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Commit | Line | Data |
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b1713d28 | 1 | /* |
67cdbd7e | 2 | * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. |
c8669f6b | 3 | * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved. |
b1713d28 | 4 | * |
6606c3ae AK |
5 | * This file is part of LVM2. |
6 | * | |
7 | * This copyrighted material is made available to anyone wishing to use, | |
8 | * modify, copy, or redistribute it subject to the terms and conditions | |
be684599 | 9 | * of the GNU Lesser General Public License v.2.1. |
6606c3ae | 10 | * |
be684599 | 11 | * You should have received a copy of the GNU Lesser General Public License |
6606c3ae AK |
12 | * along with this program; if not, write to the Free Software Foundation, |
13 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
b1713d28 JT |
14 | */ |
15 | ||
d1d9800e | 16 | #include "lib.h" |
a381c45a | 17 | #include "metadata.h" |
b1713d28 | 18 | #include "activate.h" |
914c9723 | 19 | #include "memlock.h" |
78125be9 | 20 | #include "display.h" |
f7a14956 | 21 | #include "fs.h" |
f894b4b1 | 22 | #include "lvm-exec.h" |
7d1552c9 | 23 | #include "lvm-file.h" |
41b2fd5f | 24 | #include "lvm-string.h" |
413cc918 | 25 | #include "toolcontext.h" |
de6c9183 | 26 | #include "dev_manager.h" |
de17d760 | 27 | #include "str_list.h" |
4922197a | 28 | #include "config.h" |
352a99b9 | 29 | #include "filter.h" |
15d91f5a | 30 | #include "segtype.h" |
d1e8046f | 31 | #include "sharedlib.h" |
12137231 JT |
32 | |
33 | #include <limits.h> | |
5986ec94 | 34 | #include <fcntl.h> |
914c9723 | 35 | #include <unistd.h> |
12137231 | 36 | |
6d52fb46 | 37 | #define _skip(fmt, args...) log_very_verbose("Skipping: " fmt , ## args) |
b1713d28 | 38 | |
7d1552c9 AK |
39 | int lvm1_present(struct cmd_context *cmd) |
40 | { | |
41 | char path[PATH_MAX]; | |
42 | ||
0550c1b6 | 43 | if (dm_snprintf(path, sizeof(path), "%s/lvm/global", cmd->proc_dir) |
7d1552c9 AK |
44 | < 0) { |
45 | log_error("LVM1 proc global snprintf failed"); | |
46 | return 0; | |
47 | } | |
48 | ||
49 | if (path_exists(path)) | |
50 | return 1; | |
51 | else | |
52 | return 0; | |
53 | } | |
54 | ||
6c81ed26 | 55 | int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg, |
2c44337b | 56 | struct dm_list *modules) |
6c81ed26 AK |
57 | { |
58 | unsigned int s; | |
59 | struct lv_segment *seg2, *snap_seg; | |
2c44337b | 60 | struct dm_list *snh; |
6c81ed26 AK |
61 | |
62 | if (seg->segtype->ops->modules_needed && | |
63 | !seg->segtype->ops->modules_needed(mem, seg, modules)) { | |
64 | log_error("module string allocation failed"); | |
65 | return 0; | |
66 | } | |
67 | ||
68 | if (lv_is_origin(seg->lv)) | |
2c44337b | 69 | dm_list_iterate(snh, &seg->lv->snapshot_segs) |
6c81ed26 | 70 | if (!list_lv_modules(mem, |
2c44337b | 71 | dm_list_struct_base(snh, |
6c81ed26 AK |
72 | struct lv_segment, |
73 | origin_list)->cow, | |
74 | modules)) | |
75 | return_0; | |
76 | ||
77 | if (lv_is_cow(seg->lv)) { | |
78 | snap_seg = find_cow(seg->lv); | |
79 | if (snap_seg->segtype->ops->modules_needed && | |
80 | !snap_seg->segtype->ops->modules_needed(mem, snap_seg, | |
81 | modules)) { | |
82 | log_error("snap_seg module string allocation failed"); | |
83 | return 0; | |
84 | } | |
85 | } | |
86 | ||
87 | for (s = 0; s < seg->area_count; s++) { | |
88 | switch (seg_type(seg, s)) { | |
89 | case AREA_LV: | |
90 | seg2 = find_seg_by_le(seg_lv(seg, s), seg_le(seg, s)); | |
91 | if (seg2 && !list_segment_modules(mem, seg2, modules)) | |
92 | return_0; | |
93 | break; | |
94 | case AREA_PV: | |
95 | case AREA_UNASSIGNED: | |
96 | ; | |
97 | } | |
98 | } | |
99 | ||
100 | return 1; | |
101 | } | |
102 | ||
103 | int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv, | |
2c44337b | 104 | struct dm_list *modules) |
6c81ed26 AK |
105 | { |
106 | struct lv_segment *seg; | |
107 | ||
2c44337b | 108 | dm_list_iterate_items(seg, &lv->segments) |
6c81ed26 AK |
109 | if (!list_segment_modules(mem, seg, modules)) |
110 | return_0; | |
111 | ||
112 | return 1; | |
113 | } | |
114 | ||
199e490e AK |
115 | #ifndef DEVMAPPER_SUPPORT |
116 | void set_activation(int act) | |
117 | { | |
f2046e0a AK |
118 | static int warned = 0; |
119 | ||
120 | if (warned || !act) | |
121 | return; | |
122 | ||
123 | log_error("Compiled without libdevmapper support. " | |
124 | "Can't enable activation."); | |
125 | ||
126 | warned = 1; | |
199e490e AK |
127 | } |
128 | int activation(void) | |
129 | { | |
130 | return 0; | |
131 | } | |
132 | int library_version(char *version, size_t size) | |
133 | { | |
134 | return 0; | |
135 | } | |
136 | int driver_version(char *version, size_t size) | |
137 | { | |
138 | return 0; | |
139 | } | |
bbf83db1 AK |
140 | int target_version(const char *target_name, uint32_t *maj, |
141 | uint32_t *min, uint32_t *patchlevel) | |
142 | { | |
143 | return 0; | |
144 | } | |
ed82bfd2 AK |
145 | int target_present(struct cmd_context *cmd, const char *target_name, |
146 | int use_modprobe) | |
d1f4953a AK |
147 | { |
148 | return 0; | |
149 | } | |
2d6fcbf6 AK |
150 | int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, unsigned origin_only, |
151 | struct lvinfo *info, int with_open_count, int with_read_ahead) | |
199e490e AK |
152 | { |
153 | return 0; | |
154 | } | |
4bd9480d | 155 | int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 156 | unsigned origin_only, |
a6b22cf3 | 157 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
4bd9480d AK |
158 | { |
159 | return 0; | |
160 | } | |
8191fe4f | 161 | int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent) |
199e490e AK |
162 | { |
163 | return 0; | |
164 | } | |
472ac5bd | 165 | int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, |
8191fe4f | 166 | int wait, percent_t *percent, uint32_t *event_nr) |
10b29b8d AK |
167 | { |
168 | return 0; | |
169 | } | |
199e490e AK |
170 | int lvs_in_vg_activated(struct volume_group *vg) |
171 | { | |
172 | return 0; | |
173 | } | |
174 | int lvs_in_vg_opened(struct volume_group *vg) | |
175 | { | |
176 | return 0; | |
177 | } | |
2d6fcbf6 | 178 | /****** |
658b5812 AK |
179 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
180 | { | |
181 | return 1; | |
182 | } | |
2d6fcbf6 | 183 | *******/ |
199e490e AK |
184 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s) |
185 | { | |
186 | return 1; | |
187 | } | |
658b5812 AK |
188 | int lv_resume(struct cmd_context *cmd, const char *lvid_s) |
189 | { | |
190 | return 1; | |
191 | } | |
199e490e AK |
192 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s) |
193 | { | |
194 | return 1; | |
195 | } | |
196 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) | |
197 | { | |
198 | return 1; | |
199 | } | |
658b5812 AK |
200 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, |
201 | int *activate_lv) | |
202 | { | |
203 | return 1; | |
204 | } | |
07d31831 | 205 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
199e490e AK |
206 | { |
207 | return 1; | |
208 | } | |
07d31831 | 209 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 AK |
210 | { |
211 | return 1; | |
212 | } | |
f7dd6d84 AK |
213 | |
214 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) | |
215 | { | |
216 | return 1; | |
217 | } | |
218 | ||
0ce83a83 | 219 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 220 | struct volume_group *vg) |
352a99b9 AK |
221 | { |
222 | return 0; | |
223 | } | |
224 | ||
2293567c AK |
225 | void activation_release(void) |
226 | { | |
227 | return; | |
228 | } | |
229 | ||
914c9723 AK |
230 | void activation_exit(void) |
231 | { | |
232 | return; | |
233 | } | |
199e490e AK |
234 | |
235 | #else /* DEVMAPPER_SUPPORT */ | |
236 | ||
d1d9800e AK |
237 | static int _activation = 1; |
238 | ||
8ef2b021 | 239 | void set_activation(int act) |
d1d9800e | 240 | { |
8ef2b021 | 241 | if (act == _activation) |
d1d9800e AK |
242 | return; |
243 | ||
8ef2b021 | 244 | _activation = act; |
d1d9800e AK |
245 | if (_activation) |
246 | log_verbose("Activation enabled. Device-mapper kernel " | |
247 | "driver will be used."); | |
248 | else | |
e7ddf416 | 249 | log_warn("WARNING: Activation disabled. No device-mapper " |
bfe2b548 | 250 | "interaction will be attempted."); |
d1d9800e AK |
251 | } |
252 | ||
8ef2b021 | 253 | int activation(void) |
d1d9800e AK |
254 | { |
255 | return _activation; | |
256 | } | |
257 | ||
de17d760 AK |
258 | static int _passes_activation_filter(struct cmd_context *cmd, |
259 | struct logical_volume *lv) | |
260 | { | |
25579907 | 261 | const struct config_node *cn; |
760d1fac ZK |
262 | const struct config_value *cv; |
263 | const char *str; | |
de17d760 AK |
264 | char path[PATH_MAX]; |
265 | ||
2293567c | 266 | if (!(cn = find_config_tree_node(cmd, "activation/volume_list"))) { |
fefa4323 | 267 | log_verbose("activation/volume_list configuration setting " |
3122f963 PR |
268 | "not defined, checking only host tags for %s/%s", |
269 | lv->vg->name, lv->name); | |
fefa4323 | 270 | |
25579907 | 271 | /* If no host tags defined, activate */ |
2c44337b | 272 | if (dm_list_empty(&cmd->tags)) |
de17d760 AK |
273 | return 1; |
274 | ||
275 | /* If any host tag matches any LV or VG tag, activate */ | |
eb82bd05 AK |
276 | if (str_list_match_list(&cmd->tags, &lv->tags, NULL) || |
277 | str_list_match_list(&cmd->tags, &lv->vg->tags, NULL)) | |
de17d760 AK |
278 | return 1; |
279 | ||
fefa4323 PR |
280 | log_verbose("No host tag matches %s/%s", |
281 | lv->vg->name, lv->name); | |
282 | ||
de17d760 AK |
283 | /* Don't activate */ |
284 | return 0; | |
285 | } | |
f7e3a19f | 286 | else |
fefa4323 PR |
287 | log_verbose("activation/volume_list configuration setting " |
288 | "defined, checking the list to match %s/%s", | |
289 | lv->vg->name, lv->name); | |
290 | ||
f7e3a19f | 291 | for (cv = cn->v; cv; cv = cv->next) { |
de17d760 AK |
292 | if (cv->type != CFG_STRING) { |
293 | log_error("Ignoring invalid string in config file " | |
294 | "activation/volume_list"); | |
295 | continue; | |
296 | } | |
297 | str = cv->v.str; | |
298 | if (!*str) { | |
299 | log_error("Ignoring empty string in config file " | |
300 | "activation/volume_list"); | |
301 | continue; | |
302 | } | |
303 | ||
f7e3a19f | 304 | |
de17d760 AK |
305 | /* Tag? */ |
306 | if (*str == '@') { | |
307 | str++; | |
308 | if (!*str) { | |
309 | log_error("Ignoring empty tag in config file " | |
310 | "activation/volume_list"); | |
311 | continue; | |
312 | } | |
313 | /* If any host tag matches any LV or VG tag, activate */ | |
314 | if (!strcmp(str, "*")) { | |
eb82bd05 | 315 | if (str_list_match_list(&cmd->tags, &lv->tags, NULL) |
de17d760 | 316 | || str_list_match_list(&cmd->tags, |
eb82bd05 | 317 | &lv->vg->tags, NULL)) |
de17d760 AK |
318 | return 1; |
319 | else | |
320 | continue; | |
321 | } | |
322 | /* If supplied tag matches LV or VG tag, activate */ | |
323 | if (str_list_match_item(&lv->tags, str) || | |
324 | str_list_match_item(&lv->vg->tags, str)) | |
325 | return 1; | |
326 | else | |
327 | continue; | |
328 | } | |
13835b5f | 329 | if (!strchr(str, '/')) { |
de17d760 AK |
330 | /* vgname supplied */ |
331 | if (!strcmp(str, lv->vg->name)) | |
332 | return 1; | |
333 | else | |
334 | continue; | |
335 | } | |
336 | /* vgname/lvname */ | |
0550c1b6 | 337 | if (dm_snprintf(path, sizeof(path), "%s/%s", lv->vg->name, |
de17d760 | 338 | lv->name) < 0) { |
0550c1b6 | 339 | log_error("dm_snprintf error from %s/%s", lv->vg->name, |
de17d760 AK |
340 | lv->name); |
341 | continue; | |
342 | } | |
343 | if (!strcmp(path, str)) | |
344 | return 1; | |
345 | } | |
346 | ||
fefa4323 PR |
347 | log_verbose("No item supplied in activation/volume_list configuration " |
348 | "setting matches %s/%s", lv->vg->name, lv->name); | |
349 | ||
de17d760 AK |
350 | return 0; |
351 | } | |
352 | ||
fae0c576 AK |
353 | int library_version(char *version, size_t size) |
354 | { | |
d1d9800e AK |
355 | if (!activation()) |
356 | return 0; | |
357 | ||
f894b4b1 | 358 | return dm_get_library_version(version, size); |
fae0c576 AK |
359 | } |
360 | ||
fae0c576 AK |
361 | int driver_version(char *version, size_t size) |
362 | { | |
d1d9800e AK |
363 | if (!activation()) |
364 | return 0; | |
365 | ||
fae0c576 | 366 | log_very_verbose("Getting driver version"); |
fae0c576 | 367 | |
f894b4b1 | 368 | return dm_driver_version(version, size); |
fae0c576 AK |
369 | } |
370 | ||
bbf83db1 AK |
371 | int target_version(const char *target_name, uint32_t *maj, |
372 | uint32_t *min, uint32_t *patchlevel) | |
d1f4953a AK |
373 | { |
374 | int r = 0; | |
375 | struct dm_task *dmt; | |
376 | struct dm_versions *target, *last_target; | |
377 | ||
d1f4953a | 378 | log_very_verbose("Getting target version for %s", target_name); |
5f4b2acf AK |
379 | if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS))) |
380 | return_0; | |
d1f4953a AK |
381 | |
382 | if (!dm_task_run(dmt)) { | |
383 | log_debug("Failed to get %s target version", target_name); | |
384 | /* Assume this was because LIST_VERSIONS isn't supported */ | |
385 | return 1; | |
386 | } | |
387 | ||
388 | target = dm_task_get_versions(dmt); | |
389 | ||
390 | do { | |
391 | last_target = target; | |
392 | ||
393 | if (!strcmp(target_name, target->name)) { | |
394 | r = 1; | |
bbf83db1 AK |
395 | *maj = target->version[0]; |
396 | *min = target->version[1]; | |
397 | *patchlevel = target->version[2]; | |
d1f4953a AK |
398 | goto out; |
399 | } | |
400 | ||
d40d166f | 401 | target = (struct dm_versions *)((char *) target + target->next); |
d1f4953a AK |
402 | } while (last_target != target); |
403 | ||
404 | out: | |
405 | dm_task_destroy(dmt); | |
406 | ||
407 | return r; | |
408 | } | |
409 | ||
ed82bfd2 | 410 | int module_present(struct cmd_context *cmd, const char *target_name) |
f894b4b1 | 411 | { |
5619c629 | 412 | int ret = 0; |
03b49fe1 | 413 | #ifdef MODPROBE_CMD |
f894b4b1 | 414 | char module[128]; |
c8669f6b | 415 | const char *argv[3]; |
5619c629 MB |
416 | |
417 | if (dm_snprintf(module, sizeof(module), "dm-%s", target_name) < 0) { | |
418 | log_error("module_present module name too long: %s", | |
419 | target_name); | |
420 | return 0; | |
421 | } | |
422 | ||
c8669f6b ZK |
423 | argv[0] = MODPROBE_CMD; |
424 | argv[1] = module; | |
425 | argv[2] = NULL; | |
426 | ||
b1b38215 | 427 | ret = exec_cmd(cmd, argv, NULL, 0); |
03b49fe1 | 428 | #endif |
5619c629 MB |
429 | return ret; |
430 | } | |
431 | ||
ed82bfd2 AK |
432 | int target_present(struct cmd_context *cmd, const char *target_name, |
433 | int use_modprobe) | |
5619c629 MB |
434 | { |
435 | uint32_t maj, min, patchlevel; | |
f894b4b1 AK |
436 | |
437 | if (!activation()) | |
438 | return 0; | |
439 | ||
440 | #ifdef MODPROBE_CMD | |
5f4b2acf | 441 | if (use_modprobe) { |
bbf83db1 | 442 | if (target_version(target_name, &maj, &min, &patchlevel)) |
5f4b2acf | 443 | return 1; |
f894b4b1 | 444 | |
ed82bfd2 | 445 | if (!module_present(cmd, target_name)) |
5f4b2acf | 446 | return_0; |
f894b4b1 AK |
447 | } |
448 | #endif | |
449 | ||
bbf83db1 | 450 | return target_version(target_name, &maj, &min, &patchlevel); |
f894b4b1 AK |
451 | } |
452 | ||
de6c9183 JT |
453 | /* |
454 | * Returns 1 if info structure populated, else 0 on failure. | |
455 | */ | |
2d6fcbf6 | 456 | int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, unsigned origin_only, |
ab9663f3 | 457 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
37ed70b9 | 458 | { |
199e490e | 459 | struct dm_info dminfo; |
4a624ca0 | 460 | |
d1d9800e AK |
461 | if (!activation()) |
462 | return 0; | |
56cab8cc ZK |
463 | /* |
464 | * If open_count info is requested and we have to be sure our own udev | |
465 | * transactions are finished | |
466 | * For non-clustered locking type we are only interested for non-delete operation | |
467 | * in progress - as only those could lead to opened files | |
468 | */ | |
469 | if (with_open_count) { | |
470 | if (locking_is_clustered()) | |
471 | sync_local_dev_names(cmd); /* Wait to have udev in sync */ | |
f5f6dcbc | 472 | else if (fs_has_non_delete_ops()) |
56cab8cc ZK |
473 | fs_unlock(); /* For non clustered - wait if there are non-delete ops */ |
474 | } | |
d1d9800e | 475 | |
2d6fcbf6 | 476 | if (!dev_manager_info(lv->vg->cmd->mem, lv, origin_only ? "real" : NULL, with_open_count, |
ab9663f3 | 477 | with_read_ahead, &dminfo, &info->read_ahead)) |
5f4b2acf | 478 | return_0; |
4a624ca0 | 479 | |
199e490e AK |
480 | info->exists = dminfo.exists; |
481 | info->suspended = dminfo.suspended; | |
482 | info->open_count = dminfo.open_count; | |
483 | info->major = dminfo.major; | |
484 | info->minor = dminfo.minor; | |
485 | info->read_only = dminfo.read_only; | |
5f4b2acf AK |
486 | info->live_table = dminfo.live_table; |
487 | info->inactive_table = dminfo.inactive_table; | |
199e490e | 488 | |
f894b4b1 | 489 | return 1; |
de6c9183 | 490 | } |
a62ee8ad | 491 | |
4bd9480d | 492 | int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 493 | unsigned origin_only, |
a6b22cf3 | 494 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
4bd9480d | 495 | { |
0548bcc2 | 496 | int r; |
4bd9480d AK |
497 | struct logical_volume *lv; |
498 | ||
7a593325 | 499 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
4bd9480d AK |
500 | return 0; |
501 | ||
2d6fcbf6 AK |
502 | if (!lv_is_origin(lv)) |
503 | origin_only = 0; | |
504 | ||
505 | r = lv_info(cmd, lv, origin_only, info, with_open_count, with_read_ahead); | |
2b82bd79 | 506 | free_vg(lv->vg); |
0548bcc2 MB |
507 | |
508 | return r; | |
4bd9480d AK |
509 | } |
510 | ||
d345bf2c PR |
511 | /* |
512 | * Returns 1 if percent set, else 0 on failure. | |
513 | */ | |
514 | int lv_check_transient(struct logical_volume *lv) | |
515 | { | |
516 | int r; | |
517 | struct dev_manager *dm; | |
518 | ||
519 | if (!activation()) | |
520 | return 0; | |
521 | ||
522 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) | |
523 | return_0; | |
524 | ||
525 | if (!(r = dev_manager_transient(dm, lv))) | |
526 | stack; | |
527 | ||
528 | dev_manager_destroy(dm); | |
529 | ||
530 | return r; | |
531 | } | |
532 | ||
1951dba9 AL |
533 | /* |
534 | * Returns 1 if percent set, else 0 on failure. | |
535 | */ | |
8191fe4f | 536 | int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent) |
1951dba9 AL |
537 | { |
538 | int r; | |
539 | struct dev_manager *dm; | |
540 | ||
d1d9800e AK |
541 | if (!activation()) |
542 | return 0; | |
543 | ||
5f4b2acf AK |
544 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
545 | return_0; | |
1951dba9 | 546 | |
8191fe4f | 547 | if (!(r = dev_manager_snapshot_percent(dm, lv, percent))) |
1951dba9 | 548 | stack; |
c826c0d1 | 549 | |
1951dba9 AL |
550 | dev_manager_destroy(dm); |
551 | ||
552 | return r; | |
553 | } | |
554 | ||
10b29b8d | 555 | /* FIXME Merge with snapshot_percent */ |
472ac5bd | 556 | int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, |
8191fe4f | 557 | int wait, percent_t *percent, uint32_t *event_nr) |
10b29b8d AK |
558 | { |
559 | int r; | |
560 | struct dev_manager *dm; | |
b65b777d | 561 | struct lvinfo info; |
10b29b8d | 562 | |
876003dc AK |
563 | /* If mirrored LV is temporarily shrinked to 1 area (= linear), |
564 | * it should be considered in-sync. */ | |
2c44337b | 565 | if (dm_list_size(&lv->segments) == 1 && first_seg(lv)->area_count == 1) { |
8191fe4f | 566 | *percent = PERCENT_100; |
876003dc AK |
567 | return 1; |
568 | } | |
569 | ||
10b29b8d AK |
570 | if (!activation()) |
571 | return 0; | |
572 | ||
2d6fcbf6 | 573 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
5f4b2acf | 574 | return_0; |
b65b777d AK |
575 | |
576 | if (!info.exists) | |
577 | return 0; | |
578 | ||
5f4b2acf AK |
579 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
580 | return_0; | |
10b29b8d | 581 | |
8191fe4f | 582 | if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent, event_nr))) |
10b29b8d AK |
583 | stack; |
584 | ||
585 | dev_manager_destroy(dm); | |
586 | ||
587 | return r; | |
588 | } | |
589 | ||
ab9663f3 | 590 | static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv) |
2ba80b43 | 591 | { |
199e490e | 592 | struct lvinfo info; |
2ba80b43 | 593 | |
2d6fcbf6 | 594 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) { |
2ba80b43 | 595 | stack; |
de6c9183 | 596 | return -1; |
2ba80b43 JT |
597 | } |
598 | ||
de6c9183 | 599 | return info.exists; |
2ba80b43 JT |
600 | } |
601 | ||
f894b4b1 | 602 | static int _lv_open_count(struct cmd_context *cmd, struct logical_volume *lv) |
5986ec94 | 603 | { |
199e490e | 604 | struct lvinfo info; |
5986ec94 | 605 | |
2d6fcbf6 | 606 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) { |
5986ec94 | 607 | stack; |
de6c9183 | 608 | return -1; |
5986ec94 JT |
609 | } |
610 | ||
de6c9183 | 611 | return info.open_count; |
5986ec94 JT |
612 | } |
613 | ||
2d6fcbf6 | 614 | static int _lv_activate_lv(struct logical_volume *lv, unsigned origin_only) |
b1713d28 | 615 | { |
6d52fb46 | 616 | int r; |
de6c9183 | 617 | struct dev_manager *dm; |
b1713d28 | 618 | |
5f4b2acf AK |
619 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
620 | return_0; | |
ae2bb665 | 621 | |
2d6fcbf6 | 622 | if (!(r = dev_manager_activate(dm, lv, origin_only))) |
6d52fb46 | 623 | stack; |
ae2bb665 | 624 | |
de6c9183 | 625 | dev_manager_destroy(dm); |
ae2bb665 | 626 | return r; |
b1713d28 | 627 | } |
a381c45a | 628 | |
2d6fcbf6 | 629 | static int _lv_preload(struct logical_volume *lv, unsigned origin_only, int *flush_required) |
0a5e4a14 | 630 | { |
de6c9183 JT |
631 | int r; |
632 | struct dev_manager *dm; | |
37ed70b9 | 633 | |
5f4b2acf AK |
634 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
635 | return_0; | |
636 | ||
2d6fcbf6 | 637 | if (!(r = dev_manager_preload(dm, lv, origin_only, flush_required))) |
6d52fb46 | 638 | stack; |
5f4b2acf AK |
639 | |
640 | dev_manager_destroy(dm); | |
641 | return r; | |
642 | } | |
643 | ||
644 | static int _lv_deactivate(struct logical_volume *lv) | |
645 | { | |
646 | int r; | |
647 | struct dev_manager *dm; | |
648 | ||
649 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) | |
650 | return_0; | |
37ed70b9 | 651 | |
de6c9183 | 652 | if (!(r = dev_manager_deactivate(dm, lv))) |
37ed70b9 | 653 | stack; |
37ed70b9 | 654 | |
de6c9183 JT |
655 | dev_manager_destroy(dm); |
656 | return r; | |
37ed70b9 JT |
657 | } |
658 | ||
2d6fcbf6 | 659 | static int _lv_suspend_lv(struct logical_volume *lv, unsigned origin_only, int lockfs, int flush_required) |
4a624ca0 | 660 | { |
20c5fcf7 AK |
661 | int r; |
662 | struct dev_manager *dm; | |
c2d72fd4 | 663 | |
5f4b2acf AK |
664 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
665 | return_0; | |
0a5e4a14 | 666 | |
2d6fcbf6 | 667 | if (!(r = dev_manager_suspend(dm, lv, origin_only, lockfs, flush_required))) |
37ed70b9 | 668 | stack; |
0a5e4a14 | 669 | |
20c5fcf7 AK |
670 | dev_manager_destroy(dm); |
671 | return r; | |
6d52fb46 | 672 | } |
4a624ca0 | 673 | |
8c013da4 | 674 | /* |
f75c11ed | 675 | * These two functions return the number of visible LVs in the state, |
8c013da4 AK |
676 | * or -1 on error. |
677 | */ | |
65752052 | 678 | int lvs_in_vg_activated(struct volume_group *vg) |
f047219b | 679 | { |
60f13f01 | 680 | struct lv_list *lvl; |
94b8220f | 681 | int count = 0; |
37ed70b9 | 682 | |
d1d9800e AK |
683 | if (!activation()) |
684 | return 0; | |
685 | ||
2c44337b | 686 | dm_list_iterate_items(lvl, &vg->lvs) { |
59d8429c | 687 | if (lv_is_visible(lvl->lv)) |
ab9663f3 | 688 | count += (_lv_active(vg->cmd, lvl->lv) == 1); |
37ed70b9 JT |
689 | } |
690 | ||
691 | return count; | |
f047219b | 692 | } |
2ba80b43 | 693 | |
08c9ff43 | 694 | int lvs_in_vg_opened(const struct volume_group *vg) |
2ba80b43 | 695 | { |
08c9ff43 | 696 | const struct lv_list *lvl; |
94b8220f | 697 | int count = 0; |
2ba80b43 | 698 | |
d1d9800e AK |
699 | if (!activation()) |
700 | return 0; | |
701 | ||
2c44337b | 702 | dm_list_iterate_items(lvl, &vg->lvs) { |
afd9ba98 | 703 | if (lv_is_visible(lvl->lv)) |
f894b4b1 | 704 | count += (_lv_open_count(vg->cmd, lvl->lv) > 0); |
2ba80b43 JT |
705 | } |
706 | ||
707 | return count; | |
708 | } | |
413cc918 | 709 | |
5ca6698f | 710 | /* |
27ff8813 JEB |
711 | * _lv_is_active |
712 | * @lv: logical volume being queried | |
713 | * @locally: set if active locally (when provided) | |
714 | * @exclusive: set if active exclusively (when provided) | |
715 | * | |
5ca6698f | 716 | * Determine whether an LV is active locally or in a cluster. |
27ff8813 JEB |
717 | * In addition to the return code which indicates whether or |
718 | * not the LV is active somewhere, two other values are set | |
719 | * to yield more information about the status of the activation: | |
720 | * return locally exclusively status | |
721 | * ====== ======= =========== ====== | |
722 | * 0 0 0 not active | |
723 | * 1 0 0 active remotely | |
724 | * 1 0 1 exclusive remotely | |
725 | * 1 1 0 active locally and possibly remotely | |
726 | * 1 1 1 exclusive locally (or local && !cluster) | |
727 | * The VG lock must be held to call this function. | |
728 | * | |
729 | * Returns: 0 or 1 | |
5ca6698f | 730 | */ |
27ff8813 JEB |
731 | static int _lv_is_active(struct logical_volume *lv, |
732 | int *locally, int *exclusive) | |
5ca6698f | 733 | { |
27ff8813 JEB |
734 | int r, l, e; /* remote, local, and exclusive */ |
735 | ||
736 | r = l = e = 0; | |
6ac30c94 | 737 | |
ab9663f3 | 738 | if (_lv_active(lv->vg->cmd, lv)) |
27ff8813 | 739 | l = 1; |
5ca6698f | 740 | |
27ff8813 JEB |
741 | if (!vg_is_clustered(lv->vg)) { |
742 | e = 1; /* exclusive by definition */ | |
743 | goto out; | |
744 | } | |
745 | ||
746 | /* Active locally, and the caller doesn't care about exclusive */ | |
747 | if (l && !exclusive) | |
748 | goto out; | |
5ca6698f | 749 | |
27ff8813 JEB |
750 | if ((r = remote_lock_held(lv->lvid.s, &e)) >= 0) |
751 | goto out; | |
6ac30c94 MB |
752 | |
753 | /* | |
27ff8813 JEB |
754 | * If lock query is not supported (due to interfacing with old |
755 | * code), then we cannot evaluate exclusivity properly. | |
756 | * | |
757 | * Old users of this function will never be affected by this, | |
758 | * since they are only concerned about active vs. not active. | |
759 | * New users of this function who specifically ask for 'exclusive' | |
760 | * will be given an error message. | |
6ac30c94 | 761 | */ |
27ff8813 JEB |
762 | if (l) { |
763 | if (exclusive) | |
764 | log_error("Unable to determine exclusivity of %s", | |
765 | lv->name); | |
766 | goto out; | |
767 | } | |
768 | ||
6ac30c94 | 769 | if (activate_lv_excl(lv->vg->cmd, lv)) { |
56b3d204 MS |
770 | if (!deactivate_lv(lv->vg->cmd, lv)) |
771 | stack; | |
25a2e7b8 | 772 | return 0; |
6ac30c94 MB |
773 | } |
774 | ||
27ff8813 JEB |
775 | out: |
776 | if (locally) | |
777 | *locally = l; | |
778 | if (exclusive) | |
779 | *exclusive = e; | |
780 | ||
781 | log_very_verbose("%s/%s is %sactive%s%s", | |
782 | lv->vg->name, lv->name, | |
783 | (r || l) ? "" : "not ", | |
784 | (exclusive && e) ? " exclusive" : "", | |
785 | e ? (l ? " locally" : " remotely") : ""); | |
786 | ||
787 | return r || l; | |
788 | } | |
789 | ||
790 | int lv_is_active(struct logical_volume *lv) | |
791 | { | |
792 | return _lv_is_active(lv, NULL, NULL); | |
793 | } | |
794 | ||
795 | /* | |
796 | int lv_is_active_locally(struct logical_volume *lv) | |
797 | { | |
798 | int l; | |
799 | return _lv_is_active(lv, &l, NULL) && l; | |
800 | } | |
801 | */ | |
802 | ||
803 | int lv_is_active_exclusive_locally(struct logical_volume *lv) | |
804 | { | |
805 | int l, e; | |
806 | return _lv_is_active(lv, &l, &e) && l && e; | |
807 | } | |
808 | ||
809 | int lv_is_active_exclusive_remotely(struct logical_volume *lv) | |
810 | { | |
811 | int l, e; | |
812 | return _lv_is_active(lv, &l, &e) && !l && e; | |
5ca6698f DW |
813 | } |
814 | ||
d1e8046f AK |
815 | #ifdef DMEVENTD |
816 | static struct dm_event_handler *_create_dm_event_handler(struct cmd_context *cmd, const char *dmuuid, const char *dso, | |
817 | const int timeout, enum dm_event_mask mask) | |
818 | { | |
819 | struct dm_event_handler *dmevh; | |
820 | ||
821 | if (!(dmevh = dm_event_handler_create())) | |
822 | return_NULL; | |
823 | ||
824 | if (dm_event_handler_set_dmeventd_path(dmevh, find_config_tree_str(cmd, "dmeventd/executable", NULL))) | |
825 | goto_bad; | |
826 | ||
827 | if (dm_event_handler_set_dso(dmevh, dso)) | |
828 | goto_bad; | |
829 | ||
830 | if (dm_event_handler_set_uuid(dmevh, dmuuid)) | |
831 | goto_bad; | |
832 | ||
833 | dm_event_handler_set_timeout(dmevh, timeout); | |
834 | dm_event_handler_set_event_mask(dmevh, mask); | |
835 | ||
836 | return dmevh; | |
837 | ||
838 | bad: | |
839 | dm_event_handler_destroy(dmevh); | |
840 | return NULL; | |
841 | } | |
842 | ||
843 | char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath) | |
844 | { | |
845 | char *path; | |
846 | ||
847 | if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) { | |
848 | log_error("Failed to allocate dmeventd library path."); | |
849 | return NULL; | |
850 | } | |
851 | ||
852 | get_shared_library_path(cmd, libpath, path, PATH_MAX); | |
853 | ||
854 | return path; | |
855 | } | |
856 | ||
f92b4f94 AK |
857 | int target_registered_with_dmeventd(struct cmd_context *cmd, const char *dso, |
858 | struct logical_volume *lv, int *pending) | |
d1e8046f AK |
859 | { |
860 | char *uuid; | |
861 | enum dm_event_mask evmask = 0; | |
862 | struct dm_event_handler *dmevh; | |
863 | ||
864 | *pending = 0; | |
865 | ||
866 | if (!dso) | |
867 | return_0; | |
868 | ||
f92b4f94 AK |
869 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
870 | if (!(uuid = build_dm_uuid(cmd->mem, lv->lvid.s, lv_is_origin(lv) ? "real" : NULL))) | |
d1e8046f AK |
871 | return_0; |
872 | ||
873 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, 0, DM_EVENT_ALL_ERRORS))) | |
874 | return_0; | |
875 | ||
876 | if (dm_event_get_registered_device(dmevh, 0)) { | |
877 | dm_event_handler_destroy(dmevh); | |
878 | return 0; | |
879 | } | |
880 | ||
881 | evmask = dm_event_handler_get_event_mask(dmevh); | |
882 | if (evmask & DM_EVENT_REGISTRATION_PENDING) { | |
883 | *pending = 1; | |
884 | evmask &= ~DM_EVENT_REGISTRATION_PENDING; | |
885 | } | |
886 | ||
887 | dm_event_handler_destroy(dmevh); | |
888 | ||
889 | return evmask; | |
890 | } | |
891 | ||
f92b4f94 | 892 | int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv, |
d1e8046f AK |
893 | int evmask __attribute__((unused)), int set, int timeout) |
894 | { | |
895 | char *uuid; | |
896 | struct dm_event_handler *dmevh; | |
897 | int r; | |
898 | ||
899 | if (!dso) | |
900 | return_0; | |
901 | ||
f92b4f94 AK |
902 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
903 | if (!(uuid = build_dm_uuid(cmd->mem, lv->lvid.s, lv_is_origin(lv) ? "real" : NULL))) | |
d1e8046f AK |
904 | return_0; |
905 | ||
906 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, timeout, | |
907 | DM_EVENT_ALL_ERRORS | (timeout ? DM_EVENT_TIMEOUT : 0)))) | |
908 | return_0; | |
909 | ||
910 | r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh); | |
911 | ||
912 | dm_event_handler_destroy(dmevh); | |
913 | ||
914 | if (!r) | |
915 | return_0; | |
916 | ||
917 | log_info("%s %s for events", set ? "Monitored" : "Unmonitored", uuid); | |
918 | ||
919 | return 1; | |
920 | } | |
921 | ||
922 | #endif | |
923 | ||
3e3d5d85 | 924 | /* |
8a37910d AK |
925 | * Returns 0 if an attempt to (un)monitor the device failed. |
926 | * Returns 1 otherwise. | |
3e3d5d85 | 927 | */ |
2d6fcbf6 AK |
928 | int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv, |
929 | unsigned origin_only, int monitor) | |
15d91f5a | 930 | { |
ed09d7e3 | 931 | #ifdef DMEVENTD |
8a37910d AK |
932 | int i, pending = 0, monitored; |
933 | int r = 1; | |
2c44337b | 934 | struct dm_list *tmp, *snh, *snht; |
15d91f5a | 935 | struct lv_segment *seg; |
7a369d37 | 936 | struct lv_segment *log_seg; |
24f4552b | 937 | int (*monitor_fn) (struct lv_segment *s, int e); |
4e9083db | 938 | uint32_t s; |
15d91f5a | 939 | |
20db8ffc AK |
940 | /* skip dmeventd code altogether */ |
941 | if (dmeventd_monitor_mode() == DMEVENTD_MONITOR_IGNORE) | |
942 | return 1; | |
943 | ||
8a37910d AK |
944 | /* |
945 | * Nothing to do if dmeventd configured not to be used. | |
946 | */ | |
947 | if (monitor && !dmeventd_monitor_mode()) | |
3e3d5d85 AK |
948 | return 1; |
949 | ||
67961c7c PR |
950 | /* |
951 | * In case of a snapshot device, we monitor lv->snapshot->lv, | |
952 | * not the actual LV itself. | |
953 | */ | |
c79b4251 | 954 | if (lv_is_cow(lv) && !lv_is_merging_cow(lv)) |
2d6fcbf6 | 955 | return monitor_dev_for_events(cmd, lv->snapshot->lv, 0, monitor); |
67961c7c PR |
956 | |
957 | /* | |
958 | * In case this LV is a snapshot origin, we instead monitor | |
f92b4f94 AK |
959 | * each of its respective snapshots. The origin itself may |
960 | * also need to be monitored if it is a mirror, for example. | |
67961c7c | 961 | */ |
2d6fcbf6 | 962 | if (!origin_only && lv_is_origin(lv)) |
2c44337b AK |
963 | dm_list_iterate_safe(snh, snht, &lv->snapshot_segs) |
964 | if (!monitor_dev_for_events(cmd, dm_list_struct_base(snh, | |
2d6fcbf6 | 965 | struct lv_segment, origin_list)->cow, 0, monitor)) |
0c06de63 | 966 | r = 0; |
67961c7c | 967 | |
7a369d37 JEB |
968 | /* |
969 | * If the volume is mirrored and its log is also mirrored, monitor | |
970 | * the log volume as well. | |
971 | */ | |
972 | if ((seg = first_seg(lv)) != NULL && seg->log_lv != NULL && | |
973 | (log_seg = first_seg(seg->log_lv)) != NULL && | |
974 | seg_is_mirrored(log_seg)) | |
2d6fcbf6 | 975 | if (!monitor_dev_for_events(cmd, seg->log_lv, 0, monitor)) |
7a369d37 JEB |
976 | r = 0; |
977 | ||
2c44337b AK |
978 | dm_list_iterate(tmp, &lv->segments) { |
979 | seg = dm_list_item(tmp, struct lv_segment); | |
15d91f5a | 980 | |
4e9083db AK |
981 | /* Recurse for AREA_LV */ |
982 | for (s = 0; s < seg->area_count; s++) { | |
983 | if (seg_type(seg, s) != AREA_LV) | |
984 | continue; | |
2d6fcbf6 | 985 | if (!monitor_dev_for_events(cmd, seg_lv(seg, s), 0, |
4e9083db AK |
986 | monitor)) { |
987 | log_error("Failed to %smonitor %s", | |
988 | monitor ? "" : "un", | |
989 | seg_lv(seg, s)->name); | |
990 | r = 0; | |
991 | } | |
992 | } | |
993 | ||
8ef6eb30 AK |
994 | if (!seg_monitored(seg) || (seg->status & PVMOVE)) |
995 | continue; | |
8a37910d AK |
996 | |
997 | monitor_fn = NULL; | |
ed09d7e3 | 998 | |
8ef6eb30 | 999 | /* Check monitoring status */ |
8a37910d AK |
1000 | if (seg->segtype->ops->target_monitored) |
1001 | monitored = seg->segtype->ops->target_monitored(seg, &pending); | |
8ef6eb30 AK |
1002 | else |
1003 | continue; /* segtype doesn't support registration */ | |
1004 | ||
1005 | /* | |
1006 | * FIXME: We should really try again if pending | |
1007 | */ | |
8a37910d | 1008 | monitored = (pending) ? 0 : monitored; |
8ef6eb30 | 1009 | |
8a37910d AK |
1010 | if (monitor) { |
1011 | if (monitored) | |
8ef6eb30 | 1012 | log_verbose("%s/%s already monitored.", lv->vg->name, lv->name); |
8a37910d AK |
1013 | else if (seg->segtype->ops->target_monitor_events) |
1014 | monitor_fn = seg->segtype->ops->target_monitor_events; | |
8ef6eb30 | 1015 | } else { |
8a37910d | 1016 | if (!monitored) |
8ef6eb30 | 1017 | log_verbose("%s/%s already not monitored.", lv->vg->name, lv->name); |
8a37910d AK |
1018 | else if (seg->segtype->ops->target_unmonitor_events) |
1019 | monitor_fn = seg->segtype->ops->target_unmonitor_events; | |
8ef6eb30 | 1020 | } |
15d91f5a | 1021 | |
8ef6eb30 | 1022 | /* Do [un]monitor */ |
8a37910d | 1023 | if (!monitor_fn) |
3e3d5d85 | 1024 | continue; |
e24e7130 | 1025 | |
85a80e05 AK |
1026 | log_verbose("%sonitoring %s/%s%s", monitor ? "M" : "Not m", lv->vg->name, lv->name, |
1027 | test_mode() ? " [Test mode: skipping this]" : ""); | |
1028 | ||
1029 | /* FIXME Test mode should really continue a bit further. */ | |
1030 | if (test_mode()) | |
1031 | continue; | |
8a37910d | 1032 | |
3e3d5d85 | 1033 | /* FIXME specify events */ |
57fc4cc0 | 1034 | if (!monitor_fn(seg, 0)) { |
8a37910d AK |
1035 | log_error("%s/%s: %s segment monitoring function failed.", |
1036 | lv->vg->name, lv->name, seg->segtype->name); | |
1037 | return 0; | |
e24e7130 | 1038 | } |
3e3d5d85 | 1039 | |
8ef6eb30 AK |
1040 | /* Check [un]monitor results */ |
1041 | /* Try a couple times if pending, but not forever... */ | |
1042 | for (i = 0; i < 10; i++) { | |
1043 | pending = 0; | |
8a37910d | 1044 | monitored = seg->segtype->ops->target_monitored(seg, &pending); |
8ef6eb30 | 1045 | if (pending || |
8a37910d AK |
1046 | (!monitored && monitor) || |
1047 | (monitored && !monitor)) | |
1048 | log_very_verbose("%s/%s %smonitoring still pending: waiting...", | |
1049 | lv->vg->name, lv->name, monitor ? "" : "un"); | |
8ef6eb30 AK |
1050 | else |
1051 | break; | |
1052 | sleep(1); | |
1053 | } | |
1054 | ||
85a80e05 AK |
1055 | if (r) |
1056 | r = (monitored && monitor) || (!monitored && !monitor); | |
15d91f5a | 1057 | } |
e6493477 | 1058 | |
3e3d5d85 AK |
1059 | return r; |
1060 | #else | |
15d91f5a | 1061 | return 1; |
3e3d5d85 | 1062 | #endif |
15d91f5a | 1063 | } |
15d91f5a | 1064 | |
658b5812 | 1065 | static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 1066 | unsigned origin_only, int error_if_not_suspended) |
413cc918 | 1067 | { |
095bbca6 | 1068 | struct logical_volume *lv = NULL, *lv_pre = NULL; |
199e490e | 1069 | struct lvinfo info; |
eb91c4ee | 1070 | int r = 0, lockfs = 0, flush_required = 0; |
413cc918 | 1071 | |
d1d9800e AK |
1072 | if (!activation()) |
1073 | return 1; | |
1074 | ||
8b888354 | 1075 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1076 | goto_out; |
8b888354 | 1077 | |
7a593325 | 1078 | /* Use precommitted metadata if present */ |
8b888354 | 1079 | if (!(lv_pre = lv_from_lvid(cmd, lvid_s, 1))) |
095bbca6 | 1080 | goto_out; |
413cc918 | 1081 | |
2d6fcbf6 AK |
1082 | /* Ignore origin_only unless LV is origin in both old and new metadata */ |
1083 | if (!lv_is_origin(lv) || !lv_is_origin(lv_pre)) | |
1084 | origin_only = 0; | |
1085 | ||
20c5fcf7 | 1086 | if (test_mode()) { |
2d6fcbf6 | 1087 | _skip("Suspending %s%s.", lv->name, origin_only ? " origin without snapshots" : ""); |
095bbca6 MB |
1088 | r = 1; |
1089 | goto out; | |
20c5fcf7 AK |
1090 | } |
1091 | ||
2d6fcbf6 | 1092 | if (!lv_info(cmd, lv, origin_only, &info, 0, 0)) |
095bbca6 | 1093 | goto_out; |
41967a02 | 1094 | |
095bbca6 | 1095 | if (!info.exists || info.suspended) { |
63ae0d14 MB |
1096 | if (!error_if_not_suspended) { |
1097 | r = 1; | |
1098 | if (info.suspended) | |
b1bcff74 | 1099 | critical_section_inc(cmd); |
63ae0d14 | 1100 | } |
095bbca6 MB |
1101 | goto out; |
1102 | } | |
914c9723 | 1103 | |
9249fb12 ZK |
1104 | if (!lv_read_replicator_vgs(lv)) |
1105 | goto_out; | |
1106 | ||
c1fdeec9 MB |
1107 | lv_calculate_readahead(lv, NULL); |
1108 | ||
5f4b2acf | 1109 | /* If VG was precommitted, preload devices for the LV */ |
8b888354 | 1110 | if ((lv_pre->vg->status & PRECOMMITTED)) { |
2d6fcbf6 | 1111 | if (!_lv_preload(lv_pre, origin_only, &flush_required)) { |
5f4b2acf | 1112 | /* FIXME Revert preloading */ |
095bbca6 | 1113 | goto_out; |
5f4b2acf AK |
1114 | } |
1115 | } | |
1116 | ||
2d6fcbf6 | 1117 | if (!monitor_dev_for_events(cmd, lv, origin_only, 0)) |
e24e7130 | 1118 | /* FIXME Consider aborting here */ |
ed09d7e3 AK |
1119 | stack; |
1120 | ||
b1bcff74 | 1121 | critical_section_inc(cmd); |
9cd3426d | 1122 | |
2d6fcbf6 AK |
1123 | if (!origin_only && |
1124 | (lv_is_origin(lv_pre) || lv_is_cow(lv_pre))) | |
9cd3426d AK |
1125 | lockfs = 1; |
1126 | ||
2d6fcbf6 | 1127 | if (!_lv_suspend_lv(lv, origin_only, lockfs, flush_required)) { |
b1bcff74 | 1128 | critical_section_dec(cmd); |
095bbca6 | 1129 | goto out; |
914c9723 | 1130 | } |
8c013da4 | 1131 | |
095bbca6 MB |
1132 | r = 1; |
1133 | out: | |
1134 | if (lv_pre) | |
2b82bd79 | 1135 | free_vg(lv_pre->vg); |
9249fb12 ZK |
1136 | if (lv) { |
1137 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1138 | free_vg(lv->vg); |
9249fb12 | 1139 | } |
095bbca6 MB |
1140 | |
1141 | return r; | |
413cc918 AK |
1142 | } |
1143 | ||
658b5812 | 1144 | /* Returns success if the device is not active */ |
2d6fcbf6 | 1145 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1146 | { |
2d6fcbf6 | 1147 | return _lv_suspend(cmd, lvid_s, origin_only, 0); |
658b5812 AK |
1148 | } |
1149 | ||
2d6fcbf6 AK |
1150 | /* No longer used */ |
1151 | /*********** | |
658b5812 AK |
1152 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
1153 | { | |
1154 | return _lv_suspend(cmd, lvid_s, 1); | |
1155 | } | |
2d6fcbf6 | 1156 | ***********/ |
658b5812 | 1157 | |
c054e7cc JEB |
1158 | /* |
1159 | * _lv_resume | |
1160 | * @cmd | |
1161 | * @lvid_s | |
1162 | * @origin_only | |
1163 | * @exclusive: This parameter only has an affect in cluster-context. | |
1164 | * It forces local target type to be used (instead of | |
1165 | * cluster-aware type). | |
1166 | * @error_if_not_active | |
1167 | */ | |
658b5812 | 1168 | static int _lv_resume(struct cmd_context *cmd, const char *lvid_s, |
c054e7cc | 1169 | unsigned origin_only, unsigned exclusive, |
658b5812 | 1170 | int error_if_not_active) |
413cc918 AK |
1171 | { |
1172 | struct logical_volume *lv; | |
199e490e | 1173 | struct lvinfo info; |
095bbca6 | 1174 | int r = 0; |
413cc918 | 1175 | |
d1d9800e AK |
1176 | if (!activation()) |
1177 | return 1; | |
1178 | ||
7a593325 | 1179 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
75b37a11 | 1180 | goto_out; |
413cc918 | 1181 | |
2d6fcbf6 AK |
1182 | if (!lv_is_origin(lv)) |
1183 | origin_only = 0; | |
1184 | ||
20c5fcf7 | 1185 | if (test_mode()) { |
2d6fcbf6 | 1186 | _skip("Resuming %s%s.", lv->name, origin_only ? " without snapshots" : ""); |
095bbca6 MB |
1187 | r = 1; |
1188 | goto out; | |
20c5fcf7 AK |
1189 | } |
1190 | ||
2d6fcbf6 | 1191 | if (!lv_info(cmd, lv, origin_only, &info, 0, 0)) |
095bbca6 | 1192 | goto_out; |
41967a02 | 1193 | |
095bbca6 | 1194 | if (!info.exists || !info.suspended) { |
4ec2ae86 ZK |
1195 | if (error_if_not_active) |
1196 | goto_out; | |
1197 | r = 1; | |
1198 | goto out; | |
095bbca6 | 1199 | } |
914c9723 | 1200 | |
c054e7cc JEB |
1201 | /* |
1202 | * When targets are activated exclusively in a cluster, the | |
1203 | * non-clustered target should be used. This only happens | |
1204 | * if ACTIVATE_EXCL is set in lv->status. | |
1205 | */ | |
1206 | if (exclusive) | |
1207 | lv->status |= ACTIVATE_EXCL; | |
1208 | ||
2d6fcbf6 | 1209 | if (!_lv_activate_lv(lv, origin_only)) |
75b37a11 | 1210 | goto_out; |
914c9723 | 1211 | |
b1bcff74 | 1212 | critical_section_dec(cmd); |
413cc918 | 1213 | |
2d6fcbf6 | 1214 | if (!monitor_dev_for_events(cmd, lv, origin_only, 1)) |
ed09d7e3 | 1215 | stack; |
15d91f5a | 1216 | |
095bbca6 MB |
1217 | r = 1; |
1218 | out: | |
1219 | if (lv) | |
2b82bd79 | 1220 | free_vg(lv->vg); |
095bbca6 MB |
1221 | |
1222 | return r; | |
413cc918 AK |
1223 | } |
1224 | ||
658b5812 | 1225 | /* Returns success if the device is not active */ |
c054e7cc JEB |
1226 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s, |
1227 | unsigned origin_only, unsigned exclusive) | |
658b5812 | 1228 | { |
c054e7cc | 1229 | return _lv_resume(cmd, lvid_s, origin_only, exclusive, 0); |
658b5812 AK |
1230 | } |
1231 | ||
2d6fcbf6 | 1232 | int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1233 | { |
c054e7cc | 1234 | return _lv_resume(cmd, lvid_s, origin_only, 0, 1); |
658b5812 AK |
1235 | } |
1236 | ||
64a95010 AK |
1237 | static int _lv_has_open_snapshots(struct logical_volume *lv) |
1238 | { | |
1239 | struct lv_segment *snap_seg; | |
1240 | struct lvinfo info; | |
1241 | int r = 0; | |
1242 | ||
1243 | dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list) { | |
2d6fcbf6 | 1244 | if (!lv_info(lv->vg->cmd, snap_seg->cow, 0, &info, 1, 0)) { |
64a95010 AK |
1245 | r = 1; |
1246 | continue; | |
1247 | } | |
1248 | ||
1249 | if (info.exists && info.open_count) { | |
1250 | log_error("LV %s/%s has open snapshot %s: " | |
1251 | "not deactivating", lv->vg->name, lv->name, | |
1252 | snap_seg->cow->name); | |
1253 | r = 1; | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | return r; | |
1258 | } | |
1259 | ||
be326a2f | 1260 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) |
f4cbeaf0 AK |
1261 | { |
1262 | struct logical_volume *lv; | |
199e490e | 1263 | struct lvinfo info; |
095bbca6 | 1264 | int r = 0; |
f4cbeaf0 | 1265 | |
d1d9800e AK |
1266 | if (!activation()) |
1267 | return 1; | |
1268 | ||
7a593325 | 1269 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1270 | goto out; |
f4cbeaf0 | 1271 | |
20c5fcf7 AK |
1272 | if (test_mode()) { |
1273 | _skip("Deactivating '%s'.", lv->name); | |
095bbca6 MB |
1274 | r = 1; |
1275 | goto out; | |
20c5fcf7 AK |
1276 | } |
1277 | ||
2d6fcbf6 | 1278 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) |
095bbca6 | 1279 | goto_out; |
41967a02 | 1280 | |
095bbca6 MB |
1281 | if (!info.exists) { |
1282 | r = 1; | |
1283 | goto out; | |
1284 | } | |
f4cbeaf0 | 1285 | |
64a95010 AK |
1286 | if (lv_is_visible(lv)) { |
1287 | if (info.open_count) { | |
1288 | log_error("LV %s/%s in use: not deactivating", | |
1289 | lv->vg->name, lv->name); | |
1290 | goto out; | |
1291 | } | |
1292 | if (lv_is_origin(lv) && _lv_has_open_snapshots(lv)) | |
1293 | goto_out; | |
0cf96f33 AK |
1294 | } |
1295 | ||
9249fb12 ZK |
1296 | if (!lv_read_replicator_vgs(lv)) |
1297 | goto_out; | |
1298 | ||
c1fdeec9 MB |
1299 | lv_calculate_readahead(lv, NULL); |
1300 | ||
2d6fcbf6 | 1301 | if (!monitor_dev_for_events(cmd, lv, 0, 0)) |
ed09d7e3 | 1302 | stack; |
15d91f5a | 1303 | |
b1bcff74 | 1304 | critical_section_inc(cmd); |
914c9723 | 1305 | r = _lv_deactivate(lv); |
b1bcff74 | 1306 | critical_section_dec(cmd); |
914c9723 | 1307 | |
401a40d9 | 1308 | if (!lv_info(cmd, lv, 0, &info, 0, 0) || info.exists) |
89a6cdfd | 1309 | r = 0; |
095bbca6 | 1310 | out: |
9249fb12 ZK |
1311 | if (lv) { |
1312 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1313 | free_vg(lv->vg); |
9249fb12 | 1314 | } |
095bbca6 | 1315 | |
914c9723 | 1316 | return r; |
f4cbeaf0 AK |
1317 | } |
1318 | ||
658b5812 AK |
1319 | /* Test if LV passes filter */ |
1320 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, | |
1321 | int *activate_lv) | |
1322 | { | |
1323 | struct logical_volume *lv; | |
095bbca6 | 1324 | int r = 0; |
658b5812 | 1325 | |
095bbca6 MB |
1326 | if (!activation()) { |
1327 | *activate_lv = 1; | |
1328 | return 1; | |
1329 | } | |
658b5812 | 1330 | |
424dd43e | 1331 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1332 | goto out; |
658b5812 AK |
1333 | |
1334 | if (!_passes_activation_filter(cmd, lv)) { | |
f7e3a19f PR |
1335 | log_verbose("Not activating %s/%s since it does not pass " |
1336 | "activation filter.", lv->vg->name, lv->name); | |
658b5812 | 1337 | *activate_lv = 0; |
095bbca6 MB |
1338 | } else |
1339 | *activate_lv = 1; | |
1340 | r = 1; | |
1341 | out: | |
1342 | if (lv) | |
2b82bd79 | 1343 | free_vg(lv->vg); |
658b5812 | 1344 | |
095bbca6 | 1345 | return r; |
658b5812 AK |
1346 | } |
1347 | ||
07d31831 AK |
1348 | static int _lv_activate(struct cmd_context *cmd, const char *lvid_s, |
1349 | int exclusive, int filter) | |
f4cbeaf0 AK |
1350 | { |
1351 | struct logical_volume *lv; | |
199e490e | 1352 | struct lvinfo info; |
095bbca6 | 1353 | int r = 0; |
f4cbeaf0 | 1354 | |
d1d9800e AK |
1355 | if (!activation()) |
1356 | return 1; | |
1357 | ||
424dd43e | 1358 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1359 | goto out; |
f4cbeaf0 | 1360 | |
658b5812 | 1361 | if (filter && !_passes_activation_filter(cmd, lv)) { |
f7e3a19f PR |
1362 | log_error("Not activating %s/%s since it does not pass " |
1363 | "activation filter.", lv->vg->name, lv->name); | |
095bbca6 | 1364 | goto out; |
de17d760 AK |
1365 | } |
1366 | ||
cda35408 | 1367 | if ((!lv->vg->cmd->partial_activation) && (lv->status & PARTIAL_LV)) { |
8c5bcdab AK |
1368 | log_error("Refusing activation of partial LV %s. Use --partial to override.", |
1369 | lv->name); | |
095bbca6 | 1370 | goto_out; |
8c5bcdab AK |
1371 | } |
1372 | ||
b4048242 PR |
1373 | if (lv_has_unknown_segments(lv)) { |
1374 | log_error("Refusing activation of LV %s containing " | |
1375 | "an unrecognised segment.", lv->name); | |
1376 | goto_out; | |
1377 | } | |
1378 | ||
20c5fcf7 AK |
1379 | if (test_mode()) { |
1380 | _skip("Activating '%s'.", lv->name); | |
095bbca6 MB |
1381 | r = 1; |
1382 | goto out; | |
20c5fcf7 AK |
1383 | } |
1384 | ||
2d6fcbf6 | 1385 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
095bbca6 | 1386 | goto_out; |
8c013da4 | 1387 | |
095bbca6 MB |
1388 | if (info.exists && !info.suspended && info.live_table) { |
1389 | r = 1; | |
1390 | goto out; | |
1391 | } | |
f4cbeaf0 | 1392 | |
9249fb12 ZK |
1393 | if (!lv_read_replicator_vgs(lv)) |
1394 | goto_out; | |
1395 | ||
c1fdeec9 MB |
1396 | lv_calculate_readahead(lv, NULL); |
1397 | ||
07d31831 AK |
1398 | if (exclusive) |
1399 | lv->status |= ACTIVATE_EXCL; | |
1400 | ||
b1bcff74 | 1401 | critical_section_inc(cmd); |
2d6fcbf6 | 1402 | if (!(r = _lv_activate_lv(lv, 0))) |
75b37a11 | 1403 | stack; |
b1bcff74 | 1404 | critical_section_dec(cmd); |
914c9723 | 1405 | |
2d6fcbf6 | 1406 | if (r && !monitor_dev_for_events(cmd, lv, 0, 1)) |
ed09d7e3 | 1407 | stack; |
15d91f5a | 1408 | |
095bbca6 | 1409 | out: |
9249fb12 ZK |
1410 | if (lv) { |
1411 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1412 | free_vg(lv->vg); |
9249fb12 | 1413 | } |
095bbca6 | 1414 | |
914c9723 | 1415 | return r; |
f4cbeaf0 | 1416 | } |
199e490e | 1417 | |
658b5812 | 1418 | /* Activate LV */ |
07d31831 | 1419 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1420 | { |
75b37a11 AK |
1421 | if (!_lv_activate(cmd, lvid_s, exclusive, 0)) |
1422 | return_0; | |
1423 | ||
1424 | return 1; | |
658b5812 AK |
1425 | } |
1426 | ||
1427 | /* Activate LV only if it passes filter */ | |
07d31831 | 1428 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1429 | { |
75b37a11 AK |
1430 | if (!_lv_activate(cmd, lvid_s, exclusive, 1)) |
1431 | return_0; | |
1432 | ||
1433 | return 1; | |
658b5812 AK |
1434 | } |
1435 | ||
f7dd6d84 AK |
1436 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) |
1437 | { | |
f7dd6d84 AK |
1438 | int r = 1; |
1439 | ||
8b076648 | 1440 | if (!lv) { |
2262b320 | 1441 | r = dm_mknodes(NULL); |
8b076648 AK |
1442 | fs_unlock(); |
1443 | return r; | |
1444 | } | |
1445 | ||
ab9663f3 MB |
1446 | if (!activation()) |
1447 | return 1; | |
f7dd6d84 | 1448 | |
ab9663f3 | 1449 | r = dev_manager_mknodes(lv); |
f7dd6d84 AK |
1450 | |
1451 | fs_unlock(); | |
1452 | ||
1453 | return r; | |
1454 | } | |
1455 | ||
352a99b9 AK |
1456 | /* |
1457 | * Does PV use VG somewhere in its construction? | |
1458 | * Returns 1 on failure. | |
1459 | */ | |
898e6f8e | 1460 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 1461 | struct volume_group *vg) |
352a99b9 | 1462 | { |
352a99b9 AK |
1463 | if (!activation()) |
1464 | return 0; | |
1465 | ||
1466 | if (!dm_is_dm_major(MAJOR(pv->dev->dev))) | |
1467 | return 0; | |
1468 | ||
898e6f8e | 1469 | return dev_manager_device_uses_vg(pv->dev, vg); |
352a99b9 AK |
1470 | } |
1471 | ||
2293567c AK |
1472 | void activation_release(void) |
1473 | { | |
1474 | dev_manager_release(); | |
1475 | } | |
1476 | ||
914c9723 AK |
1477 | void activation_exit(void) |
1478 | { | |
1479 | dev_manager_exit(); | |
1480 | } | |
199e490e | 1481 | #endif |