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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. |
a18dcfb5 | 3 | * Copyright (C) 2004-2012 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 | { | |
900f5f81 | 41 | static char path[PATH_MAX]; |
7d1552c9 | 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 | } | |
d1b36fbe | 150 | int lvm_dm_prefix_check(const char *sysfs_dir, int major, int minor, const char *prefix) |
07113bee MB |
151 | { |
152 | return 0; | |
153 | } | |
2d6fcbf6 AK |
154 | int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, unsigned origin_only, |
155 | struct lvinfo *info, int with_open_count, int with_read_ahead) | |
199e490e AK |
156 | { |
157 | return 0; | |
158 | } | |
4bd9480d | 159 | int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 160 | unsigned origin_only, |
a6b22cf3 | 161 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
4bd9480d AK |
162 | { |
163 | return 0; | |
164 | } | |
8191fe4f | 165 | int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent) |
199e490e AK |
166 | { |
167 | return 0; | |
168 | } | |
aec21154 | 169 | int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv, |
8191fe4f | 170 | int wait, percent_t *percent, uint32_t *event_nr) |
10b29b8d AK |
171 | { |
172 | return 0; | |
173 | } | |
199e490e AK |
174 | int lvs_in_vg_activated(struct volume_group *vg) |
175 | { | |
176 | return 0; | |
177 | } | |
ab8b85fb | 178 | int lvs_in_vg_opened(const struct volume_group *vg) |
199e490e AK |
179 | { |
180 | return 0; | |
181 | } | |
2d6fcbf6 | 182 | /****** |
658b5812 AK |
183 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
184 | { | |
185 | return 1; | |
186 | } | |
2d6fcbf6 | 187 | *******/ |
ab8b85fb | 188 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
199e490e AK |
189 | { |
190 | return 1; | |
191 | } | |
ab8b85fb | 192 | int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 AK |
193 | { |
194 | return 1; | |
195 | } | |
ab8b85fb | 196 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s, |
10d0d9c7 | 197 | unsigned origin_only, unsigned exclusive, unsigned revert) |
199e490e AK |
198 | { |
199 | return 1; | |
200 | } | |
201 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) | |
202 | { | |
203 | return 1; | |
204 | } | |
658b5812 AK |
205 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, |
206 | int *activate_lv) | |
207 | { | |
208 | return 1; | |
209 | } | |
07d31831 | 210 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
199e490e AK |
211 | { |
212 | return 1; | |
213 | } | |
07d31831 | 214 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 AK |
215 | { |
216 | return 1; | |
217 | } | |
f7dd6d84 AK |
218 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) |
219 | { | |
220 | return 1; | |
221 | } | |
a00cb3a6 ZK |
222 | int lv_send_message(const struct logical_volume *lv, const char *message) |
223 | { | |
224 | return 0; | |
225 | } | |
0ce83a83 | 226 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 227 | struct volume_group *vg) |
352a99b9 AK |
228 | { |
229 | return 0; | |
230 | } | |
2293567c AK |
231 | void activation_release(void) |
232 | { | |
2293567c | 233 | } |
914c9723 AK |
234 | void activation_exit(void) |
235 | { | |
914c9723 | 236 | } |
b19f0121 | 237 | |
ab8b85fb ZK |
238 | int lv_is_active(struct logical_volume *lv) |
239 | { | |
240 | return 0; | |
241 | } | |
b19f0121 JEB |
242 | int lv_is_active_but_not_locally(struct logical_volume *lv) |
243 | { | |
244 | return 0; | |
245 | } | |
246 | int lv_is_active_exclusive(struct logical_volume *lv) | |
247 | { | |
248 | return 0; | |
249 | } | |
ab8b85fb ZK |
250 | int lv_is_active_exclusive_locally(struct logical_volume *lv) |
251 | { | |
252 | return 0; | |
253 | } | |
254 | int lv_is_active_exclusive_remotely(struct logical_volume *lv) | |
255 | { | |
256 | return 0; | |
257 | } | |
b19f0121 | 258 | |
ab8b85fb ZK |
259 | int lv_check_transient(struct logical_volume *lv) |
260 | { | |
261 | return 1; | |
262 | } | |
263 | int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv, | |
81beded3 | 264 | struct lv_activate_opts *laopts, int monitor) |
ab8b85fb ZK |
265 | { |
266 | return 1; | |
267 | } | |
199e490e AK |
268 | #else /* DEVMAPPER_SUPPORT */ |
269 | ||
d1d9800e AK |
270 | static int _activation = 1; |
271 | ||
8ef2b021 | 272 | void set_activation(int act) |
d1d9800e | 273 | { |
8ef2b021 | 274 | if (act == _activation) |
d1d9800e AK |
275 | return; |
276 | ||
8ef2b021 | 277 | _activation = act; |
d1d9800e AK |
278 | if (_activation) |
279 | log_verbose("Activation enabled. Device-mapper kernel " | |
280 | "driver will be used."); | |
281 | else | |
e7ddf416 | 282 | log_warn("WARNING: Activation disabled. No device-mapper " |
bfe2b548 | 283 | "interaction will be attempted."); |
d1d9800e AK |
284 | } |
285 | ||
8ef2b021 | 286 | int activation(void) |
d1d9800e AK |
287 | { |
288 | return _activation; | |
289 | } | |
290 | ||
a18dcfb5 AK |
291 | static int _passes_volumes_filter(struct cmd_context *cmd, |
292 | struct logical_volume *lv, | |
293 | const struct dm_config_node *cn, | |
294 | const char *config_path) | |
de17d760 | 295 | { |
e59e2f7c | 296 | const struct dm_config_value *cv; |
760d1fac | 297 | const char *str; |
900f5f81 | 298 | static char path[PATH_MAX]; |
de17d760 | 299 | |
a18dcfb5 AK |
300 | log_verbose("%s configuration setting defined: " |
301 | "Checking the list to match %s/%s", | |
302 | config_path, lv->vg->name, lv->name); | |
fefa4323 | 303 | |
f7e3a19f | 304 | for (cv = cn->v; cv; cv = cv->next) { |
e59e2f7c | 305 | if (cv->type != DM_CFG_STRING) { |
a18dcfb5 AK |
306 | log_error("Ignoring invalid string in config file %s", |
307 | config_path); | |
de17d760 AK |
308 | continue; |
309 | } | |
310 | str = cv->v.str; | |
311 | if (!*str) { | |
a18dcfb5 AK |
312 | log_error("Ignoring empty string in config file %s", |
313 | config_path); | |
de17d760 AK |
314 | continue; |
315 | } | |
316 | ||
f7e3a19f | 317 | |
de17d760 AK |
318 | /* Tag? */ |
319 | if (*str == '@') { | |
320 | str++; | |
321 | if (!*str) { | |
322 | log_error("Ignoring empty tag in config file " | |
a18dcfb5 | 323 | "%s", config_path); |
de17d760 AK |
324 | continue; |
325 | } | |
326 | /* If any host tag matches any LV or VG tag, activate */ | |
327 | if (!strcmp(str, "*")) { | |
eb82bd05 | 328 | if (str_list_match_list(&cmd->tags, &lv->tags, NULL) |
de17d760 | 329 | || str_list_match_list(&cmd->tags, |
eb82bd05 | 330 | &lv->vg->tags, NULL)) |
de17d760 AK |
331 | return 1; |
332 | else | |
333 | continue; | |
334 | } | |
335 | /* If supplied tag matches LV or VG tag, activate */ | |
336 | if (str_list_match_item(&lv->tags, str) || | |
337 | str_list_match_item(&lv->vg->tags, str)) | |
338 | return 1; | |
339 | else | |
340 | continue; | |
341 | } | |
13835b5f | 342 | if (!strchr(str, '/')) { |
de17d760 AK |
343 | /* vgname supplied */ |
344 | if (!strcmp(str, lv->vg->name)) | |
345 | return 1; | |
346 | else | |
347 | continue; | |
348 | } | |
349 | /* vgname/lvname */ | |
0550c1b6 | 350 | if (dm_snprintf(path, sizeof(path), "%s/%s", lv->vg->name, |
de17d760 | 351 | lv->name) < 0) { |
0550c1b6 | 352 | log_error("dm_snprintf error from %s/%s", lv->vg->name, |
de17d760 AK |
353 | lv->name); |
354 | continue; | |
355 | } | |
356 | if (!strcmp(path, str)) | |
357 | return 1; | |
358 | } | |
359 | ||
a18dcfb5 AK |
360 | log_verbose("No item supplied in %s configuration setting " |
361 | "matches %s/%s", config_path, lv->vg->name, lv->name); | |
fefa4323 | 362 | |
de17d760 AK |
363 | return 0; |
364 | } | |
365 | ||
a18dcfb5 AK |
366 | static int _passes_activation_filter(struct cmd_context *cmd, |
367 | struct logical_volume *lv) | |
368 | { | |
369 | const struct dm_config_node *cn; | |
370 | ||
371 | if (!(cn = find_config_tree_node(cmd, "activation/volume_list"))) { | |
372 | log_verbose("activation/volume_list configuration setting " | |
373 | "not defined: Checking only host tags for %s/%s", | |
374 | lv->vg->name, lv->name); | |
375 | ||
376 | /* If no host tags defined, activate */ | |
377 | if (dm_list_empty(&cmd->tags)) | |
378 | return 1; | |
379 | ||
380 | /* If any host tag matches any LV or VG tag, activate */ | |
381 | if (str_list_match_list(&cmd->tags, &lv->tags, NULL) || | |
382 | str_list_match_list(&cmd->tags, &lv->vg->tags, NULL)) | |
383 | return 1; | |
384 | ||
385 | log_verbose("No host tag matches %s/%s", | |
386 | lv->vg->name, lv->name); | |
387 | ||
388 | /* Don't activate */ | |
389 | return 0; | |
390 | } | |
391 | ||
392 | return _passes_volumes_filter(cmd, lv, cn, "activation/volume_list"); | |
393 | } | |
394 | ||
395 | static int _passes_readonly_filter(struct cmd_context *cmd, | |
396 | struct logical_volume *lv) | |
397 | { | |
398 | struct dm_config_node *cn; | |
399 | ||
400 | if (!(cn = find_config_tree_node(cmd, "activation/read_only_volume_list"))) | |
401 | return 0; | |
402 | ||
403 | return _passes_volumes_filter(cmd, lv, cn, "activation/read_only_volume_list"); | |
404 | } | |
405 | ||
fae0c576 AK |
406 | int library_version(char *version, size_t size) |
407 | { | |
d1d9800e AK |
408 | if (!activation()) |
409 | return 0; | |
410 | ||
f894b4b1 | 411 | return dm_get_library_version(version, size); |
fae0c576 AK |
412 | } |
413 | ||
fae0c576 AK |
414 | int driver_version(char *version, size_t size) |
415 | { | |
d1d9800e AK |
416 | if (!activation()) |
417 | return 0; | |
418 | ||
fae0c576 | 419 | log_very_verbose("Getting driver version"); |
fae0c576 | 420 | |
f894b4b1 | 421 | return dm_driver_version(version, size); |
fae0c576 AK |
422 | } |
423 | ||
bbf83db1 AK |
424 | int target_version(const char *target_name, uint32_t *maj, |
425 | uint32_t *min, uint32_t *patchlevel) | |
d1f4953a AK |
426 | { |
427 | int r = 0; | |
428 | struct dm_task *dmt; | |
429 | struct dm_versions *target, *last_target; | |
430 | ||
d1f4953a | 431 | log_very_verbose("Getting target version for %s", target_name); |
5f4b2acf AK |
432 | if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS))) |
433 | return_0; | |
d1f4953a | 434 | |
2243718f AK |
435 | if (activation_checks() && !dm_task_enable_checks(dmt)) |
436 | goto_out; | |
437 | ||
d1f4953a AK |
438 | if (!dm_task_run(dmt)) { |
439 | log_debug("Failed to get %s target version", target_name); | |
440 | /* Assume this was because LIST_VERSIONS isn't supported */ | |
441 | return 1; | |
442 | } | |
443 | ||
444 | target = dm_task_get_versions(dmt); | |
445 | ||
446 | do { | |
447 | last_target = target; | |
448 | ||
449 | if (!strcmp(target_name, target->name)) { | |
450 | r = 1; | |
bbf83db1 AK |
451 | *maj = target->version[0]; |
452 | *min = target->version[1]; | |
453 | *patchlevel = target->version[2]; | |
d1f4953a AK |
454 | goto out; |
455 | } | |
456 | ||
d40d166f | 457 | target = (struct dm_versions *)((char *) target + target->next); |
d1f4953a AK |
458 | } while (last_target != target); |
459 | ||
460 | out: | |
461 | dm_task_destroy(dmt); | |
462 | ||
463 | return r; | |
464 | } | |
465 | ||
a3390bb5 | 466 | int lvm_dm_prefix_check(int major, int minor, const char *prefix) |
07113bee MB |
467 | { |
468 | struct dm_task *dmt; | |
469 | const char *uuid; | |
470 | int r; | |
471 | ||
472 | if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) | |
d1b36fbe | 473 | return_0; |
07113bee MB |
474 | |
475 | if (!dm_task_set_minor(dmt, minor) || | |
476 | !dm_task_set_major(dmt, major) || | |
477 | !dm_task_run(dmt) || | |
478 | !(uuid = dm_task_get_uuid(dmt))) { | |
479 | dm_task_destroy(dmt); | |
480 | return 0; | |
481 | } | |
482 | ||
483 | r = strncasecmp(uuid, prefix, strlen(prefix)); | |
484 | dm_task_destroy(dmt); | |
485 | ||
d1b36fbe | 486 | return r ? 0 : 1; |
07113bee MB |
487 | } |
488 | ||
ed82bfd2 | 489 | int module_present(struct cmd_context *cmd, const char *target_name) |
f894b4b1 | 490 | { |
5619c629 | 491 | int ret = 0; |
03b49fe1 | 492 | #ifdef MODPROBE_CMD |
f894b4b1 | 493 | char module[128]; |
c8669f6b | 494 | const char *argv[3]; |
5619c629 MB |
495 | |
496 | if (dm_snprintf(module, sizeof(module), "dm-%s", target_name) < 0) { | |
497 | log_error("module_present module name too long: %s", | |
498 | target_name); | |
499 | return 0; | |
500 | } | |
501 | ||
c8669f6b ZK |
502 | argv[0] = MODPROBE_CMD; |
503 | argv[1] = module; | |
504 | argv[2] = NULL; | |
505 | ||
b1b38215 | 506 | ret = exec_cmd(cmd, argv, NULL, 0); |
03b49fe1 | 507 | #endif |
5619c629 MB |
508 | return ret; |
509 | } | |
510 | ||
ed82bfd2 AK |
511 | int target_present(struct cmd_context *cmd, const char *target_name, |
512 | int use_modprobe) | |
5619c629 MB |
513 | { |
514 | uint32_t maj, min, patchlevel; | |
f894b4b1 AK |
515 | |
516 | if (!activation()) | |
517 | return 0; | |
518 | ||
519 | #ifdef MODPROBE_CMD | |
5f4b2acf | 520 | if (use_modprobe) { |
bbf83db1 | 521 | if (target_version(target_name, &maj, &min, &patchlevel)) |
5f4b2acf | 522 | return 1; |
f894b4b1 | 523 | |
ed82bfd2 | 524 | if (!module_present(cmd, target_name)) |
5f4b2acf | 525 | return_0; |
f894b4b1 AK |
526 | } |
527 | #endif | |
528 | ||
bbf83db1 | 529 | return target_version(target_name, &maj, &min, &patchlevel); |
f894b4b1 AK |
530 | } |
531 | ||
de6c9183 JT |
532 | /* |
533 | * Returns 1 if info structure populated, else 0 on failure. | |
534 | */ | |
2d6fcbf6 | 535 | int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, unsigned origin_only, |
ab9663f3 | 536 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
37ed70b9 | 537 | { |
199e490e | 538 | struct dm_info dminfo; |
4a624ca0 | 539 | |
d1d9800e AK |
540 | if (!activation()) |
541 | return 0; | |
56cab8cc ZK |
542 | /* |
543 | * If open_count info is requested and we have to be sure our own udev | |
544 | * transactions are finished | |
545 | * For non-clustered locking type we are only interested for non-delete operation | |
546 | * in progress - as only those could lead to opened files | |
547 | */ | |
548 | if (with_open_count) { | |
549 | if (locking_is_clustered()) | |
550 | sync_local_dev_names(cmd); /* Wait to have udev in sync */ | |
f5f6dcbc | 551 | else if (fs_has_non_delete_ops()) |
56cab8cc ZK |
552 | fs_unlock(); /* For non clustered - wait if there are non-delete ops */ |
553 | } | |
d1d9800e | 554 | |
2d6fcbf6 | 555 | if (!dev_manager_info(lv->vg->cmd->mem, lv, origin_only ? "real" : NULL, with_open_count, |
ab9663f3 | 556 | with_read_ahead, &dminfo, &info->read_ahead)) |
5f4b2acf | 557 | return_0; |
4a624ca0 | 558 | |
199e490e AK |
559 | info->exists = dminfo.exists; |
560 | info->suspended = dminfo.suspended; | |
561 | info->open_count = dminfo.open_count; | |
562 | info->major = dminfo.major; | |
563 | info->minor = dminfo.minor; | |
564 | info->read_only = dminfo.read_only; | |
5f4b2acf AK |
565 | info->live_table = dminfo.live_table; |
566 | info->inactive_table = dminfo.inactive_table; | |
199e490e | 567 | |
f894b4b1 | 568 | return 1; |
de6c9183 | 569 | } |
a62ee8ad | 570 | |
4bd9480d | 571 | int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 572 | unsigned origin_only, |
a6b22cf3 | 573 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
4bd9480d | 574 | { |
0548bcc2 | 575 | int r; |
4bd9480d AK |
576 | struct logical_volume *lv; |
577 | ||
7a593325 | 578 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
4bd9480d AK |
579 | return 0; |
580 | ||
2d6fcbf6 AK |
581 | if (!lv_is_origin(lv)) |
582 | origin_only = 0; | |
583 | ||
584 | r = lv_info(cmd, lv, origin_only, info, with_open_count, with_read_ahead); | |
077a6755 | 585 | release_vg(lv->vg); |
0548bcc2 MB |
586 | |
587 | return r; | |
4bd9480d AK |
588 | } |
589 | ||
125712be PR |
590 | int lv_check_not_in_use(struct cmd_context *cmd __attribute__((unused)), |
591 | struct logical_volume *lv, struct lvinfo *info) | |
592 | { | |
593 | if (!info->exists) | |
594 | return 1; | |
595 | ||
596 | /* If sysfs is not used, use open_count information only. */ | |
c3e5b497 PR |
597 | if (!*dm_sysfs_dir()) { |
598 | if (info->open_count) { | |
599 | log_error("Logical volume %s/%s in use.", | |
600 | lv->vg->name, lv->name); | |
601 | return 0; | |
602 | } | |
603 | ||
604 | return 1; | |
605 | } | |
125712be PR |
606 | |
607 | if (dm_device_has_holders(info->major, info->minor)) { | |
608 | log_error("Logical volume %s/%s is used by another device.", | |
609 | lv->vg->name, lv->name); | |
610 | return 0; | |
611 | } | |
612 | ||
613 | if (dm_device_has_mounted_fs(info->major, info->minor)) { | |
614 | log_error("Logical volume %s/%s contains a filesystem in use.", | |
615 | lv->vg->name, lv->name); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | return 1; | |
620 | } | |
621 | ||
d345bf2c PR |
622 | /* |
623 | * Returns 1 if percent set, else 0 on failure. | |
624 | */ | |
625 | int lv_check_transient(struct logical_volume *lv) | |
626 | { | |
627 | int r; | |
628 | struct dev_manager *dm; | |
629 | ||
630 | if (!activation()) | |
631 | return 0; | |
632 | ||
7df72b3c AK |
633 | log_debug("Checking transient status for LV %s/%s", lv->vg->name, lv->name); |
634 | ||
df390f17 | 635 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1))) |
d345bf2c PR |
636 | return_0; |
637 | ||
638 | if (!(r = dev_manager_transient(dm, lv))) | |
639 | stack; | |
640 | ||
641 | dev_manager_destroy(dm); | |
642 | ||
643 | return r; | |
644 | } | |
645 | ||
1951dba9 AL |
646 | /* |
647 | * Returns 1 if percent set, else 0 on failure. | |
648 | */ | |
8191fe4f | 649 | int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent) |
1951dba9 AL |
650 | { |
651 | int r; | |
652 | struct dev_manager *dm; | |
653 | ||
d1d9800e AK |
654 | if (!activation()) |
655 | return 0; | |
656 | ||
7df72b3c AK |
657 | log_debug("Checking snapshot percent for LV %s/%s", lv->vg->name, lv->name); |
658 | ||
df390f17 | 659 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1))) |
5f4b2acf | 660 | return_0; |
1951dba9 | 661 | |
8191fe4f | 662 | if (!(r = dev_manager_snapshot_percent(dm, lv, percent))) |
1951dba9 | 663 | stack; |
c826c0d1 | 664 | |
1951dba9 AL |
665 | dev_manager_destroy(dm); |
666 | ||
667 | return r; | |
668 | } | |
669 | ||
10b29b8d | 670 | /* FIXME Merge with snapshot_percent */ |
aec21154 | 671 | int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv, |
8191fe4f | 672 | int wait, percent_t *percent, uint32_t *event_nr) |
10b29b8d AK |
673 | { |
674 | int r; | |
675 | struct dev_manager *dm; | |
b65b777d | 676 | struct lvinfo info; |
10b29b8d | 677 | |
876003dc AK |
678 | /* If mirrored LV is temporarily shrinked to 1 area (= linear), |
679 | * it should be considered in-sync. */ | |
2c44337b | 680 | if (dm_list_size(&lv->segments) == 1 && first_seg(lv)->area_count == 1) { |
8191fe4f | 681 | *percent = PERCENT_100; |
876003dc AK |
682 | return 1; |
683 | } | |
684 | ||
10b29b8d AK |
685 | if (!activation()) |
686 | return 0; | |
687 | ||
7df72b3c AK |
688 | log_debug("Checking mirror percent for LV %s/%s", lv->vg->name, lv->name); |
689 | ||
2d6fcbf6 | 690 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
5f4b2acf | 691 | return_0; |
b65b777d AK |
692 | |
693 | if (!info.exists) | |
694 | return 0; | |
695 | ||
df390f17 | 696 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1))) |
5f4b2acf | 697 | return_0; |
10b29b8d | 698 | |
8191fe4f | 699 | if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent, event_nr))) |
10b29b8d AK |
700 | stack; |
701 | ||
702 | dev_manager_destroy(dm); | |
703 | ||
704 | return r; | |
705 | } | |
706 | ||
4aebd52c JEB |
707 | int lv_raid_percent(const struct logical_volume *lv, percent_t *percent) |
708 | { | |
709 | return lv_mirror_percent(lv->vg->cmd, lv, 0, percent, NULL); | |
710 | } | |
711 | ||
34507894 ZK |
712 | /* |
713 | * Returns 1 if percent set, else 0 on failure. | |
714 | */ | |
715 | int lv_thin_pool_percent(const struct logical_volume *lv, percent_t *percent) | |
716 | { | |
717 | int r; | |
718 | struct dev_manager *dm; | |
719 | ||
720 | if (!activation()) | |
721 | return 0; | |
722 | ||
723 | log_debug("Checking thin pool percent for LV %s/%s", lv->vg->name, lv->name); | |
724 | ||
725 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1))) | |
726 | return_0; | |
727 | ||
728 | if (!(r = dev_manager_thin_pool_percent(dm, lv, percent))) | |
729 | stack; | |
730 | ||
731 | dev_manager_destroy(dm); | |
732 | ||
733 | return r; | |
734 | } | |
735 | ||
ab9663f3 | 736 | static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv) |
2ba80b43 | 737 | { |
199e490e | 738 | struct lvinfo info; |
2ba80b43 | 739 | |
2d6fcbf6 | 740 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) { |
2ba80b43 | 741 | stack; |
de6c9183 | 742 | return -1; |
2ba80b43 JT |
743 | } |
744 | ||
de6c9183 | 745 | return info.exists; |
2ba80b43 JT |
746 | } |
747 | ||
f894b4b1 | 748 | static int _lv_open_count(struct cmd_context *cmd, struct logical_volume *lv) |
5986ec94 | 749 | { |
199e490e | 750 | struct lvinfo info; |
5986ec94 | 751 | |
2d6fcbf6 | 752 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) { |
5986ec94 | 753 | stack; |
de6c9183 | 754 | return -1; |
5986ec94 JT |
755 | } |
756 | ||
de6c9183 | 757 | return info.open_count; |
5986ec94 JT |
758 | } |
759 | ||
81beded3 | 760 | static int _lv_activate_lv(struct logical_volume *lv, struct lv_activate_opts *laopts) |
b1713d28 | 761 | { |
6d52fb46 | 762 | int r; |
de6c9183 | 763 | struct dev_manager *dm; |
b1713d28 | 764 | |
df390f17 | 765 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, (lv->status & PVMOVE) ? 0 : 1))) |
5f4b2acf | 766 | return_0; |
ae2bb665 | 767 | |
81beded3 | 768 | if (!(r = dev_manager_activate(dm, lv, laopts))) |
6d52fb46 | 769 | stack; |
ae2bb665 | 770 | |
de6c9183 | 771 | dev_manager_destroy(dm); |
ae2bb665 | 772 | return r; |
b1713d28 | 773 | } |
a381c45a | 774 | |
81beded3 ZK |
775 | static int _lv_preload(struct logical_volume *lv, struct lv_activate_opts *laopts, |
776 | int *flush_required) | |
0a5e4a14 | 777 | { |
a18dcfb5 | 778 | int r = 0; |
de6c9183 | 779 | struct dev_manager *dm; |
a18dcfb5 AK |
780 | int old_readonly = laopts->read_only; |
781 | ||
782 | laopts->read_only = _passes_readonly_filter(lv->vg->cmd, lv); | |
37ed70b9 | 783 | |
df390f17 | 784 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, (lv->status & PVMOVE) ? 0 : 1))) |
a18dcfb5 | 785 | goto_out; |
5f4b2acf | 786 | |
81beded3 | 787 | if (!(r = dev_manager_preload(dm, lv, laopts, flush_required))) |
6d52fb46 | 788 | stack; |
5f4b2acf AK |
789 | |
790 | dev_manager_destroy(dm); | |
a18dcfb5 AK |
791 | |
792 | laopts->read_only = old_readonly; | |
793 | out: | |
5f4b2acf AK |
794 | return r; |
795 | } | |
796 | ||
797 | static int _lv_deactivate(struct logical_volume *lv) | |
798 | { | |
799 | int r; | |
800 | struct dev_manager *dm; | |
801 | ||
df390f17 | 802 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1))) |
5f4b2acf | 803 | return_0; |
37ed70b9 | 804 | |
de6c9183 | 805 | if (!(r = dev_manager_deactivate(dm, lv))) |
37ed70b9 | 806 | stack; |
37ed70b9 | 807 | |
de6c9183 JT |
808 | dev_manager_destroy(dm); |
809 | return r; | |
37ed70b9 JT |
810 | } |
811 | ||
81beded3 ZK |
812 | static int _lv_suspend_lv(struct logical_volume *lv, struct lv_activate_opts *laopts, |
813 | int lockfs, int flush_required) | |
4a624ca0 | 814 | { |
20c5fcf7 AK |
815 | int r; |
816 | struct dev_manager *dm; | |
c2d72fd4 | 817 | |
a18dcfb5 AK |
818 | laopts->read_only = _passes_readonly_filter(lv->vg->cmd, lv); |
819 | ||
df390f17 AK |
820 | /* |
821 | * When we are asked to manipulate (normally suspend/resume) the PVMOVE | |
822 | * device directly, we don't want to touch the devices that use it. | |
823 | */ | |
824 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, (lv->status & PVMOVE) ? 0 : 1))) | |
5f4b2acf | 825 | return_0; |
0a5e4a14 | 826 | |
81beded3 | 827 | if (!(r = dev_manager_suspend(dm, lv, laopts, lockfs, flush_required))) |
37ed70b9 | 828 | stack; |
0a5e4a14 | 829 | |
20c5fcf7 AK |
830 | dev_manager_destroy(dm); |
831 | return r; | |
6d52fb46 | 832 | } |
4a624ca0 | 833 | |
8c013da4 | 834 | /* |
f75c11ed | 835 | * These two functions return the number of visible LVs in the state, |
7df72b3c | 836 | * or -1 on error. FIXME Check this. |
8c013da4 | 837 | */ |
65752052 | 838 | int lvs_in_vg_activated(struct volume_group *vg) |
f047219b | 839 | { |
60f13f01 | 840 | struct lv_list *lvl; |
94b8220f | 841 | int count = 0; |
37ed70b9 | 842 | |
d1d9800e AK |
843 | if (!activation()) |
844 | return 0; | |
845 | ||
7df72b3c | 846 | dm_list_iterate_items(lvl, &vg->lvs) |
59d8429c | 847 | if (lv_is_visible(lvl->lv)) |
ab9663f3 | 848 | count += (_lv_active(vg->cmd, lvl->lv) == 1); |
7df72b3c AK |
849 | |
850 | log_debug("Counted %d active LVs in VG %s", count, vg->name); | |
37ed70b9 JT |
851 | |
852 | return count; | |
f047219b | 853 | } |
2ba80b43 | 854 | |
08c9ff43 | 855 | int lvs_in_vg_opened(const struct volume_group *vg) |
2ba80b43 | 856 | { |
08c9ff43 | 857 | const struct lv_list *lvl; |
94b8220f | 858 | int count = 0; |
2ba80b43 | 859 | |
d1d9800e AK |
860 | if (!activation()) |
861 | return 0; | |
862 | ||
7df72b3c | 863 | dm_list_iterate_items(lvl, &vg->lvs) |
87371d48 | 864 | if (lv_is_visible(lvl->lv)) |
f894b4b1 | 865 | count += (_lv_open_count(vg->cmd, lvl->lv) > 0); |
7df72b3c AK |
866 | |
867 | log_debug("Counted %d open LVs in VG %s", count, vg->name); | |
2ba80b43 JT |
868 | |
869 | return count; | |
870 | } | |
413cc918 | 871 | |
5ca6698f | 872 | /* |
27ff8813 JEB |
873 | * _lv_is_active |
874 | * @lv: logical volume being queried | |
875 | * @locally: set if active locally (when provided) | |
876 | * @exclusive: set if active exclusively (when provided) | |
877 | * | |
5ca6698f | 878 | * Determine whether an LV is active locally or in a cluster. |
27ff8813 JEB |
879 | * In addition to the return code which indicates whether or |
880 | * not the LV is active somewhere, two other values are set | |
881 | * to yield more information about the status of the activation: | |
882 | * return locally exclusively status | |
883 | * ====== ======= =========== ====== | |
884 | * 0 0 0 not active | |
885 | * 1 0 0 active remotely | |
886 | * 1 0 1 exclusive remotely | |
887 | * 1 1 0 active locally and possibly remotely | |
888 | * 1 1 1 exclusive locally (or local && !cluster) | |
889 | * The VG lock must be held to call this function. | |
890 | * | |
891 | * Returns: 0 or 1 | |
5ca6698f | 892 | */ |
27ff8813 JEB |
893 | static int _lv_is_active(struct logical_volume *lv, |
894 | int *locally, int *exclusive) | |
5ca6698f | 895 | { |
27ff8813 JEB |
896 | int r, l, e; /* remote, local, and exclusive */ |
897 | ||
898 | r = l = e = 0; | |
6ac30c94 | 899 | |
ab9663f3 | 900 | if (_lv_active(lv->vg->cmd, lv)) |
27ff8813 | 901 | l = 1; |
5ca6698f | 902 | |
27ff8813 JEB |
903 | if (!vg_is_clustered(lv->vg)) { |
904 | e = 1; /* exclusive by definition */ | |
905 | goto out; | |
906 | } | |
907 | ||
908 | /* Active locally, and the caller doesn't care about exclusive */ | |
909 | if (l && !exclusive) | |
910 | goto out; | |
5ca6698f | 911 | |
27ff8813 JEB |
912 | if ((r = remote_lock_held(lv->lvid.s, &e)) >= 0) |
913 | goto out; | |
6ac30c94 MB |
914 | |
915 | /* | |
27ff8813 JEB |
916 | * If lock query is not supported (due to interfacing with old |
917 | * code), then we cannot evaluate exclusivity properly. | |
918 | * | |
919 | * Old users of this function will never be affected by this, | |
920 | * since they are only concerned about active vs. not active. | |
921 | * New users of this function who specifically ask for 'exclusive' | |
922 | * will be given an error message. | |
6ac30c94 | 923 | */ |
27ff8813 JEB |
924 | if (l) { |
925 | if (exclusive) | |
926 | log_error("Unable to determine exclusivity of %s", | |
927 | lv->name); | |
928 | goto out; | |
929 | } | |
930 | ||
f3d8974d | 931 | /* FIXME: Is this fallback alright? */ |
6ac30c94 | 932 | if (activate_lv_excl(lv->vg->cmd, lv)) { |
56b3d204 MS |
933 | if (!deactivate_lv(lv->vg->cmd, lv)) |
934 | stack; | |
f3d8974d | 935 | /* FIXME: locally & exclusive are undefined. */ |
25a2e7b8 | 936 | return 0; |
6ac30c94 | 937 | } |
f3d8974d | 938 | /* FIXME: Check exclusive value here. */ |
27ff8813 JEB |
939 | out: |
940 | if (locally) | |
941 | *locally = l; | |
942 | if (exclusive) | |
943 | *exclusive = e; | |
944 | ||
945 | log_very_verbose("%s/%s is %sactive%s%s", | |
946 | lv->vg->name, lv->name, | |
947 | (r || l) ? "" : "not ", | |
948 | (exclusive && e) ? " exclusive" : "", | |
949 | e ? (l ? " locally" : " remotely") : ""); | |
950 | ||
951 | return r || l; | |
952 | } | |
953 | ||
954 | int lv_is_active(struct logical_volume *lv) | |
955 | { | |
956 | return _lv_is_active(lv, NULL, NULL); | |
957 | } | |
958 | ||
9e277b9e | 959 | int lv_is_active_but_not_locally(struct logical_volume *lv) |
27ff8813 JEB |
960 | { |
961 | int l; | |
9e277b9e | 962 | return _lv_is_active(lv, &l, NULL) && !l; |
27ff8813 | 963 | } |
27ff8813 | 964 | |
b19f0121 JEB |
965 | int lv_is_active_exclusive(struct logical_volume *lv) |
966 | { | |
967 | int e; | |
968 | ||
969 | return _lv_is_active(lv, NULL, &e) && e; | |
970 | } | |
971 | ||
27ff8813 JEB |
972 | int lv_is_active_exclusive_locally(struct logical_volume *lv) |
973 | { | |
974 | int l, e; | |
7df72b3c | 975 | |
27ff8813 JEB |
976 | return _lv_is_active(lv, &l, &e) && l && e; |
977 | } | |
978 | ||
979 | int lv_is_active_exclusive_remotely(struct logical_volume *lv) | |
980 | { | |
981 | int l, e; | |
7df72b3c | 982 | |
27ff8813 | 983 | return _lv_is_active(lv, &l, &e) && !l && e; |
5ca6698f DW |
984 | } |
985 | ||
d1e8046f AK |
986 | #ifdef DMEVENTD |
987 | static struct dm_event_handler *_create_dm_event_handler(struct cmd_context *cmd, const char *dmuuid, const char *dso, | |
988 | const int timeout, enum dm_event_mask mask) | |
989 | { | |
990 | struct dm_event_handler *dmevh; | |
991 | ||
992 | if (!(dmevh = dm_event_handler_create())) | |
993 | return_NULL; | |
994 | ||
995 | if (dm_event_handler_set_dmeventd_path(dmevh, find_config_tree_str(cmd, "dmeventd/executable", NULL))) | |
996 | goto_bad; | |
997 | ||
998 | if (dm_event_handler_set_dso(dmevh, dso)) | |
999 | goto_bad; | |
1000 | ||
1001 | if (dm_event_handler_set_uuid(dmevh, dmuuid)) | |
1002 | goto_bad; | |
1003 | ||
1004 | dm_event_handler_set_timeout(dmevh, timeout); | |
1005 | dm_event_handler_set_event_mask(dmevh, mask); | |
1006 | ||
1007 | return dmevh; | |
1008 | ||
1009 | bad: | |
1010 | dm_event_handler_destroy(dmevh); | |
1011 | return NULL; | |
1012 | } | |
1013 | ||
1014 | char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath) | |
1015 | { | |
1016 | char *path; | |
1017 | ||
1018 | if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) { | |
1019 | log_error("Failed to allocate dmeventd library path."); | |
1020 | return NULL; | |
1021 | } | |
1022 | ||
1023 | get_shared_library_path(cmd, libpath, path, PATH_MAX); | |
1024 | ||
1025 | return path; | |
1026 | } | |
1027 | ||
2bc1d759 ZK |
1028 | static char *_build_target_uuid(struct cmd_context *cmd, struct logical_volume *lv) |
1029 | { | |
1030 | const char *layer; | |
1031 | ||
1032 | if (lv_is_thin_pool(lv)) | |
1033 | layer = "tpool"; /* Monitor "tpool" for the "thin pool". */ | |
1034 | else if (lv_is_origin(lv)) | |
1035 | layer = "real"; /* Monitor "real" for "snapshot-origin". */ | |
1036 | else | |
1037 | layer = NULL; | |
1038 | ||
1039 | return build_dm_uuid(cmd->mem, lv->lvid.s, layer); | |
1040 | } | |
1041 | ||
f92b4f94 AK |
1042 | int target_registered_with_dmeventd(struct cmd_context *cmd, const char *dso, |
1043 | struct logical_volume *lv, int *pending) | |
d1e8046f AK |
1044 | { |
1045 | char *uuid; | |
1046 | enum dm_event_mask evmask = 0; | |
1047 | struct dm_event_handler *dmevh; | |
d1e8046f AK |
1048 | *pending = 0; |
1049 | ||
1050 | if (!dso) | |
1051 | return_0; | |
1052 | ||
2bc1d759 | 1053 | if (!(uuid = _build_target_uuid(cmd, lv))) |
d1e8046f AK |
1054 | return_0; |
1055 | ||
1056 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, 0, DM_EVENT_ALL_ERRORS))) | |
1057 | return_0; | |
1058 | ||
1059 | if (dm_event_get_registered_device(dmevh, 0)) { | |
1060 | dm_event_handler_destroy(dmevh); | |
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | evmask = dm_event_handler_get_event_mask(dmevh); | |
1065 | if (evmask & DM_EVENT_REGISTRATION_PENDING) { | |
1066 | *pending = 1; | |
1067 | evmask &= ~DM_EVENT_REGISTRATION_PENDING; | |
1068 | } | |
1069 | ||
1070 | dm_event_handler_destroy(dmevh); | |
1071 | ||
1072 | return evmask; | |
1073 | } | |
1074 | ||
f92b4f94 | 1075 | int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv, |
d1e8046f AK |
1076 | int evmask __attribute__((unused)), int set, int timeout) |
1077 | { | |
1078 | char *uuid; | |
1079 | struct dm_event_handler *dmevh; | |
1080 | int r; | |
1081 | ||
1082 | if (!dso) | |
1083 | return_0; | |
1084 | ||
f92b4f94 | 1085 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
2bc1d759 | 1086 | if (!(uuid = _build_target_uuid(cmd, lv))) |
d1e8046f AK |
1087 | return_0; |
1088 | ||
1089 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, timeout, | |
1090 | DM_EVENT_ALL_ERRORS | (timeout ? DM_EVENT_TIMEOUT : 0)))) | |
1091 | return_0; | |
1092 | ||
1093 | r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh); | |
1094 | ||
1095 | dm_event_handler_destroy(dmevh); | |
1096 | ||
1097 | if (!r) | |
1098 | return_0; | |
1099 | ||
1100 | log_info("%s %s for events", set ? "Monitored" : "Unmonitored", uuid); | |
1101 | ||
1102 | return 1; | |
1103 | } | |
1104 | ||
1105 | #endif | |
1106 | ||
3e3d5d85 | 1107 | /* |
8a37910d AK |
1108 | * Returns 0 if an attempt to (un)monitor the device failed. |
1109 | * Returns 1 otherwise. | |
3e3d5d85 | 1110 | */ |
2d6fcbf6 | 1111 | int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv, |
81beded3 | 1112 | const struct lv_activate_opts *laopts, int monitor) |
15d91f5a | 1113 | { |
ed09d7e3 | 1114 | #ifdef DMEVENTD |
8a37910d AK |
1115 | int i, pending = 0, monitored; |
1116 | int r = 1; | |
2c44337b | 1117 | struct dm_list *tmp, *snh, *snht; |
15d91f5a | 1118 | struct lv_segment *seg; |
7a369d37 | 1119 | struct lv_segment *log_seg; |
24f4552b | 1120 | int (*monitor_fn) (struct lv_segment *s, int e); |
4e9083db | 1121 | uint32_t s; |
81beded3 ZK |
1122 | static const struct lv_activate_opts zlaopts = { 0 }; |
1123 | ||
1124 | if (!laopts) | |
1125 | laopts = &zlaopts; | |
15d91f5a | 1126 | |
20db8ffc AK |
1127 | /* skip dmeventd code altogether */ |
1128 | if (dmeventd_monitor_mode() == DMEVENTD_MONITOR_IGNORE) | |
1129 | return 1; | |
1130 | ||
8a37910d AK |
1131 | /* |
1132 | * Nothing to do if dmeventd configured not to be used. | |
1133 | */ | |
1134 | if (monitor && !dmeventd_monitor_mode()) | |
3e3d5d85 AK |
1135 | return 1; |
1136 | ||
67961c7c PR |
1137 | /* |
1138 | * In case of a snapshot device, we monitor lv->snapshot->lv, | |
1139 | * not the actual LV itself. | |
1140 | */ | |
c6168a14 ZK |
1141 | if (lv_is_cow(lv) && (laopts->no_merging || !lv_is_merging_cow(lv))) |
1142 | return monitor_dev_for_events(cmd, lv->snapshot->lv, NULL, monitor); | |
67961c7c PR |
1143 | |
1144 | /* | |
1145 | * In case this LV is a snapshot origin, we instead monitor | |
f92b4f94 AK |
1146 | * each of its respective snapshots. The origin itself may |
1147 | * also need to be monitored if it is a mirror, for example. | |
67961c7c | 1148 | */ |
81beded3 | 1149 | if (!laopts->origin_only && lv_is_origin(lv)) |
2c44337b AK |
1150 | dm_list_iterate_safe(snh, snht, &lv->snapshot_segs) |
1151 | if (!monitor_dev_for_events(cmd, dm_list_struct_base(snh, | |
81beded3 | 1152 | struct lv_segment, origin_list)->cow, NULL, monitor)) |
0c06de63 | 1153 | r = 0; |
67961c7c | 1154 | |
7a369d37 JEB |
1155 | /* |
1156 | * If the volume is mirrored and its log is also mirrored, monitor | |
1157 | * the log volume as well. | |
1158 | */ | |
1159 | if ((seg = first_seg(lv)) != NULL && seg->log_lv != NULL && | |
1160 | (log_seg = first_seg(seg->log_lv)) != NULL && | |
1161 | seg_is_mirrored(log_seg)) | |
81beded3 | 1162 | if (!monitor_dev_for_events(cmd, seg->log_lv, NULL, monitor)) |
7a369d37 JEB |
1163 | r = 0; |
1164 | ||
2c44337b AK |
1165 | dm_list_iterate(tmp, &lv->segments) { |
1166 | seg = dm_list_item(tmp, struct lv_segment); | |
15d91f5a | 1167 | |
4e9083db AK |
1168 | /* Recurse for AREA_LV */ |
1169 | for (s = 0; s < seg->area_count; s++) { | |
1170 | if (seg_type(seg, s) != AREA_LV) | |
1171 | continue; | |
81beded3 | 1172 | if (!monitor_dev_for_events(cmd, seg_lv(seg, s), NULL, |
4e9083db AK |
1173 | monitor)) { |
1174 | log_error("Failed to %smonitor %s", | |
1175 | monitor ? "" : "un", | |
1176 | seg_lv(seg, s)->name); | |
1177 | r = 0; | |
1178 | } | |
1179 | } | |
1180 | ||
8ef6eb30 AK |
1181 | if (!seg_monitored(seg) || (seg->status & PVMOVE)) |
1182 | continue; | |
8a37910d AK |
1183 | |
1184 | monitor_fn = NULL; | |
ed09d7e3 | 1185 | |
8ef6eb30 | 1186 | /* Check monitoring status */ |
8a37910d AK |
1187 | if (seg->segtype->ops->target_monitored) |
1188 | monitored = seg->segtype->ops->target_monitored(seg, &pending); | |
8ef6eb30 AK |
1189 | else |
1190 | continue; /* segtype doesn't support registration */ | |
1191 | ||
1192 | /* | |
1193 | * FIXME: We should really try again if pending | |
1194 | */ | |
8a37910d | 1195 | monitored = (pending) ? 0 : monitored; |
8ef6eb30 | 1196 | |
8a37910d AK |
1197 | if (monitor) { |
1198 | if (monitored) | |
8ef6eb30 | 1199 | log_verbose("%s/%s already monitored.", lv->vg->name, lv->name); |
8a37910d AK |
1200 | else if (seg->segtype->ops->target_monitor_events) |
1201 | monitor_fn = seg->segtype->ops->target_monitor_events; | |
8ef6eb30 | 1202 | } else { |
8a37910d | 1203 | if (!monitored) |
8ef6eb30 | 1204 | log_verbose("%s/%s already not monitored.", lv->vg->name, lv->name); |
8a37910d AK |
1205 | else if (seg->segtype->ops->target_unmonitor_events) |
1206 | monitor_fn = seg->segtype->ops->target_unmonitor_events; | |
8ef6eb30 | 1207 | } |
15d91f5a | 1208 | |
8ef6eb30 | 1209 | /* Do [un]monitor */ |
8a37910d | 1210 | if (!monitor_fn) |
3e3d5d85 | 1211 | continue; |
e24e7130 | 1212 | |
85a80e05 AK |
1213 | log_verbose("%sonitoring %s/%s%s", monitor ? "M" : "Not m", lv->vg->name, lv->name, |
1214 | test_mode() ? " [Test mode: skipping this]" : ""); | |
1215 | ||
1216 | /* FIXME Test mode should really continue a bit further. */ | |
1217 | if (test_mode()) | |
1218 | continue; | |
8a37910d | 1219 | |
3e3d5d85 | 1220 | /* FIXME specify events */ |
57fc4cc0 | 1221 | if (!monitor_fn(seg, 0)) { |
8a37910d AK |
1222 | log_error("%s/%s: %s segment monitoring function failed.", |
1223 | lv->vg->name, lv->name, seg->segtype->name); | |
1224 | return 0; | |
e24e7130 | 1225 | } |
3e3d5d85 | 1226 | |
8ef6eb30 AK |
1227 | /* Check [un]monitor results */ |
1228 | /* Try a couple times if pending, but not forever... */ | |
1229 | for (i = 0; i < 10; i++) { | |
1230 | pending = 0; | |
8a37910d | 1231 | monitored = seg->segtype->ops->target_monitored(seg, &pending); |
8ef6eb30 | 1232 | if (pending || |
8a37910d AK |
1233 | (!monitored && monitor) || |
1234 | (monitored && !monitor)) | |
1235 | log_very_verbose("%s/%s %smonitoring still pending: waiting...", | |
1236 | lv->vg->name, lv->name, monitor ? "" : "un"); | |
8ef6eb30 AK |
1237 | else |
1238 | break; | |
1239 | sleep(1); | |
1240 | } | |
1241 | ||
85a80e05 AK |
1242 | if (r) |
1243 | r = (monitored && monitor) || (!monitored && !monitor); | |
15d91f5a | 1244 | } |
e6493477 | 1245 | |
3e3d5d85 AK |
1246 | return r; |
1247 | #else | |
15d91f5a | 1248 | return 1; |
3e3d5d85 | 1249 | #endif |
15d91f5a | 1250 | } |
15d91f5a | 1251 | |
0f2a4ca2 AK |
1252 | struct detached_lv_data { |
1253 | struct logical_volume *lv_pre; | |
1254 | struct lv_activate_opts *laopts; | |
1255 | int *flush_required; | |
1256 | }; | |
1257 | ||
1258 | static int _preload_detached_lv(struct cmd_context *cmd, struct logical_volume *lv, void *data) | |
1259 | { | |
1260 | struct detached_lv_data *detached = data; | |
1261 | struct lv_list *lvl_pre; | |
1262 | ||
1263 | if ((lvl_pre = find_lv_in_vg(detached->lv_pre->vg, lv->name))) { | |
ee840ff1 | 1264 | if (lv_is_visible(lvl_pre->lv) && lv_is_active(lv) && (!lv_is_cow(lv) || !lv_is_cow(lvl_pre->lv)) && |
0f2a4ca2 AK |
1265 | !_lv_preload(lvl_pre->lv, detached->laopts, detached->flush_required)) |
1266 | return_0; | |
1267 | } | |
1268 | ||
1269 | return 1; | |
1270 | } | |
1271 | ||
658b5812 | 1272 | static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s, |
81beded3 | 1273 | struct lv_activate_opts *laopts, int error_if_not_suspended) |
413cc918 | 1274 | { |
df390f17 AK |
1275 | struct logical_volume *lv = NULL, *lv_pre = NULL, *pvmove_lv = NULL; |
1276 | struct lv_list *lvl_pre; | |
1277 | struct seg_list *sl; | |
ee840ff1 | 1278 | struct lv_segment *snap_seg; |
199e490e | 1279 | struct lvinfo info; |
eb91c4ee | 1280 | int r = 0, lockfs = 0, flush_required = 0; |
0f2a4ca2 | 1281 | struct detached_lv_data detached; |
413cc918 | 1282 | |
d1d9800e AK |
1283 | if (!activation()) |
1284 | return 1; | |
1285 | ||
8b888354 | 1286 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1287 | goto_out; |
8b888354 | 1288 | |
7a593325 | 1289 | /* Use precommitted metadata if present */ |
8b888354 | 1290 | if (!(lv_pre = lv_from_lvid(cmd, lvid_s, 1))) |
095bbca6 | 1291 | goto_out; |
413cc918 | 1292 | |
2d6fcbf6 AK |
1293 | /* Ignore origin_only unless LV is origin in both old and new metadata */ |
1294 | if (!lv_is_origin(lv) || !lv_is_origin(lv_pre)) | |
81beded3 | 1295 | laopts->origin_only = 0; |
2d6fcbf6 | 1296 | |
20c5fcf7 | 1297 | if (test_mode()) { |
81beded3 | 1298 | _skip("Suspending %s%s.", lv->name, laopts->origin_only ? " origin without snapshots" : ""); |
095bbca6 MB |
1299 | r = 1; |
1300 | goto out; | |
20c5fcf7 AK |
1301 | } |
1302 | ||
81beded3 | 1303 | if (!lv_info(cmd, lv, laopts->origin_only, &info, 0, 0)) |
095bbca6 | 1304 | goto_out; |
41967a02 | 1305 | |
095bbca6 | 1306 | if (!info.exists || info.suspended) { |
63ae0d14 MB |
1307 | if (!error_if_not_suspended) { |
1308 | r = 1; | |
1309 | if (info.suspended) | |
df390f17 | 1310 | critical_section_inc(cmd, "already suspended"); |
63ae0d14 | 1311 | } |
095bbca6 MB |
1312 | goto out; |
1313 | } | |
914c9723 | 1314 | |
9249fb12 ZK |
1315 | if (!lv_read_replicator_vgs(lv)) |
1316 | goto_out; | |
1317 | ||
c1fdeec9 MB |
1318 | lv_calculate_readahead(lv, NULL); |
1319 | ||
df390f17 | 1320 | /* |
3a8eb387 | 1321 | * Preload devices for the LV. |
df390f17 AK |
1322 | * If the PVMOVE LV is being removed, it's only present in the old |
1323 | * metadata and not the new, so we must explicitly add the new | |
1324 | * tables for all the changed LVs here, as the relationships | |
1325 | * are not found by walking the new metadata. | |
1326 | */ | |
3a8eb387 AK |
1327 | if (!(lv_pre->status & LOCKED) && |
1328 | (lv->status & LOCKED) && | |
1329 | (pvmove_lv = find_pvmove_lv_in_lv(lv))) { | |
1330 | /* Preload all the LVs above the PVMOVE LV */ | |
1331 | dm_list_iterate_items(sl, &pvmove_lv->segs_using_this_lv) { | |
1332 | if (!(lvl_pre = find_lv_in_vg(lv_pre->vg, sl->seg->lv->name))) { | |
ee840ff1 | 1333 | log_error(INTERNAL_ERROR "LV %s missing from preload metadata", sl->seg->lv->name); |
df390f17 AK |
1334 | goto out; |
1335 | } | |
81beded3 | 1336 | if (!_lv_preload(lvl_pre->lv, laopts, &flush_required)) |
df390f17 | 1337 | goto_out; |
3a8eb387 AK |
1338 | } |
1339 | /* Now preload the PVMOVE LV itself */ | |
1340 | if (!(lvl_pre = find_lv_in_vg(lv_pre->vg, pvmove_lv->name))) { | |
ee840ff1 | 1341 | log_error(INTERNAL_ERROR "LV %s missing from preload metadata", pvmove_lv->name); |
3a8eb387 AK |
1342 | goto out; |
1343 | } | |
1344 | if (!_lv_preload(lvl_pre->lv, laopts, &flush_required)) | |
1345 | goto_out; | |
1346 | } else { | |
1347 | if (!_lv_preload(lv_pre, laopts, &flush_required)) | |
1348 | /* FIXME Revert preloading */ | |
1349 | goto_out; | |
0f2a4ca2 | 1350 | |
3a8eb387 AK |
1351 | /* |
1352 | * Search for existing LVs that have become detached and preload them. | |
1353 | */ | |
1354 | detached.lv_pre = lv_pre; | |
1355 | detached.laopts = laopts; | |
1356 | detached.flush_required = &flush_required; | |
0f2a4ca2 | 1357 | |
3a8eb387 AK |
1358 | if (!for_each_sub_lv(cmd, lv, &_preload_detached_lv, &detached)) |
1359 | goto_out; | |
ee840ff1 AK |
1360 | |
1361 | /* | |
1362 | * Preload any snapshots that are being removed. | |
1363 | */ | |
1364 | if (!laopts->origin_only && lv_is_origin(lv)) { | |
1365 | dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list) { | |
a73e9a6c AK |
1366 | if (!(lvl_pre = find_lv_in_vg_by_lvid(lv_pre->vg, &snap_seg->cow->lvid))) { |
1367 | log_error(INTERNAL_ERROR "LV %s (%s) missing from preload metadata", | |
1368 | snap_seg->cow->name, snap_seg->cow->lvid.id[1].uuid); | |
ee840ff1 AK |
1369 | goto out; |
1370 | } | |
1371 | if (!lv_is_cow(lvl_pre->lv) && | |
1372 | !_lv_preload(lvl_pre->lv, laopts, &flush_required)) | |
1373 | goto_out; | |
1374 | } | |
1375 | } | |
5f4b2acf AK |
1376 | } |
1377 | ||
81beded3 | 1378 | if (!monitor_dev_for_events(cmd, lv, laopts, 0)) |
e24e7130 | 1379 | /* FIXME Consider aborting here */ |
ed09d7e3 AK |
1380 | stack; |
1381 | ||
df390f17 AK |
1382 | critical_section_inc(cmd, "suspending"); |
1383 | if (pvmove_lv) | |
1384 | critical_section_inc(cmd, "suspending pvmove LV"); | |
9cd3426d | 1385 | |
81beded3 | 1386 | if (!laopts->origin_only && |
2d6fcbf6 | 1387 | (lv_is_origin(lv_pre) || lv_is_cow(lv_pre))) |
9cd3426d AK |
1388 | lockfs = 1; |
1389 | ||
df390f17 AK |
1390 | /* |
1391 | * Suspending an LV directly above a PVMOVE LV also | |
1392 | * suspends other LVs using that same PVMOVE LV. | |
1393 | * FIXME Remove this and delay the 'clear node' until | |
1394 | * after the code knows whether there's a different | |
1395 | * inactive table to load or not instead so lv_suspend | |
1396 | * can be called separately for each LV safely. | |
1397 | */ | |
1398 | if ((lv_pre->vg->status & PRECOMMITTED) && | |
1399 | (lv_pre->status & LOCKED) && find_pvmove_lv_in_lv(lv_pre)) { | |
81beded3 | 1400 | if (!_lv_suspend_lv(lv_pre, laopts, lockfs, flush_required)) { |
df390f17 AK |
1401 | critical_section_dec(cmd, "failed precommitted suspend"); |
1402 | if (pvmove_lv) | |
1403 | critical_section_dec(cmd, "failed precommitted suspend (pvmove)"); | |
1404 | goto_out; | |
1405 | } | |
1406 | } else { | |
1407 | /* Normal suspend */ | |
81beded3 | 1408 | if (!_lv_suspend_lv(lv, laopts, lockfs, flush_required)) { |
df390f17 AK |
1409 | critical_section_dec(cmd, "failed suspend"); |
1410 | if (pvmove_lv) | |
1411 | critical_section_dec(cmd, "failed suspend (pvmove)"); | |
1412 | goto_out; | |
1413 | } | |
914c9723 | 1414 | } |
8c013da4 | 1415 | |
095bbca6 MB |
1416 | r = 1; |
1417 | out: | |
1418 | if (lv_pre) | |
077a6755 | 1419 | release_vg(lv_pre->vg); |
9249fb12 ZK |
1420 | if (lv) { |
1421 | lv_release_replicator_vgs(lv); | |
077a6755 | 1422 | release_vg(lv->vg); |
9249fb12 | 1423 | } |
095bbca6 MB |
1424 | |
1425 | return r; | |
413cc918 AK |
1426 | } |
1427 | ||
658b5812 | 1428 | /* Returns success if the device is not active */ |
2d6fcbf6 | 1429 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1430 | { |
81beded3 ZK |
1431 | struct lv_activate_opts laopts = { .origin_only = origin_only }; |
1432 | ||
1433 | return _lv_suspend(cmd, lvid_s, &laopts, 0); | |
658b5812 AK |
1434 | } |
1435 | ||
2d6fcbf6 AK |
1436 | /* No longer used */ |
1437 | /*********** | |
658b5812 AK |
1438 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
1439 | { | |
1440 | return _lv_suspend(cmd, lvid_s, 1); | |
1441 | } | |
2d6fcbf6 | 1442 | ***********/ |
658b5812 | 1443 | |
c054e7cc JEB |
1444 | /* |
1445 | * _lv_resume | |
1446 | * @cmd | |
1447 | * @lvid_s | |
1448 | * @origin_only | |
1449 | * @exclusive: This parameter only has an affect in cluster-context. | |
1450 | * It forces local target type to be used (instead of | |
1451 | * cluster-aware type). | |
1452 | * @error_if_not_active | |
1453 | */ | |
658b5812 | 1454 | static int _lv_resume(struct cmd_context *cmd, const char *lvid_s, |
81beded3 | 1455 | struct lv_activate_opts *laopts, int error_if_not_active) |
413cc918 AK |
1456 | { |
1457 | struct logical_volume *lv; | |
199e490e | 1458 | struct lvinfo info; |
095bbca6 | 1459 | int r = 0; |
413cc918 | 1460 | |
d1d9800e AK |
1461 | if (!activation()) |
1462 | return 1; | |
1463 | ||
7a593325 | 1464 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
75b37a11 | 1465 | goto_out; |
413cc918 | 1466 | |
2d6fcbf6 | 1467 | if (!lv_is_origin(lv)) |
81beded3 | 1468 | laopts->origin_only = 0; |
2d6fcbf6 | 1469 | |
20c5fcf7 | 1470 | if (test_mode()) { |
10d0d9c7 AK |
1471 | _skip("Resuming %s%s%s.", lv->name, laopts->origin_only ? " without snapshots" : "", |
1472 | laopts->revert ? " (reverting)" : ""); | |
095bbca6 MB |
1473 | r = 1; |
1474 | goto out; | |
20c5fcf7 AK |
1475 | } |
1476 | ||
10d0d9c7 | 1477 | log_debug("Resuming LV %s/%s%s%s%s.", lv->vg->name, lv->name, |
7df72b3c | 1478 | error_if_not_active ? "" : " if active", |
10d0d9c7 AK |
1479 | laopts->origin_only ? " without snapshots" : "", |
1480 | laopts->revert ? " (reverting)" : ""); | |
7df72b3c | 1481 | |
81beded3 | 1482 | if (!lv_info(cmd, lv, laopts->origin_only, &info, 0, 0)) |
095bbca6 | 1483 | goto_out; |
41967a02 | 1484 | |
095bbca6 | 1485 | if (!info.exists || !info.suspended) { |
4ec2ae86 ZK |
1486 | if (error_if_not_active) |
1487 | goto_out; | |
1488 | r = 1; | |
df390f17 AK |
1489 | if (!info.suspended) |
1490 | critical_section_dec(cmd, "already resumed"); | |
4ec2ae86 | 1491 | goto out; |
095bbca6 | 1492 | } |
914c9723 | 1493 | |
a18dcfb5 AK |
1494 | laopts->read_only = _passes_readonly_filter(cmd, lv); |
1495 | ||
81beded3 | 1496 | if (!_lv_activate_lv(lv, laopts)) |
75b37a11 | 1497 | goto_out; |
914c9723 | 1498 | |
df390f17 | 1499 | critical_section_dec(cmd, "resumed"); |
413cc918 | 1500 | |
81beded3 | 1501 | if (!monitor_dev_for_events(cmd, lv, laopts, 1)) |
ed09d7e3 | 1502 | stack; |
15d91f5a | 1503 | |
095bbca6 MB |
1504 | r = 1; |
1505 | out: | |
1506 | if (lv) | |
077a6755 | 1507 | release_vg(lv->vg); |
095bbca6 MB |
1508 | |
1509 | return r; | |
413cc918 AK |
1510 | } |
1511 | ||
658b5812 | 1512 | /* Returns success if the device is not active */ |
c054e7cc | 1513 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s, |
10d0d9c7 | 1514 | unsigned origin_only, unsigned exclusive, unsigned revert) |
658b5812 | 1515 | { |
81beded3 ZK |
1516 | struct lv_activate_opts laopts = { |
1517 | .origin_only = origin_only, | |
1518 | /* | |
1519 | * When targets are activated exclusively in a cluster, the | |
1520 | * non-clustered target should be used. This only happens | |
1521 | * if exclusive is set. | |
1522 | */ | |
10d0d9c7 AK |
1523 | .exclusive = exclusive, |
1524 | .revert = revert | |
81beded3 ZK |
1525 | }; |
1526 | ||
1527 | return _lv_resume(cmd, lvid_s, &laopts, 0); | |
658b5812 AK |
1528 | } |
1529 | ||
2d6fcbf6 | 1530 | int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1531 | { |
81beded3 ZK |
1532 | struct lv_activate_opts laopts = { .origin_only = origin_only, }; |
1533 | ||
1534 | return _lv_resume(cmd, lvid_s, &laopts, 1); | |
658b5812 AK |
1535 | } |
1536 | ||
64a95010 AK |
1537 | static int _lv_has_open_snapshots(struct logical_volume *lv) |
1538 | { | |
1539 | struct lv_segment *snap_seg; | |
1540 | struct lvinfo info; | |
1541 | int r = 0; | |
1542 | ||
1543 | dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list) { | |
2d6fcbf6 | 1544 | if (!lv_info(lv->vg->cmd, snap_seg->cow, 0, &info, 1, 0)) { |
64a95010 AK |
1545 | r = 1; |
1546 | continue; | |
1547 | } | |
1548 | ||
1549 | if (info.exists && info.open_count) { | |
1550 | log_error("LV %s/%s has open snapshot %s: " | |
1551 | "not deactivating", lv->vg->name, lv->name, | |
1552 | snap_seg->cow->name); | |
1553 | r = 1; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | return r; | |
1558 | } | |
1559 | ||
be326a2f | 1560 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) |
f4cbeaf0 AK |
1561 | { |
1562 | struct logical_volume *lv; | |
199e490e | 1563 | struct lvinfo info; |
095bbca6 | 1564 | int r = 0; |
f4cbeaf0 | 1565 | |
d1d9800e AK |
1566 | if (!activation()) |
1567 | return 1; | |
1568 | ||
7a593325 | 1569 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1570 | goto out; |
f4cbeaf0 | 1571 | |
20c5fcf7 AK |
1572 | if (test_mode()) { |
1573 | _skip("Deactivating '%s'.", lv->name); | |
095bbca6 MB |
1574 | r = 1; |
1575 | goto out; | |
20c5fcf7 AK |
1576 | } |
1577 | ||
7df72b3c AK |
1578 | log_debug("Deactivating %s/%s.", lv->vg->name, lv->name); |
1579 | ||
2d6fcbf6 | 1580 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) |
095bbca6 | 1581 | goto_out; |
41967a02 | 1582 | |
095bbca6 MB |
1583 | if (!info.exists) { |
1584 | r = 1; | |
1585 | goto out; | |
1586 | } | |
f4cbeaf0 | 1587 | |
64a95010 | 1588 | if (lv_is_visible(lv)) { |
125712be PR |
1589 | if (!lv_check_not_in_use(cmd, lv, &info)) |
1590 | goto_out; | |
1591 | ||
64a95010 AK |
1592 | if (lv_is_origin(lv) && _lv_has_open_snapshots(lv)) |
1593 | goto_out; | |
0cf96f33 AK |
1594 | } |
1595 | ||
9249fb12 ZK |
1596 | if (!lv_read_replicator_vgs(lv)) |
1597 | goto_out; | |
1598 | ||
c1fdeec9 MB |
1599 | lv_calculate_readahead(lv, NULL); |
1600 | ||
81beded3 | 1601 | if (!monitor_dev_for_events(cmd, lv, NULL, 0)) |
ed09d7e3 | 1602 | stack; |
15d91f5a | 1603 | |
df390f17 | 1604 | critical_section_inc(cmd, "deactivating"); |
914c9723 | 1605 | r = _lv_deactivate(lv); |
df390f17 | 1606 | critical_section_dec(cmd, "deactivated"); |
914c9723 | 1607 | |
401a40d9 | 1608 | if (!lv_info(cmd, lv, 0, &info, 0, 0) || info.exists) |
89a6cdfd | 1609 | r = 0; |
095bbca6 | 1610 | out: |
9249fb12 ZK |
1611 | if (lv) { |
1612 | lv_release_replicator_vgs(lv); | |
077a6755 | 1613 | release_vg(lv->vg); |
9249fb12 | 1614 | } |
095bbca6 | 1615 | |
914c9723 | 1616 | return r; |
f4cbeaf0 AK |
1617 | } |
1618 | ||
658b5812 AK |
1619 | /* Test if LV passes filter */ |
1620 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, | |
1621 | int *activate_lv) | |
1622 | { | |
1623 | struct logical_volume *lv; | |
095bbca6 | 1624 | int r = 0; |
658b5812 | 1625 | |
095bbca6 MB |
1626 | if (!activation()) { |
1627 | *activate_lv = 1; | |
1628 | return 1; | |
1629 | } | |
658b5812 | 1630 | |
424dd43e | 1631 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1632 | goto out; |
658b5812 AK |
1633 | |
1634 | if (!_passes_activation_filter(cmd, lv)) { | |
f7e3a19f PR |
1635 | log_verbose("Not activating %s/%s since it does not pass " |
1636 | "activation filter.", lv->vg->name, lv->name); | |
658b5812 | 1637 | *activate_lv = 0; |
095bbca6 MB |
1638 | } else |
1639 | *activate_lv = 1; | |
1640 | r = 1; | |
1641 | out: | |
1642 | if (lv) | |
077a6755 | 1643 | release_vg(lv->vg); |
658b5812 | 1644 | |
095bbca6 | 1645 | return r; |
658b5812 AK |
1646 | } |
1647 | ||
07d31831 | 1648 | static int _lv_activate(struct cmd_context *cmd, const char *lvid_s, |
81beded3 | 1649 | struct lv_activate_opts *laopts, int filter) |
f4cbeaf0 AK |
1650 | { |
1651 | struct logical_volume *lv; | |
199e490e | 1652 | struct lvinfo info; |
095bbca6 | 1653 | int r = 0; |
f4cbeaf0 | 1654 | |
d1d9800e AK |
1655 | if (!activation()) |
1656 | return 1; | |
1657 | ||
424dd43e | 1658 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1659 | goto out; |
f4cbeaf0 | 1660 | |
658b5812 | 1661 | if (filter && !_passes_activation_filter(cmd, lv)) { |
f7e3a19f PR |
1662 | log_error("Not activating %s/%s since it does not pass " |
1663 | "activation filter.", lv->vg->name, lv->name); | |
095bbca6 | 1664 | goto out; |
de17d760 AK |
1665 | } |
1666 | ||
cda35408 | 1667 | if ((!lv->vg->cmd->partial_activation) && (lv->status & PARTIAL_LV)) { |
8c5bcdab AK |
1668 | log_error("Refusing activation of partial LV %s. Use --partial to override.", |
1669 | lv->name); | |
095bbca6 | 1670 | goto_out; |
8c5bcdab AK |
1671 | } |
1672 | ||
b4048242 PR |
1673 | if (lv_has_unknown_segments(lv)) { |
1674 | log_error("Refusing activation of LV %s containing " | |
1675 | "an unrecognised segment.", lv->name); | |
1676 | goto_out; | |
1677 | } | |
1678 | ||
20c5fcf7 AK |
1679 | if (test_mode()) { |
1680 | _skip("Activating '%s'.", lv->name); | |
095bbca6 MB |
1681 | r = 1; |
1682 | goto out; | |
20c5fcf7 AK |
1683 | } |
1684 | ||
a18dcfb5 AK |
1685 | if (filter) |
1686 | laopts->read_only = _passes_readonly_filter(cmd, lv); | |
1687 | ||
1688 | log_debug("Activating %s/%s%s%s.", lv->vg->name, lv->name, | |
1689 | laopts->exclusive ? " exclusively" : "", | |
1690 | laopts->read_only ? " read-only" : ""); | |
7df72b3c | 1691 | |
2d6fcbf6 | 1692 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
095bbca6 | 1693 | goto_out; |
8c013da4 | 1694 | |
a18dcfb5 AK |
1695 | /* |
1696 | * Nothing to do? | |
1697 | */ | |
1698 | if (info.exists && !info.suspended && info.live_table && | |
1699 | (info.read_only == read_only_lv(lv, laopts))) { | |
095bbca6 MB |
1700 | r = 1; |
1701 | goto out; | |
1702 | } | |
f4cbeaf0 | 1703 | |
9249fb12 ZK |
1704 | if (!lv_read_replicator_vgs(lv)) |
1705 | goto_out; | |
1706 | ||
c1fdeec9 MB |
1707 | lv_calculate_readahead(lv, NULL); |
1708 | ||
df390f17 | 1709 | critical_section_inc(cmd, "activating"); |
81beded3 | 1710 | if (!(r = _lv_activate_lv(lv, laopts))) |
75b37a11 | 1711 | stack; |
df390f17 | 1712 | critical_section_dec(cmd, "activated"); |
914c9723 | 1713 | |
81beded3 | 1714 | if (r && !monitor_dev_for_events(cmd, lv, laopts, 1)) |
ed09d7e3 | 1715 | stack; |
15d91f5a | 1716 | |
095bbca6 | 1717 | out: |
9249fb12 ZK |
1718 | if (lv) { |
1719 | lv_release_replicator_vgs(lv); | |
077a6755 | 1720 | release_vg(lv->vg); |
9249fb12 | 1721 | } |
095bbca6 | 1722 | |
914c9723 | 1723 | return r; |
f4cbeaf0 | 1724 | } |
199e490e | 1725 | |
658b5812 | 1726 | /* Activate LV */ |
07d31831 | 1727 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1728 | { |
81beded3 ZK |
1729 | struct lv_activate_opts laopts = { .exclusive = exclusive }; |
1730 | ||
1731 | if (!_lv_activate(cmd, lvid_s, &laopts, 0)) | |
75b37a11 AK |
1732 | return_0; |
1733 | ||
1734 | return 1; | |
658b5812 AK |
1735 | } |
1736 | ||
1737 | /* Activate LV only if it passes filter */ | |
07d31831 | 1738 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1739 | { |
81beded3 ZK |
1740 | struct lv_activate_opts laopts = { .exclusive = exclusive }; |
1741 | ||
1742 | if (!_lv_activate(cmd, lvid_s, &laopts, 1)) | |
75b37a11 AK |
1743 | return_0; |
1744 | ||
1745 | return 1; | |
658b5812 AK |
1746 | } |
1747 | ||
f7dd6d84 AK |
1748 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) |
1749 | { | |
f7dd6d84 AK |
1750 | int r = 1; |
1751 | ||
8b076648 | 1752 | if (!lv) { |
2262b320 | 1753 | r = dm_mknodes(NULL); |
8b076648 AK |
1754 | fs_unlock(); |
1755 | return r; | |
1756 | } | |
1757 | ||
ab9663f3 MB |
1758 | if (!activation()) |
1759 | return 1; | |
f7dd6d84 | 1760 | |
ab9663f3 | 1761 | r = dev_manager_mknodes(lv); |
f7dd6d84 AK |
1762 | |
1763 | fs_unlock(); | |
1764 | ||
1765 | return r; | |
1766 | } | |
1767 | ||
352a99b9 AK |
1768 | /* |
1769 | * Does PV use VG somewhere in its construction? | |
1770 | * Returns 1 on failure. | |
1771 | */ | |
898e6f8e | 1772 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 1773 | struct volume_group *vg) |
352a99b9 | 1774 | { |
352a99b9 AK |
1775 | if (!activation()) |
1776 | return 0; | |
1777 | ||
1778 | if (!dm_is_dm_major(MAJOR(pv->dev->dev))) | |
1779 | return 0; | |
1780 | ||
898e6f8e | 1781 | return dev_manager_device_uses_vg(pv->dev, vg); |
352a99b9 AK |
1782 | } |
1783 | ||
2293567c AK |
1784 | void activation_release(void) |
1785 | { | |
1786 | dev_manager_release(); | |
1787 | } | |
1788 | ||
914c9723 AK |
1789 | void activation_exit(void) |
1790 | { | |
1791 | dev_manager_exit(); | |
1792 | } | |
199e490e | 1793 | #endif |