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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 | ||
401 | target = (void *) target + target->next; | |
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 | ||
2955b913 | 427 | ret = exec_cmd(cmd, argv, NULL); |
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; | |
463 | ||
2d6fcbf6 | 464 | if (!dev_manager_info(lv->vg->cmd->mem, lv, origin_only ? "real" : NULL, with_open_count, |
ab9663f3 | 465 | with_read_ahead, &dminfo, &info->read_ahead)) |
5f4b2acf | 466 | return_0; |
4a624ca0 | 467 | |
199e490e AK |
468 | info->exists = dminfo.exists; |
469 | info->suspended = dminfo.suspended; | |
470 | info->open_count = dminfo.open_count; | |
471 | info->major = dminfo.major; | |
472 | info->minor = dminfo.minor; | |
473 | info->read_only = dminfo.read_only; | |
5f4b2acf AK |
474 | info->live_table = dminfo.live_table; |
475 | info->inactive_table = dminfo.inactive_table; | |
199e490e | 476 | |
f894b4b1 | 477 | return 1; |
de6c9183 | 478 | } |
a62ee8ad | 479 | |
4bd9480d | 480 | int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 481 | unsigned origin_only, |
a6b22cf3 | 482 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
4bd9480d | 483 | { |
0548bcc2 | 484 | int r; |
4bd9480d AK |
485 | struct logical_volume *lv; |
486 | ||
7a593325 | 487 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
4bd9480d AK |
488 | return 0; |
489 | ||
2d6fcbf6 AK |
490 | if (!lv_is_origin(lv)) |
491 | origin_only = 0; | |
492 | ||
493 | r = lv_info(cmd, lv, origin_only, info, with_open_count, with_read_ahead); | |
2b82bd79 | 494 | free_vg(lv->vg); |
0548bcc2 MB |
495 | |
496 | return r; | |
4bd9480d AK |
497 | } |
498 | ||
d345bf2c PR |
499 | /* |
500 | * Returns 1 if percent set, else 0 on failure. | |
501 | */ | |
502 | int lv_check_transient(struct logical_volume *lv) | |
503 | { | |
504 | int r; | |
505 | struct dev_manager *dm; | |
506 | ||
507 | if (!activation()) | |
508 | return 0; | |
509 | ||
510 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) | |
511 | return_0; | |
512 | ||
513 | if (!(r = dev_manager_transient(dm, lv))) | |
514 | stack; | |
515 | ||
516 | dev_manager_destroy(dm); | |
517 | ||
518 | return r; | |
519 | } | |
520 | ||
1951dba9 AL |
521 | /* |
522 | * Returns 1 if percent set, else 0 on failure. | |
523 | */ | |
8191fe4f | 524 | int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent) |
1951dba9 AL |
525 | { |
526 | int r; | |
527 | struct dev_manager *dm; | |
528 | ||
d1d9800e AK |
529 | if (!activation()) |
530 | return 0; | |
531 | ||
5f4b2acf AK |
532 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
533 | return_0; | |
1951dba9 | 534 | |
8191fe4f | 535 | if (!(r = dev_manager_snapshot_percent(dm, lv, percent))) |
1951dba9 | 536 | stack; |
c826c0d1 | 537 | |
1951dba9 AL |
538 | dev_manager_destroy(dm); |
539 | ||
540 | return r; | |
541 | } | |
542 | ||
10b29b8d | 543 | /* FIXME Merge with snapshot_percent */ |
472ac5bd | 544 | int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, |
8191fe4f | 545 | int wait, percent_t *percent, uint32_t *event_nr) |
10b29b8d AK |
546 | { |
547 | int r; | |
548 | struct dev_manager *dm; | |
b65b777d | 549 | struct lvinfo info; |
10b29b8d | 550 | |
876003dc AK |
551 | /* If mirrored LV is temporarily shrinked to 1 area (= linear), |
552 | * it should be considered in-sync. */ | |
2c44337b | 553 | if (dm_list_size(&lv->segments) == 1 && first_seg(lv)->area_count == 1) { |
8191fe4f | 554 | *percent = PERCENT_100; |
876003dc AK |
555 | return 1; |
556 | } | |
557 | ||
10b29b8d AK |
558 | if (!activation()) |
559 | return 0; | |
560 | ||
2d6fcbf6 | 561 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
5f4b2acf | 562 | return_0; |
b65b777d AK |
563 | |
564 | if (!info.exists) | |
565 | return 0; | |
566 | ||
5f4b2acf AK |
567 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
568 | return_0; | |
10b29b8d | 569 | |
8191fe4f | 570 | if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent, event_nr))) |
10b29b8d AK |
571 | stack; |
572 | ||
573 | dev_manager_destroy(dm); | |
574 | ||
575 | return r; | |
576 | } | |
577 | ||
ab9663f3 | 578 | static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv) |
2ba80b43 | 579 | { |
199e490e | 580 | struct lvinfo info; |
2ba80b43 | 581 | |
2d6fcbf6 | 582 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) { |
2ba80b43 | 583 | stack; |
de6c9183 | 584 | return -1; |
2ba80b43 JT |
585 | } |
586 | ||
de6c9183 | 587 | return info.exists; |
2ba80b43 JT |
588 | } |
589 | ||
f894b4b1 | 590 | static int _lv_open_count(struct cmd_context *cmd, struct logical_volume *lv) |
5986ec94 | 591 | { |
199e490e | 592 | struct lvinfo info; |
5986ec94 | 593 | |
2d6fcbf6 | 594 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) { |
5986ec94 | 595 | stack; |
de6c9183 | 596 | return -1; |
5986ec94 JT |
597 | } |
598 | ||
de6c9183 | 599 | return info.open_count; |
5986ec94 JT |
600 | } |
601 | ||
2d6fcbf6 | 602 | static int _lv_activate_lv(struct logical_volume *lv, unsigned origin_only) |
b1713d28 | 603 | { |
6d52fb46 | 604 | int r; |
de6c9183 | 605 | struct dev_manager *dm; |
b1713d28 | 606 | |
5f4b2acf AK |
607 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
608 | return_0; | |
ae2bb665 | 609 | |
2d6fcbf6 | 610 | if (!(r = dev_manager_activate(dm, lv, origin_only))) |
6d52fb46 | 611 | stack; |
ae2bb665 | 612 | |
de6c9183 | 613 | dev_manager_destroy(dm); |
ae2bb665 | 614 | return r; |
b1713d28 | 615 | } |
a381c45a | 616 | |
2d6fcbf6 | 617 | static int _lv_preload(struct logical_volume *lv, unsigned origin_only, int *flush_required) |
0a5e4a14 | 618 | { |
de6c9183 JT |
619 | int r; |
620 | struct dev_manager *dm; | |
37ed70b9 | 621 | |
5f4b2acf AK |
622 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
623 | return_0; | |
624 | ||
2d6fcbf6 | 625 | if (!(r = dev_manager_preload(dm, lv, origin_only, flush_required))) |
6d52fb46 | 626 | stack; |
5f4b2acf AK |
627 | |
628 | dev_manager_destroy(dm); | |
629 | return r; | |
630 | } | |
631 | ||
632 | static int _lv_deactivate(struct logical_volume *lv) | |
633 | { | |
634 | int r; | |
635 | struct dev_manager *dm; | |
636 | ||
637 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) | |
638 | return_0; | |
37ed70b9 | 639 | |
de6c9183 | 640 | if (!(r = dev_manager_deactivate(dm, lv))) |
37ed70b9 | 641 | stack; |
37ed70b9 | 642 | |
de6c9183 JT |
643 | dev_manager_destroy(dm); |
644 | return r; | |
37ed70b9 JT |
645 | } |
646 | ||
2d6fcbf6 | 647 | static int _lv_suspend_lv(struct logical_volume *lv, unsigned origin_only, int lockfs, int flush_required) |
4a624ca0 | 648 | { |
20c5fcf7 AK |
649 | int r; |
650 | struct dev_manager *dm; | |
c2d72fd4 | 651 | |
5f4b2acf AK |
652 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
653 | return_0; | |
0a5e4a14 | 654 | |
2d6fcbf6 | 655 | if (!(r = dev_manager_suspend(dm, lv, origin_only, lockfs, flush_required))) |
37ed70b9 | 656 | stack; |
0a5e4a14 | 657 | |
20c5fcf7 AK |
658 | dev_manager_destroy(dm); |
659 | return r; | |
6d52fb46 | 660 | } |
4a624ca0 | 661 | |
8c013da4 | 662 | /* |
f75c11ed | 663 | * These two functions return the number of visible LVs in the state, |
8c013da4 AK |
664 | * or -1 on error. |
665 | */ | |
65752052 | 666 | int lvs_in_vg_activated(struct volume_group *vg) |
f047219b | 667 | { |
60f13f01 | 668 | struct lv_list *lvl; |
94b8220f | 669 | int count = 0; |
37ed70b9 | 670 | |
d1d9800e AK |
671 | if (!activation()) |
672 | return 0; | |
673 | ||
2c44337b | 674 | dm_list_iterate_items(lvl, &vg->lvs) { |
59d8429c | 675 | if (lv_is_visible(lvl->lv)) |
ab9663f3 | 676 | count += (_lv_active(vg->cmd, lvl->lv) == 1); |
37ed70b9 JT |
677 | } |
678 | ||
679 | return count; | |
f047219b | 680 | } |
2ba80b43 | 681 | |
08c9ff43 | 682 | int lvs_in_vg_opened(const struct volume_group *vg) |
2ba80b43 | 683 | { |
08c9ff43 | 684 | const struct lv_list *lvl; |
94b8220f | 685 | int count = 0; |
2ba80b43 | 686 | |
d1d9800e AK |
687 | if (!activation()) |
688 | return 0; | |
689 | ||
2c44337b | 690 | dm_list_iterate_items(lvl, &vg->lvs) { |
afd9ba98 | 691 | if (lv_is_visible(lvl->lv)) |
f894b4b1 | 692 | count += (_lv_open_count(vg->cmd, lvl->lv) > 0); |
2ba80b43 JT |
693 | } |
694 | ||
695 | return count; | |
696 | } | |
413cc918 | 697 | |
5ca6698f DW |
698 | /* |
699 | * Determine whether an LV is active locally or in a cluster. | |
700 | * Assumes vg lock held. | |
701 | * Returns: | |
702 | * 0 - not active locally or on any node in cluster | |
703 | * 1 - active either locally or some node in the cluster | |
704 | */ | |
705 | int lv_is_active(struct logical_volume *lv) | |
706 | { | |
6ac30c94 MB |
707 | int ret; |
708 | ||
ab9663f3 | 709 | if (_lv_active(lv->vg->cmd, lv)) |
5ca6698f DW |
710 | return 1; |
711 | ||
712 | if (!vg_is_clustered(lv->vg)) | |
713 | return 0; | |
714 | ||
6ac30c94 MB |
715 | if ((ret = remote_lock_held(lv->lvid.s)) >= 0) |
716 | return ret; | |
717 | ||
718 | /* | |
719 | * Old compatibility code if locking doesn't support lock query | |
720 | * FIXME: check status to not deactivate already activate device | |
721 | */ | |
722 | if (activate_lv_excl(lv->vg->cmd, lv)) { | |
56b3d204 MS |
723 | if (!deactivate_lv(lv->vg->cmd, lv)) |
724 | stack; | |
25a2e7b8 | 725 | return 0; |
6ac30c94 MB |
726 | } |
727 | ||
728 | /* | |
729 | * Exclusive local activation failed so assume it is active elsewhere. | |
730 | */ | |
731 | return 1; | |
5ca6698f DW |
732 | } |
733 | ||
d1e8046f AK |
734 | #ifdef DMEVENTD |
735 | static struct dm_event_handler *_create_dm_event_handler(struct cmd_context *cmd, const char *dmuuid, const char *dso, | |
736 | const int timeout, enum dm_event_mask mask) | |
737 | { | |
738 | struct dm_event_handler *dmevh; | |
739 | ||
740 | if (!(dmevh = dm_event_handler_create())) | |
741 | return_NULL; | |
742 | ||
743 | if (dm_event_handler_set_dmeventd_path(dmevh, find_config_tree_str(cmd, "dmeventd/executable", NULL))) | |
744 | goto_bad; | |
745 | ||
746 | if (dm_event_handler_set_dso(dmevh, dso)) | |
747 | goto_bad; | |
748 | ||
749 | if (dm_event_handler_set_uuid(dmevh, dmuuid)) | |
750 | goto_bad; | |
751 | ||
752 | dm_event_handler_set_timeout(dmevh, timeout); | |
753 | dm_event_handler_set_event_mask(dmevh, mask); | |
754 | ||
755 | return dmevh; | |
756 | ||
757 | bad: | |
758 | dm_event_handler_destroy(dmevh); | |
759 | return NULL; | |
760 | } | |
761 | ||
762 | char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath) | |
763 | { | |
764 | char *path; | |
765 | ||
766 | if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) { | |
767 | log_error("Failed to allocate dmeventd library path."); | |
768 | return NULL; | |
769 | } | |
770 | ||
771 | get_shared_library_path(cmd, libpath, path, PATH_MAX); | |
772 | ||
773 | return path; | |
774 | } | |
775 | ||
f92b4f94 AK |
776 | int target_registered_with_dmeventd(struct cmd_context *cmd, const char *dso, |
777 | struct logical_volume *lv, int *pending) | |
d1e8046f AK |
778 | { |
779 | char *uuid; | |
780 | enum dm_event_mask evmask = 0; | |
781 | struct dm_event_handler *dmevh; | |
782 | ||
783 | *pending = 0; | |
784 | ||
785 | if (!dso) | |
786 | return_0; | |
787 | ||
f92b4f94 AK |
788 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
789 | if (!(uuid = build_dm_uuid(cmd->mem, lv->lvid.s, lv_is_origin(lv) ? "real" : NULL))) | |
d1e8046f AK |
790 | return_0; |
791 | ||
792 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, 0, DM_EVENT_ALL_ERRORS))) | |
793 | return_0; | |
794 | ||
795 | if (dm_event_get_registered_device(dmevh, 0)) { | |
796 | dm_event_handler_destroy(dmevh); | |
797 | return 0; | |
798 | } | |
799 | ||
800 | evmask = dm_event_handler_get_event_mask(dmevh); | |
801 | if (evmask & DM_EVENT_REGISTRATION_PENDING) { | |
802 | *pending = 1; | |
803 | evmask &= ~DM_EVENT_REGISTRATION_PENDING; | |
804 | } | |
805 | ||
806 | dm_event_handler_destroy(dmevh); | |
807 | ||
808 | return evmask; | |
809 | } | |
810 | ||
f92b4f94 | 811 | int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv, |
d1e8046f AK |
812 | int evmask __attribute__((unused)), int set, int timeout) |
813 | { | |
814 | char *uuid; | |
815 | struct dm_event_handler *dmevh; | |
816 | int r; | |
817 | ||
818 | if (!dso) | |
819 | return_0; | |
820 | ||
f92b4f94 AK |
821 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
822 | if (!(uuid = build_dm_uuid(cmd->mem, lv->lvid.s, lv_is_origin(lv) ? "real" : NULL))) | |
d1e8046f AK |
823 | return_0; |
824 | ||
825 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, timeout, | |
826 | DM_EVENT_ALL_ERRORS | (timeout ? DM_EVENT_TIMEOUT : 0)))) | |
827 | return_0; | |
828 | ||
829 | r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh); | |
830 | ||
831 | dm_event_handler_destroy(dmevh); | |
832 | ||
833 | if (!r) | |
834 | return_0; | |
835 | ||
836 | log_info("%s %s for events", set ? "Monitored" : "Unmonitored", uuid); | |
837 | ||
838 | return 1; | |
839 | } | |
840 | ||
841 | #endif | |
842 | ||
3e3d5d85 | 843 | /* |
8a37910d AK |
844 | * Returns 0 if an attempt to (un)monitor the device failed. |
845 | * Returns 1 otherwise. | |
3e3d5d85 | 846 | */ |
2d6fcbf6 AK |
847 | int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv, |
848 | unsigned origin_only, int monitor) | |
15d91f5a | 849 | { |
ed09d7e3 | 850 | #ifdef DMEVENTD |
8a37910d AK |
851 | int i, pending = 0, monitored; |
852 | int r = 1; | |
2c44337b | 853 | struct dm_list *tmp, *snh, *snht; |
15d91f5a | 854 | struct lv_segment *seg; |
7a369d37 | 855 | struct lv_segment *log_seg; |
24f4552b | 856 | int (*monitor_fn) (struct lv_segment *s, int e); |
4e9083db | 857 | uint32_t s; |
15d91f5a | 858 | |
20db8ffc AK |
859 | /* skip dmeventd code altogether */ |
860 | if (dmeventd_monitor_mode() == DMEVENTD_MONITOR_IGNORE) | |
861 | return 1; | |
862 | ||
8a37910d AK |
863 | /* |
864 | * Nothing to do if dmeventd configured not to be used. | |
865 | */ | |
866 | if (monitor && !dmeventd_monitor_mode()) | |
3e3d5d85 AK |
867 | return 1; |
868 | ||
67961c7c PR |
869 | /* |
870 | * In case of a snapshot device, we monitor lv->snapshot->lv, | |
871 | * not the actual LV itself. | |
872 | */ | |
c79b4251 | 873 | if (lv_is_cow(lv) && !lv_is_merging_cow(lv)) |
2d6fcbf6 | 874 | return monitor_dev_for_events(cmd, lv->snapshot->lv, 0, monitor); |
67961c7c PR |
875 | |
876 | /* | |
877 | * In case this LV is a snapshot origin, we instead monitor | |
f92b4f94 AK |
878 | * each of its respective snapshots. The origin itself may |
879 | * also need to be monitored if it is a mirror, for example. | |
67961c7c | 880 | */ |
2d6fcbf6 | 881 | if (!origin_only && lv_is_origin(lv)) |
2c44337b AK |
882 | dm_list_iterate_safe(snh, snht, &lv->snapshot_segs) |
883 | if (!monitor_dev_for_events(cmd, dm_list_struct_base(snh, | |
2d6fcbf6 | 884 | struct lv_segment, origin_list)->cow, 0, monitor)) |
0c06de63 | 885 | r = 0; |
67961c7c | 886 | |
7a369d37 JEB |
887 | /* |
888 | * If the volume is mirrored and its log is also mirrored, monitor | |
889 | * the log volume as well. | |
890 | */ | |
891 | if ((seg = first_seg(lv)) != NULL && seg->log_lv != NULL && | |
892 | (log_seg = first_seg(seg->log_lv)) != NULL && | |
893 | seg_is_mirrored(log_seg)) | |
2d6fcbf6 | 894 | if (!monitor_dev_for_events(cmd, seg->log_lv, 0, monitor)) |
7a369d37 JEB |
895 | r = 0; |
896 | ||
2c44337b AK |
897 | dm_list_iterate(tmp, &lv->segments) { |
898 | seg = dm_list_item(tmp, struct lv_segment); | |
15d91f5a | 899 | |
4e9083db AK |
900 | /* Recurse for AREA_LV */ |
901 | for (s = 0; s < seg->area_count; s++) { | |
902 | if (seg_type(seg, s) != AREA_LV) | |
903 | continue; | |
2d6fcbf6 | 904 | if (!monitor_dev_for_events(cmd, seg_lv(seg, s), 0, |
4e9083db AK |
905 | monitor)) { |
906 | log_error("Failed to %smonitor %s", | |
907 | monitor ? "" : "un", | |
908 | seg_lv(seg, s)->name); | |
909 | r = 0; | |
910 | } | |
911 | } | |
912 | ||
8ef6eb30 AK |
913 | if (!seg_monitored(seg) || (seg->status & PVMOVE)) |
914 | continue; | |
8a37910d AK |
915 | |
916 | monitor_fn = NULL; | |
ed09d7e3 | 917 | |
8ef6eb30 | 918 | /* Check monitoring status */ |
8a37910d AK |
919 | if (seg->segtype->ops->target_monitored) |
920 | monitored = seg->segtype->ops->target_monitored(seg, &pending); | |
8ef6eb30 AK |
921 | else |
922 | continue; /* segtype doesn't support registration */ | |
923 | ||
924 | /* | |
925 | * FIXME: We should really try again if pending | |
926 | */ | |
8a37910d | 927 | monitored = (pending) ? 0 : monitored; |
8ef6eb30 | 928 | |
8a37910d AK |
929 | if (monitor) { |
930 | if (monitored) | |
8ef6eb30 | 931 | log_verbose("%s/%s already monitored.", lv->vg->name, lv->name); |
8a37910d AK |
932 | else if (seg->segtype->ops->target_monitor_events) |
933 | monitor_fn = seg->segtype->ops->target_monitor_events; | |
8ef6eb30 | 934 | } else { |
8a37910d | 935 | if (!monitored) |
8ef6eb30 | 936 | log_verbose("%s/%s already not monitored.", lv->vg->name, lv->name); |
8a37910d AK |
937 | else if (seg->segtype->ops->target_unmonitor_events) |
938 | monitor_fn = seg->segtype->ops->target_unmonitor_events; | |
8ef6eb30 | 939 | } |
15d91f5a | 940 | |
8ef6eb30 | 941 | /* Do [un]monitor */ |
8a37910d | 942 | if (!monitor_fn) |
3e3d5d85 | 943 | continue; |
e24e7130 | 944 | |
85a80e05 AK |
945 | log_verbose("%sonitoring %s/%s%s", monitor ? "M" : "Not m", lv->vg->name, lv->name, |
946 | test_mode() ? " [Test mode: skipping this]" : ""); | |
947 | ||
948 | /* FIXME Test mode should really continue a bit further. */ | |
949 | if (test_mode()) | |
950 | continue; | |
8a37910d | 951 | |
3e3d5d85 | 952 | /* FIXME specify events */ |
57fc4cc0 | 953 | if (!monitor_fn(seg, 0)) { |
8a37910d AK |
954 | log_error("%s/%s: %s segment monitoring function failed.", |
955 | lv->vg->name, lv->name, seg->segtype->name); | |
956 | return 0; | |
e24e7130 | 957 | } |
3e3d5d85 | 958 | |
8ef6eb30 AK |
959 | /* Check [un]monitor results */ |
960 | /* Try a couple times if pending, but not forever... */ | |
961 | for (i = 0; i < 10; i++) { | |
962 | pending = 0; | |
8a37910d | 963 | monitored = seg->segtype->ops->target_monitored(seg, &pending); |
8ef6eb30 | 964 | if (pending || |
8a37910d AK |
965 | (!monitored && monitor) || |
966 | (monitored && !monitor)) | |
967 | log_very_verbose("%s/%s %smonitoring still pending: waiting...", | |
968 | lv->vg->name, lv->name, monitor ? "" : "un"); | |
8ef6eb30 AK |
969 | else |
970 | break; | |
971 | sleep(1); | |
972 | } | |
973 | ||
85a80e05 AK |
974 | if (r) |
975 | r = (monitored && monitor) || (!monitored && !monitor); | |
15d91f5a | 976 | } |
e6493477 | 977 | |
3e3d5d85 AK |
978 | return r; |
979 | #else | |
15d91f5a | 980 | return 1; |
3e3d5d85 | 981 | #endif |
15d91f5a | 982 | } |
15d91f5a | 983 | |
658b5812 | 984 | static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 985 | unsigned origin_only, int error_if_not_suspended) |
413cc918 | 986 | { |
095bbca6 | 987 | struct logical_volume *lv = NULL, *lv_pre = NULL; |
199e490e | 988 | struct lvinfo info; |
eb91c4ee | 989 | int r = 0, lockfs = 0, flush_required = 0; |
413cc918 | 990 | |
d1d9800e AK |
991 | if (!activation()) |
992 | return 1; | |
993 | ||
8b888354 | 994 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 995 | goto_out; |
8b888354 | 996 | |
7a593325 | 997 | /* Use precommitted metadata if present */ |
8b888354 | 998 | if (!(lv_pre = lv_from_lvid(cmd, lvid_s, 1))) |
095bbca6 | 999 | goto_out; |
413cc918 | 1000 | |
2d6fcbf6 AK |
1001 | /* Ignore origin_only unless LV is origin in both old and new metadata */ |
1002 | if (!lv_is_origin(lv) || !lv_is_origin(lv_pre)) | |
1003 | origin_only = 0; | |
1004 | ||
20c5fcf7 | 1005 | if (test_mode()) { |
2d6fcbf6 | 1006 | _skip("Suspending %s%s.", lv->name, origin_only ? " origin without snapshots" : ""); |
095bbca6 MB |
1007 | r = 1; |
1008 | goto out; | |
20c5fcf7 AK |
1009 | } |
1010 | ||
2d6fcbf6 | 1011 | if (!lv_info(cmd, lv, origin_only, &info, 0, 0)) |
095bbca6 | 1012 | goto_out; |
41967a02 | 1013 | |
095bbca6 | 1014 | if (!info.exists || info.suspended) { |
63ae0d14 MB |
1015 | if (!error_if_not_suspended) { |
1016 | r = 1; | |
1017 | if (info.suspended) | |
18b82048 | 1018 | memlock_inc(cmd); |
63ae0d14 | 1019 | } |
095bbca6 MB |
1020 | goto out; |
1021 | } | |
914c9723 | 1022 | |
9249fb12 ZK |
1023 | if (!lv_read_replicator_vgs(lv)) |
1024 | goto_out; | |
1025 | ||
c1fdeec9 MB |
1026 | lv_calculate_readahead(lv, NULL); |
1027 | ||
5f4b2acf | 1028 | /* If VG was precommitted, preload devices for the LV */ |
8b888354 | 1029 | if ((lv_pre->vg->status & PRECOMMITTED)) { |
2d6fcbf6 | 1030 | if (!_lv_preload(lv_pre, origin_only, &flush_required)) { |
5f4b2acf | 1031 | /* FIXME Revert preloading */ |
095bbca6 | 1032 | goto_out; |
5f4b2acf AK |
1033 | } |
1034 | } | |
1035 | ||
2d6fcbf6 | 1036 | if (!monitor_dev_for_events(cmd, lv, origin_only, 0)) |
e24e7130 | 1037 | /* FIXME Consider aborting here */ |
ed09d7e3 AK |
1038 | stack; |
1039 | ||
18b82048 | 1040 | memlock_inc(cmd); |
9cd3426d | 1041 | |
2d6fcbf6 AK |
1042 | if (!origin_only && |
1043 | (lv_is_origin(lv_pre) || lv_is_cow(lv_pre))) | |
9cd3426d AK |
1044 | lockfs = 1; |
1045 | ||
2d6fcbf6 | 1046 | if (!_lv_suspend_lv(lv, origin_only, lockfs, flush_required)) { |
18b82048 | 1047 | memlock_dec(cmd); |
914c9723 | 1048 | fs_unlock(); |
095bbca6 | 1049 | goto out; |
914c9723 | 1050 | } |
8c013da4 | 1051 | |
095bbca6 MB |
1052 | r = 1; |
1053 | out: | |
1054 | if (lv_pre) | |
2b82bd79 | 1055 | free_vg(lv_pre->vg); |
9249fb12 ZK |
1056 | if (lv) { |
1057 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1058 | free_vg(lv->vg); |
9249fb12 | 1059 | } |
095bbca6 MB |
1060 | |
1061 | return r; | |
413cc918 AK |
1062 | } |
1063 | ||
658b5812 | 1064 | /* Returns success if the device is not active */ |
2d6fcbf6 | 1065 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1066 | { |
2d6fcbf6 | 1067 | return _lv_suspend(cmd, lvid_s, origin_only, 0); |
658b5812 AK |
1068 | } |
1069 | ||
2d6fcbf6 AK |
1070 | /* No longer used */ |
1071 | /*********** | |
658b5812 AK |
1072 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
1073 | { | |
1074 | return _lv_suspend(cmd, lvid_s, 1); | |
1075 | } | |
2d6fcbf6 | 1076 | ***********/ |
658b5812 AK |
1077 | |
1078 | static int _lv_resume(struct cmd_context *cmd, const char *lvid_s, | |
2d6fcbf6 | 1079 | unsigned origin_only, |
658b5812 | 1080 | int error_if_not_active) |
413cc918 AK |
1081 | { |
1082 | struct logical_volume *lv; | |
199e490e | 1083 | struct lvinfo info; |
095bbca6 | 1084 | int r = 0; |
413cc918 | 1085 | |
d1d9800e AK |
1086 | if (!activation()) |
1087 | return 1; | |
1088 | ||
7a593325 | 1089 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
75b37a11 | 1090 | goto_out; |
413cc918 | 1091 | |
2d6fcbf6 AK |
1092 | if (!lv_is_origin(lv)) |
1093 | origin_only = 0; | |
1094 | ||
20c5fcf7 | 1095 | if (test_mode()) { |
2d6fcbf6 | 1096 | _skip("Resuming %s%s.", lv->name, origin_only ? " without snapshots" : ""); |
095bbca6 MB |
1097 | r = 1; |
1098 | goto out; | |
20c5fcf7 AK |
1099 | } |
1100 | ||
2d6fcbf6 | 1101 | if (!lv_info(cmd, lv, origin_only, &info, 0, 0)) |
095bbca6 | 1102 | goto_out; |
41967a02 | 1103 | |
095bbca6 | 1104 | if (!info.exists || !info.suspended) { |
4ec2ae86 ZK |
1105 | if (error_if_not_active) |
1106 | goto_out; | |
1107 | r = 1; | |
1108 | goto out; | |
095bbca6 | 1109 | } |
914c9723 | 1110 | |
2d6fcbf6 | 1111 | if (!_lv_activate_lv(lv, origin_only)) |
75b37a11 | 1112 | goto_out; |
914c9723 | 1113 | |
18b82048 | 1114 | memlock_dec(cmd); |
914c9723 | 1115 | fs_unlock(); |
413cc918 | 1116 | |
2d6fcbf6 | 1117 | if (!monitor_dev_for_events(cmd, lv, origin_only, 1)) |
ed09d7e3 | 1118 | stack; |
15d91f5a | 1119 | |
095bbca6 MB |
1120 | r = 1; |
1121 | out: | |
1122 | if (lv) | |
2b82bd79 | 1123 | free_vg(lv->vg); |
095bbca6 MB |
1124 | |
1125 | return r; | |
413cc918 AK |
1126 | } |
1127 | ||
658b5812 | 1128 | /* Returns success if the device is not active */ |
2d6fcbf6 | 1129 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1130 | { |
2d6fcbf6 | 1131 | return _lv_resume(cmd, lvid_s, origin_only, 0); |
658b5812 AK |
1132 | } |
1133 | ||
2d6fcbf6 | 1134 | int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1135 | { |
2d6fcbf6 | 1136 | return _lv_resume(cmd, lvid_s, origin_only, 1); |
658b5812 AK |
1137 | } |
1138 | ||
64a95010 AK |
1139 | static int _lv_has_open_snapshots(struct logical_volume *lv) |
1140 | { | |
1141 | struct lv_segment *snap_seg; | |
1142 | struct lvinfo info; | |
1143 | int r = 0; | |
1144 | ||
1145 | dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list) { | |
2d6fcbf6 | 1146 | if (!lv_info(lv->vg->cmd, snap_seg->cow, 0, &info, 1, 0)) { |
64a95010 AK |
1147 | r = 1; |
1148 | continue; | |
1149 | } | |
1150 | ||
1151 | if (info.exists && info.open_count) { | |
1152 | log_error("LV %s/%s has open snapshot %s: " | |
1153 | "not deactivating", lv->vg->name, lv->name, | |
1154 | snap_seg->cow->name); | |
1155 | r = 1; | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | return r; | |
1160 | } | |
1161 | ||
be326a2f | 1162 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) |
f4cbeaf0 AK |
1163 | { |
1164 | struct logical_volume *lv; | |
199e490e | 1165 | struct lvinfo info; |
095bbca6 | 1166 | int r = 0; |
f4cbeaf0 | 1167 | |
d1d9800e AK |
1168 | if (!activation()) |
1169 | return 1; | |
1170 | ||
7a593325 | 1171 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1172 | goto out; |
f4cbeaf0 | 1173 | |
20c5fcf7 AK |
1174 | if (test_mode()) { |
1175 | _skip("Deactivating '%s'.", lv->name); | |
095bbca6 MB |
1176 | r = 1; |
1177 | goto out; | |
20c5fcf7 AK |
1178 | } |
1179 | ||
2d6fcbf6 | 1180 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) |
095bbca6 | 1181 | goto_out; |
41967a02 | 1182 | |
095bbca6 MB |
1183 | if (!info.exists) { |
1184 | r = 1; | |
1185 | goto out; | |
1186 | } | |
f4cbeaf0 | 1187 | |
64a95010 AK |
1188 | if (lv_is_visible(lv)) { |
1189 | if (info.open_count) { | |
1190 | log_error("LV %s/%s in use: not deactivating", | |
1191 | lv->vg->name, lv->name); | |
1192 | goto out; | |
1193 | } | |
1194 | if (lv_is_origin(lv) && _lv_has_open_snapshots(lv)) | |
1195 | goto_out; | |
0cf96f33 AK |
1196 | } |
1197 | ||
9249fb12 ZK |
1198 | if (!lv_read_replicator_vgs(lv)) |
1199 | goto_out; | |
1200 | ||
c1fdeec9 MB |
1201 | lv_calculate_readahead(lv, NULL); |
1202 | ||
2d6fcbf6 | 1203 | if (!monitor_dev_for_events(cmd, lv, 0, 0)) |
ed09d7e3 | 1204 | stack; |
15d91f5a | 1205 | |
18b82048 | 1206 | memlock_inc(cmd); |
914c9723 | 1207 | r = _lv_deactivate(lv); |
18b82048 | 1208 | memlock_dec(cmd); |
914c9723 AK |
1209 | fs_unlock(); |
1210 | ||
2d6fcbf6 | 1211 | if (!lv_info(cmd, lv, 0, &info, 1, 0) || info.exists) |
89a6cdfd | 1212 | r = 0; |
095bbca6 | 1213 | out: |
9249fb12 ZK |
1214 | if (lv) { |
1215 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1216 | free_vg(lv->vg); |
9249fb12 | 1217 | } |
095bbca6 | 1218 | |
914c9723 | 1219 | return r; |
f4cbeaf0 AK |
1220 | } |
1221 | ||
658b5812 AK |
1222 | /* Test if LV passes filter */ |
1223 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, | |
1224 | int *activate_lv) | |
1225 | { | |
1226 | struct logical_volume *lv; | |
095bbca6 | 1227 | int r = 0; |
658b5812 | 1228 | |
095bbca6 MB |
1229 | if (!activation()) { |
1230 | *activate_lv = 1; | |
1231 | return 1; | |
1232 | } | |
658b5812 | 1233 | |
424dd43e | 1234 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1235 | goto out; |
658b5812 AK |
1236 | |
1237 | if (!_passes_activation_filter(cmd, lv)) { | |
f7e3a19f PR |
1238 | log_verbose("Not activating %s/%s since it does not pass " |
1239 | "activation filter.", lv->vg->name, lv->name); | |
658b5812 | 1240 | *activate_lv = 0; |
095bbca6 MB |
1241 | } else |
1242 | *activate_lv = 1; | |
1243 | r = 1; | |
1244 | out: | |
1245 | if (lv) | |
2b82bd79 | 1246 | free_vg(lv->vg); |
658b5812 | 1247 | |
095bbca6 | 1248 | return r; |
658b5812 AK |
1249 | } |
1250 | ||
07d31831 AK |
1251 | static int _lv_activate(struct cmd_context *cmd, const char *lvid_s, |
1252 | int exclusive, int filter) | |
f4cbeaf0 AK |
1253 | { |
1254 | struct logical_volume *lv; | |
199e490e | 1255 | struct lvinfo info; |
095bbca6 | 1256 | int r = 0; |
f4cbeaf0 | 1257 | |
d1d9800e AK |
1258 | if (!activation()) |
1259 | return 1; | |
1260 | ||
424dd43e | 1261 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1262 | goto out; |
f4cbeaf0 | 1263 | |
658b5812 | 1264 | if (filter && !_passes_activation_filter(cmd, lv)) { |
f7e3a19f PR |
1265 | log_error("Not activating %s/%s since it does not pass " |
1266 | "activation filter.", lv->vg->name, lv->name); | |
095bbca6 | 1267 | goto out; |
de17d760 AK |
1268 | } |
1269 | ||
cda35408 | 1270 | if ((!lv->vg->cmd->partial_activation) && (lv->status & PARTIAL_LV)) { |
8c5bcdab AK |
1271 | log_error("Refusing activation of partial LV %s. Use --partial to override.", |
1272 | lv->name); | |
095bbca6 | 1273 | goto_out; |
8c5bcdab AK |
1274 | } |
1275 | ||
b4048242 PR |
1276 | if (lv_has_unknown_segments(lv)) { |
1277 | log_error("Refusing activation of LV %s containing " | |
1278 | "an unrecognised segment.", lv->name); | |
1279 | goto_out; | |
1280 | } | |
1281 | ||
20c5fcf7 AK |
1282 | if (test_mode()) { |
1283 | _skip("Activating '%s'.", lv->name); | |
095bbca6 MB |
1284 | r = 1; |
1285 | goto out; | |
20c5fcf7 AK |
1286 | } |
1287 | ||
2d6fcbf6 | 1288 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
095bbca6 | 1289 | goto_out; |
8c013da4 | 1290 | |
095bbca6 MB |
1291 | if (info.exists && !info.suspended && info.live_table) { |
1292 | r = 1; | |
1293 | goto out; | |
1294 | } | |
f4cbeaf0 | 1295 | |
9249fb12 ZK |
1296 | if (!lv_read_replicator_vgs(lv)) |
1297 | goto_out; | |
1298 | ||
c1fdeec9 MB |
1299 | lv_calculate_readahead(lv, NULL); |
1300 | ||
07d31831 AK |
1301 | if (exclusive) |
1302 | lv->status |= ACTIVATE_EXCL; | |
1303 | ||
18b82048 | 1304 | memlock_inc(cmd); |
2d6fcbf6 | 1305 | if (!(r = _lv_activate_lv(lv, 0))) |
75b37a11 | 1306 | stack; |
18b82048 | 1307 | memlock_dec(cmd); |
914c9723 AK |
1308 | fs_unlock(); |
1309 | ||
2d6fcbf6 | 1310 | if (r && !monitor_dev_for_events(cmd, lv, 0, 1)) |
ed09d7e3 | 1311 | stack; |
15d91f5a | 1312 | |
095bbca6 | 1313 | out: |
9249fb12 ZK |
1314 | if (lv) { |
1315 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1316 | free_vg(lv->vg); |
9249fb12 | 1317 | } |
095bbca6 | 1318 | |
914c9723 | 1319 | return r; |
f4cbeaf0 | 1320 | } |
199e490e | 1321 | |
658b5812 | 1322 | /* Activate LV */ |
07d31831 | 1323 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1324 | { |
75b37a11 AK |
1325 | if (!_lv_activate(cmd, lvid_s, exclusive, 0)) |
1326 | return_0; | |
1327 | ||
1328 | return 1; | |
658b5812 AK |
1329 | } |
1330 | ||
1331 | /* Activate LV only if it passes filter */ | |
07d31831 | 1332 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1333 | { |
75b37a11 AK |
1334 | if (!_lv_activate(cmd, lvid_s, exclusive, 1)) |
1335 | return_0; | |
1336 | ||
1337 | return 1; | |
658b5812 AK |
1338 | } |
1339 | ||
f7dd6d84 AK |
1340 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) |
1341 | { | |
f7dd6d84 AK |
1342 | int r = 1; |
1343 | ||
8b076648 | 1344 | if (!lv) { |
2262b320 | 1345 | r = dm_mknodes(NULL); |
8b076648 AK |
1346 | fs_unlock(); |
1347 | return r; | |
1348 | } | |
1349 | ||
ab9663f3 MB |
1350 | if (!activation()) |
1351 | return 1; | |
f7dd6d84 | 1352 | |
ab9663f3 | 1353 | r = dev_manager_mknodes(lv); |
f7dd6d84 AK |
1354 | |
1355 | fs_unlock(); | |
1356 | ||
1357 | return r; | |
1358 | } | |
1359 | ||
352a99b9 AK |
1360 | /* |
1361 | * Does PV use VG somewhere in its construction? | |
1362 | * Returns 1 on failure. | |
1363 | */ | |
898e6f8e | 1364 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 1365 | struct volume_group *vg) |
352a99b9 | 1366 | { |
352a99b9 AK |
1367 | if (!activation()) |
1368 | return 0; | |
1369 | ||
1370 | if (!dm_is_dm_major(MAJOR(pv->dev->dev))) | |
1371 | return 0; | |
1372 | ||
898e6f8e | 1373 | return dev_manager_device_uses_vg(pv->dev, vg); |
352a99b9 AK |
1374 | } |
1375 | ||
2293567c AK |
1376 | void activation_release(void) |
1377 | { | |
1378 | dev_manager_release(); | |
1379 | } | |
1380 | ||
914c9723 AK |
1381 | void activation_exit(void) |
1382 | { | |
1383 | dev_manager_exit(); | |
1384 | } | |
199e490e | 1385 | #endif |