alloc failed"); | |
3d0480ed AK |
417 | return NULL; |
418 | } | |
419 | ||
b4f1578f | 420 | node->dtree = dtree; |
3d0480ed AK |
421 | |
422 | node->name = name; | |
423 | node->uuid = uuid; | |
424 | node->info = *info; | |
165e4a11 | 425 | node->context = context; |
f16aea9e | 426 | node->udev_flags = udev_flags; |
56c28292 | 427 | node->activation_priority = 0; |
3d0480ed | 428 | |
2c44337b AK |
429 | dm_list_init(&node->uses); |
430 | dm_list_init(&node->used_by); | |
431 | dm_list_init(&node->props.segs); | |
3d0480ed AK |
432 | |
433 | dev = MKDEV(info->major, info->minor); | |
434 | ||
b4f1578f | 435 | if (!dm_hash_insert_binary(dtree->devs, (const char *) &dev, |
3d0480ed | 436 | sizeof(dev), node)) { |
b4f1578f AK |
437 | log_error("dtree node hash insertion failed"); |
438 | dm_pool_free(dtree->mem, node); | |
3d0480ed AK |
439 | return NULL; |
440 | } | |
441 | ||
165e4a11 | 442 | if (uuid && *uuid && |
b4f1578f AK |
443 | !dm_hash_insert(dtree->uuids, uuid, node)) { |
444 | log_error("dtree uuid hash insertion failed"); | |
445 | dm_hash_remove_binary(dtree->devs, (const char *) &dev, | |
165e4a11 | 446 | sizeof(dev)); |
b4f1578f | 447 | dm_pool_free(dtree->mem, node); |
165e4a11 AK |
448 | return NULL; |
449 | } | |
450 | ||
3d0480ed AK |
451 | return node; |
452 | } | |
453 | ||
b4f1578f | 454 | static struct dm_tree_node *_find_dm_tree_node(struct dm_tree *dtree, |
3d0480ed AK |
455 | uint32_t major, uint32_t minor) |
456 | { | |
457 | uint64_t dev = MKDEV(major, minor); | |
458 | ||
b4f1578f | 459 | return dm_hash_lookup_binary(dtree->devs, (const char *) &dev, |
3d0480ed AK |
460 | sizeof(dev)); |
461 | } | |
462 | ||
b4f1578f | 463 | static struct dm_tree_node *_find_dm_tree_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
464 | const char *uuid) |
465 | { | |
87f98002 AK |
466 | struct dm_tree_node *node; |
467 | ||
468 | if ((node = dm_hash_lookup(dtree->uuids, uuid))) | |
469 | return node; | |
470 | ||
471 | if (strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) | |
472 | return NULL; | |
473 | ||
474 | return dm_hash_lookup(dtree->uuids, uuid + sizeof(UUID_PREFIX) - 1); | |
165e4a11 AK |
475 | } |
476 | ||
a3f6b2ce | 477 | static int _deps(struct dm_task **dmt, struct dm_pool *mem, uint32_t major, uint32_t minor, |
3d0480ed AK |
478 | const char **name, const char **uuid, |
479 | struct dm_info *info, struct dm_deps **deps) | |
480 | { | |
481 | memset(info, 0, sizeof(*info)); | |
482 | ||
483 | if (!dm_is_dm_major(major)) { | |
484 | *name = ""; | |
485 | *uuid = ""; | |
486 | *deps = NULL; | |
487 | info->major = major; | |
488 | info->minor = minor; | |
489 | info->exists = 0; | |
165e4a11 AK |
490 | info->live_table = 0; |
491 | info->inactive_table = 0; | |
492 | info->read_only = 0; | |
3d0480ed AK |
493 | return 1; |
494 | } | |
495 | ||
496 | if (!(*dmt = dm_task_create(DM_DEVICE_DEPS))) { | |
497 | log_error("deps dm_task creation failed"); | |
498 | return 0; | |
499 | } | |
500 | ||
b4f1578f AK |
501 | if (!dm_task_set_major(*dmt, major)) { |
502 | log_error("_deps: failed to set major for (%" PRIu32 ":%" PRIu32 ")", | |
503 | major, minor); | |
3d0480ed | 504 | goto failed; |
b4f1578f | 505 | } |
3d0480ed | 506 | |
b4f1578f AK |
507 | if (!dm_task_set_minor(*dmt, minor)) { |
508 | log_error("_deps: failed to set minor for (%" PRIu32 ":%" PRIu32 ")", | |
509 | major, minor); | |
3d0480ed | 510 | goto failed; |
b4f1578f | 511 | } |
3d0480ed | 512 | |
b4f1578f AK |
513 | if (!dm_task_run(*dmt)) { |
514 | log_error("_deps: task run failed for (%" PRIu32 ":%" PRIu32 ")", | |
515 | major, minor); | |
3d0480ed | 516 | goto failed; |
b4f1578f | 517 | } |
3d0480ed | 518 | |
b4f1578f AK |
519 | if (!dm_task_get_info(*dmt, info)) { |
520 | log_error("_deps: failed to get info for (%" PRIu32 ":%" PRIu32 ")", | |
521 | major, minor); | |
3d0480ed | 522 | goto failed; |
b4f1578f | 523 | } |
3d0480ed AK |
524 | |
525 | if (!info->exists) { | |
526 | *name = ""; | |
527 | *uuid = ""; | |
528 | *deps = NULL; | |
529 | } else { | |
530 | if (info->major != major) { | |
b4f1578f | 531 | log_error("Inconsistent dtree major number: %u != %u", |
3d0480ed AK |
532 | major, info->major); |
533 | goto failed; | |
534 | } | |
535 | if (info->minor != minor) { | |
b4f1578f | 536 | log_error("Inconsistent dtree minor number: %u != %u", |
3d0480ed AK |
537 | minor, info->minor); |
538 | goto failed; | |
539 | } | |
a3f6b2ce | 540 | if (!(*name = dm_pool_strdup(mem, dm_task_get_name(*dmt)))) { |
3d0480ed AK |
541 | log_error("name pool_strdup failed"); |
542 | goto failed; | |
543 | } | |
a3f6b2ce | 544 | if (!(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(*dmt)))) { |
3d0480ed AK |
545 | log_error("uuid pool_strdup failed"); |
546 | goto failed; | |
547 | } | |
548 | *deps = dm_task_get_deps(*dmt); | |
549 | } | |
550 | ||
551 | return 1; | |
552 | ||
553 | failed: | |
554 | dm_task_destroy(*dmt); | |
555 | return 0; | |
556 | } | |
557 | ||
b4f1578f AK |
558 | static struct dm_tree_node *_add_dev(struct dm_tree *dtree, |
559 | struct dm_tree_node *parent, | |
cda69e17 PR |
560 | uint32_t major, uint32_t minor, |
561 | uint16_t udev_flags) | |
3d0480ed AK |
562 | { |
563 | struct dm_task *dmt = NULL; | |
564 | struct dm_info info; | |
565 | struct dm_deps *deps = NULL; | |
566 | const char *name = NULL; | |
567 | const char *uuid = NULL; | |
b4f1578f | 568 | struct dm_tree_node *node = NULL; |
3d0480ed | 569 | uint32_t i; |
3d0480ed AK |
570 | int new = 0; |
571 | ||
572 | /* Already in tree? */ | |
b4f1578f AK |
573 | if (!(node = _find_dm_tree_node(dtree, major, minor))) { |
574 | if (!_deps(&dmt, dtree->mem, major, minor, &name, &uuid, &info, &deps)) | |
575 | return_NULL; | |
3d0480ed | 576 | |
f16aea9e | 577 | if (!(node = _create_dm_tree_node(dtree, name, uuid, &info, |
cda69e17 | 578 | NULL, udev_flags))) |
b4f1578f | 579 | goto_out; |
3d0480ed AK |
580 | new = 1; |
581 | } | |
582 | ||
165e4a11 AK |
583 | if (!_link_tree_nodes(parent, node)) { |
584 | node = NULL; | |
b4f1578f | 585 | goto_out; |
165e4a11 | 586 | } |
3d0480ed AK |
587 | |
588 | /* If node was already in tree, no need to recurse. */ | |
589 | if (!new) | |
165e4a11 | 590 | goto out; |
3d0480ed AK |
591 | |
592 | /* Can't recurse if not a mapped device or there are no dependencies */ | |
593 | if (!node->info.exists || !deps->count) { | |
b4f1578f AK |
594 | if (!_add_to_bottomlevel(node)) { |
595 | stack; | |
165e4a11 | 596 | node = NULL; |
b4f1578f | 597 | } |
165e4a11 | 598 | goto out; |
3d0480ed AK |
599 | } |
600 | ||
601 | /* Add dependencies to tree */ | |
602 | for (i = 0; i < deps->count; i++) | |
b4f1578f | 603 | if (!_add_dev(dtree, node, MAJOR(deps->device[i]), |
cda69e17 | 604 | MINOR(deps->device[i]), udev_flags)) { |
165e4a11 | 605 | node = NULL; |
b4f1578f | 606 | goto_out; |
165e4a11 | 607 | } |
3d0480ed | 608 | |
3d0480ed AK |
609 | out: |
610 | if (dmt) | |
611 | dm_task_destroy(dmt); | |
612 | ||
165e4a11 AK |
613 | return node; |
614 | } | |
615 | ||
b4f1578f | 616 | static int _node_clear_table(struct dm_tree_node *dnode) |
165e4a11 AK |
617 | { |
618 | struct dm_task *dmt; | |
619 | struct dm_info *info; | |
620 | const char *name; | |
621 | int r; | |
622 | ||
623 | if (!(info = &dnode->info)) { | |
b4f1578f | 624 | log_error("_node_clear_table failed: missing info"); |
165e4a11 AK |
625 | return 0; |
626 | } | |
627 | ||
b4f1578f AK |
628 | if (!(name = dm_tree_node_get_name(dnode))) { |
629 | log_error("_node_clear_table failed: missing name"); | |
165e4a11 AK |
630 | return 0; |
631 | } | |
632 | ||
633 | /* Is there a table? */ | |
634 | if (!info->exists || !info->inactive_table) | |
635 | return 1; | |
636 | ||
10d0d9c7 AK |
637 | // FIXME Get inactive deps. If any dev referenced has 1 opener and no live table, remove it after the clear. |
638 | ||
165e4a11 AK |
639 | log_verbose("Clearing inactive table %s (%" PRIu32 ":%" PRIu32 ")", |
640 | name, info->major, info->minor); | |
641 | ||
642 | if (!(dmt = dm_task_create(DM_DEVICE_CLEAR))) { | |
165e4a11 AK |
643 | log_error("Table clear dm_task creation failed for %s", name); |
644 | return 0; | |
645 | } | |
646 | ||
647 | if (!dm_task_set_major(dmt, info->major) || | |
648 | !dm_task_set_minor(dmt, info->minor)) { | |
649 | log_error("Failed to set device number for %s table clear", name); | |
650 | dm_task_destroy(dmt); | |
651 | return 0; | |
652 | } | |
653 | ||
654 | r = dm_task_run(dmt); | |
655 | ||
656 | if (!dm_task_get_info(dmt, info)) { | |
b4f1578f | 657 | log_error("_node_clear_table failed: info missing after running task for %s", name); |
165e4a11 AK |
658 | r = 0; |
659 | } | |
660 | ||
661 | dm_task_destroy(dmt); | |
662 | ||
3d0480ed AK |
663 | return r; |
664 | } | |
665 | ||
b4f1578f | 666 | struct dm_tree_node *dm_tree_add_new_dev(struct dm_tree *dtree, |
165e4a11 AK |
667 | const char *name, |
668 | const char *uuid, | |
669 | uint32_t major, uint32_t minor, | |
670 | int read_only, | |
671 | int clear_inactive, | |
672 | void *context) | |
673 | { | |
b4f1578f | 674 | struct dm_tree_node *dnode; |
165e4a11 AK |
675 | struct dm_info info; |
676 | const char *name2; | |
677 | const char *uuid2; | |
678 | ||
679 | /* Do we need to add node to tree? */ | |
b4f1578f AK |
680 | if (!(dnode = dm_tree_find_node_by_uuid(dtree, uuid))) { |
681 | if (!(name2 = dm_pool_strdup(dtree->mem, name))) { | |
165e4a11 AK |
682 | log_error("name pool_strdup failed"); |
683 | return NULL; | |
684 | } | |
b4f1578f | 685 | if (!(uuid2 = dm_pool_strdup(dtree->mem, uuid))) { |
165e4a11 AK |
686 | log_error("uuid pool_strdup failed"); |
687 | return NULL; | |
688 | } | |
689 | ||
690 | info.major = 0; | |
691 | info.minor = 0; | |
692 | info.exists = 0; | |
693 | info.live_table = 0; | |
694 | info.inactive_table = 0; | |
695 | info.read_only = 0; | |
696 | ||
f16aea9e PR |
697 | if (!(dnode = _create_dm_tree_node(dtree, name2, uuid2, &info, |
698 | context, 0))) | |
b4f1578f | 699 | return_NULL; |
165e4a11 AK |
700 | |
701 | /* Attach to root node until a table is supplied */ | |
b4f1578f AK |
702 | if (!_add_to_toplevel(dnode) || !_add_to_bottomlevel(dnode)) |
703 | return_NULL; | |
165e4a11 AK |
704 | |
705 | dnode->props.major = major; | |
706 | dnode->props.minor = minor; | |
707 | dnode->props.new_name = NULL; | |
bb875bb9 | 708 | dnode->props.size_changed = 0; |
165e4a11 AK |
709 | } else if (strcmp(name, dnode->name)) { |
710 | /* Do we need to rename node? */ | |
b4f1578f | 711 | if (!(dnode->props.new_name = dm_pool_strdup(dtree->mem, name))) { |
165e4a11 AK |
712 | log_error("name pool_strdup failed"); |
713 | return 0; | |
714 | } | |
715 | } | |
716 | ||
717 | dnode->props.read_only = read_only ? 1 : 0; | |
52b84409 AK |
718 | dnode->props.read_ahead = DM_READ_AHEAD_AUTO; |
719 | dnode->props.read_ahead_flags = 0; | |
165e4a11 | 720 | |
b4f1578f AK |
721 | if (clear_inactive && !_node_clear_table(dnode)) |
722 | return_NULL; | |
165e4a11 AK |
723 | |
724 | dnode->context = context; | |
f16aea9e | 725 | dnode->udev_flags = 0; |
165e4a11 AK |
726 | |
727 | return dnode; | |
728 | } | |
729 | ||
f16aea9e PR |
730 | struct dm_tree_node *dm_tree_add_new_dev_with_udev_flags(struct dm_tree *dtree, |
731 | const char *name, | |
732 | const char *uuid, | |
733 | uint32_t major, | |
734 | uint32_t minor, | |
735 | int read_only, | |
736 | int clear_inactive, | |
737 | void *context, | |
738 | uint16_t udev_flags) | |
739 | { | |
740 | struct dm_tree_node *node; | |
741 | ||
742 | if ((node = dm_tree_add_new_dev(dtree, name, uuid, major, minor, read_only, | |
743 | clear_inactive, context))) | |
744 | node->udev_flags = udev_flags; | |
745 | ||
746 | return node; | |
747 | } | |
748 | ||
83c606ae JEB |
749 | void dm_tree_node_set_udev_flags(struct dm_tree_node *dnode, uint16_t udev_flags) |
750 | ||
751 | { | |
752 | struct dm_info *dinfo = &dnode->info; | |
753 | ||
754 | if (udev_flags != dnode->udev_flags) | |
755 | log_debug("Resetting %s (%" PRIu32 ":%" PRIu32 | |
756 | ") udev_flags from 0x%x to 0x%x", | |
757 | dnode->name, dinfo->major, dinfo->minor, | |
758 | dnode->udev_flags, udev_flags); | |
759 | dnode->udev_flags = udev_flags; | |
760 | } | |
f16aea9e | 761 | |
52b84409 AK |
762 | void dm_tree_node_set_read_ahead(struct dm_tree_node *dnode, |
763 | uint32_t read_ahead, | |
764 | uint32_t read_ahead_flags) | |
08e64ce5 | 765 | { |
52b84409 AK |
766 | dnode->props.read_ahead = read_ahead; |
767 | dnode->props.read_ahead_flags = read_ahead_flags; | |
768 | } | |
769 | ||
76d1aec8 ZK |
770 | void dm_tree_node_set_presuspend_node(struct dm_tree_node *node, |
771 | struct dm_tree_node *presuspend_node) | |
772 | { | |
773 | node->presuspend_node = presuspend_node; | |
774 | } | |
775 | ||
b4f1578f | 776 | int dm_tree_add_dev(struct dm_tree *dtree, uint32_t major, uint32_t minor) |
3d0480ed | 777 | { |
cda69e17 PR |
778 | return _add_dev(dtree, &dtree->root, major, minor, 0) ? 1 : 0; |
779 | } | |
780 | ||
781 | int dm_tree_add_dev_with_udev_flags(struct dm_tree *dtree, uint32_t major, | |
782 | uint32_t minor, uint16_t udev_flags) | |
783 | { | |
784 | return _add_dev(dtree, &dtree->root, major, minor, udev_flags) ? 1 : 0; | |
3d0480ed AK |
785 | } |
786 | ||
04bde319 | 787 | const char *dm_tree_node_get_name(const struct dm_tree_node *node) |
3d0480ed AK |
788 | { |
789 | return node->info.exists ? node->name : ""; | |
790 | } | |
791 | ||
04bde319 | 792 | const char *dm_tree_node_get_uuid(const struct dm_tree_node *node) |
3d0480ed AK |
793 | { |
794 | return node->info.exists ? node->uuid : ""; | |
795 | } | |
796 | ||
04bde319 | 797 | const struct dm_info *dm_tree_node_get_info(const struct dm_tree_node *node) |
3d0480ed AK |
798 | { |
799 | return &node->info; | |
800 | } | |
801 | ||
04bde319 | 802 | void *dm_tree_node_get_context(const struct dm_tree_node *node) |
165e4a11 AK |
803 | { |
804 | return node->context; | |
805 | } | |
806 | ||
04bde319 | 807 | int dm_tree_node_size_changed(const struct dm_tree_node *dnode) |
eb91c4ee MB |
808 | { |
809 | return dnode->props.size_changed; | |
810 | } | |
811 | ||
04bde319 | 812 | int dm_tree_node_num_children(const struct dm_tree_node *node, uint32_t inverted) |
3d0480ed AK |
813 | { |
814 | if (inverted) { | |
b4f1578f | 815 | if (_nodes_are_linked(&node->dtree->root, node)) |
3d0480ed | 816 | return 0; |
2c44337b | 817 | return dm_list_size(&node->used_by); |
3d0480ed AK |
818 | } |
819 | ||
b4f1578f | 820 | if (_nodes_are_linked(node, &node->dtree->root)) |
3d0480ed AK |
821 | return 0; |
822 | ||
2c44337b | 823 | return dm_list_size(&node->uses); |
3d0480ed AK |
824 | } |
825 | ||
2b69db1f AK |
826 | /* |
827 | * Returns 1 if no prefix supplied | |
828 | */ | |
829 | static int _uuid_prefix_matches(const char *uuid, const char *uuid_prefix, size_t uuid_prefix_len) | |
830 | { | |
831 | if (!uuid_prefix) | |
832 | return 1; | |
833 | ||
834 | if (!strncmp(uuid, uuid_prefix, uuid_prefix_len)) | |
835 | return 1; | |
836 | ||
837 | /* Handle transition: active device uuids might be missing the prefix */ | |
838 | if (uuid_prefix_len <= 4) | |
839 | return 0; | |
840 | ||
87f98002 | 841 | if (!strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) |
872dea04 AK |
842 | return 0; |
843 | ||
87f98002 | 844 | if (strncmp(uuid_prefix, UUID_PREFIX, sizeof(UUID_PREFIX) - 1)) |
2b69db1f AK |
845 | return 0; |
846 | ||
87f98002 | 847 | if (!strncmp(uuid, uuid_prefix + sizeof(UUID_PREFIX) - 1, uuid_prefix_len - (sizeof(UUID_PREFIX) - 1))) |
2b69db1f AK |
848 | return 1; |
849 | ||
850 | return 0; | |
851 | } | |
852 | ||
690a5da2 AK |
853 | /* |
854 | * Returns 1 if no children. | |
855 | */ | |
b4f1578f | 856 | static int _children_suspended(struct dm_tree_node *node, |
690a5da2 AK |
857 | uint32_t inverted, |
858 | const char *uuid_prefix, | |
859 | size_t uuid_prefix_len) | |
860 | { | |
2c44337b | 861 | struct dm_list *list; |
b4f1578f | 862 | struct dm_tree_link *dlink; |
690a5da2 AK |
863 | const struct dm_info *dinfo; |
864 | const char *uuid; | |
865 | ||
866 | if (inverted) { | |
b4f1578f | 867 | if (_nodes_are_linked(&node->dtree->root, node)) |
690a5da2 AK |
868 | return 1; |
869 | list = &node->used_by; | |
870 | } else { | |
b4f1578f | 871 | if (_nodes_are_linked(node, &node->dtree->root)) |
690a5da2 AK |
872 | return 1; |
873 | list = &node->uses; | |
874 | } | |
875 | ||
2c44337b | 876 | dm_list_iterate_items(dlink, list) { |
b4f1578f | 877 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { |
690a5da2 AK |
878 | stack; |
879 | continue; | |
880 | } | |
881 | ||
882 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 883 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 AK |
884 | continue; |
885 | ||
76d1aec8 ZK |
886 | /* Ignore if parent node wants to presuspend this node */ |
887 | if (dlink->node->presuspend_node == node) | |
888 | continue; | |
889 | ||
b4f1578f AK |
890 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { |
891 | stack; /* FIXME Is this normal? */ | |
690a5da2 AK |
892 | return 0; |
893 | } | |
894 | ||
895 | if (!dinfo->suspended) | |
896 | return 0; | |
897 | } | |
898 | ||
899 | return 1; | |
900 | } | |
901 | ||
3d0480ed AK |
902 | /* |
903 | * Set major and minor to zero for root of tree. | |
904 | */ | |
b4f1578f | 905 | struct dm_tree_node *dm_tree_find_node(struct dm_tree *dtree, |
3d0480ed AK |
906 | uint32_t major, |
907 | uint32_t minor) | |
908 | { | |
909 | if (!major && !minor) | |
b4f1578f | 910 | return &dtree->root; |
3d0480ed | 911 | |
b4f1578f | 912 | return _find_dm_tree_node(dtree, major, minor); |
3d0480ed AK |
913 | } |
914 | ||
165e4a11 AK |
915 | /* |
916 | * Set uuid to NULL for root of tree. | |
917 | */ | |
b4f1578f | 918 | struct dm_tree_node *dm_tree_find_node_by_uuid(struct dm_tree *dtree, |
165e4a11 AK |
919 | const char *uuid) |
920 | { | |
921 | if (!uuid || !*uuid) | |
b4f1578f | 922 | return &dtree->root; |
165e4a11 | 923 | |
b4f1578f | 924 | return _find_dm_tree_node_by_uuid(dtree, uuid); |
165e4a11 AK |
925 | } |
926 | ||
3d0480ed AK |
927 | /* |
928 | * First time set *handle to NULL. | |
929 | * Set inverted to invert the tree. | |
930 | */ | |
b4f1578f | 931 | struct dm_tree_node *dm_tree_next_child(void **handle, |
04bde319 ZK |
932 | const struct dm_tree_node *parent, |
933 | uint32_t inverted) | |
3d0480ed | 934 | { |
2c44337b | 935 | struct dm_list **dlink = (struct dm_list **) handle; |
04bde319 | 936 | const struct dm_list *use_list; |
3d0480ed AK |
937 | |
938 | if (inverted) | |
939 | use_list = &parent->used_by; | |
940 | else | |
941 | use_list = &parent->uses; | |
942 | ||
943 | if (!*dlink) | |
2c44337b | 944 | *dlink = dm_list_first(use_list); |
3d0480ed | 945 | else |
2c44337b | 946 | *dlink = dm_list_next(use_list, *dlink); |
3d0480ed | 947 | |
2c44337b | 948 | return (*dlink) ? dm_list_item(*dlink, struct dm_tree_link)->node : NULL; |
3d0480ed AK |
949 | } |
950 | ||
3e8c6b73 | 951 | /* |
a6d97ede | 952 | * Deactivate a device with its dependencies if the uuid prefix matches. |
3e8c6b73 | 953 | */ |
db208f51 AK |
954 | static int _info_by_dev(uint32_t major, uint32_t minor, int with_open_count, |
955 | struct dm_info *info) | |
3e8c6b73 AK |
956 | { |
957 | struct dm_task *dmt; | |
958 | int r; | |
959 | ||
960 | if (!(dmt = dm_task_create(DM_DEVICE_INFO))) { | |
961 | log_error("_info_by_dev: dm_task creation failed"); | |
962 | return 0; | |
963 | } | |
964 | ||
965 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
966 | log_error("_info_by_dev: Failed to set device number"); | |
967 | dm_task_destroy(dmt); | |
968 | return 0; | |
969 | } | |
970 | ||
db208f51 AK |
971 | if (!with_open_count && !dm_task_no_open_count(dmt)) |
972 | log_error("Failed to disable open_count"); | |
973 | ||
3e8c6b73 AK |
974 | if ((r = dm_task_run(dmt))) |
975 | r = dm_task_get_info(dmt, info); | |
976 | ||
977 | dm_task_destroy(dmt); | |
978 | ||
979 | return r; | |
980 | } | |
981 | ||
4ce43894 | 982 | static int _check_device_not_in_use(const char *name, struct dm_info *info) |
125712be PR |
983 | { |
984 | if (!info->exists) | |
985 | return 1; | |
986 | ||
987 | /* If sysfs is not used, use open_count information only. */ | |
c3e5b497 PR |
988 | if (!*dm_sysfs_dir()) { |
989 | if (info->open_count) { | |
4ce43894 ZK |
990 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") in use", |
991 | name, info->major, info->minor); | |
c3e5b497 PR |
992 | return 0; |
993 | } | |
994 | ||
995 | return 1; | |
996 | } | |
125712be PR |
997 | |
998 | if (dm_device_has_holders(info->major, info->minor)) { | |
4ce43894 ZK |
999 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") is used " |
1000 | "by another device.", name, info->major, info->minor); | |
125712be PR |
1001 | return 0; |
1002 | } | |
1003 | ||
1004 | if (dm_device_has_mounted_fs(info->major, info->minor)) { | |
4ce43894 ZK |
1005 | log_error("Device %s (%" PRIu32 ":%" PRIu32 ") contains " |
1006 | "a filesystem in use.", name, info->major, info->minor); | |
125712be PR |
1007 | return 0; |
1008 | } | |
1009 | ||
1010 | return 1; | |
1011 | } | |
1012 | ||
f3ef15ef ZK |
1013 | /* Check if all parent nodes of given node have open_count == 0 */ |
1014 | static int _node_has_closed_parents(struct dm_tree_node *node, | |
1015 | const char *uuid_prefix, | |
1016 | size_t uuid_prefix_len) | |
1017 | { | |
1018 | struct dm_tree_link *dlink; | |
1019 | const struct dm_info *dinfo; | |
1020 | struct dm_info info; | |
1021 | const char *uuid; | |
1022 | ||
1023 | /* Iterate through parents of this node */ | |
1024 | dm_list_iterate_items(dlink, &node->used_by) { | |
1025 | if (!(uuid = dm_tree_node_get_uuid(dlink->node))) { | |
1026 | stack; | |
1027 | continue; | |
1028 | } | |
1029 | ||
1030 | /* Ignore if it doesn't belong to this VG */ | |
1031 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) | |
1032 | continue; | |
1033 | ||
1034 | if (!(dinfo = dm_tree_node_get_info(dlink->node))) { | |
1035 | stack; /* FIXME Is this normal? */ | |
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | /* Refresh open_count */ | |
1040 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) || | |
1041 | !info.exists) | |
1042 | continue; | |
1043 | ||
eb418883 ZK |
1044 | if (info.open_count) { |
1045 | log_debug("Node %s %d:%d has open_count %d", uuid_prefix, | |
1046 | dinfo->major, dinfo->minor, info.open_count); | |
f3ef15ef | 1047 | return 0; |
eb418883 | 1048 | } |
f3ef15ef ZK |
1049 | } |
1050 | ||
1051 | return 1; | |
1052 | } | |
1053 | ||
f16aea9e | 1054 | static int _deactivate_node(const char *name, uint32_t major, uint32_t minor, |
787200ef | 1055 | uint32_t *cookie, uint16_t udev_flags, int retry) |
3e8c6b73 AK |
1056 | { |
1057 | struct dm_task *dmt; | |
bd90c6b2 | 1058 | int r = 0; |
3e8c6b73 AK |
1059 | |
1060 | log_verbose("Removing %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1061 | ||
1062 | if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) { | |
1063 | log_error("Deactivation dm_task creation failed for %s", name); | |
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1068 | log_error("Failed to set device number for %s deactivation", name); | |
bd90c6b2 | 1069 | goto out; |
3e8c6b73 AK |
1070 | } |
1071 | ||
1072 | if (!dm_task_no_open_count(dmt)) | |
1073 | log_error("Failed to disable open_count"); | |
1074 | ||
f16aea9e | 1075 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1076 | goto out; |
1077 | ||
787200ef PR |
1078 | |
1079 | if (retry) | |
1080 | dm_task_retry_remove(dmt); | |
1081 | ||
3e8c6b73 AK |
1082 | r = dm_task_run(dmt); |
1083 | ||
0437bccc AK |
1084 | /* FIXME Until kernel returns actual name so dm-iface.c can handle it */ |
1085 | rm_dev_node(name, dmt->cookie_set && !(udev_flags & DM_UDEV_DISABLE_DM_RULES_FLAG), | |
9032898e | 1086 | dmt->cookie_set && (udev_flags & DM_UDEV_DISABLE_LIBRARY_FALLBACK)); |
165e4a11 | 1087 | |
db208f51 AK |
1088 | /* FIXME Remove node from tree or mark invalid? */ |
1089 | ||
bd90c6b2 | 1090 | out: |
db208f51 AK |
1091 | dm_task_destroy(dmt); |
1092 | ||
1093 | return r; | |
1094 | } | |
1095 | ||
bd90c6b2 | 1096 | static int _rename_node(const char *old_name, const char *new_name, uint32_t major, |
f16aea9e | 1097 | uint32_t minor, uint32_t *cookie, uint16_t udev_flags) |
165e4a11 AK |
1098 | { |
1099 | struct dm_task *dmt; | |
1100 | int r = 0; | |
1101 | ||
1102 | log_verbose("Renaming %s (%" PRIu32 ":%" PRIu32 ") to %s", old_name, major, minor, new_name); | |
1103 | ||
1104 | if (!(dmt = dm_task_create(DM_DEVICE_RENAME))) { | |
1105 | log_error("Rename dm_task creation failed for %s", old_name); | |
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | if (!dm_task_set_name(dmt, old_name)) { | |
1110 | log_error("Failed to set name for %s rename.", old_name); | |
1111 | goto out; | |
1112 | } | |
1113 | ||
b4f1578f | 1114 | if (!dm_task_set_newname(dmt, new_name)) |
40e5fd8b | 1115 | goto_out; |
165e4a11 AK |
1116 | |
1117 | if (!dm_task_no_open_count(dmt)) | |
1118 | log_error("Failed to disable open_count"); | |
1119 | ||
f16aea9e | 1120 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
bd90c6b2 AK |
1121 | goto out; |
1122 | ||
165e4a11 AK |
1123 | r = dm_task_run(dmt); |
1124 | ||
1125 | out: | |
1126 | dm_task_destroy(dmt); | |
1127 | ||
1128 | return r; | |
1129 | } | |
1130 | ||
165e4a11 AK |
1131 | /* FIXME Merge with _suspend_node? */ |
1132 | static int _resume_node(const char *name, uint32_t major, uint32_t minor, | |
52b84409 | 1133 | uint32_t read_ahead, uint32_t read_ahead_flags, |
f16aea9e | 1134 | struct dm_info *newinfo, uint32_t *cookie, |
1840aa09 | 1135 | uint16_t udev_flags, int already_suspended) |
165e4a11 AK |
1136 | { |
1137 | struct dm_task *dmt; | |
bd90c6b2 | 1138 | int r = 0; |
165e4a11 AK |
1139 | |
1140 | log_verbose("Resuming %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor); | |
1141 | ||
1142 | if (!(dmt = dm_task_create(DM_DEVICE_RESUME))) { | |
9a8f192a | 1143 | log_debug("Suspend dm_task creation failed for %s.", name); |
165e4a11 AK |
1144 | return 0; |
1145 | } | |
1146 | ||
0b7d16bc AK |
1147 | /* FIXME Kernel should fill in name on return instead */ |
1148 | if (!dm_task_set_name(dmt, name)) { | |
9a8f192a | 1149 | log_debug("Failed to set device name for %s resumption.", name); |
bd90c6b2 | 1150 | goto out; |
0b7d16bc AK |
1151 | } |
1152 | ||
165e4a11 AK |
1153 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { |
1154 | log_error("Failed to set device number for %s resumption.", name); | |
bd90c6b2 | 1155 | goto out; |
165e4a11 AK |
1156 | } |
1157 | ||
1158 | if (!dm_task_no_open_count(dmt)) | |
1159 | log_error("Failed to disable open_count"); | |
1160 | ||
52b84409 AK |
1161 | if (!dm_task_set_read_ahead(dmt, read_ahead, read_ahead_flags)) |
1162 | log_error("Failed to set read ahead"); | |
1163 | ||
f16aea9e | 1164 | if (!dm_task_set_cookie(dmt, cookie, udev_flags)) |
9a8f192a | 1165 | goto_out; |
bd90c6b2 | 1166 | |
9a8f192a ZK |
1167 | if (!(r = dm_task_run(dmt))) |
1168 | goto_out; | |
1169 | ||
1170 | if (already_suspended) | |
1171 | dec_suspended(); | |
1172 | ||
1173 | if (!(r = dm_task_get_info(dmt, newinfo))) | |
1174 | stack; | |
165e4a11 | 1175 | |
bd90c6b2 | 1176 | out: |
165e4a11 AK |
1177 | dm_task_destroy(dmt); |
1178 | ||
1179 | return r; | |
1180 | } | |
1181 | ||
db208f51 | 1182 | static int _suspend_node(const char *name, uint32_t major, uint32_t minor, |
b9ffd32c | 1183 | int skip_lockfs, int no_flush, struct dm_info *newinfo) |
db208f51 AK |
1184 | { |
1185 | struct dm_task *dmt; | |
1186 | int r; | |
1187 | ||
b9ffd32c AK |
1188 | log_verbose("Suspending %s (%" PRIu32 ":%" PRIu32 ")%s%s", |
1189 | name, major, minor, | |
1190 | skip_lockfs ? "" : " with filesystem sync", | |
6e1898a5 | 1191 | no_flush ? "" : " with device flush"); |
db208f51 AK |
1192 | |
1193 | if (!(dmt = dm_task_create(DM_DEVICE_SUSPEND))) { | |
1194 | log_error("Suspend dm_task creation failed for %s", name); | |
1195 | return 0; | |
1196 | } | |
1197 | ||
1198 | if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) { | |
1199 | log_error("Failed to set device number for %s suspension.", name); | |
1200 | dm_task_destroy(dmt); | |
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | if (!dm_task_no_open_count(dmt)) | |
1205 | log_error("Failed to disable open_count"); | |
1206 | ||
c55b1410 AK |
1207 | if (skip_lockfs && !dm_task_skip_lockfs(dmt)) |
1208 | log_error("Failed to set skip_lockfs flag."); | |
1209 | ||
b9ffd32c AK |
1210 | if (no_flush && !dm_task_no_flush(dmt)) |
1211 | log_error("Failed to set no_flush flag."); | |
1212 | ||
1840aa09 AK |
1213 | if ((r = dm_task_run(dmt))) { |
1214 | inc_suspended(); | |
db208f51 | 1215 | r = dm_task_get_info(dmt, newinfo); |
1840aa09 | 1216 | } |
db208f51 | 1217 | |
3e8c6b73 AK |
1218 | dm_task_destroy(dmt); |
1219 | ||
1220 | return r; | |
1221 | } | |
1222 | ||
25e6ab87 | 1223 | static int _thin_pool_status_transaction_id(struct dm_tree_node *dnode, uint64_t *transaction_id) |
e0ea24be ZK |
1224 | { |
1225 | struct dm_task *dmt; | |
1226 | int r = 0; | |
1227 | uint64_t start, length; | |
1228 | char *type = NULL; | |
1229 | char *params = NULL; | |
e0ea24be | 1230 | |
25e6ab87 ZK |
1231 | if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) |
1232 | return_0; | |
e0ea24be | 1233 | |
25e6ab87 ZK |
1234 | if (!dm_task_set_major(dmt, dnode->info.major) || |
1235 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
1236 | log_error("Failed to set major minor."); | |
1237 | goto out; | |
e0ea24be ZK |
1238 | } |
1239 | ||
25e6ab87 ZK |
1240 | if (!dm_task_run(dmt)) |
1241 | goto_out; | |
1242 | ||
1243 | dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms); | |
1244 | ||
1245 | if (type && (strcmp(type, "thin-pool") != 0)) { | |
c590a9cd | 1246 | log_error("Expected thin-pool target for %d:%d and got %s.", |
25e6ab87 | 1247 | dnode->info.major, dnode->info.minor, type); |
e0ea24be ZK |
1248 | goto out; |
1249 | } | |
1250 | ||
25e6ab87 | 1251 | if (!params || (sscanf(params, "%" PRIu64, transaction_id) != 1)) { |
c590a9cd | 1252 | log_error("Failed to parse transaction_id from %s.", params); |
e0ea24be ZK |
1253 | goto out; |
1254 | } | |
1255 | ||
25e6ab87 | 1256 | log_debug("Thin pool transaction id: %" PRIu64 " status: %s.", *transaction_id, params); |
e0ea24be | 1257 | |
25e6ab87 ZK |
1258 | r = 1; |
1259 | out: | |
1260 | dm_task_destroy(dmt); | |
e0ea24be | 1261 | |
25e6ab87 ZK |
1262 | return r; |
1263 | } | |
e0ea24be | 1264 | |
25e6ab87 ZK |
1265 | static int _thin_pool_node_message(struct dm_tree_node *dnode, struct thin_message *tm) |
1266 | { | |
1267 | struct dm_task *dmt; | |
1268 | struct dm_thin_message *m = &tm->message; | |
1269 | char buf[64]; | |
1270 | int r; | |
e0ea24be | 1271 | |
25e6ab87 ZK |
1272 | switch (m->type) { |
1273 | case DM_THIN_MESSAGE_CREATE_SNAP: | |
1274 | r = dm_snprintf(buf, sizeof(buf), "create_snap %u %u", | |
1275 | m->u.m_create_snap.device_id, | |
1276 | m->u.m_create_snap.origin_id); | |
1277 | break; | |
1278 | case DM_THIN_MESSAGE_CREATE_THIN: | |
1279 | r = dm_snprintf(buf, sizeof(buf), "create_thin %u", | |
1280 | m->u.m_create_thin.device_id); | |
1281 | break; | |
1282 | case DM_THIN_MESSAGE_DELETE: | |
1283 | r = dm_snprintf(buf, sizeof(buf), "delete %u", | |
1284 | m->u.m_delete.device_id); | |
1285 | break; | |
1286 | case DM_THIN_MESSAGE_TRIM: | |
1287 | r = dm_snprintf(buf, sizeof(buf), "trim %u %" PRIu64, | |
1288 | m->u.m_trim.device_id, | |
1289 | m->u.m_trim.new_size); | |
1290 | break; | |
1291 | case DM_THIN_MESSAGE_SET_TRANSACTION_ID: | |
1292 | r = dm_snprintf(buf, sizeof(buf), | |
1293 | "set_transaction_id %" PRIu64 " %" PRIu64, | |
1294 | m->u.m_set_transaction_id.current_id, | |
1295 | m->u.m_set_transaction_id.new_id); | |
1296 | break; | |
25de9add ZK |
1297 | default: |
1298 | r = -1; | |
25e6ab87 ZK |
1299 | } |
1300 | ||
25de9add | 1301 | if (r < 0) { |
25e6ab87 ZK |
1302 | log_error("Failed to prepare message."); |
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | r = 0; | |
1307 | ||
1308 | if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG))) | |
1309 | return_0; | |
1310 | ||
1311 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
1312 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
1313 | log_error("Failed to set message major minor."); | |
1314 | goto out; | |
1315 | } | |
1316 | ||
1317 | if (!dm_task_set_message(dmt, buf)) | |
1318 | goto_out; | |
1319 | ||
660a42bc ZK |
1320 | /* Internal functionality of dm_task */ |
1321 | dmt->expected_errno = tm->expected_errno; | |
1322 | ||
25e6ab87 ZK |
1323 | if (!dm_task_run(dmt)) |
1324 | goto_out; | |
1325 | ||
1326 | r = 1; | |
e0ea24be ZK |
1327 | out: |
1328 | dm_task_destroy(dmt); | |
1329 | ||
1330 | return r; | |
1331 | } | |
1332 | ||
11f64f0a ZK |
1333 | static int _node_send_messages(struct dm_tree_node *dnode, |
1334 | const char *uuid_prefix, | |
1335 | size_t uuid_prefix_len) | |
25e6ab87 ZK |
1336 | { |
1337 | struct load_segment *seg; | |
1338 | struct thin_message *tmsg; | |
11f64f0a | 1339 | uint64_t trans_id; |
25e6ab87 ZK |
1340 | const char *uuid; |
1341 | ||
bbcd37e4 | 1342 | if (!dnode->info.exists || (dm_list_size(&dnode->props.segs) != 1)) |
25e6ab87 ZK |
1343 | return 1; |
1344 | ||
1345 | seg = dm_list_item(dm_list_last(&dnode->props.segs), struct load_segment); | |
25e6ab87 ZK |
1346 | if (seg->type != SEG_THIN_POOL) |
1347 | return 1; | |
1348 | ||
1349 | if (!(uuid = dm_tree_node_get_uuid(dnode))) | |
1350 | return_0; | |
1351 | ||
1352 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) { | |
1353 | log_debug("UUID \"%s\" does not match.", uuid); | |
1354 | return 1; | |
1355 | } | |
1356 | ||
11f64f0a | 1357 | if (!_thin_pool_status_transaction_id(dnode, &trans_id)) |
bbcd37e4 | 1358 | goto_bad; |
25e6ab87 | 1359 | |
bbcd37e4 | 1360 | if (trans_id == seg->transaction_id) |
25e6ab87 ZK |
1361 | return 1; /* In sync - skip messages */ |
1362 | ||
bbcd37e4 | 1363 | if (trans_id != (seg->transaction_id - 1)) { |
25e6ab87 | 1364 | log_error("Thin pool transaction_id=%" PRIu64 ", while expected: %" PRIu64 ".", |
bbcd37e4 ZK |
1365 | trans_id, seg->transaction_id - 1); |
1366 | goto bad; /* Nothing to send */ | |
25e6ab87 ZK |
1367 | } |
1368 | ||
1369 | dm_list_iterate_items(tmsg, &seg->thin_messages) | |
1370 | if (!(_thin_pool_node_message(dnode, tmsg))) | |
bbcd37e4 | 1371 | goto_bad; |
25e6ab87 ZK |
1372 | |
1373 | return 1; | |
bbcd37e4 ZK |
1374 | bad: |
1375 | /* Try to deactivate */ | |
1376 | if (!(dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len))) | |
1377 | log_error("Failed to deactivate %s", dnode->name); | |
1378 | ||
1379 | return 0; | |
25e6ab87 ZK |
1380 | } |
1381 | ||
18e0f934 AK |
1382 | /* |
1383 | * FIXME Don't attempt to deactivate known internal dependencies. | |
1384 | */ | |
1385 | static int _dm_tree_deactivate_children(struct dm_tree_node *dnode, | |
1386 | const char *uuid_prefix, | |
1387 | size_t uuid_prefix_len, | |
1388 | unsigned level) | |
3e8c6b73 | 1389 | { |
b7eb2ad0 | 1390 | int r = 1; |
3e8c6b73 | 1391 | void *handle = NULL; |
b4f1578f | 1392 | struct dm_tree_node *child = dnode; |
3e8c6b73 AK |
1393 | struct dm_info info; |
1394 | const struct dm_info *dinfo; | |
1395 | const char *name; | |
1396 | const char *uuid; | |
1397 | ||
b4f1578f AK |
1398 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1399 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
3e8c6b73 AK |
1400 | stack; |
1401 | continue; | |
1402 | } | |
1403 | ||
b4f1578f | 1404 | if (!(name = dm_tree_node_get_name(child))) { |
3e8c6b73 AK |
1405 | stack; |
1406 | continue; | |
1407 | } | |
1408 | ||
b4f1578f | 1409 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
3e8c6b73 AK |
1410 | stack; |
1411 | continue; | |
1412 | } | |
1413 | ||
1414 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1415 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
3e8c6b73 | 1416 | continue; |
3e8c6b73 AK |
1417 | |
1418 | /* Refresh open_count */ | |
db208f51 | 1419 | if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) || |
f55021f4 | 1420 | !info.exists) |
3e8c6b73 AK |
1421 | continue; |
1422 | ||
4ce43894 ZK |
1423 | if (info.open_count) { |
1424 | /* Skip internal non-toplevel opened nodes */ | |
1425 | if (level) | |
1426 | continue; | |
1427 | ||
1428 | /* When retry is not allowed, error */ | |
1429 | if (!child->dtree->retry_remove) { | |
1430 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1431 | ":%" PRIu32 ")", name, info.major, info.minor); | |
1432 | r = 0; | |
1433 | continue; | |
1434 | } | |
1435 | ||
1436 | /* Check toplevel node for holders/mounted fs */ | |
1437 | if (!_check_device_not_in_use(name, &info)) { | |
1438 | stack; | |
1439 | r = 0; | |
1440 | continue; | |
1441 | } | |
1442 | /* Go on with retry */ | |
1443 | } | |
125712be | 1444 | |
f3ef15ef | 1445 | /* Also checking open_count in parent nodes of presuspend_node */ |
125712be | 1446 | if ((child->presuspend_node && |
f3ef15ef ZK |
1447 | !_node_has_closed_parents(child->presuspend_node, |
1448 | uuid_prefix, uuid_prefix_len))) { | |
18e0f934 AK |
1449 | /* Only report error from (likely non-internal) dependency at top level */ |
1450 | if (!level) { | |
1451 | log_error("Unable to deactivate open %s (%" PRIu32 | |
1452 | ":%" PRIu32 ")", name, info.major, | |
1453 | info.minor); | |
1454 | r = 0; | |
1455 | } | |
f55021f4 AK |
1456 | continue; |
1457 | } | |
1458 | ||
76d1aec8 ZK |
1459 | /* Suspend child node first if requested */ |
1460 | if (child->presuspend_node && | |
1461 | !dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) | |
1462 | continue; | |
1463 | ||
f16aea9e | 1464 | if (!_deactivate_node(name, info.major, info.minor, |
787200ef | 1465 | &child->dtree->cookie, child->udev_flags, |
4ce43894 | 1466 | (level == 0) ? child->dtree->retry_remove : 0)) { |
3e8c6b73 AK |
1467 | log_error("Unable to deactivate %s (%" PRIu32 |
1468 | ":%" PRIu32 ")", name, info.major, | |
1469 | info.minor); | |
b7eb2ad0 | 1470 | r = 0; |
3e8c6b73 | 1471 | continue; |
f4249251 AK |
1472 | } else if (info.suspended) |
1473 | dec_suspended(); | |
3e8c6b73 | 1474 | |
18e0f934 AK |
1475 | if (dm_tree_node_num_children(child, 0)) { |
1476 | if (!_dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len, level + 1)) | |
b7eb2ad0 | 1477 | return_0; |
18e0f934 | 1478 | } |
3e8c6b73 AK |
1479 | } |
1480 | ||
b7eb2ad0 | 1481 | return r; |
3e8c6b73 | 1482 | } |
db208f51 | 1483 | |
18e0f934 AK |
1484 | int dm_tree_deactivate_children(struct dm_tree_node *dnode, |
1485 | const char *uuid_prefix, | |
1486 | size_t uuid_prefix_len) | |
1487 | { | |
1488 | return _dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len, 0); | |
1489 | } | |
1490 | ||
c55b1410 AK |
1491 | void dm_tree_skip_lockfs(struct dm_tree_node *dnode) |
1492 | { | |
1493 | dnode->dtree->skip_lockfs = 1; | |
1494 | } | |
1495 | ||
b9ffd32c AK |
1496 | void dm_tree_use_no_flush_suspend(struct dm_tree_node *dnode) |
1497 | { | |
1498 | dnode->dtree->no_flush = 1; | |
1499 | } | |
1500 | ||
787200ef PR |
1501 | void dm_tree_retry_remove(struct dm_tree_node *dnode) |
1502 | { | |
1503 | dnode->dtree->retry_remove = 1; | |
1504 | } | |
1505 | ||
b4f1578f | 1506 | int dm_tree_suspend_children(struct dm_tree_node *dnode, |
08e64ce5 ZK |
1507 | const char *uuid_prefix, |
1508 | size_t uuid_prefix_len) | |
db208f51 | 1509 | { |
68085c93 | 1510 | int r = 1; |
db208f51 | 1511 | void *handle = NULL; |
b4f1578f | 1512 | struct dm_tree_node *child = dnode; |
db208f51 AK |
1513 | struct dm_info info, newinfo; |
1514 | const struct dm_info *dinfo; | |
1515 | const char *name; | |
1516 | const char *uuid; | |
1517 | ||
690a5da2 | 1518 | /* Suspend nodes at this level of the tree */ |
b4f1578f AK |
1519 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1520 | if (!(dinfo = dm_tree_node_get_info(child))) { | |
db208f51 AK |
1521 | stack; |
1522 | continue; | |
1523 | } | |
1524 | ||
b4f1578f | 1525 | if (!(name = dm_tree_node_get_name(child))) { |
db208f51 AK |
1526 | stack; |
1527 | continue; | |
1528 | } | |
1529 | ||
b4f1578f | 1530 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
db208f51 AK |
1531 | stack; |
1532 | continue; | |
1533 | } | |
1534 | ||
1535 | /* Ignore if it doesn't belong to this VG */ | |
2b69db1f | 1536 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
db208f51 AK |
1537 | continue; |
1538 | ||
690a5da2 AK |
1539 | /* Ensure immediate parents are already suspended */ |
1540 | if (!_children_suspended(child, 1, uuid_prefix, uuid_prefix_len)) | |
1541 | continue; | |
1542 | ||
db208f51 | 1543 | if (!_info_by_dev(dinfo->major, dinfo->minor, 0, &info) || |
b700541f | 1544 | !info.exists || info.suspended) |
db208f51 AK |
1545 | continue; |
1546 | ||
c55b1410 | 1547 | if (!_suspend_node(name, info.major, info.minor, |
b9ffd32c AK |
1548 | child->dtree->skip_lockfs, |
1549 | child->dtree->no_flush, &newinfo)) { | |
db208f51 AK |
1550 | log_error("Unable to suspend %s (%" PRIu32 |
1551 | ":%" PRIu32 ")", name, info.major, | |
1552 | info.minor); | |
68085c93 | 1553 | r = 0; |
db208f51 AK |
1554 | continue; |
1555 | } | |
1556 | ||
1557 | /* Update cached info */ | |
1558 | child->info = newinfo; | |
690a5da2 AK |
1559 | } |
1560 | ||
1561 | /* Then suspend any child nodes */ | |
1562 | handle = NULL; | |
1563 | ||
b4f1578f AK |
1564 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1565 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
690a5da2 AK |
1566 | stack; |
1567 | continue; | |
1568 | } | |
1569 | ||
1570 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 | 1571 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
690a5da2 | 1572 | continue; |
db208f51 | 1573 | |
b4f1578f | 1574 | if (dm_tree_node_num_children(child, 0)) |
68085c93 MS |
1575 | if (!dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len)) |
1576 | return_0; | |
db208f51 AK |
1577 | } |
1578 | ||
68085c93 | 1579 | return r; |
db208f51 AK |
1580 | } |
1581 | ||
b4f1578f | 1582 | int dm_tree_activate_children(struct dm_tree_node *dnode, |
db208f51 AK |
1583 | const char *uuid_prefix, |
1584 | size_t uuid_prefix_len) | |
1585 | { | |
2ca6b865 | 1586 | int r = 1; |
db208f51 | 1587 | void *handle = NULL; |
b4f1578f | 1588 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
1589 | struct dm_info newinfo; |
1590 | const char *name; | |
db208f51 | 1591 | const char *uuid; |
56c28292 | 1592 | int priority; |
db208f51 | 1593 | |
165e4a11 | 1594 | /* Activate children first */ |
b4f1578f AK |
1595 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
1596 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
165e4a11 AK |
1597 | stack; |
1598 | continue; | |
db208f51 AK |
1599 | } |
1600 | ||
908db078 AK |
1601 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1602 | continue; | |
db208f51 | 1603 | |
b4f1578f | 1604 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
1605 | if (!dm_tree_activate_children(child, uuid_prefix, uuid_prefix_len)) |
1606 | return_0; | |
56c28292 | 1607 | } |
165e4a11 | 1608 | |
56c28292 | 1609 | handle = NULL; |
165e4a11 | 1610 | |
aa6f4e51 | 1611 | for (priority = 0; priority < 3; priority++) { |
56c28292 | 1612 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
a5a31ce9 ZK |
1613 | if (priority != child->activation_priority) |
1614 | continue; | |
1615 | ||
56c28292 AK |
1616 | if (!(uuid = dm_tree_node_get_uuid(child))) { |
1617 | stack; | |
1618 | continue; | |
165e4a11 | 1619 | } |
165e4a11 | 1620 | |
56c28292 AK |
1621 | if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
1622 | continue; | |
165e4a11 | 1623 | |
56c28292 AK |
1624 | if (!(name = dm_tree_node_get_name(child))) { |
1625 | stack; | |
1626 | continue; | |
1627 | } | |
1628 | ||
1629 | /* Rename? */ | |
1630 | if (child->props.new_name) { | |
bd90c6b2 | 1631 | if (!_rename_node(name, child->props.new_name, child->info.major, |
f16aea9e PR |
1632 | child->info.minor, &child->dtree->cookie, |
1633 | child->udev_flags)) { | |
56c28292 AK |
1634 | log_error("Failed to rename %s (%" PRIu32 |
1635 | ":%" PRIu32 ") to %s", name, child->info.major, | |
1636 | child->info.minor, child->props.new_name); | |
1637 | return 0; | |
1638 | } | |
1639 | child->name = child->props.new_name; | |
1640 | child->props.new_name = NULL; | |
1641 | } | |
1642 | ||
1643 | if (!child->info.inactive_table && !child->info.suspended) | |
1644 | continue; | |
1645 | ||
bafa2f39 | 1646 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 1647 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 | 1648 | &newinfo, &child->dtree->cookie, child->udev_flags, child->info.suspended)) { |
56c28292 | 1649 | log_error("Unable to resume %s (%" PRIu32 |
bafa2f39 | 1650 | ":%" PRIu32 ")", child->name, child->info.major, |
56c28292 | 1651 | child->info.minor); |
2ca6b865 | 1652 | r = 0; |
56c28292 AK |
1653 | continue; |
1654 | } | |
1655 | ||
1656 | /* Update cached info */ | |
1657 | child->info = newinfo; | |
1658 | } | |
db208f51 AK |
1659 | } |
1660 | ||
165e4a11 AK |
1661 | handle = NULL; |
1662 | ||
2ca6b865 | 1663 | return r; |
165e4a11 AK |
1664 | } |
1665 | ||
b4f1578f | 1666 | static int _create_node(struct dm_tree_node *dnode) |
165e4a11 AK |
1667 | { |
1668 | int r = 0; | |
1669 | struct dm_task *dmt; | |
1670 | ||
1671 | log_verbose("Creating %s", dnode->name); | |
1672 | ||
1673 | if (!(dmt = dm_task_create(DM_DEVICE_CREATE))) { | |
1674 | log_error("Create dm_task creation failed for %s", dnode->name); | |
1675 | return 0; | |
1676 | } | |
1677 | ||
1678 | if (!dm_task_set_name(dmt, dnode->name)) { | |
1679 | log_error("Failed to set device name for %s", dnode->name); | |
1680 | goto out; | |
1681 | } | |
1682 | ||
1683 | if (!dm_task_set_uuid(dmt, dnode->uuid)) { | |
1684 | log_error("Failed to set uuid for %s", dnode->name); | |
1685 | goto out; | |
1686 | } | |
1687 | ||
1688 | if (dnode->props.major && | |
1689 | (!dm_task_set_major(dmt, dnode->props.major) || | |
1690 | !dm_task_set_minor(dmt, dnode->props.minor))) { | |
1691 | log_error("Failed to set device number for %s creation.", dnode->name); | |
1692 | goto out; | |
1693 | } | |
1694 | ||
1695 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
1696 | log_error("Failed to set read only flag for %s", dnode->name); | |
1697 | goto out; | |
1698 | } | |
1699 | ||
1700 | if (!dm_task_no_open_count(dmt)) | |
1701 | log_error("Failed to disable open_count"); | |
1702 | ||
1703 | if ((r = dm_task_run(dmt))) | |
1704 | r = dm_task_get_info(dmt, &dnode->info); | |
1705 | ||
1706 | out: | |
1707 | dm_task_destroy(dmt); | |
1708 | ||
1709 | return r; | |
1710 | } | |
1711 | ||
1712 | ||
b4f1578f | 1713 | static int _build_dev_string(char *devbuf, size_t bufsize, struct dm_tree_node *node) |
165e4a11 AK |
1714 | { |
1715 | if (!dm_format_dev(devbuf, bufsize, node->info.major, node->info.minor)) { | |
40e5fd8b AK |
1716 | log_error("Failed to format %s device number for %s as dm " |
1717 | "target (%u,%u)", | |
1718 | node->name, node->uuid, node->info.major, node->info.minor); | |
1719 | return 0; | |
165e4a11 AK |
1720 | } |
1721 | ||
1722 | return 1; | |
1723 | } | |
1724 | ||
ffa9b6a5 ZK |
1725 | /* simplify string emiting code */ |
1726 | #define EMIT_PARAMS(p, str...)\ | |
7b6c011c AK |
1727 | do {\ |
1728 | int w;\ | |
1729 | if ((w = dm_snprintf(params + p, paramsize - (size_t) p, str)) < 0) {\ | |
1730 | stack; /* Out of space */\ | |
1731 | return -1;\ | |
1732 | }\ | |
1733 | p += w;\ | |
1734 | } while (0) | |
ffa9b6a5 | 1735 | |
3c74075f JEB |
1736 | /* |
1737 | * _emit_areas_line | |
1738 | * | |
1739 | * Returns: 1 on success, 0 on failure | |
1740 | */ | |
08f1ddea | 1741 | static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)), |
4dcaa230 AK |
1742 | struct load_segment *seg, char *params, |
1743 | size_t paramsize, int *pos) | |
165e4a11 AK |
1744 | { |
1745 | struct seg_area *area; | |
7d7d93ac | 1746 | char devbuf[DM_FORMAT_DEV_BUFSIZE]; |
609faae9 | 1747 | unsigned first_time = 1; |
db3c1ac1 | 1748 | const char *logtype, *synctype; |
b262f3e1 | 1749 | unsigned log_parm_count; |
165e4a11 | 1750 | |
2c44337b | 1751 | dm_list_iterate_items(area, &seg->areas) { |
b262f3e1 ZK |
1752 | switch (seg->type) { |
1753 | case SEG_REPLICATOR_DEV: | |
6d04311e JEB |
1754 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1755 | return_0; | |
1756 | ||
b262f3e1 ZK |
1757 | EMIT_PARAMS(*pos, " %d 1 %s", area->rsite_index, devbuf); |
1758 | if (first_time) | |
1759 | EMIT_PARAMS(*pos, " nolog 0"); | |
1760 | else { | |
1761 | /* Remote devices */ | |
1762 | log_parm_count = (area->flags & | |
1763 | (DM_NOSYNC | DM_FORCESYNC)) ? 2 : 1; | |
1764 | ||
1765 | if (!area->slog) { | |
1766 | devbuf[0] = 0; /* Only core log parameters */ | |
1767 | logtype = "core"; | |
1768 | } else { | |
1769 | devbuf[0] = ' '; /* Extra space before device name */ | |
1770 | if (!_build_dev_string(devbuf + 1, | |
1771 | sizeof(devbuf) - 1, | |
1772 | area->slog)) | |
1773 | return_0; | |
1774 | logtype = "disk"; | |
1775 | log_parm_count++; /* Extra sync log device name parameter */ | |
1776 | } | |
1777 | ||
1778 | EMIT_PARAMS(*pos, " %s %u%s %" PRIu64, logtype, | |
1779 | log_parm_count, devbuf, area->region_size); | |
1780 | ||
db3c1ac1 AK |
1781 | synctype = (area->flags & DM_NOSYNC) ? |
1782 | " nosync" : (area->flags & DM_FORCESYNC) ? | |
1783 | " sync" : NULL; | |
b262f3e1 | 1784 | |
db3c1ac1 AK |
1785 | if (synctype) |
1786 | EMIT_PARAMS(*pos, "%s", synctype); | |
b262f3e1 ZK |
1787 | } |
1788 | break; | |
cac52ca4 JEB |
1789 | case SEG_RAID1: |
1790 | case SEG_RAID4: | |
1791 | case SEG_RAID5_LA: | |
1792 | case SEG_RAID5_RA: | |
1793 | case SEG_RAID5_LS: | |
1794 | case SEG_RAID5_RS: | |
1795 | case SEG_RAID6_ZR: | |
1796 | case SEG_RAID6_NR: | |
1797 | case SEG_RAID6_NC: | |
6d04311e JEB |
1798 | if (!area->dev_node) { |
1799 | EMIT_PARAMS(*pos, " -"); | |
1800 | break; | |
1801 | } | |
1802 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) | |
1803 | return_0; | |
1804 | ||
cac52ca4 JEB |
1805 | EMIT_PARAMS(*pos, " %s", devbuf); |
1806 | break; | |
b262f3e1 | 1807 | default: |
6d04311e JEB |
1808 | if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node)) |
1809 | return_0; | |
1810 | ||
b262f3e1 ZK |
1811 | EMIT_PARAMS(*pos, "%s%s %" PRIu64, first_time ? "" : " ", |
1812 | devbuf, area->offset); | |
1813 | } | |
609faae9 AK |
1814 | |
1815 | first_time = 0; | |
165e4a11 AK |
1816 | } |
1817 | ||
1818 | return 1; | |
1819 | } | |
1820 | ||
b262f3e1 ZK |
1821 | static int _replicator_emit_segment_line(const struct load_segment *seg, char *params, |
1822 | size_t paramsize, int *pos) | |
1823 | { | |
1824 | const struct load_segment *rlog_seg; | |
1825 | struct replicator_site *rsite; | |
1826 | char rlogbuf[DM_FORMAT_DEV_BUFSIZE]; | |
1827 | unsigned parm_count; | |
1828 | ||
1829 | if (!seg->log || !_build_dev_string(rlogbuf, sizeof(rlogbuf), seg->log)) | |
1830 | return_0; | |
1831 | ||
1832 | rlog_seg = dm_list_item(dm_list_last(&seg->log->props.segs), | |
1833 | struct load_segment); | |
1834 | ||
1835 | EMIT_PARAMS(*pos, "%s 4 %s 0 auto %" PRIu64, | |
1836 | seg->rlog_type, rlogbuf, rlog_seg->size); | |
1837 | ||
1838 | dm_list_iterate_items(rsite, &seg->rsites) { | |
1839 | parm_count = (rsite->fall_behind_data | |
1840 | || rsite->fall_behind_ios | |
1841 | || rsite->async_timeout) ? 4 : 2; | |
1842 | ||
1843 | EMIT_PARAMS(*pos, " blockdev %u %u %s", parm_count, rsite->rsite_index, | |
1844 | (rsite->mode == DM_REPLICATOR_SYNC) ? "synchronous" : "asynchronous"); | |
1845 | ||
1846 | if (rsite->fall_behind_data) | |
1847 | EMIT_PARAMS(*pos, " data %" PRIu64, rsite->fall_behind_data); | |
1848 | else if (rsite->fall_behind_ios) | |
1849 | EMIT_PARAMS(*pos, " ios %" PRIu32, rsite->fall_behind_ios); | |
1850 | else if (rsite->async_timeout) | |
1851 | EMIT_PARAMS(*pos, " timeout %" PRIu32, rsite->async_timeout); | |
1852 | } | |
1853 | ||
1854 | return 1; | |
1855 | } | |
1856 | ||
3c74075f | 1857 | /* |
3c74075f JEB |
1858 | * Returns: 1 on success, 0 on failure |
1859 | */ | |
beecb1e1 ZK |
1860 | static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *seg, |
1861 | char *params, size_t paramsize) | |
165e4a11 | 1862 | { |
8f26e18c JEB |
1863 | int block_on_error = 0; |
1864 | int handle_errors = 0; | |
1865 | int dm_log_userspace = 0; | |
1866 | struct utsname uts; | |
dbcb64b8 | 1867 | unsigned log_parm_count; |
b39fdcf4 | 1868 | int pos = 0, parts; |
7d7d93ac | 1869 | char logbuf[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 1870 | const char *logtype; |
b39fdcf4 | 1871 | unsigned kmaj = 0, kmin = 0, krel = 0; |
165e4a11 | 1872 | |
b39fdcf4 MB |
1873 | if (uname(&uts) == -1) { |
1874 | log_error("Cannot read kernel release version."); | |
1875 | return 0; | |
1876 | } | |
1877 | ||
1878 | /* Kernels with a major number of 2 always had 3 parts. */ | |
1879 | parts = sscanf(uts.release, "%u.%u.%u", &kmaj, &kmin, &krel); | |
1880 | if (parts < 1 || (kmaj < 3 && parts < 3)) { | |
1881 | log_error("Wrong kernel release version %s.", uts.release); | |
30a65310 ZK |
1882 | return 0; |
1883 | } | |
67b25ed4 | 1884 | |
8f26e18c JEB |
1885 | if ((seg->flags & DM_BLOCK_ON_ERROR)) { |
1886 | /* | |
1887 | * Originally, block_on_error was an argument to the log | |
1888 | * portion of the mirror CTR table. It was renamed to | |
1889 | * "handle_errors" and now resides in the 'features' | |
1890 | * section of the mirror CTR table (i.e. at the end). | |
1891 | * | |
1892 | * We can identify whether to use "block_on_error" or | |
1893 | * "handle_errors" by the dm-mirror module's version | |
1894 | * number (>= 1.12) or by the kernel version (>= 2.6.22). | |
1895 | */ | |
ba61f848 | 1896 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 22)) |
8f26e18c JEB |
1897 | handle_errors = 1; |
1898 | else | |
1899 | block_on_error = 1; | |
1900 | } | |
1901 | ||
1902 | if (seg->clustered) { | |
1903 | /* Cluster mirrors require a UUID */ | |
1904 | if (!seg->uuid) | |
1905 | return_0; | |
1906 | ||
1907 | /* | |
1908 | * Cluster mirrors used to have their own log | |
1909 | * types. Now they are accessed through the | |
1910 | * userspace log type. | |
1911 | * | |
1912 | * The dm-log-userspace module was added to the | |
1913 | * 2.6.31 kernel. | |
1914 | */ | |
ba61f848 | 1915 | if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 31)) |
8f26e18c JEB |
1916 | dm_log_userspace = 1; |
1917 | } | |
1918 | ||
1919 | /* Region size */ | |
1920 | log_parm_count = 1; | |
1921 | ||
1922 | /* [no]sync, block_on_error etc. */ | |
1923 | log_parm_count += hweight32(seg->flags); | |
311d6d81 | 1924 | |
8f26e18c JEB |
1925 | /* "handle_errors" is a feature arg now */ |
1926 | if (handle_errors) | |
1927 | log_parm_count--; | |
1928 | ||
1929 | /* DM_CORELOG does not count in the param list */ | |
1930 | if (seg->flags & DM_CORELOG) | |
1931 | log_parm_count--; | |
1932 | ||
1933 | if (seg->clustered) { | |
1934 | log_parm_count++; /* For UUID */ | |
1935 | ||
1936 | if (!dm_log_userspace) | |
ffa9b6a5 | 1937 | EMIT_PARAMS(pos, "clustered-"); |
49b95a5e JEB |
1938 | else |
1939 | /* For clustered-* type field inserted later */ | |
1940 | log_parm_count++; | |
8f26e18c | 1941 | } |
dbcb64b8 | 1942 | |
8f26e18c JEB |
1943 | if (!seg->log) |
1944 | logtype = "core"; | |
1945 | else { | |
1946 | logtype = "disk"; | |
1947 | log_parm_count++; | |
1948 | if (!_build_dev_string(logbuf, sizeof(logbuf), seg->log)) | |
1949 | return_0; | |
1950 | } | |
dbcb64b8 | 1951 | |
8f26e18c JEB |
1952 | if (dm_log_userspace) |
1953 | EMIT_PARAMS(pos, "userspace %u %s clustered-%s", | |
1954 | log_parm_count, seg->uuid, logtype); | |
1955 | else | |
ffa9b6a5 | 1956 | EMIT_PARAMS(pos, "%s %u", logtype, log_parm_count); |
dbcb64b8 | 1957 | |
8f26e18c JEB |
1958 | if (seg->log) |
1959 | EMIT_PARAMS(pos, " %s", logbuf); | |
1960 | ||
1961 | EMIT_PARAMS(pos, " %u", seg->region_size); | |
dbcb64b8 | 1962 | |
8f26e18c JEB |
1963 | if (seg->clustered && !dm_log_userspace) |
1964 | EMIT_PARAMS(pos, " %s", seg->uuid); | |
67b25ed4 | 1965 | |
8f26e18c JEB |
1966 | if ((seg->flags & DM_NOSYNC)) |
1967 | EMIT_PARAMS(pos, " nosync"); | |
1968 | else if ((seg->flags & DM_FORCESYNC)) | |
1969 | EMIT_PARAMS(pos, " sync"); | |
dbcb64b8 | 1970 | |
8f26e18c JEB |
1971 | if (block_on_error) |
1972 | EMIT_PARAMS(pos, " block_on_error"); | |
1973 | ||
1974 | EMIT_PARAMS(pos, " %u ", seg->mirror_area_count); | |
1975 | ||
5f3325fc | 1976 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) |
3c74075f | 1977 | return_0; |
dbcb64b8 | 1978 | |
8f26e18c JEB |
1979 | if (handle_errors) |
1980 | EMIT_PARAMS(pos, " 1 handle_errors"); | |
ffa9b6a5 | 1981 | |
3c74075f | 1982 | return 1; |
8f26e18c JEB |
1983 | } |
1984 | ||
cac52ca4 JEB |
1985 | static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, |
1986 | uint32_t minor, struct load_segment *seg, | |
1987 | uint64_t *seg_start, char *params, | |
1988 | size_t paramsize) | |
1989 | { | |
ad2432dc | 1990 | uint32_t i; |
cac52ca4 JEB |
1991 | int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */ |
1992 | int pos = 0; | |
1993 | ||
1994 | if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC)) | |
1995 | param_count++; | |
1996 | ||
1997 | if (seg->region_size) | |
1998 | param_count += 2; | |
1999 | ||
ad2432dc MB |
2000 | /* rebuilds is 64-bit */ |
2001 | param_count += 2 * hweight32(seg->rebuilds & 0xFFFFFFFF); | |
2002 | param_count += 2 * hweight32(seg->rebuilds >> 32); | |
f439e65b | 2003 | |
cac52ca4 JEB |
2004 | if ((seg->type == SEG_RAID1) && seg->stripe_size) |
2005 | log_error("WARNING: Ignoring RAID1 stripe size"); | |
2006 | ||
2007 | EMIT_PARAMS(pos, "%s %d %u", dm_segtypes[seg->type].target, | |
2008 | param_count, seg->stripe_size); | |
2009 | ||
2010 | if (seg->flags & DM_NOSYNC) | |
2011 | EMIT_PARAMS(pos, " nosync"); | |
2012 | else if (seg->flags & DM_FORCESYNC) | |
2013 | EMIT_PARAMS(pos, " sync"); | |
2014 | ||
2015 | if (seg->region_size) | |
2016 | EMIT_PARAMS(pos, " region_size %u", seg->region_size); | |
2017 | ||
f439e65b JEB |
2018 | for (i = 0; i < (seg->area_count / 2); i++) |
2019 | if (seg->rebuilds & (1 << i)) | |
2020 | EMIT_PARAMS(pos, " rebuild %u", i); | |
2021 | ||
cac52ca4 JEB |
2022 | /* Print number of metadata/data device pairs */ |
2023 | EMIT_PARAMS(pos, " %u", seg->area_count/2); | |
2024 | ||
2025 | if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0) | |
2026 | return_0; | |
2027 | ||
2028 | return 1; | |
2029 | } | |
2030 | ||
8f26e18c JEB |
2031 | static int _emit_segment_line(struct dm_task *dmt, uint32_t major, |
2032 | uint32_t minor, struct load_segment *seg, | |
2033 | uint64_t *seg_start, char *params, | |
2034 | size_t paramsize) | |
2035 | { | |
2036 | int pos = 0; | |
2037 | int r; | |
cac52ca4 | 2038 | int target_type_is_raid = 0; |
8f26e18c | 2039 | char originbuf[DM_FORMAT_DEV_BUFSIZE], cowbuf[DM_FORMAT_DEV_BUFSIZE]; |
4251236e | 2040 | char pool[DM_FORMAT_DEV_BUFSIZE], metadata[DM_FORMAT_DEV_BUFSIZE]; |
dbcb64b8 | 2041 | |
8f26e18c JEB |
2042 | switch(seg->type) { |
2043 | case SEG_ERROR: | |
2044 | case SEG_ZERO: | |
2045 | case SEG_LINEAR: | |
2046 | break; | |
2047 | case SEG_MIRRORED: | |
2048 | /* Mirrors are pretty complicated - now in separate function */ | |
beecb1e1 | 2049 | r = _mirror_emit_segment_line(dmt, seg, params, paramsize); |
3c74075f JEB |
2050 | if (!r) |
2051 | return_0; | |
165e4a11 | 2052 | break; |
b262f3e1 ZK |
2053 | case SEG_REPLICATOR: |
2054 | if ((r = _replicator_emit_segment_line(seg, params, paramsize, | |
2055 | &pos)) <= 0) { | |
2056 | stack; | |
2057 | return r; | |
2058 | } | |
2059 | break; | |
2060 | case SEG_REPLICATOR_DEV: | |
2061 | if (!seg->replicator || !_build_dev_string(originbuf, | |
2062 | sizeof(originbuf), | |
2063 | seg->replicator)) | |
2064 | return_0; | |
2065 | ||
2066 | EMIT_PARAMS(pos, "%s %" PRIu64, originbuf, seg->rdevice_index); | |
2067 | break; | |
165e4a11 | 2068 | case SEG_SNAPSHOT: |
aa6f4e51 | 2069 | case SEG_SNAPSHOT_MERGE: |
b4f1578f AK |
2070 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
2071 | return_0; | |
2072 | if (!_build_dev_string(cowbuf, sizeof(cowbuf), seg->cow)) | |
2073 | return_0; | |
ffa9b6a5 ZK |
2074 | EMIT_PARAMS(pos, "%s %s %c %d", originbuf, cowbuf, |
2075 | seg->persistent ? 'P' : 'N', seg->chunk_size); | |
165e4a11 AK |
2076 | break; |
2077 | case SEG_SNAPSHOT_ORIGIN: | |
b4f1578f AK |
2078 | if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin)) |
2079 | return_0; | |
ffa9b6a5 | 2080 | EMIT_PARAMS(pos, "%s", originbuf); |
165e4a11 AK |
2081 | break; |
2082 | case SEG_STRIPED: | |
609faae9 | 2083 | EMIT_PARAMS(pos, "%u %u ", seg->area_count, seg->stripe_size); |
165e4a11 | 2084 | break; |
12ca060e | 2085 | case SEG_CRYPT: |
609faae9 | 2086 | EMIT_PARAMS(pos, "%s%s%s%s%s %s %" PRIu64 " ", seg->cipher, |
12ca060e MB |
2087 | seg->chainmode ? "-" : "", seg->chainmode ?: "", |
2088 | seg->iv ? "-" : "", seg->iv ?: "", seg->key, | |
2089 | seg->iv_offset != DM_CRYPT_IV_DEFAULT ? | |
2090 | seg->iv_offset : *seg_start); | |
2091 | break; | |
cac52ca4 JEB |
2092 | case SEG_RAID1: |
2093 | case SEG_RAID4: | |
2094 | case SEG_RAID5_LA: | |
2095 | case SEG_RAID5_RA: | |
2096 | case SEG_RAID5_LS: | |
2097 | case SEG_RAID5_RS: | |
2098 | case SEG_RAID6_ZR: | |
2099 | case SEG_RAID6_NR: | |
2100 | case SEG_RAID6_NC: | |
2101 | target_type_is_raid = 1; | |
2102 | r = _raid_emit_segment_line(dmt, major, minor, seg, seg_start, | |
2103 | params, paramsize); | |
2104 | if (!r) | |
2105 | return_0; | |
2106 | ||
2107 | break; | |
4251236e ZK |
2108 | case SEG_THIN_POOL: |
2109 | if (!_build_dev_string(metadata, sizeof(metadata), seg->metadata)) | |
2110 | return_0; | |
2111 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
2112 | return_0; | |
2113 | EMIT_PARAMS(pos, "%s %s %d %" PRIu64 " %s", metadata, pool, | |
e9156c2b | 2114 | seg->data_block_size, seg->low_water_mark, |
ac08d9c0 | 2115 | seg->skip_block_zeroing ? "1 skip_block_zeroing" : "0"); |
4251236e ZK |
2116 | break; |
2117 | case SEG_THIN: | |
2118 | if (!_build_dev_string(pool, sizeof(pool), seg->pool)) | |
2119 | return_0; | |
2120 | EMIT_PARAMS(pos, "%s %d", pool, seg->device_id); | |
2121 | break; | |
165e4a11 AK |
2122 | } |
2123 | ||
2124 | switch(seg->type) { | |
2125 | case SEG_ERROR: | |
b262f3e1 | 2126 | case SEG_REPLICATOR: |
165e4a11 AK |
2127 | case SEG_SNAPSHOT: |
2128 | case SEG_SNAPSHOT_ORIGIN: | |
aa6f4e51 | 2129 | case SEG_SNAPSHOT_MERGE: |
165e4a11 | 2130 | case SEG_ZERO: |
4251236e ZK |
2131 | case SEG_THIN_POOL: |
2132 | case SEG_THIN: | |
165e4a11 | 2133 | break; |
12ca060e | 2134 | case SEG_CRYPT: |
165e4a11 | 2135 | case SEG_LINEAR: |
b262f3e1 | 2136 | case SEG_REPLICATOR_DEV: |
165e4a11 AK |
2137 | case SEG_STRIPED: |
2138 | if ((r = _emit_areas_line(dmt, seg, params, paramsize, &pos)) <= 0) { | |
2139 | stack; | |
2140 | return r; | |
2141 | } | |
b6793963 AK |
2142 | if (!params[0]) { |
2143 | log_error("No parameters supplied for %s target " | |
2144 | "%u:%u.", dm_segtypes[seg->type].target, | |
812e10ac | 2145 | major, minor); |
b6793963 AK |
2146 | return 0; |
2147 | } | |
165e4a11 AK |
2148 | break; |
2149 | } | |
2150 | ||
4b2cae46 AK |
2151 | log_debug("Adding target to (%" PRIu32 ":%" PRIu32 "): %" PRIu64 |
2152 | " %" PRIu64 " %s %s", major, minor, | |
f439e65b JEB |
2153 | *seg_start, seg->size, target_type_is_raid ? "raid" : |
2154 | dm_segtypes[seg->type].target, params); | |
165e4a11 | 2155 | |
cac52ca4 JEB |
2156 | if (!dm_task_add_target(dmt, *seg_start, seg->size, |
2157 | target_type_is_raid ? "raid" : | |
2158 | dm_segtypes[seg->type].target, params)) | |
b4f1578f | 2159 | return_0; |
165e4a11 AK |
2160 | |
2161 | *seg_start += seg->size; | |
2162 | ||
2163 | return 1; | |
2164 | } | |
2165 | ||
ffa9b6a5 ZK |
2166 | #undef EMIT_PARAMS |
2167 | ||
4b2cae46 AK |
2168 | static int _emit_segment(struct dm_task *dmt, uint32_t major, uint32_t minor, |
2169 | struct load_segment *seg, uint64_t *seg_start) | |
165e4a11 AK |
2170 | { |
2171 | char *params; | |
2172 | size_t paramsize = 4096; | |
2173 | int ret; | |
2174 | ||
2175 | do { | |
2176 | if (!(params = dm_malloc(paramsize))) { | |
2177 | log_error("Insufficient space for target parameters."); | |
2178 | return 0; | |
2179 | } | |
2180 | ||
12ea7cb1 | 2181 | params[0] = '\0'; |
4b2cae46 AK |
2182 | ret = _emit_segment_line(dmt, major, minor, seg, seg_start, |
2183 | params, paramsize); | |
165e4a11 AK |
2184 | dm_free(params); |
2185 | ||
2186 | if (!ret) | |
2187 | stack; | |
2188 | ||
2189 | if (ret >= 0) | |
2190 | return ret; | |
2191 | ||
2192 | log_debug("Insufficient space in params[%" PRIsize_t | |
2193 | "] for target parameters.", paramsize); | |
2194 | ||
2195 | paramsize *= 2; | |
2196 | } while (paramsize < MAX_TARGET_PARAMSIZE); | |
2197 | ||
2198 | log_error("Target parameter size too big. Aborting."); | |
2199 | return 0; | |
2200 | } | |
2201 | ||
b4f1578f | 2202 | static int _load_node(struct dm_tree_node *dnode) |
165e4a11 AK |
2203 | { |
2204 | int r = 0; | |
2205 | struct dm_task *dmt; | |
2206 | struct load_segment *seg; | |
df390f17 | 2207 | uint64_t seg_start = 0, existing_table_size; |
165e4a11 | 2208 | |
4b2cae46 AK |
2209 | log_verbose("Loading %s table (%" PRIu32 ":%" PRIu32 ")", dnode->name, |
2210 | dnode->info.major, dnode->info.minor); | |
165e4a11 AK |
2211 | |
2212 | if (!(dmt = dm_task_create(DM_DEVICE_RELOAD))) { | |
2213 | log_error("Reload dm_task creation failed for %s", dnode->name); | |
2214 | return 0; | |
2215 | } | |
2216 | ||
2217 | if (!dm_task_set_major(dmt, dnode->info.major) || | |
2218 | !dm_task_set_minor(dmt, dnode->info.minor)) { | |
2219 | log_error("Failed to set device number for %s reload.", dnode->name); | |
2220 | goto out; | |
2221 | } | |
2222 | ||
2223 | if (dnode->props.read_only && !dm_task_set_ro(dmt)) { | |
2224 | log_error("Failed to set read only flag for %s", dnode->name); | |
2225 | goto out; | |
2226 | } | |
2227 | ||
2228 | if (!dm_task_no_open_count(dmt)) | |
2229 | log_error("Failed to disable open_count"); | |
2230 | ||
2c44337b | 2231 | dm_list_iterate_items(seg, &dnode->props.segs) |
4b2cae46 AK |
2232 | if (!_emit_segment(dmt, dnode->info.major, dnode->info.minor, |
2233 | seg, &seg_start)) | |
b4f1578f | 2234 | goto_out; |
165e4a11 | 2235 | |
ec289b64 AK |
2236 | if (!dm_task_suppress_identical_reload(dmt)) |
2237 | log_error("Failed to suppress reload of identical tables."); | |
2238 | ||
2239 | if ((r = dm_task_run(dmt))) { | |
165e4a11 | 2240 | r = dm_task_get_info(dmt, &dnode->info); |
ec289b64 AK |
2241 | if (r && !dnode->info.inactive_table) |
2242 | log_verbose("Suppressed %s identical table reload.", | |
2243 | dnode->name); | |
bb875bb9 | 2244 | |
df390f17 | 2245 | existing_table_size = dm_task_get_existing_table_size(dmt); |
bb875bb9 | 2246 | if ((dnode->props.size_changed = |
df390f17 | 2247 | (existing_table_size == seg_start) ? 0 : 1)) { |
bb875bb9 | 2248 | log_debug("Table size changed from %" PRIu64 " to %" |
df390f17 | 2249 | PRIu64 " for %s", existing_table_size, |
bb875bb9 | 2250 | seg_start, dnode->name); |
df390f17 AK |
2251 | /* |
2252 | * Kernel usually skips size validation on zero-length devices | |
2253 | * now so no need to preload them. | |
2254 | */ | |
2255 | /* FIXME In which kernel version did this begin? */ | |
2256 | if (!existing_table_size && dnode->props.delay_resume_if_new) | |
2257 | dnode->props.size_changed = 0; | |
2258 | } | |
ec289b64 | 2259 | } |
165e4a11 AK |
2260 | |
2261 | dnode->props.segment_count = 0; | |
2262 | ||
2263 | out: | |
2264 | dm_task_destroy(dmt); | |
2265 | ||
2266 | return r; | |
165e4a11 AK |
2267 | } |
2268 | ||
b4f1578f | 2269 | int dm_tree_preload_children(struct dm_tree_node *dnode, |
bb875bb9 AK |
2270 | const char *uuid_prefix, |
2271 | size_t uuid_prefix_len) | |
165e4a11 | 2272 | { |
2ca6b865 | 2273 | int r = 1; |
165e4a11 | 2274 | void *handle = NULL; |
b4f1578f | 2275 | struct dm_tree_node *child; |
165e4a11 | 2276 | struct dm_info newinfo; |
566515c0 | 2277 | int update_devs_flag = 0; |
165e4a11 AK |
2278 | |
2279 | /* Preload children first */ | |
b4f1578f | 2280 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
165e4a11 AK |
2281 | /* Skip existing non-device-mapper devices */ |
2282 | if (!child->info.exists && child->info.major) | |
2283 | continue; | |
2284 | ||
2285 | /* Ignore if it doesn't belong to this VG */ | |
87f98002 AK |
2286 | if (child->info.exists && |
2287 | !_uuid_prefix_matches(child->uuid, uuid_prefix, uuid_prefix_len)) | |
165e4a11 AK |
2288 | continue; |
2289 | ||
b4f1578f | 2290 | if (dm_tree_node_num_children(child, 0)) |
2ca6b865 MS |
2291 | if (!dm_tree_preload_children(child, uuid_prefix, uuid_prefix_len)) |
2292 | return_0; | |
165e4a11 | 2293 | |
165e4a11 | 2294 | /* FIXME Cope if name exists with no uuid? */ |
3d6782b3 ZK |
2295 | if (!child->info.exists && !_create_node(child)) |
2296 | return_0; | |
165e4a11 | 2297 | |
3d6782b3 ZK |
2298 | if (!child->info.inactive_table && |
2299 | child->props.segment_count && | |
2300 | !_load_node(child)) | |
2301 | return_0; | |
165e4a11 | 2302 | |
eb91c4ee MB |
2303 | /* Propagate device size change change */ |
2304 | if (child->props.size_changed) | |
2305 | dnode->props.size_changed = 1; | |
2306 | ||
bb875bb9 | 2307 | /* Resume device immediately if it has parents and its size changed */ |
3776c494 | 2308 | if (!dm_tree_node_num_children(child, 1) || !child->props.size_changed) |
165e4a11 AK |
2309 | continue; |
2310 | ||
7707ea90 AK |
2311 | if (!child->info.inactive_table && !child->info.suspended) |
2312 | continue; | |
2313 | ||
fc795d87 | 2314 | if (!_resume_node(child->name, child->info.major, child->info.minor, |
bd90c6b2 | 2315 | child->props.read_ahead, child->props.read_ahead_flags, |
1840aa09 AK |
2316 | &newinfo, &child->dtree->cookie, child->udev_flags, |
2317 | child->info.suspended)) { | |
165e4a11 | 2318 | log_error("Unable to resume %s (%" PRIu32 |
fc795d87 | 2319 | ":%" PRIu32 ")", child->name, child->info.major, |
165e4a11 | 2320 | child->info.minor); |
2ca6b865 | 2321 | r = 0; |
165e4a11 AK |
2322 | continue; |
2323 | } | |
2324 | ||
2325 | /* Update cached info */ | |
2326 | child->info = newinfo; | |
bbcd37e4 ZK |
2327 | if (child->props.send_messages && |
2328 | !(r = _node_send_messages(child, uuid_prefix, uuid_prefix_len))) { | |
2329 | stack; | |
2330 | continue; | |
2331 | } | |
566515c0 PR |
2332 | /* |
2333 | * Prepare for immediate synchronization with udev and flush all stacked | |
2334 | * dev node operations if requested by immediate_dev_node property. But | |
2335 | * finish processing current level in the tree first. | |
2336 | */ | |
2337 | if (child->props.immediate_dev_node) | |
2338 | update_devs_flag = 1; | |
165e4a11 AK |
2339 | } |
2340 | ||
bbcd37e4 ZK |
2341 | if (r && dnode->props.send_messages && |
2342 | !(r = _node_send_messages(dnode, uuid_prefix, uuid_prefix_len))) | |
2343 | stack; | |
165e4a11 | 2344 | |
566515c0 PR |
2345 | if (update_devs_flag) { |
2346 | if (!dm_udev_wait(dm_tree_get_cookie(dnode))) | |
2347 | stack; | |
2348 | dm_tree_set_cookie(dnode, 0); | |
566515c0 PR |
2349 | } |
2350 | ||
11f64f0a | 2351 | if (r && !_node_send_messages(dnode, uuid_prefix, uuid_prefix_len)) { |
25e6ab87 ZK |
2352 | stack; |
2353 | if (!(dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len))) | |
2354 | log_error("Failed to deactivate %s", dnode->name); | |
2355 | r = 0; | |
2356 | } | |
2357 | ||
2ca6b865 | 2358 | return r; |
165e4a11 AK |
2359 | } |
2360 | ||
165e4a11 AK |
2361 | /* |
2362 | * Returns 1 if unsure. | |
2363 | */ | |
b4f1578f | 2364 | int dm_tree_children_use_uuid(struct dm_tree_node *dnode, |
165e4a11 AK |
2365 | const char *uuid_prefix, |
2366 | size_t uuid_prefix_len) | |
2367 | { | |
2368 | void *handle = NULL; | |
b4f1578f | 2369 | struct dm_tree_node *child = dnode; |
165e4a11 AK |
2370 | const char *uuid; |
2371 | ||
b4f1578f AK |
2372 | while ((child = dm_tree_next_child(&handle, dnode, 0))) { |
2373 | if (!(uuid = dm_tree_node_get_uuid(child))) { | |
2374 | log_error("Failed to get uuid for dtree node."); | |
165e4a11 AK |
2375 | return 1; |
2376 | } | |
2377 | ||
87f98002 | 2378 | if (_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) |
165e4a11 AK |
2379 | return 1; |
2380 | ||
b4f1578f AK |
2381 | if (dm_tree_node_num_children(child, 0)) |
2382 | dm_tree_children_use_uuid(child, uuid_prefix, uuid_prefix_len); | |
165e4a11 AK |
2383 | } |
2384 | ||
2385 | return 0; | |
2386 | } | |
2387 | ||
2388 | /* | |
2389 | * Target functions | |
2390 | */ | |
b4f1578f | 2391 | static struct load_segment *_add_segment(struct dm_tree_node *dnode, unsigned type, uint64_t size) |
165e4a11 AK |
2392 | { |
2393 | struct load_segment *seg; | |
2394 | ||
b4f1578f AK |
2395 | if (!(seg = dm_pool_zalloc(dnode->dtree->mem, sizeof(*seg)))) { |
2396 | log_error("dtree node segment allocation failed"); | |
165e4a11 AK |
2397 | return NULL; |
2398 | } | |
2399 | ||
2400 | seg->type = type; | |
2401 | seg->size = size; | |
2402 | seg->area_count = 0; | |
2c44337b | 2403 | dm_list_init(&seg->areas); |
165e4a11 AK |
2404 | seg->stripe_size = 0; |
2405 | seg->persistent = 0; | |
2406 | seg->chunk_size = 0; | |
2407 | seg->cow = NULL; | |
2408 | seg->origin = NULL; | |
aa6f4e51 | 2409 | seg->merge = NULL; |
165e4a11 | 2410 | |
2c44337b | 2411 | dm_list_add(&dnode->props.segs, &seg->list); |
165e4a11 AK |
2412 | dnode->props.segment_count++; |
2413 | ||
2414 | return seg; | |
2415 | } | |
2416 | ||
b4f1578f | 2417 | int dm_tree_node_add_snapshot_origin_target(struct dm_tree_node *dnode, |
40e5fd8b AK |
2418 | uint64_t size, |
2419 | const char *origin_uuid) | |
165e4a11 AK |
2420 | { |
2421 | struct load_segment *seg; | |
b4f1578f | 2422 | struct dm_tree_node *origin_node; |
165e4a11 | 2423 | |
b4f1578f AK |
2424 | if (!(seg = _add_segment(dnode, SEG_SNAPSHOT_ORIGIN, size))) |
2425 | return_0; | |
165e4a11 | 2426 | |
b4f1578f | 2427 | if (!(origin_node = dm_tree_find_node_by_uuid(dnode->dtree, origin_uuid))) { |
165e4a11 AK |
2428 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | seg->origin = origin_node; | |
b4f1578f AK |
2433 | if (!_link_tree_nodes(dnode, origin_node)) |
2434 | return_0; | |
165e4a11 | 2435 | |
56c28292 AK |
2436 | /* Resume snapshot origins after new snapshots */ |
2437 | dnode->activation_priority = 1; | |
2438 | ||
165e4a11 AK |
2439 | return 1; |
2440 | } | |
2441 | ||
aa6f4e51 MS |
2442 | static int _add_snapshot_target(struct dm_tree_node *node, |
2443 | uint64_t size, | |
2444 | const char *origin_uuid, | |
2445 | const char *cow_uuid, | |
2446 | const char *merge_uuid, | |
2447 | int persistent, | |
2448 | uint32_t chunk_size) | |
165e4a11 AK |
2449 | { |
2450 | struct load_segment *seg; | |
aa6f4e51 MS |
2451 | struct dm_tree_node *origin_node, *cow_node, *merge_node; |
2452 | unsigned seg_type; | |
2453 | ||
2454 | seg_type = !merge_uuid ? SEG_SNAPSHOT : SEG_SNAPSHOT_MERGE; | |
165e4a11 | 2455 | |
aa6f4e51 | 2456 | if (!(seg = _add_segment(node, seg_type, size))) |
b4f1578f | 2457 | return_0; |
165e4a11 | 2458 | |
b4f1578f | 2459 | if (!(origin_node = dm_tree_find_node_by_uuid(node->dtree, origin_uuid))) { |
165e4a11 AK |
2460 | log_error("Couldn't find snapshot origin uuid %s.", origin_uuid); |
2461 | return 0; | |
2462 | } | |
2463 | ||
2464 | seg->origin = origin_node; | |
b4f1578f AK |
2465 | if (!_link_tree_nodes(node, origin_node)) |
2466 | return_0; | |
165e4a11 | 2467 | |
b4f1578f | 2468 | if (!(cow_node = dm_tree_find_node_by_uuid(node->dtree, cow_uuid))) { |
aa6f4e51 | 2469 | log_error("Couldn't find snapshot COW device uuid %s.", cow_uuid); |
165e4a11 AK |
2470 | return 0; |
2471 | } | |
2472 | ||
2473 | seg->cow = cow_node; | |
b4f1578f AK |
2474 | if (!_link_tree_nodes(node, cow_node)) |
2475 | return_0; | |
165e4a11 AK |
2476 | |
2477 | seg->persistent = persistent ? 1 : 0; | |
2478 | seg->chunk_size = chunk_size; | |
2479 | ||
aa6f4e51 MS |
2480 | if (merge_uuid) { |
2481 | if (!(merge_node = dm_tree_find_node_by_uuid(node->dtree, merge_uuid))) { | |
2482 | /* not a pure error, merging snapshot may have been deactivated */ | |
2483 | log_verbose("Couldn't find merging snapshot uuid %s.", merge_uuid); | |
2484 | } else { | |
2485 | seg->merge = merge_node; | |
2486 | /* must not link merging snapshot, would undermine activation_priority below */ | |
2487 | } | |
2488 | ||
2489 | /* Resume snapshot-merge (acting origin) after other snapshots */ | |
2490 | node->activation_priority = 1; | |
2491 | if (seg->merge) { | |
2492 | /* Resume merging snapshot after snapshot-merge */ | |
2493 | seg->merge->activation_priority = 2; | |
2494 | } | |
2495 | } | |
2496 | ||
165e4a11 AK |
2497 | return 1; |
2498 | } | |
2499 | ||
aa6f4e51 MS |
2500 | |
2501 | int dm_tree_node_add_snapshot_target(struct dm_tree_node *node, | |
2502 | uint64_t size, | |
2503 | const char *origin_uuid, | |
2504 | const char *cow_uuid, | |
2505 | int persistent, | |
2506 | uint32_t chunk_size) | |
2507 | { | |
2508 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2509 | NULL, persistent, chunk_size); | |
2510 | } | |
2511 | ||
2512 | int dm_tree_node_add_snapshot_merge_target(struct dm_tree_node *node, | |
2513 | uint64_t size, | |
2514 | const char *origin_uuid, | |
2515 | const char *cow_uuid, | |
2516 | const char *merge_uuid, | |
2517 | uint32_t chunk_size) | |
2518 | { | |
2519 | return _add_snapshot_target(node, size, origin_uuid, cow_uuid, | |
2520 | merge_uuid, 1, chunk_size); | |
2521 | } | |
2522 | ||
b4f1578f | 2523 | int dm_tree_node_add_error_target(struct dm_tree_node *node, |
40e5fd8b | 2524 | uint64_t size) |
165e4a11 | 2525 | { |
b4f1578f AK |
2526 | if (!_add_segment(node, SEG_ERROR, size)) |
2527 | return_0; | |
165e4a11 AK |
2528 | |
2529 | return 1; | |
2530 | } | |
2531 | ||
b4f1578f | 2532 | int dm_tree_node_add_zero_target(struct dm_tree_node *node, |
40e5fd8b | 2533 | uint64_t size) |
165e4a11 | 2534 | { |
b4f1578f AK |
2535 | if (!_add_segment(node, SEG_ZERO, size)) |
2536 | return_0; | |
165e4a11 AK |
2537 | |
2538 | return 1; | |
2539 | } | |
2540 | ||
b4f1578f | 2541 | int dm_tree_node_add_linear_target(struct dm_tree_node *node, |
40e5fd8b | 2542 | uint64_t size) |
165e4a11 | 2543 | { |
b4f1578f AK |
2544 | if (!_add_segment(node, SEG_LINEAR, size)) |
2545 | return_0; | |
165e4a11 AK |
2546 | |
2547 | return 1; | |
2548 | } | |
2549 | ||
b4f1578f | 2550 | int dm_tree_node_add_striped_target(struct dm_tree_node *node, |
40e5fd8b AK |
2551 | uint64_t size, |
2552 | uint32_t stripe_size) | |
165e4a11 AK |
2553 | { |
2554 | struct load_segment *seg; | |
2555 | ||
b4f1578f AK |
2556 | if (!(seg = _add_segment(node, SEG_STRIPED, size))) |
2557 | return_0; | |
165e4a11 AK |
2558 | |
2559 | seg->stripe_size = stripe_size; | |
2560 | ||
2561 | return 1; | |
2562 | } | |
2563 | ||
12ca060e MB |
2564 | int dm_tree_node_add_crypt_target(struct dm_tree_node *node, |
2565 | uint64_t size, | |
2566 | const char *cipher, | |
2567 | const char *chainmode, | |
2568 | const char *iv, | |
2569 | uint64_t iv_offset, | |
2570 | const char *key) | |
2571 | { | |
2572 | struct load_segment *seg; | |
2573 | ||
2574 | if (!(seg = _add_segment(node, SEG_CRYPT, size))) | |
2575 | return_0; | |
2576 | ||
2577 | seg->cipher = cipher; | |
2578 | seg->chainmode = chainmode; | |
2579 | seg->iv = iv; | |
2580 | seg->iv_offset = iv_offset; | |
2581 | seg->key = key; | |
2582 | ||
2583 | return 1; | |
2584 | } | |
2585 | ||
b4f1578f | 2586 | int dm_tree_node_add_mirror_target_log(struct dm_tree_node *node, |
165e4a11 | 2587 | uint32_t region_size, |
08e64ce5 | 2588 | unsigned clustered, |
165e4a11 | 2589 | const char *log_uuid, |
ce7ed2c0 AK |
2590 | unsigned area_count, |
2591 | uint32_t flags) | |
165e4a11 | 2592 | { |
908db078 | 2593 | struct dm_tree_node *log_node = NULL; |
165e4a11 AK |
2594 | struct load_segment *seg; |
2595 | ||
2596 | if (!node->props.segment_count) { | |
b8175c33 | 2597 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
2598 | return 0; |
2599 | } | |
2600 | ||
2c44337b | 2601 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 2602 | |
24b026e3 | 2603 | if (log_uuid) { |
67b25ed4 AK |
2604 | if (!(seg->uuid = dm_pool_strdup(node->dtree->mem, log_uuid))) { |
2605 | log_error("log uuid pool_strdup failed"); | |
2606 | return 0; | |
2607 | } | |
df390f17 AK |
2608 | if ((flags & DM_CORELOG)) |
2609 | /* For pvmove: immediate resume (for size validation) isn't needed. */ | |
2610 | node->props.delay_resume_if_new = 1; | |
2611 | else { | |
9723090c AK |
2612 | if (!(log_node = dm_tree_find_node_by_uuid(node->dtree, log_uuid))) { |
2613 | log_error("Couldn't find mirror log uuid %s.", log_uuid); | |
2614 | return 0; | |
2615 | } | |
2616 | ||
566515c0 PR |
2617 | if (clustered) |
2618 | log_node->props.immediate_dev_node = 1; | |
2619 | ||
0a99713e AK |
2620 | /* The kernel validates the size of disk logs. */ |
2621 | /* FIXME Propagate to any devices below */ | |
2622 | log_node->props.delay_resume_if_new = 0; | |
2623 | ||
9723090c AK |
2624 | if (!_link_tree_nodes(node, log_node)) |
2625 | return_0; | |
2626 | } | |
165e4a11 AK |
2627 | } |
2628 | ||
2629 | seg->log = log_node; | |
165e4a11 AK |
2630 | seg->region_size = region_size; |
2631 | seg->clustered = clustered; | |
2632 | seg->mirror_area_count = area_count; | |
dbcb64b8 | 2633 | seg->flags = flags; |
165e4a11 AK |
2634 | |
2635 | return 1; | |
2636 | } | |
2637 | ||
b4f1578f | 2638 | int dm_tree_node_add_mirror_target(struct dm_tree_node *node, |
40e5fd8b | 2639 | uint64_t size) |
165e4a11 | 2640 | { |
cbecd3cd | 2641 | if (!_add_segment(node, SEG_MIRRORED, size)) |
b4f1578f | 2642 | return_0; |
165e4a11 AK |
2643 | |
2644 | return 1; | |
2645 | } | |
2646 | ||
cac52ca4 JEB |
2647 | int dm_tree_node_add_raid_target(struct dm_tree_node *node, |
2648 | uint64_t size, | |
2649 | const char *raid_type, | |
2650 | uint32_t region_size, | |
2651 | uint32_t stripe_size, | |
f439e65b | 2652 | uint64_t rebuilds, |
cac52ca4 JEB |
2653 | uint64_t reserved2) |
2654 | { | |
2655 | int i; | |
2656 | struct load_segment *seg = NULL; | |
2657 | ||
2658 | for (i = 0; dm_segtypes[i].target && !seg; i++) | |
2659 | if (!strcmp(raid_type, dm_segtypes[i].target)) | |
2660 | if (!(seg = _add_segment(node, | |
2661 | dm_segtypes[i].type, size))) | |
2662 | return_0; | |
2663 | ||
b2fa9b43 JEB |
2664 | if (!seg) |
2665 | return_0; | |
2666 | ||
cac52ca4 JEB |
2667 | seg->region_size = region_size; |
2668 | seg->stripe_size = stripe_size; | |
2669 | seg->area_count = 0; | |
f439e65b | 2670 | seg->rebuilds = rebuilds; |
cac52ca4 JEB |
2671 | |
2672 | return 1; | |
2673 | } | |
2674 | ||
b262f3e1 ZK |
2675 | int dm_tree_node_add_replicator_target(struct dm_tree_node *node, |
2676 | uint64_t size, | |
2677 | const char *rlog_uuid, | |
2678 | const char *rlog_type, | |
2679 | unsigned rsite_index, | |
2680 | dm_replicator_mode_t mode, | |
2681 | uint32_t async_timeout, | |
2682 | uint64_t fall_behind_data, | |
2683 | uint32_t fall_behind_ios) | |
2684 | { | |
2685 | struct load_segment *rseg; | |
2686 | struct replicator_site *rsite; | |
2687 | ||
2688 | /* Local site0 - adds replicator segment and links rlog device */ | |
2689 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2690 | if (node->props.segment_count) { | |
2691 | log_error(INTERNAL_ERROR "Attempt to add replicator segment to already used node."); | |
2692 | return 0; | |
2693 | } | |
2694 | ||
2695 | if (!(rseg = _add_segment(node, SEG_REPLICATOR, size))) | |
2696 | return_0; | |
2697 | ||
2698 | if (!(rseg->log = dm_tree_find_node_by_uuid(node->dtree, rlog_uuid))) { | |
2699 | log_error("Missing replicator log uuid %s.", rlog_uuid); | |
2700 | return 0; | |
2701 | } | |
2702 | ||
2703 | if (!_link_tree_nodes(node, rseg->log)) | |
2704 | return_0; | |
2705 | ||
2706 | if (strcmp(rlog_type, "ringbuffer") != 0) { | |
2707 | log_error("Unsupported replicator log type %s.", rlog_type); | |
2708 | return 0; | |
2709 | } | |
2710 | ||
2711 | if (!(rseg->rlog_type = dm_pool_strdup(node->dtree->mem, rlog_type))) | |
2712 | return_0; | |
2713 | ||
2714 | dm_list_init(&rseg->rsites); | |
2715 | rseg->rdevice_count = 0; | |
2716 | node->activation_priority = 1; | |
2717 | } | |
2718 | ||
2719 | /* Add site to segment */ | |
2720 | if (mode == DM_REPLICATOR_SYNC | |
2721 | && (async_timeout || fall_behind_ios || fall_behind_data)) { | |
2722 | log_error("Async parameters passed for synchronnous replicator."); | |
2723 | return 0; | |
2724 | } | |
2725 | ||
2726 | if (node->props.segment_count != 1) { | |
2727 | log_error(INTERNAL_ERROR "Attempt to add remote site area before setting replicator log."); | |
2728 | return 0; | |
2729 | } | |
2730 | ||
2731 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2732 | if (rseg->type != SEG_REPLICATOR) { | |
2733 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2734 | dm_segtypes[rseg->type].target); | |
2735 | return 0; | |
2736 | } | |
2737 | ||
2738 | if (!(rsite = dm_pool_zalloc(node->dtree->mem, sizeof(*rsite)))) { | |
2739 | log_error("Failed to allocate remote site segment."); | |
2740 | return 0; | |
2741 | } | |
2742 | ||
2743 | dm_list_add(&rseg->rsites, &rsite->list); | |
2744 | rseg->rsite_count++; | |
2745 | ||
2746 | rsite->mode = mode; | |
2747 | rsite->async_timeout = async_timeout; | |
2748 | rsite->fall_behind_data = fall_behind_data; | |
2749 | rsite->fall_behind_ios = fall_behind_ios; | |
2750 | rsite->rsite_index = rsite_index; | |
2751 | ||
2752 | return 1; | |
2753 | } | |
2754 | ||
2755 | /* Appends device node to Replicator */ | |
2756 | int dm_tree_node_add_replicator_dev_target(struct dm_tree_node *node, | |
2757 | uint64_t size, | |
2758 | const char *replicator_uuid, | |
2759 | uint64_t rdevice_index, | |
2760 | const char *rdev_uuid, | |
2761 | unsigned rsite_index, | |
2762 | const char *slog_uuid, | |
2763 | uint32_t slog_flags, | |
2764 | uint32_t slog_region_size) | |
2765 | { | |
2766 | struct seg_area *area; | |
2767 | struct load_segment *rseg; | |
2768 | struct load_segment *rep_seg; | |
2769 | ||
2770 | if (rsite_index == REPLICATOR_LOCAL_SITE) { | |
2771 | /* Site index for local target */ | |
2772 | if (!(rseg = _add_segment(node, SEG_REPLICATOR_DEV, size))) | |
2773 | return_0; | |
2774 | ||
2775 | if (!(rseg->replicator = dm_tree_find_node_by_uuid(node->dtree, replicator_uuid))) { | |
2776 | log_error("Missing replicator uuid %s.", replicator_uuid); | |
2777 | return 0; | |
2778 | } | |
2779 | ||
2780 | /* Local slink0 for replicator must be always initialized first */ | |
2781 | if (rseg->replicator->props.segment_count != 1) { | |
2782 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment."); | |
2783 | return 0; | |
2784 | } | |
2785 | ||
2786 | rep_seg = dm_list_item(dm_list_last(&rseg->replicator->props.segs), struct load_segment); | |
2787 | if (rep_seg->type != SEG_REPLICATOR) { | |
2788 | log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.", | |
2789 | dm_segtypes[rep_seg->type].target); | |
2790 | return 0; | |
2791 | } | |
2792 | rep_seg->rdevice_count++; | |
2793 | ||
2794 | if (!_link_tree_nodes(node, rseg->replicator)) | |
2795 | return_0; | |
2796 | ||
2797 | rseg->rdevice_index = rdevice_index; | |
2798 | } else { | |
2799 | /* Local slink0 for replicator must be always initialized first */ | |
2800 | if (node->props.segment_count != 1) { | |
2801 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment."); | |
2802 | return 0; | |
2803 | } | |
2804 | ||
2805 | rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
2806 | if (rseg->type != SEG_REPLICATOR_DEV) { | |
2807 | log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment %s.", | |
2808 | dm_segtypes[rseg->type].target); | |
2809 | return 0; | |
2810 | } | |
2811 | } | |
2812 | ||
2813 | if (!(slog_flags & DM_CORELOG) && !slog_uuid) { | |
2814 | log_error("Unspecified sync log uuid."); | |
2815 | return 0; | |
2816 | } | |
2817 | ||
2818 | if (!dm_tree_node_add_target_area(node, NULL, rdev_uuid, 0)) | |
2819 | return_0; | |
2820 | ||
2821 | area = dm_list_item(dm_list_last(&rseg->areas), struct seg_area); | |
2822 | ||
2823 | if (!(slog_flags & DM_CORELOG)) { | |
2824 | if (!(area->slog = dm_tree_find_node_by_uuid(node->dtree, slog_uuid))) { | |
2825 | log_error("Couldn't find sync log uuid %s.", slog_uuid); | |
2826 | return 0; | |
2827 | } | |
2828 | ||
2829 | if (!_link_tree_nodes(node, area->slog)) | |
2830 | return_0; | |
2831 | } | |
2832 | ||
2833 | area->flags = slog_flags; | |
2834 | area->region_size = slog_region_size; | |
2835 | area->rsite_index = rsite_index; | |
2836 | ||
2837 | return 1; | |
2838 | } | |
2839 | ||
5668fe04 ZK |
2840 | static int _thin_validate_device_id(uint32_t device_id) |
2841 | { | |
2842 | if (device_id > DM_THIN_MAX_DEVICE_ID) { | |
2843 | log_error("Device id %u is higher then %u.", | |
2844 | device_id, DM_THIN_MAX_DEVICE_ID); | |
2845 | return 0; | |
2846 | } | |
2847 | ||
2848 | return 1; | |
2849 | } | |
2850 | ||
4251236e ZK |
2851 | int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node, |
2852 | uint64_t size, | |
e0ea24be | 2853 | uint64_t transaction_id, |
4251236e | 2854 | const char *metadata_uuid, |
5668fd6a | 2855 | const char *pool_uuid, |
4251236e | 2856 | uint32_t data_block_size, |
e9156c2b | 2857 | uint64_t low_water_mark, |
460c5991 | 2858 | unsigned skip_block_zeroing) |
4251236e ZK |
2859 | { |
2860 | struct load_segment *seg; | |
2861 | ||
3f53c059 | 2862 | if (data_block_size < DM_THIN_MIN_DATA_BLOCK_SIZE) { |
565a4bfc | 2863 | log_error("Data block size %u is lower then %u sectors.", |
3f53c059 | 2864 | data_block_size, DM_THIN_MIN_DATA_BLOCK_SIZE); |
4251236e ZK |
2865 | return 0; |
2866 | } | |
2867 | ||
3f53c059 | 2868 | if (data_block_size > DM_THIN_MAX_DATA_BLOCK_SIZE) { |
565a4bfc | 2869 | log_error("Data block size %u is higher then %u sectors.", |
3f53c059 | 2870 | data_block_size, DM_THIN_MAX_DATA_BLOCK_SIZE); |
4251236e ZK |
2871 | return 0; |
2872 | } | |
2873 | ||
2874 | if (!(seg = _add_segment(node, SEG_THIN_POOL, size))) | |
2875 | return_0; | |
2876 | ||
2877 | if (!(seg->metadata = dm_tree_find_node_by_uuid(node->dtree, metadata_uuid))) { | |
2878 | log_error("Missing metadata uuid %s.", metadata_uuid); | |
2879 | return 0; | |
2880 | } | |
2881 | ||
2882 | if (!_link_tree_nodes(node, seg->metadata)) | |
2883 | return_0; | |
2884 | ||
2885 | if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) { | |
2886 | log_error("Missing pool uuid %s.", pool_uuid); | |
2887 | return 0; | |
2888 | } | |
2889 | ||
2890 | if (!_link_tree_nodes(node, seg->pool)) | |
2891 | return_0; | |
2892 | ||
bbcd37e4 ZK |
2893 | node->props.send_messages = 1; |
2894 | seg->transaction_id = transaction_id; | |
e9156c2b | 2895 | seg->low_water_mark = low_water_mark; |
e0ea24be | 2896 | seg->data_block_size = data_block_size; |
460c5991 | 2897 | seg->skip_block_zeroing = skip_block_zeroing; |
25e6ab87 ZK |
2898 | dm_list_init(&seg->thin_messages); |
2899 | ||
2900 | return 1; | |
2901 | } | |
2902 | ||
2903 | int dm_tree_node_add_thin_pool_message(struct dm_tree_node *node, | |
7b199dc5 | 2904 | const struct dm_thin_message *message) |
25e6ab87 ZK |
2905 | { |
2906 | struct load_segment *seg; | |
2907 | struct thin_message *tm; | |
2908 | ||
2909 | if (node->props.segment_count != 1) { | |
759b9592 | 2910 | log_error("Thin pool node must have only one segment."); |
25e6ab87 ZK |
2911 | return 0; |
2912 | } | |
2913 | ||
2914 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
25e6ab87 | 2915 | if (seg->type != SEG_THIN_POOL) { |
759b9592 | 2916 | log_error("Thin pool node has segment type %s.", |
25e6ab87 ZK |
2917 | dm_segtypes[seg->type].target); |
2918 | return 0; | |
2919 | } | |
2920 | ||
2921 | if (!(tm = dm_pool_zalloc(node->dtree->mem, sizeof (*tm)))) { | |
2922 | log_error("Failed to allocate thin message."); | |
2923 | return 0; | |
2924 | } | |
2925 | ||
2926 | switch (message->type) { | |
2927 | case DM_THIN_MESSAGE_CREATE_SNAP: | |
759b9592 | 2928 | /* If the thin origin is active, it must be suspend first! */ |
25e6ab87 | 2929 | if (message->u.m_create_snap.device_id == message->u.m_create_snap.origin_id) { |
759b9592 | 2930 | log_error("Cannot use same device id for origin and its snapshot."); |
25e6ab87 ZK |
2931 | return 0; |
2932 | } | |
2933 | if (!_thin_validate_device_id(message->u.m_create_snap.device_id) || | |
2934 | !_thin_validate_device_id(message->u.m_create_snap.origin_id)) | |
2935 | return_0; | |
2a0d806b | 2936 | tm->message.u.m_create_snap = message->u.m_create_snap; |
25e6ab87 ZK |
2937 | break; |
2938 | case DM_THIN_MESSAGE_CREATE_THIN: | |
2939 | if (!_thin_validate_device_id(message->u.m_create_thin.device_id)) | |
2940 | return_0; | |
2a0d806b | 2941 | tm->message.u.m_create_thin = message->u.m_create_thin; |
660a42bc | 2942 | tm->expected_errno = EEXIST; |
25e6ab87 ZK |
2943 | break; |
2944 | case DM_THIN_MESSAGE_DELETE: | |
2945 | if (!_thin_validate_device_id(message->u.m_delete.device_id)) | |
2946 | return_0; | |
2a0d806b | 2947 | tm->message.u.m_delete = message->u.m_delete; |
660a42bc | 2948 | tm->expected_errno = ENODATA; |
25e6ab87 ZK |
2949 | break; |
2950 | case DM_THIN_MESSAGE_TRIM: | |
2951 | if (!_thin_validate_device_id(message->u.m_trim.device_id)) | |
2952 | return_0; | |
2a0d806b | 2953 | tm->message.u.m_trim = message->u.m_trim; |
25e6ab87 ZK |
2954 | break; |
2955 | case DM_THIN_MESSAGE_SET_TRANSACTION_ID: | |
2956 | if (message->u.m_set_transaction_id.current_id != | |
2957 | (message->u.m_set_transaction_id.new_id - 1)) { | |
2958 | log_error("New transaction_id must be sequential."); | |
2959 | return 0; /* FIXME: Maybe too strict here? */ | |
2960 | } | |
2a0d806b | 2961 | tm->message.u.m_set_transaction_id = message->u.m_set_transaction_id; |
25e6ab87 ZK |
2962 | break; |
2963 | default: | |
2964 | log_error("Unsupported message type %d.", (int) message->type); | |
2965 | return 0; | |
2966 | } | |
2967 | ||
2968 | tm->message.type = message->type; | |
2969 | dm_list_add(&seg->thin_messages, &tm->list); | |
4251236e ZK |
2970 | |
2971 | return 1; | |
2972 | } | |
2973 | ||
2974 | int dm_tree_node_add_thin_target(struct dm_tree_node *node, | |
2975 | uint64_t size, | |
4251236e ZK |
2976 | const char *thin_pool_uuid, |
2977 | uint32_t device_id) | |
2978 | { | |
2979 | struct load_segment *seg; | |
2980 | ||
5668fe04 ZK |
2981 | if (!_thin_validate_device_id(device_id)) |
2982 | return_0; | |
4251236e ZK |
2983 | |
2984 | if (!(seg = _add_segment(node, SEG_THIN, size))) | |
2985 | return_0; | |
2986 | ||
2987 | if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, thin_pool_uuid))) { | |
2988 | log_error("Missing thin pool uuid %s.", thin_pool_uuid); | |
2989 | return 0; | |
2990 | } | |
2991 | ||
2992 | if (!_link_tree_nodes(node, seg->pool)) | |
2993 | return_0; | |
2994 | ||
1419bf1c ZK |
2995 | seg->device_id = device_id; |
2996 | ||
4251236e ZK |
2997 | return 1; |
2998 | } | |
2999 | ||
b4f1578f | 3000 | static int _add_area(struct dm_tree_node *node, struct load_segment *seg, struct dm_tree_node *dev_node, uint64_t offset) |
165e4a11 AK |
3001 | { |
3002 | struct seg_area *area; | |
3003 | ||
b4f1578f | 3004 | if (!(area = dm_pool_zalloc(node->dtree->mem, sizeof (*area)))) { |
165e4a11 AK |
3005 | log_error("Failed to allocate target segment area."); |
3006 | return 0; | |
3007 | } | |
3008 | ||
3009 | area->dev_node = dev_node; | |
3010 | area->offset = offset; | |
3011 | ||
2c44337b | 3012 | dm_list_add(&seg->areas, &area->list); |
165e4a11 AK |
3013 | seg->area_count++; |
3014 | ||
3015 | return 1; | |
3016 | } | |
3017 | ||
b4f1578f | 3018 | int dm_tree_node_add_target_area(struct dm_tree_node *node, |
40e5fd8b AK |
3019 | const char *dev_name, |
3020 | const char *uuid, | |
3021 | uint64_t offset) | |
165e4a11 AK |
3022 | { |
3023 | struct load_segment *seg; | |
3024 | struct stat info; | |
b4f1578f | 3025 | struct dm_tree_node *dev_node; |
165e4a11 AK |
3026 | |
3027 | if ((!dev_name || !*dev_name) && (!uuid || !*uuid)) { | |
b4f1578f | 3028 | log_error("dm_tree_node_add_target_area called without device"); |
165e4a11 AK |
3029 | return 0; |
3030 | } | |
3031 | ||
3032 | if (uuid) { | |
b4f1578f | 3033 | if (!(dev_node = dm_tree_find_node_by_uuid(node->dtree, uuid))) { |
165e4a11 AK |
3034 | log_error("Couldn't find area uuid %s.", uuid); |
3035 | return 0; | |
3036 | } | |
b4f1578f AK |
3037 | if (!_link_tree_nodes(node, dev_node)) |
3038 | return_0; | |
165e4a11 | 3039 | } else { |
6d04311e | 3040 | if (stat(dev_name, &info) < 0) { |
165e4a11 AK |
3041 | log_error("Device %s not found.", dev_name); |
3042 | return 0; | |
3043 | } | |
3044 | ||
40e5fd8b | 3045 | if (!S_ISBLK(info.st_mode)) { |
165e4a11 AK |
3046 | log_error("Device %s is not a block device.", dev_name); |
3047 | return 0; | |
3048 | } | |
3049 | ||
3050 | /* FIXME Check correct macro use */ | |
cda69e17 PR |
3051 | if (!(dev_node = _add_dev(node->dtree, node, MAJOR(info.st_rdev), |
3052 | MINOR(info.st_rdev), 0))) | |
b4f1578f | 3053 | return_0; |
165e4a11 AK |
3054 | } |
3055 | ||
3056 | if (!node->props.segment_count) { | |
b8175c33 | 3057 | log_error(INTERNAL_ERROR "Attempt to add target area to missing segment."); |
165e4a11 AK |
3058 | return 0; |
3059 | } | |
3060 | ||
2c44337b | 3061 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); |
165e4a11 | 3062 | |
b4f1578f AK |
3063 | if (!_add_area(node, seg, dev_node, offset)) |
3064 | return_0; | |
165e4a11 AK |
3065 | |
3066 | return 1; | |
db208f51 | 3067 | } |
bd90c6b2 | 3068 | |
6d04311e JEB |
3069 | int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset) |
3070 | { | |
3071 | struct load_segment *seg; | |
3072 | ||
3073 | seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); | |
3074 | ||
415c0690 AK |
3075 | switch (seg->type) { |
3076 | case SEG_RAID1: | |
3077 | case SEG_RAID4: | |
3078 | case SEG_RAID5_LA: | |
3079 | case SEG_RAID5_RA: | |
3080 | case SEG_RAID5_LS: | |
3081 | case SEG_RAID5_RS: | |
3082 | case SEG_RAID6_ZR: | |
3083 | case SEG_RAID6_NR: | |
3084 | case SEG_RAID6_NC: | |
3085 | break; | |
3086 | default: | |
3087 | log_error("dm_tree_node_add_null_area() called on an unsupported segment type"); | |
3088 | return 0; | |
3089 | } | |
3090 | ||
6d04311e JEB |
3091 | if (!_add_area(node, seg, NULL, offset)) |
3092 | return_0; | |
3093 | ||
3094 | return 1; | |
3095 | } | |
3096 | ||
bd90c6b2 AK |
3097 | void dm_tree_set_cookie(struct dm_tree_node *node, uint32_t cookie) |
3098 | { | |
3099 | node->dtree->cookie = cookie; | |
3100 | } | |
3101 | ||
3102 | uint32_t dm_tree_get_cookie(struct dm_tree_node *node) | |
3103 | { | |
3104 | return node->dtree->cookie; | |
3105 | } |