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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 | } | |
78ad1549 AK |
161 | int lv_snapshot_percent(const struct logical_volume *lv, float *percent, |
162 | percent_range_t *percent_range) | |
199e490e AK |
163 | { |
164 | return 0; | |
165 | } | |
472ac5bd | 166 | int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, |
78ad1549 AK |
167 | int wait, float *percent, percent_range_t *percent_range, |
168 | uint32_t *event_nr) | |
10b29b8d AK |
169 | { |
170 | return 0; | |
171 | } | |
199e490e AK |
172 | int lvs_in_vg_activated(struct volume_group *vg) |
173 | { | |
174 | return 0; | |
175 | } | |
176 | int lvs_in_vg_opened(struct volume_group *vg) | |
177 | { | |
178 | return 0; | |
179 | } | |
2d6fcbf6 | 180 | /****** |
658b5812 AK |
181 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
182 | { | |
183 | return 1; | |
184 | } | |
2d6fcbf6 | 185 | *******/ |
199e490e AK |
186 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s) |
187 | { | |
188 | return 1; | |
189 | } | |
658b5812 AK |
190 | int lv_resume(struct cmd_context *cmd, const char *lvid_s) |
191 | { | |
192 | return 1; | |
193 | } | |
199e490e AK |
194 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s) |
195 | { | |
196 | return 1; | |
197 | } | |
198 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) | |
199 | { | |
200 | return 1; | |
201 | } | |
658b5812 AK |
202 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, |
203 | int *activate_lv) | |
204 | { | |
205 | return 1; | |
206 | } | |
07d31831 | 207 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
199e490e AK |
208 | { |
209 | return 1; | |
210 | } | |
07d31831 | 211 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 AK |
212 | { |
213 | return 1; | |
214 | } | |
f7dd6d84 AK |
215 | |
216 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) | |
217 | { | |
218 | return 1; | |
219 | } | |
220 | ||
0ce83a83 | 221 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 222 | struct volume_group *vg) |
352a99b9 AK |
223 | { |
224 | return 0; | |
225 | } | |
226 | ||
2293567c AK |
227 | void activation_release(void) |
228 | { | |
229 | return; | |
230 | } | |
231 | ||
914c9723 AK |
232 | void activation_exit(void) |
233 | { | |
234 | return; | |
235 | } | |
199e490e AK |
236 | |
237 | #else /* DEVMAPPER_SUPPORT */ | |
238 | ||
d1d9800e AK |
239 | static int _activation = 1; |
240 | ||
8ef2b021 | 241 | void set_activation(int act) |
d1d9800e | 242 | { |
8ef2b021 | 243 | if (act == _activation) |
d1d9800e AK |
244 | return; |
245 | ||
8ef2b021 | 246 | _activation = act; |
d1d9800e AK |
247 | if (_activation) |
248 | log_verbose("Activation enabled. Device-mapper kernel " | |
249 | "driver will be used."); | |
250 | else | |
e7ddf416 | 251 | log_warn("WARNING: Activation disabled. No device-mapper " |
bfe2b548 | 252 | "interaction will be attempted."); |
d1d9800e AK |
253 | } |
254 | ||
8ef2b021 | 255 | int activation(void) |
d1d9800e AK |
256 | { |
257 | return _activation; | |
258 | } | |
259 | ||
de17d760 AK |
260 | static int _passes_activation_filter(struct cmd_context *cmd, |
261 | struct logical_volume *lv) | |
262 | { | |
25579907 | 263 | const struct config_node *cn; |
de17d760 AK |
264 | struct config_value *cv; |
265 | char *str; | |
266 | char path[PATH_MAX]; | |
267 | ||
2293567c | 268 | if (!(cn = find_config_tree_node(cmd, "activation/volume_list"))) { |
fefa4323 | 269 | log_verbose("activation/volume_list configuration setting " |
3122f963 PR |
270 | "not defined, checking only host tags for %s/%s", |
271 | lv->vg->name, lv->name); | |
fefa4323 | 272 | |
25579907 | 273 | /* If no host tags defined, activate */ |
2c44337b | 274 | if (dm_list_empty(&cmd->tags)) |
de17d760 AK |
275 | return 1; |
276 | ||
277 | /* If any host tag matches any LV or VG tag, activate */ | |
278 | if (str_list_match_list(&cmd->tags, &lv->tags) || | |
279 | str_list_match_list(&cmd->tags, &lv->vg->tags)) | |
280 | return 1; | |
281 | ||
fefa4323 PR |
282 | log_verbose("No host tag matches %s/%s", |
283 | lv->vg->name, lv->name); | |
284 | ||
de17d760 AK |
285 | /* Don't activate */ |
286 | return 0; | |
287 | } | |
288 | ||
289 | for (cv = cn->v; cv; cv = cv->next) { | |
fefa4323 PR |
290 | log_verbose("activation/volume_list configuration setting " |
291 | "defined, checking the list to match %s/%s", | |
292 | lv->vg->name, lv->name); | |
293 | ||
de17d760 AK |
294 | if (cv->type != CFG_STRING) { |
295 | log_error("Ignoring invalid string in config file " | |
296 | "activation/volume_list"); | |
297 | continue; | |
298 | } | |
299 | str = cv->v.str; | |
300 | if (!*str) { | |
301 | log_error("Ignoring empty string in config file " | |
302 | "activation/volume_list"); | |
303 | continue; | |
304 | } | |
305 | ||
306 | /* Tag? */ | |
307 | if (*str == '@') { | |
308 | str++; | |
309 | if (!*str) { | |
310 | log_error("Ignoring empty tag in config file " | |
311 | "activation/volume_list"); | |
312 | continue; | |
313 | } | |
314 | /* If any host tag matches any LV or VG tag, activate */ | |
315 | if (!strcmp(str, "*")) { | |
316 | if (str_list_match_list(&cmd->tags, &lv->tags) | |
317 | || str_list_match_list(&cmd->tags, | |
318 | &lv->vg->tags)) | |
319 | return 1; | |
320 | else | |
321 | continue; | |
322 | } | |
323 | /* If supplied tag matches LV or VG tag, activate */ | |
324 | if (str_list_match_item(&lv->tags, str) || | |
325 | str_list_match_item(&lv->vg->tags, str)) | |
326 | return 1; | |
327 | else | |
328 | continue; | |
329 | } | |
13835b5f | 330 | if (!strchr(str, '/')) { |
de17d760 AK |
331 | /* vgname supplied */ |
332 | if (!strcmp(str, lv->vg->name)) | |
333 | return 1; | |
334 | else | |
335 | continue; | |
336 | } | |
337 | /* vgname/lvname */ | |
0550c1b6 | 338 | if (dm_snprintf(path, sizeof(path), "%s/%s", lv->vg->name, |
de17d760 | 339 | lv->name) < 0) { |
0550c1b6 | 340 | log_error("dm_snprintf error from %s/%s", lv->vg->name, |
de17d760 AK |
341 | lv->name); |
342 | continue; | |
343 | } | |
344 | if (!strcmp(path, str)) | |
345 | return 1; | |
346 | } | |
347 | ||
fefa4323 PR |
348 | log_verbose("No item supplied in activation/volume_list configuration " |
349 | "setting matches %s/%s", lv->vg->name, lv->name); | |
350 | ||
de17d760 AK |
351 | return 0; |
352 | } | |
353 | ||
fae0c576 AK |
354 | int library_version(char *version, size_t size) |
355 | { | |
d1d9800e AK |
356 | if (!activation()) |
357 | return 0; | |
358 | ||
f894b4b1 | 359 | return dm_get_library_version(version, size); |
fae0c576 AK |
360 | } |
361 | ||
fae0c576 AK |
362 | int driver_version(char *version, size_t size) |
363 | { | |
d1d9800e AK |
364 | if (!activation()) |
365 | return 0; | |
366 | ||
fae0c576 | 367 | log_very_verbose("Getting driver version"); |
fae0c576 | 368 | |
f894b4b1 | 369 | return dm_driver_version(version, size); |
fae0c576 AK |
370 | } |
371 | ||
bbf83db1 AK |
372 | int target_version(const char *target_name, uint32_t *maj, |
373 | uint32_t *min, uint32_t *patchlevel) | |
d1f4953a AK |
374 | { |
375 | int r = 0; | |
376 | struct dm_task *dmt; | |
377 | struct dm_versions *target, *last_target; | |
378 | ||
d1f4953a | 379 | log_very_verbose("Getting target version for %s", target_name); |
5f4b2acf AK |
380 | if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS))) |
381 | return_0; | |
d1f4953a AK |
382 | |
383 | if (!dm_task_run(dmt)) { | |
384 | log_debug("Failed to get %s target version", target_name); | |
385 | /* Assume this was because LIST_VERSIONS isn't supported */ | |
386 | return 1; | |
387 | } | |
388 | ||
389 | target = dm_task_get_versions(dmt); | |
390 | ||
391 | do { | |
392 | last_target = target; | |
393 | ||
394 | if (!strcmp(target_name, target->name)) { | |
395 | r = 1; | |
bbf83db1 AK |
396 | *maj = target->version[0]; |
397 | *min = target->version[1]; | |
398 | *patchlevel = target->version[2]; | |
d1f4953a AK |
399 | goto out; |
400 | } | |
401 | ||
402 | target = (void *) target + target->next; | |
403 | } while (last_target != target); | |
404 | ||
405 | out: | |
406 | dm_task_destroy(dmt); | |
407 | ||
408 | return r; | |
409 | } | |
410 | ||
ed82bfd2 | 411 | int module_present(struct cmd_context *cmd, const char *target_name) |
f894b4b1 | 412 | { |
5619c629 | 413 | int ret = 0; |
03b49fe1 | 414 | #ifdef MODPROBE_CMD |
f894b4b1 | 415 | char module[128]; |
c8669f6b | 416 | const char *argv[3]; |
5619c629 MB |
417 | |
418 | if (dm_snprintf(module, sizeof(module), "dm-%s", target_name) < 0) { | |
419 | log_error("module_present module name too long: %s", | |
420 | target_name); | |
421 | return 0; | |
422 | } | |
423 | ||
c8669f6b ZK |
424 | argv[0] = MODPROBE_CMD; |
425 | argv[1] = module; | |
426 | argv[2] = NULL; | |
427 | ||
2955b913 | 428 | ret = exec_cmd(cmd, argv, NULL); |
03b49fe1 | 429 | #endif |
5619c629 MB |
430 | return ret; |
431 | } | |
432 | ||
ed82bfd2 AK |
433 | int target_present(struct cmd_context *cmd, const char *target_name, |
434 | int use_modprobe) | |
5619c629 MB |
435 | { |
436 | uint32_t maj, min, patchlevel; | |
f894b4b1 AK |
437 | |
438 | if (!activation()) | |
439 | return 0; | |
440 | ||
441 | #ifdef MODPROBE_CMD | |
5f4b2acf | 442 | if (use_modprobe) { |
bbf83db1 | 443 | if (target_version(target_name, &maj, &min, &patchlevel)) |
5f4b2acf | 444 | return 1; |
f894b4b1 | 445 | |
ed82bfd2 | 446 | if (!module_present(cmd, target_name)) |
5f4b2acf | 447 | return_0; |
f894b4b1 AK |
448 | } |
449 | #endif | |
450 | ||
bbf83db1 | 451 | return target_version(target_name, &maj, &min, &patchlevel); |
f894b4b1 AK |
452 | } |
453 | ||
de6c9183 JT |
454 | /* |
455 | * Returns 1 if info structure populated, else 0 on failure. | |
456 | */ | |
2d6fcbf6 | 457 | int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, unsigned origin_only, |
ab9663f3 | 458 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
37ed70b9 | 459 | { |
199e490e | 460 | struct dm_info dminfo; |
4a624ca0 | 461 | |
d1d9800e AK |
462 | if (!activation()) |
463 | return 0; | |
464 | ||
2d6fcbf6 | 465 | if (!dev_manager_info(lv->vg->cmd->mem, lv, origin_only ? "real" : NULL, with_open_count, |
ab9663f3 | 466 | with_read_ahead, &dminfo, &info->read_ahead)) |
5f4b2acf | 467 | return_0; |
4a624ca0 | 468 | |
199e490e AK |
469 | info->exists = dminfo.exists; |
470 | info->suspended = dminfo.suspended; | |
471 | info->open_count = dminfo.open_count; | |
472 | info->major = dminfo.major; | |
473 | info->minor = dminfo.minor; | |
474 | info->read_only = dminfo.read_only; | |
5f4b2acf AK |
475 | info->live_table = dminfo.live_table; |
476 | info->inactive_table = dminfo.inactive_table; | |
199e490e | 477 | |
f894b4b1 | 478 | return 1; |
de6c9183 | 479 | } |
a62ee8ad | 480 | |
4bd9480d | 481 | int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 482 | unsigned origin_only, |
a6b22cf3 | 483 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
4bd9480d | 484 | { |
0548bcc2 | 485 | int r; |
4bd9480d AK |
486 | struct logical_volume *lv; |
487 | ||
7a593325 | 488 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
4bd9480d AK |
489 | return 0; |
490 | ||
2d6fcbf6 AK |
491 | if (!lv_is_origin(lv)) |
492 | origin_only = 0; | |
493 | ||
494 | r = lv_info(cmd, lv, origin_only, info, with_open_count, with_read_ahead); | |
0548bcc2 MB |
495 | vg_release(lv->vg); |
496 | ||
497 | return r; | |
4bd9480d AK |
498 | } |
499 | ||
d345bf2c PR |
500 | /* |
501 | * Returns 1 if percent set, else 0 on failure. | |
502 | */ | |
503 | int lv_check_transient(struct logical_volume *lv) | |
504 | { | |
505 | int r; | |
506 | struct dev_manager *dm; | |
507 | ||
508 | if (!activation()) | |
509 | return 0; | |
510 | ||
511 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) | |
512 | return_0; | |
513 | ||
514 | if (!(r = dev_manager_transient(dm, lv))) | |
515 | stack; | |
516 | ||
517 | dev_manager_destroy(dm); | |
518 | ||
519 | return r; | |
520 | } | |
521 | ||
1951dba9 AL |
522 | /* |
523 | * Returns 1 if percent set, else 0 on failure. | |
524 | */ | |
78ad1549 AK |
525 | int lv_snapshot_percent(const struct logical_volume *lv, float *percent, |
526 | percent_range_t *percent_range) | |
1951dba9 AL |
527 | { |
528 | int r; | |
529 | struct dev_manager *dm; | |
530 | ||
d1d9800e AK |
531 | if (!activation()) |
532 | return 0; | |
533 | ||
5f4b2acf AK |
534 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
535 | return_0; | |
1951dba9 | 536 | |
78ad1549 | 537 | if (!(r = dev_manager_snapshot_percent(dm, lv, percent, percent_range))) |
1951dba9 | 538 | stack; |
c826c0d1 | 539 | |
1951dba9 AL |
540 | dev_manager_destroy(dm); |
541 | ||
542 | return r; | |
543 | } | |
544 | ||
10b29b8d | 545 | /* FIXME Merge with snapshot_percent */ |
472ac5bd | 546 | int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, |
78ad1549 AK |
547 | int wait, float *percent, percent_range_t *percent_range, |
548 | uint32_t *event_nr) | |
10b29b8d AK |
549 | { |
550 | int r; | |
551 | struct dev_manager *dm; | |
b65b777d | 552 | struct lvinfo info; |
10b29b8d | 553 | |
876003dc AK |
554 | /* If mirrored LV is temporarily shrinked to 1 area (= linear), |
555 | * it should be considered in-sync. */ | |
2c44337b | 556 | if (dm_list_size(&lv->segments) == 1 && first_seg(lv)->area_count == 1) { |
876003dc AK |
557 | *percent = 100.0; |
558 | return 1; | |
559 | } | |
560 | ||
10b29b8d AK |
561 | if (!activation()) |
562 | return 0; | |
563 | ||
2d6fcbf6 | 564 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
5f4b2acf | 565 | return_0; |
b65b777d AK |
566 | |
567 | if (!info.exists) | |
568 | return 0; | |
569 | ||
5f4b2acf AK |
570 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
571 | return_0; | |
10b29b8d | 572 | |
78ad1549 AK |
573 | if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent, |
574 | percent_range, event_nr))) | |
10b29b8d AK |
575 | stack; |
576 | ||
577 | dev_manager_destroy(dm); | |
578 | ||
579 | return r; | |
580 | } | |
581 | ||
ab9663f3 | 582 | static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv) |
2ba80b43 | 583 | { |
199e490e | 584 | struct lvinfo info; |
2ba80b43 | 585 | |
2d6fcbf6 | 586 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) { |
2ba80b43 | 587 | stack; |
de6c9183 | 588 | return -1; |
2ba80b43 JT |
589 | } |
590 | ||
de6c9183 | 591 | return info.exists; |
2ba80b43 JT |
592 | } |
593 | ||
f894b4b1 | 594 | static int _lv_open_count(struct cmd_context *cmd, struct logical_volume *lv) |
5986ec94 | 595 | { |
199e490e | 596 | struct lvinfo info; |
5986ec94 | 597 | |
2d6fcbf6 | 598 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) { |
5986ec94 | 599 | stack; |
de6c9183 | 600 | return -1; |
5986ec94 JT |
601 | } |
602 | ||
de6c9183 | 603 | return info.open_count; |
5986ec94 JT |
604 | } |
605 | ||
2d6fcbf6 | 606 | static int _lv_activate_lv(struct logical_volume *lv, unsigned origin_only) |
b1713d28 | 607 | { |
6d52fb46 | 608 | int r; |
de6c9183 | 609 | struct dev_manager *dm; |
b1713d28 | 610 | |
5f4b2acf AK |
611 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
612 | return_0; | |
ae2bb665 | 613 | |
2d6fcbf6 | 614 | if (!(r = dev_manager_activate(dm, lv, origin_only))) |
6d52fb46 | 615 | stack; |
ae2bb665 | 616 | |
de6c9183 | 617 | dev_manager_destroy(dm); |
ae2bb665 | 618 | return r; |
b1713d28 | 619 | } |
a381c45a | 620 | |
2d6fcbf6 | 621 | static int _lv_preload(struct logical_volume *lv, unsigned origin_only, int *flush_required) |
0a5e4a14 | 622 | { |
de6c9183 JT |
623 | int r; |
624 | struct dev_manager *dm; | |
37ed70b9 | 625 | |
5f4b2acf AK |
626 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
627 | return_0; | |
628 | ||
2d6fcbf6 | 629 | if (!(r = dev_manager_preload(dm, lv, origin_only, flush_required))) |
6d52fb46 | 630 | stack; |
5f4b2acf AK |
631 | |
632 | dev_manager_destroy(dm); | |
633 | return r; | |
634 | } | |
635 | ||
636 | static int _lv_deactivate(struct logical_volume *lv) | |
637 | { | |
638 | int r; | |
639 | struct dev_manager *dm; | |
640 | ||
641 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) | |
642 | return_0; | |
37ed70b9 | 643 | |
de6c9183 | 644 | if (!(r = dev_manager_deactivate(dm, lv))) |
37ed70b9 | 645 | stack; |
37ed70b9 | 646 | |
de6c9183 JT |
647 | dev_manager_destroy(dm); |
648 | return r; | |
37ed70b9 JT |
649 | } |
650 | ||
2d6fcbf6 | 651 | static int _lv_suspend_lv(struct logical_volume *lv, unsigned origin_only, int lockfs, int flush_required) |
4a624ca0 | 652 | { |
20c5fcf7 AK |
653 | int r; |
654 | struct dev_manager *dm; | |
c2d72fd4 | 655 | |
5f4b2acf AK |
656 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
657 | return_0; | |
0a5e4a14 | 658 | |
2d6fcbf6 | 659 | if (!(r = dev_manager_suspend(dm, lv, origin_only, lockfs, flush_required))) |
37ed70b9 | 660 | stack; |
0a5e4a14 | 661 | |
20c5fcf7 AK |
662 | dev_manager_destroy(dm); |
663 | return r; | |
6d52fb46 | 664 | } |
4a624ca0 | 665 | |
8c013da4 | 666 | /* |
f75c11ed | 667 | * These two functions return the number of visible LVs in the state, |
8c013da4 AK |
668 | * or -1 on error. |
669 | */ | |
65752052 | 670 | int lvs_in_vg_activated(struct volume_group *vg) |
f047219b | 671 | { |
60f13f01 | 672 | struct lv_list *lvl; |
94b8220f | 673 | int count = 0; |
37ed70b9 | 674 | |
d1d9800e AK |
675 | if (!activation()) |
676 | return 0; | |
677 | ||
2c44337b | 678 | dm_list_iterate_items(lvl, &vg->lvs) { |
59d8429c | 679 | if (lv_is_visible(lvl->lv)) |
ab9663f3 | 680 | count += (_lv_active(vg->cmd, lvl->lv) == 1); |
37ed70b9 JT |
681 | } |
682 | ||
683 | return count; | |
f047219b | 684 | } |
2ba80b43 | 685 | |
08c9ff43 | 686 | int lvs_in_vg_opened(const struct volume_group *vg) |
2ba80b43 | 687 | { |
08c9ff43 | 688 | const struct lv_list *lvl; |
94b8220f | 689 | int count = 0; |
2ba80b43 | 690 | |
d1d9800e AK |
691 | if (!activation()) |
692 | return 0; | |
693 | ||
2c44337b | 694 | dm_list_iterate_items(lvl, &vg->lvs) { |
afd9ba98 | 695 | if (lv_is_visible(lvl->lv)) |
f894b4b1 | 696 | count += (_lv_open_count(vg->cmd, lvl->lv) > 0); |
2ba80b43 JT |
697 | } |
698 | ||
699 | return count; | |
700 | } | |
413cc918 | 701 | |
5ca6698f DW |
702 | /* |
703 | * Determine whether an LV is active locally or in a cluster. | |
704 | * Assumes vg lock held. | |
705 | * Returns: | |
706 | * 0 - not active locally or on any node in cluster | |
707 | * 1 - active either locally or some node in the cluster | |
708 | */ | |
709 | int lv_is_active(struct logical_volume *lv) | |
710 | { | |
6ac30c94 MB |
711 | int ret; |
712 | ||
ab9663f3 | 713 | if (_lv_active(lv->vg->cmd, lv)) |
5ca6698f DW |
714 | return 1; |
715 | ||
716 | if (!vg_is_clustered(lv->vg)) | |
717 | return 0; | |
718 | ||
6ac30c94 MB |
719 | if ((ret = remote_lock_held(lv->lvid.s)) >= 0) |
720 | return ret; | |
721 | ||
722 | /* | |
723 | * Old compatibility code if locking doesn't support lock query | |
724 | * FIXME: check status to not deactivate already activate device | |
725 | */ | |
726 | if (activate_lv_excl(lv->vg->cmd, lv)) { | |
56b3d204 MS |
727 | if (!deactivate_lv(lv->vg->cmd, lv)) |
728 | stack; | |
25a2e7b8 | 729 | return 0; |
6ac30c94 MB |
730 | } |
731 | ||
732 | /* | |
733 | * Exclusive local activation failed so assume it is active elsewhere. | |
734 | */ | |
735 | return 1; | |
5ca6698f DW |
736 | } |
737 | ||
d1e8046f AK |
738 | #ifdef DMEVENTD |
739 | static struct dm_event_handler *_create_dm_event_handler(struct cmd_context *cmd, const char *dmuuid, const char *dso, | |
740 | const int timeout, enum dm_event_mask mask) | |
741 | { | |
742 | struct dm_event_handler *dmevh; | |
743 | ||
744 | if (!(dmevh = dm_event_handler_create())) | |
745 | return_NULL; | |
746 | ||
747 | if (dm_event_handler_set_dmeventd_path(dmevh, find_config_tree_str(cmd, "dmeventd/executable", NULL))) | |
748 | goto_bad; | |
749 | ||
750 | if (dm_event_handler_set_dso(dmevh, dso)) | |
751 | goto_bad; | |
752 | ||
753 | if (dm_event_handler_set_uuid(dmevh, dmuuid)) | |
754 | goto_bad; | |
755 | ||
756 | dm_event_handler_set_timeout(dmevh, timeout); | |
757 | dm_event_handler_set_event_mask(dmevh, mask); | |
758 | ||
759 | return dmevh; | |
760 | ||
761 | bad: | |
762 | dm_event_handler_destroy(dmevh); | |
763 | return NULL; | |
764 | } | |
765 | ||
766 | char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath) | |
767 | { | |
768 | char *path; | |
769 | ||
770 | if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) { | |
771 | log_error("Failed to allocate dmeventd library path."); | |
772 | return NULL; | |
773 | } | |
774 | ||
775 | get_shared_library_path(cmd, libpath, path, PATH_MAX); | |
776 | ||
777 | return path; | |
778 | } | |
779 | ||
f92b4f94 AK |
780 | int target_registered_with_dmeventd(struct cmd_context *cmd, const char *dso, |
781 | struct logical_volume *lv, int *pending) | |
d1e8046f AK |
782 | { |
783 | char *uuid; | |
784 | enum dm_event_mask evmask = 0; | |
785 | struct dm_event_handler *dmevh; | |
786 | ||
787 | *pending = 0; | |
788 | ||
789 | if (!dso) | |
790 | return_0; | |
791 | ||
f92b4f94 AK |
792 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
793 | if (!(uuid = build_dm_uuid(cmd->mem, lv->lvid.s, lv_is_origin(lv) ? "real" : NULL))) | |
d1e8046f AK |
794 | return_0; |
795 | ||
796 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, 0, DM_EVENT_ALL_ERRORS))) | |
797 | return_0; | |
798 | ||
799 | if (dm_event_get_registered_device(dmevh, 0)) { | |
800 | dm_event_handler_destroy(dmevh); | |
801 | return 0; | |
802 | } | |
803 | ||
804 | evmask = dm_event_handler_get_event_mask(dmevh); | |
805 | if (evmask & DM_EVENT_REGISTRATION_PENDING) { | |
806 | *pending = 1; | |
807 | evmask &= ~DM_EVENT_REGISTRATION_PENDING; | |
808 | } | |
809 | ||
810 | dm_event_handler_destroy(dmevh); | |
811 | ||
812 | return evmask; | |
813 | } | |
814 | ||
f92b4f94 | 815 | int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv, |
d1e8046f AK |
816 | int evmask __attribute__((unused)), int set, int timeout) |
817 | { | |
818 | char *uuid; | |
819 | struct dm_event_handler *dmevh; | |
820 | int r; | |
821 | ||
822 | if (!dso) | |
823 | return_0; | |
824 | ||
f92b4f94 AK |
825 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
826 | if (!(uuid = build_dm_uuid(cmd->mem, lv->lvid.s, lv_is_origin(lv) ? "real" : NULL))) | |
d1e8046f AK |
827 | return_0; |
828 | ||
829 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, timeout, | |
830 | DM_EVENT_ALL_ERRORS | (timeout ? DM_EVENT_TIMEOUT : 0)))) | |
831 | return_0; | |
832 | ||
833 | r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh); | |
834 | ||
835 | dm_event_handler_destroy(dmevh); | |
836 | ||
837 | if (!r) | |
838 | return_0; | |
839 | ||
840 | log_info("%s %s for events", set ? "Monitored" : "Unmonitored", uuid); | |
841 | ||
842 | return 1; | |
843 | } | |
844 | ||
845 | #endif | |
846 | ||
3e3d5d85 | 847 | /* |
8a37910d AK |
848 | * Returns 0 if an attempt to (un)monitor the device failed. |
849 | * Returns 1 otherwise. | |
3e3d5d85 | 850 | */ |
2d6fcbf6 AK |
851 | int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv, |
852 | unsigned origin_only, int monitor) | |
15d91f5a | 853 | { |
ed09d7e3 | 854 | #ifdef DMEVENTD |
8a37910d AK |
855 | int i, pending = 0, monitored; |
856 | int r = 1; | |
2c44337b | 857 | struct dm_list *tmp, *snh, *snht; |
15d91f5a | 858 | struct lv_segment *seg; |
7a369d37 | 859 | struct lv_segment *log_seg; |
24f4552b | 860 | int (*monitor_fn) (struct lv_segment *s, int e); |
4e9083db | 861 | uint32_t s; |
15d91f5a | 862 | |
20db8ffc AK |
863 | /* skip dmeventd code altogether */ |
864 | if (dmeventd_monitor_mode() == DMEVENTD_MONITOR_IGNORE) | |
865 | return 1; | |
866 | ||
8a37910d AK |
867 | /* |
868 | * Nothing to do if dmeventd configured not to be used. | |
869 | */ | |
870 | if (monitor && !dmeventd_monitor_mode()) | |
3e3d5d85 AK |
871 | return 1; |
872 | ||
67961c7c PR |
873 | /* |
874 | * In case of a snapshot device, we monitor lv->snapshot->lv, | |
875 | * not the actual LV itself. | |
876 | */ | |
c79b4251 | 877 | if (lv_is_cow(lv) && !lv_is_merging_cow(lv)) |
2d6fcbf6 | 878 | return monitor_dev_for_events(cmd, lv->snapshot->lv, 0, monitor); |
67961c7c PR |
879 | |
880 | /* | |
881 | * In case this LV is a snapshot origin, we instead monitor | |
f92b4f94 AK |
882 | * each of its respective snapshots. The origin itself may |
883 | * also need to be monitored if it is a mirror, for example. | |
67961c7c | 884 | */ |
2d6fcbf6 | 885 | if (!origin_only && lv_is_origin(lv)) |
2c44337b AK |
886 | dm_list_iterate_safe(snh, snht, &lv->snapshot_segs) |
887 | if (!monitor_dev_for_events(cmd, dm_list_struct_base(snh, | |
2d6fcbf6 | 888 | struct lv_segment, origin_list)->cow, 0, monitor)) |
0c06de63 | 889 | r = 0; |
67961c7c | 890 | |
7a369d37 JEB |
891 | /* |
892 | * If the volume is mirrored and its log is also mirrored, monitor | |
893 | * the log volume as well. | |
894 | */ | |
895 | if ((seg = first_seg(lv)) != NULL && seg->log_lv != NULL && | |
896 | (log_seg = first_seg(seg->log_lv)) != NULL && | |
897 | seg_is_mirrored(log_seg)) | |
2d6fcbf6 | 898 | if (!monitor_dev_for_events(cmd, seg->log_lv, 0, monitor)) |
7a369d37 JEB |
899 | r = 0; |
900 | ||
2c44337b AK |
901 | dm_list_iterate(tmp, &lv->segments) { |
902 | seg = dm_list_item(tmp, struct lv_segment); | |
15d91f5a | 903 | |
4e9083db AK |
904 | /* Recurse for AREA_LV */ |
905 | for (s = 0; s < seg->area_count; s++) { | |
906 | if (seg_type(seg, s) != AREA_LV) | |
907 | continue; | |
2d6fcbf6 | 908 | if (!monitor_dev_for_events(cmd, seg_lv(seg, s), 0, |
4e9083db AK |
909 | monitor)) { |
910 | log_error("Failed to %smonitor %s", | |
911 | monitor ? "" : "un", | |
912 | seg_lv(seg, s)->name); | |
913 | r = 0; | |
914 | } | |
915 | } | |
916 | ||
8ef6eb30 AK |
917 | if (!seg_monitored(seg) || (seg->status & PVMOVE)) |
918 | continue; | |
8a37910d AK |
919 | |
920 | monitor_fn = NULL; | |
ed09d7e3 | 921 | |
8ef6eb30 | 922 | /* Check monitoring status */ |
8a37910d AK |
923 | if (seg->segtype->ops->target_monitored) |
924 | monitored = seg->segtype->ops->target_monitored(seg, &pending); | |
8ef6eb30 AK |
925 | else |
926 | continue; /* segtype doesn't support registration */ | |
927 | ||
928 | /* | |
929 | * FIXME: We should really try again if pending | |
930 | */ | |
8a37910d | 931 | monitored = (pending) ? 0 : monitored; |
8ef6eb30 | 932 | |
8a37910d AK |
933 | if (monitor) { |
934 | if (monitored) | |
8ef6eb30 | 935 | log_verbose("%s/%s already monitored.", lv->vg->name, lv->name); |
8a37910d AK |
936 | else if (seg->segtype->ops->target_monitor_events) |
937 | monitor_fn = seg->segtype->ops->target_monitor_events; | |
8ef6eb30 | 938 | } else { |
8a37910d | 939 | if (!monitored) |
8ef6eb30 | 940 | log_verbose("%s/%s already not monitored.", lv->vg->name, lv->name); |
8a37910d AK |
941 | else if (seg->segtype->ops->target_unmonitor_events) |
942 | monitor_fn = seg->segtype->ops->target_unmonitor_events; | |
8ef6eb30 | 943 | } |
15d91f5a | 944 | |
8ef6eb30 | 945 | /* Do [un]monitor */ |
8a37910d | 946 | if (!monitor_fn) |
3e3d5d85 | 947 | continue; |
e24e7130 | 948 | |
85a80e05 AK |
949 | log_verbose("%sonitoring %s/%s%s", monitor ? "M" : "Not m", lv->vg->name, lv->name, |
950 | test_mode() ? " [Test mode: skipping this]" : ""); | |
951 | ||
952 | /* FIXME Test mode should really continue a bit further. */ | |
953 | if (test_mode()) | |
954 | continue; | |
8a37910d | 955 | |
3e3d5d85 | 956 | /* FIXME specify events */ |
57fc4cc0 | 957 | if (!monitor_fn(seg, 0)) { |
8a37910d AK |
958 | log_error("%s/%s: %s segment monitoring function failed.", |
959 | lv->vg->name, lv->name, seg->segtype->name); | |
960 | return 0; | |
e24e7130 | 961 | } |
3e3d5d85 | 962 | |
8ef6eb30 AK |
963 | /* Check [un]monitor results */ |
964 | /* Try a couple times if pending, but not forever... */ | |
965 | for (i = 0; i < 10; i++) { | |
966 | pending = 0; | |
8a37910d | 967 | monitored = seg->segtype->ops->target_monitored(seg, &pending); |
8ef6eb30 | 968 | if (pending || |
8a37910d AK |
969 | (!monitored && monitor) || |
970 | (monitored && !monitor)) | |
971 | log_very_verbose("%s/%s %smonitoring still pending: waiting...", | |
972 | lv->vg->name, lv->name, monitor ? "" : "un"); | |
8ef6eb30 AK |
973 | else |
974 | break; | |
975 | sleep(1); | |
976 | } | |
977 | ||
85a80e05 AK |
978 | if (r) |
979 | r = (monitored && monitor) || (!monitored && !monitor); | |
15d91f5a | 980 | } |
e6493477 | 981 | |
3e3d5d85 AK |
982 | return r; |
983 | #else | |
15d91f5a | 984 | return 1; |
3e3d5d85 | 985 | #endif |
15d91f5a | 986 | } |
15d91f5a | 987 | |
658b5812 | 988 | static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 989 | unsigned origin_only, int error_if_not_suspended) |
413cc918 | 990 | { |
095bbca6 | 991 | struct logical_volume *lv = NULL, *lv_pre = NULL; |
199e490e | 992 | struct lvinfo info; |
eb91c4ee | 993 | int r = 0, lockfs = 0, flush_required = 0; |
413cc918 | 994 | |
d1d9800e AK |
995 | if (!activation()) |
996 | return 1; | |
997 | ||
8b888354 | 998 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 999 | goto_out; |
8b888354 | 1000 | |
7a593325 | 1001 | /* Use precommitted metadata if present */ |
8b888354 | 1002 | if (!(lv_pre = lv_from_lvid(cmd, lvid_s, 1))) |
095bbca6 | 1003 | goto_out; |
413cc918 | 1004 | |
2d6fcbf6 AK |
1005 | /* Ignore origin_only unless LV is origin in both old and new metadata */ |
1006 | if (!lv_is_origin(lv) || !lv_is_origin(lv_pre)) | |
1007 | origin_only = 0; | |
1008 | ||
20c5fcf7 | 1009 | if (test_mode()) { |
2d6fcbf6 | 1010 | _skip("Suspending %s%s.", lv->name, origin_only ? " origin without snapshots" : ""); |
095bbca6 MB |
1011 | r = 1; |
1012 | goto out; | |
20c5fcf7 AK |
1013 | } |
1014 | ||
2d6fcbf6 | 1015 | if (!lv_info(cmd, lv, origin_only, &info, 0, 0)) |
095bbca6 | 1016 | goto_out; |
41967a02 | 1017 | |
095bbca6 | 1018 | if (!info.exists || info.suspended) { |
63ae0d14 MB |
1019 | if (!error_if_not_suspended) { |
1020 | r = 1; | |
1021 | if (info.suspended) | |
18b82048 | 1022 | memlock_inc(cmd); |
63ae0d14 | 1023 | } |
095bbca6 MB |
1024 | goto out; |
1025 | } | |
914c9723 | 1026 | |
9249fb12 ZK |
1027 | if (!lv_read_replicator_vgs(lv)) |
1028 | goto_out; | |
1029 | ||
c1fdeec9 MB |
1030 | lv_calculate_readahead(lv, NULL); |
1031 | ||
5f4b2acf | 1032 | /* If VG was precommitted, preload devices for the LV */ |
8b888354 | 1033 | if ((lv_pre->vg->status & PRECOMMITTED)) { |
2d6fcbf6 | 1034 | if (!_lv_preload(lv_pre, origin_only, &flush_required)) { |
5f4b2acf | 1035 | /* FIXME Revert preloading */ |
095bbca6 | 1036 | goto_out; |
5f4b2acf AK |
1037 | } |
1038 | } | |
1039 | ||
2d6fcbf6 | 1040 | if (!monitor_dev_for_events(cmd, lv, origin_only, 0)) |
e24e7130 | 1041 | /* FIXME Consider aborting here */ |
ed09d7e3 AK |
1042 | stack; |
1043 | ||
18b82048 | 1044 | memlock_inc(cmd); |
9cd3426d | 1045 | |
2d6fcbf6 AK |
1046 | if (!origin_only && |
1047 | (lv_is_origin(lv_pre) || lv_is_cow(lv_pre))) | |
9cd3426d AK |
1048 | lockfs = 1; |
1049 | ||
2d6fcbf6 | 1050 | if (!_lv_suspend_lv(lv, origin_only, lockfs, flush_required)) { |
18b82048 | 1051 | memlock_dec(cmd); |
914c9723 | 1052 | fs_unlock(); |
095bbca6 | 1053 | goto out; |
914c9723 | 1054 | } |
8c013da4 | 1055 | |
095bbca6 MB |
1056 | r = 1; |
1057 | out: | |
1058 | if (lv_pre) | |
1059 | vg_release(lv_pre->vg); | |
9249fb12 ZK |
1060 | if (lv) { |
1061 | lv_release_replicator_vgs(lv); | |
095bbca6 | 1062 | vg_release(lv->vg); |
9249fb12 | 1063 | } |
095bbca6 MB |
1064 | |
1065 | return r; | |
413cc918 AK |
1066 | } |
1067 | ||
658b5812 | 1068 | /* Returns success if the device is not active */ |
2d6fcbf6 | 1069 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1070 | { |
2d6fcbf6 | 1071 | return _lv_suspend(cmd, lvid_s, origin_only, 0); |
658b5812 AK |
1072 | } |
1073 | ||
2d6fcbf6 AK |
1074 | /* No longer used */ |
1075 | /*********** | |
658b5812 AK |
1076 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
1077 | { | |
1078 | return _lv_suspend(cmd, lvid_s, 1); | |
1079 | } | |
2d6fcbf6 | 1080 | ***********/ |
658b5812 AK |
1081 | |
1082 | static int _lv_resume(struct cmd_context *cmd, const char *lvid_s, | |
2d6fcbf6 | 1083 | unsigned origin_only, |
658b5812 | 1084 | int error_if_not_active) |
413cc918 AK |
1085 | { |
1086 | struct logical_volume *lv; | |
199e490e | 1087 | struct lvinfo info; |
095bbca6 | 1088 | int r = 0; |
413cc918 | 1089 | |
d1d9800e AK |
1090 | if (!activation()) |
1091 | return 1; | |
1092 | ||
7a593325 | 1093 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
75b37a11 | 1094 | goto_out; |
413cc918 | 1095 | |
2d6fcbf6 AK |
1096 | if (!lv_is_origin(lv)) |
1097 | origin_only = 0; | |
1098 | ||
20c5fcf7 | 1099 | if (test_mode()) { |
2d6fcbf6 | 1100 | _skip("Resuming %s%s.", lv->name, origin_only ? " without snapshots" : ""); |
095bbca6 MB |
1101 | r = 1; |
1102 | goto out; | |
20c5fcf7 AK |
1103 | } |
1104 | ||
2d6fcbf6 | 1105 | if (!lv_info(cmd, lv, origin_only, &info, 0, 0)) |
095bbca6 | 1106 | goto_out; |
41967a02 | 1107 | |
095bbca6 | 1108 | if (!info.exists || !info.suspended) { |
4ec2ae86 ZK |
1109 | if (error_if_not_active) |
1110 | goto_out; | |
1111 | r = 1; | |
1112 | goto out; | |
095bbca6 | 1113 | } |
914c9723 | 1114 | |
2d6fcbf6 | 1115 | if (!_lv_activate_lv(lv, origin_only)) |
75b37a11 | 1116 | goto_out; |
914c9723 | 1117 | |
18b82048 | 1118 | memlock_dec(cmd); |
914c9723 | 1119 | fs_unlock(); |
413cc918 | 1120 | |
2d6fcbf6 | 1121 | if (!monitor_dev_for_events(cmd, lv, origin_only, 1)) |
ed09d7e3 | 1122 | stack; |
15d91f5a | 1123 | |
095bbca6 MB |
1124 | r = 1; |
1125 | out: | |
1126 | if (lv) | |
1127 | vg_release(lv->vg); | |
1128 | ||
1129 | return r; | |
413cc918 AK |
1130 | } |
1131 | ||
658b5812 | 1132 | /* Returns success if the device is not active */ |
2d6fcbf6 | 1133 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1134 | { |
2d6fcbf6 | 1135 | return _lv_resume(cmd, lvid_s, origin_only, 0); |
658b5812 AK |
1136 | } |
1137 | ||
2d6fcbf6 | 1138 | int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1139 | { |
2d6fcbf6 | 1140 | return _lv_resume(cmd, lvid_s, origin_only, 1); |
658b5812 AK |
1141 | } |
1142 | ||
64a95010 AK |
1143 | static int _lv_has_open_snapshots(struct logical_volume *lv) |
1144 | { | |
1145 | struct lv_segment *snap_seg; | |
1146 | struct lvinfo info; | |
1147 | int r = 0; | |
1148 | ||
1149 | dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list) { | |
2d6fcbf6 | 1150 | if (!lv_info(lv->vg->cmd, snap_seg->cow, 0, &info, 1, 0)) { |
64a95010 AK |
1151 | r = 1; |
1152 | continue; | |
1153 | } | |
1154 | ||
1155 | if (info.exists && info.open_count) { | |
1156 | log_error("LV %s/%s has open snapshot %s: " | |
1157 | "not deactivating", lv->vg->name, lv->name, | |
1158 | snap_seg->cow->name); | |
1159 | r = 1; | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | return r; | |
1164 | } | |
1165 | ||
be326a2f | 1166 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) |
f4cbeaf0 AK |
1167 | { |
1168 | struct logical_volume *lv; | |
199e490e | 1169 | struct lvinfo info; |
095bbca6 | 1170 | int r = 0; |
f4cbeaf0 | 1171 | |
d1d9800e AK |
1172 | if (!activation()) |
1173 | return 1; | |
1174 | ||
7a593325 | 1175 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1176 | goto out; |
f4cbeaf0 | 1177 | |
20c5fcf7 AK |
1178 | if (test_mode()) { |
1179 | _skip("Deactivating '%s'.", lv->name); | |
095bbca6 MB |
1180 | r = 1; |
1181 | goto out; | |
20c5fcf7 AK |
1182 | } |
1183 | ||
2d6fcbf6 | 1184 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) |
095bbca6 | 1185 | goto_out; |
41967a02 | 1186 | |
095bbca6 MB |
1187 | if (!info.exists) { |
1188 | r = 1; | |
1189 | goto out; | |
1190 | } | |
f4cbeaf0 | 1191 | |
64a95010 AK |
1192 | if (lv_is_visible(lv)) { |
1193 | if (info.open_count) { | |
1194 | log_error("LV %s/%s in use: not deactivating", | |
1195 | lv->vg->name, lv->name); | |
1196 | goto out; | |
1197 | } | |
1198 | if (lv_is_origin(lv) && _lv_has_open_snapshots(lv)) | |
1199 | goto_out; | |
0cf96f33 AK |
1200 | } |
1201 | ||
9249fb12 ZK |
1202 | if (!lv_read_replicator_vgs(lv)) |
1203 | goto_out; | |
1204 | ||
c1fdeec9 MB |
1205 | lv_calculate_readahead(lv, NULL); |
1206 | ||
2d6fcbf6 | 1207 | if (!monitor_dev_for_events(cmd, lv, 0, 0)) |
ed09d7e3 | 1208 | stack; |
15d91f5a | 1209 | |
18b82048 | 1210 | memlock_inc(cmd); |
914c9723 | 1211 | r = _lv_deactivate(lv); |
18b82048 | 1212 | memlock_dec(cmd); |
914c9723 AK |
1213 | fs_unlock(); |
1214 | ||
2d6fcbf6 | 1215 | if (!lv_info(cmd, lv, 0, &info, 1, 0) || info.exists) |
89a6cdfd | 1216 | r = 0; |
095bbca6 | 1217 | out: |
9249fb12 ZK |
1218 | if (lv) { |
1219 | lv_release_replicator_vgs(lv); | |
095bbca6 | 1220 | vg_release(lv->vg); |
9249fb12 | 1221 | } |
095bbca6 | 1222 | |
914c9723 | 1223 | return r; |
f4cbeaf0 AK |
1224 | } |
1225 | ||
658b5812 AK |
1226 | /* Test if LV passes filter */ |
1227 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, | |
1228 | int *activate_lv) | |
1229 | { | |
1230 | struct logical_volume *lv; | |
095bbca6 | 1231 | int r = 0; |
658b5812 | 1232 | |
095bbca6 MB |
1233 | if (!activation()) { |
1234 | *activate_lv = 1; | |
1235 | return 1; | |
1236 | } | |
658b5812 | 1237 | |
424dd43e | 1238 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1239 | goto out; |
658b5812 AK |
1240 | |
1241 | if (!_passes_activation_filter(cmd, lv)) { | |
1242 | log_verbose("Not activating %s/%s due to config file settings", | |
1243 | lv->vg->name, lv->name); | |
1244 | *activate_lv = 0; | |
095bbca6 MB |
1245 | } else |
1246 | *activate_lv = 1; | |
1247 | r = 1; | |
1248 | out: | |
1249 | if (lv) | |
1250 | vg_release(lv->vg); | |
658b5812 | 1251 | |
095bbca6 | 1252 | return r; |
658b5812 AK |
1253 | } |
1254 | ||
07d31831 AK |
1255 | static int _lv_activate(struct cmd_context *cmd, const char *lvid_s, |
1256 | int exclusive, int filter) | |
f4cbeaf0 AK |
1257 | { |
1258 | struct logical_volume *lv; | |
199e490e | 1259 | struct lvinfo info; |
095bbca6 | 1260 | int r = 0; |
f4cbeaf0 | 1261 | |
d1d9800e AK |
1262 | if (!activation()) |
1263 | return 1; | |
1264 | ||
424dd43e | 1265 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1266 | goto out; |
f4cbeaf0 | 1267 | |
658b5812 | 1268 | if (filter && !_passes_activation_filter(cmd, lv)) { |
de17d760 AK |
1269 | log_verbose("Not activating %s/%s due to config file settings", |
1270 | lv->vg->name, lv->name); | |
095bbca6 | 1271 | goto out; |
de17d760 AK |
1272 | } |
1273 | ||
cda35408 | 1274 | if ((!lv->vg->cmd->partial_activation) && (lv->status & PARTIAL_LV)) { |
8c5bcdab AK |
1275 | log_error("Refusing activation of partial LV %s. Use --partial to override.", |
1276 | lv->name); | |
095bbca6 | 1277 | goto_out; |
8c5bcdab AK |
1278 | } |
1279 | ||
b4048242 PR |
1280 | if (lv_has_unknown_segments(lv)) { |
1281 | log_error("Refusing activation of LV %s containing " | |
1282 | "an unrecognised segment.", lv->name); | |
1283 | goto_out; | |
1284 | } | |
1285 | ||
20c5fcf7 AK |
1286 | if (test_mode()) { |
1287 | _skip("Activating '%s'.", lv->name); | |
095bbca6 MB |
1288 | r = 1; |
1289 | goto out; | |
20c5fcf7 AK |
1290 | } |
1291 | ||
2d6fcbf6 | 1292 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
095bbca6 | 1293 | goto_out; |
8c013da4 | 1294 | |
095bbca6 MB |
1295 | if (info.exists && !info.suspended && info.live_table) { |
1296 | r = 1; | |
1297 | goto out; | |
1298 | } | |
f4cbeaf0 | 1299 | |
9249fb12 ZK |
1300 | if (!lv_read_replicator_vgs(lv)) |
1301 | goto_out; | |
1302 | ||
c1fdeec9 MB |
1303 | lv_calculate_readahead(lv, NULL); |
1304 | ||
07d31831 AK |
1305 | if (exclusive) |
1306 | lv->status |= ACTIVATE_EXCL; | |
1307 | ||
18b82048 | 1308 | memlock_inc(cmd); |
2d6fcbf6 | 1309 | if (!(r = _lv_activate_lv(lv, 0))) |
75b37a11 | 1310 | stack; |
18b82048 | 1311 | memlock_dec(cmd); |
914c9723 AK |
1312 | fs_unlock(); |
1313 | ||
2d6fcbf6 | 1314 | if (r && !monitor_dev_for_events(cmd, lv, 0, 1)) |
ed09d7e3 | 1315 | stack; |
15d91f5a | 1316 | |
095bbca6 | 1317 | out: |
9249fb12 ZK |
1318 | if (lv) { |
1319 | lv_release_replicator_vgs(lv); | |
095bbca6 | 1320 | vg_release(lv->vg); |
9249fb12 | 1321 | } |
095bbca6 | 1322 | |
914c9723 | 1323 | return r; |
f4cbeaf0 | 1324 | } |
199e490e | 1325 | |
658b5812 | 1326 | /* Activate LV */ |
07d31831 | 1327 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1328 | { |
75b37a11 AK |
1329 | if (!_lv_activate(cmd, lvid_s, exclusive, 0)) |
1330 | return_0; | |
1331 | ||
1332 | return 1; | |
658b5812 AK |
1333 | } |
1334 | ||
1335 | /* Activate LV only if it passes filter */ | |
07d31831 | 1336 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1337 | { |
75b37a11 AK |
1338 | if (!_lv_activate(cmd, lvid_s, exclusive, 1)) |
1339 | return_0; | |
1340 | ||
1341 | return 1; | |
658b5812 AK |
1342 | } |
1343 | ||
f7dd6d84 AK |
1344 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) |
1345 | { | |
f7dd6d84 AK |
1346 | int r = 1; |
1347 | ||
8b076648 | 1348 | if (!lv) { |
2262b320 | 1349 | r = dm_mknodes(NULL); |
8b076648 AK |
1350 | fs_unlock(); |
1351 | return r; | |
1352 | } | |
1353 | ||
ab9663f3 MB |
1354 | if (!activation()) |
1355 | return 1; | |
f7dd6d84 | 1356 | |
ab9663f3 | 1357 | r = dev_manager_mknodes(lv); |
f7dd6d84 AK |
1358 | |
1359 | fs_unlock(); | |
1360 | ||
1361 | return r; | |
1362 | } | |
1363 | ||
352a99b9 AK |
1364 | /* |
1365 | * Does PV use VG somewhere in its construction? | |
1366 | * Returns 1 on failure. | |
1367 | */ | |
898e6f8e | 1368 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 1369 | struct volume_group *vg) |
352a99b9 | 1370 | { |
352a99b9 AK |
1371 | if (!activation()) |
1372 | return 0; | |
1373 | ||
1374 | if (!dm_is_dm_major(MAJOR(pv->dev->dev))) | |
1375 | return 0; | |
1376 | ||
898e6f8e | 1377 | return dev_manager_device_uses_vg(pv->dev, vg); |
352a99b9 AK |
1378 | } |
1379 | ||
2293567c AK |
1380 | void activation_release(void) |
1381 | { | |
1382 | dev_manager_release(); | |
1383 | } | |
1384 | ||
914c9723 AK |
1385 | void activation_exit(void) |
1386 | { | |
1387 | dev_manager_exit(); | |
1388 | } | |
199e490e | 1389 | #endif |