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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. |
ab8b85fb | 3 | * Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved. |
b1713d28 | 4 | * |
6606c3ae AK |
5 | * This file is part of LVM2. |
6 | * | |
7 | * This copyrighted material is made available to anyone wishing to use, | |
8 | * modify, copy, or redistribute it subject to the terms and conditions | |
be684599 | 9 | * of the GNU Lesser General Public License v.2.1. |
6606c3ae | 10 | * |
be684599 | 11 | * You should have received a copy of the GNU Lesser General Public License |
6606c3ae AK |
12 | * along with this program; if not, write to the Free Software Foundation, |
13 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
b1713d28 JT |
14 | */ |
15 | ||
d1d9800e | 16 | #include "lib.h" |
a381c45a | 17 | #include "metadata.h" |
b1713d28 | 18 | #include "activate.h" |
914c9723 | 19 | #include "memlock.h" |
78125be9 | 20 | #include "display.h" |
f7a14956 | 21 | #include "fs.h" |
f894b4b1 | 22 | #include "lvm-exec.h" |
7d1552c9 | 23 | #include "lvm-file.h" |
41b2fd5f | 24 | #include "lvm-string.h" |
413cc918 | 25 | #include "toolcontext.h" |
de6c9183 | 26 | #include "dev_manager.h" |
de17d760 | 27 | #include "str_list.h" |
4922197a | 28 | #include "config.h" |
352a99b9 | 29 | #include "filter.h" |
15d91f5a | 30 | #include "segtype.h" |
d1e8046f | 31 | #include "sharedlib.h" |
12137231 JT |
32 | |
33 | #include <limits.h> | |
5986ec94 | 34 | #include <fcntl.h> |
914c9723 | 35 | #include <unistd.h> |
12137231 | 36 | |
6d52fb46 | 37 | #define _skip(fmt, args...) log_very_verbose("Skipping: " fmt , ## args) |
b1713d28 | 38 | |
7d1552c9 AK |
39 | int lvm1_present(struct cmd_context *cmd) |
40 | { | |
41 | char path[PATH_MAX]; | |
42 | ||
0550c1b6 | 43 | if (dm_snprintf(path, sizeof(path), "%s/lvm/global", cmd->proc_dir) |
7d1552c9 AK |
44 | < 0) { |
45 | log_error("LVM1 proc global snprintf failed"); | |
46 | return 0; | |
47 | } | |
48 | ||
49 | if (path_exists(path)) | |
50 | return 1; | |
51 | else | |
52 | return 0; | |
53 | } | |
54 | ||
6c81ed26 | 55 | int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg, |
2c44337b | 56 | struct dm_list *modules) |
6c81ed26 AK |
57 | { |
58 | unsigned int s; | |
59 | struct lv_segment *seg2, *snap_seg; | |
2c44337b | 60 | struct dm_list *snh; |
6c81ed26 AK |
61 | |
62 | if (seg->segtype->ops->modules_needed && | |
63 | !seg->segtype->ops->modules_needed(mem, seg, modules)) { | |
64 | log_error("module string allocation failed"); | |
65 | return 0; | |
66 | } | |
67 | ||
68 | if (lv_is_origin(seg->lv)) | |
2c44337b | 69 | dm_list_iterate(snh, &seg->lv->snapshot_segs) |
6c81ed26 | 70 | if (!list_lv_modules(mem, |
2c44337b | 71 | dm_list_struct_base(snh, |
6c81ed26 AK |
72 | struct lv_segment, |
73 | origin_list)->cow, | |
74 | modules)) | |
75 | return_0; | |
76 | ||
77 | if (lv_is_cow(seg->lv)) { | |
78 | snap_seg = find_cow(seg->lv); | |
79 | if (snap_seg->segtype->ops->modules_needed && | |
80 | !snap_seg->segtype->ops->modules_needed(mem, snap_seg, | |
81 | modules)) { | |
82 | log_error("snap_seg module string allocation failed"); | |
83 | return 0; | |
84 | } | |
85 | } | |
86 | ||
87 | for (s = 0; s < seg->area_count; s++) { | |
88 | switch (seg_type(seg, s)) { | |
89 | case AREA_LV: | |
90 | seg2 = find_seg_by_le(seg_lv(seg, s), seg_le(seg, s)); | |
91 | if (seg2 && !list_segment_modules(mem, seg2, modules)) | |
92 | return_0; | |
93 | break; | |
94 | case AREA_PV: | |
95 | case AREA_UNASSIGNED: | |
96 | ; | |
97 | } | |
98 | } | |
99 | ||
100 | return 1; | |
101 | } | |
102 | ||
103 | int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv, | |
2c44337b | 104 | struct dm_list *modules) |
6c81ed26 AK |
105 | { |
106 | struct lv_segment *seg; | |
107 | ||
2c44337b | 108 | dm_list_iterate_items(seg, &lv->segments) |
6c81ed26 AK |
109 | if (!list_segment_modules(mem, seg, modules)) |
110 | return_0; | |
111 | ||
112 | return 1; | |
113 | } | |
114 | ||
199e490e AK |
115 | #ifndef DEVMAPPER_SUPPORT |
116 | void set_activation(int act) | |
117 | { | |
f2046e0a AK |
118 | static int warned = 0; |
119 | ||
120 | if (warned || !act) | |
121 | return; | |
122 | ||
123 | log_error("Compiled without libdevmapper support. " | |
124 | "Can't enable activation."); | |
125 | ||
126 | warned = 1; | |
199e490e AK |
127 | } |
128 | int activation(void) | |
129 | { | |
130 | return 0; | |
131 | } | |
132 | int library_version(char *version, size_t size) | |
133 | { | |
134 | return 0; | |
135 | } | |
136 | int driver_version(char *version, size_t size) | |
137 | { | |
138 | return 0; | |
139 | } | |
bbf83db1 AK |
140 | int target_version(const char *target_name, uint32_t *maj, |
141 | uint32_t *min, uint32_t *patchlevel) | |
142 | { | |
143 | return 0; | |
144 | } | |
ed82bfd2 AK |
145 | int target_present(struct cmd_context *cmd, const char *target_name, |
146 | int use_modprobe) | |
d1f4953a AK |
147 | { |
148 | return 0; | |
149 | } | |
2d6fcbf6 AK |
150 | int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, unsigned origin_only, |
151 | struct lvinfo *info, int with_open_count, int with_read_ahead) | |
199e490e AK |
152 | { |
153 | return 0; | |
154 | } | |
4bd9480d | 155 | int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 156 | unsigned origin_only, |
a6b22cf3 | 157 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
4bd9480d AK |
158 | { |
159 | return 0; | |
160 | } | |
8191fe4f | 161 | int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent) |
199e490e AK |
162 | { |
163 | return 0; | |
164 | } | |
aec21154 | 165 | int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv, |
8191fe4f | 166 | int wait, percent_t *percent, uint32_t *event_nr) |
10b29b8d AK |
167 | { |
168 | return 0; | |
169 | } | |
199e490e AK |
170 | int lvs_in_vg_activated(struct volume_group *vg) |
171 | { | |
172 | return 0; | |
173 | } | |
ab8b85fb | 174 | int lvs_in_vg_opened(const struct volume_group *vg) |
199e490e AK |
175 | { |
176 | return 0; | |
177 | } | |
2d6fcbf6 | 178 | /****** |
658b5812 AK |
179 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
180 | { | |
181 | return 1; | |
182 | } | |
2d6fcbf6 | 183 | *******/ |
ab8b85fb | 184 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
199e490e AK |
185 | { |
186 | return 1; | |
187 | } | |
ab8b85fb | 188 | int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 AK |
189 | { |
190 | return 1; | |
191 | } | |
ab8b85fb ZK |
192 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s, |
193 | unsigned origin_only, unsigned exclusive) | |
199e490e AK |
194 | { |
195 | return 1; | |
196 | } | |
197 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) | |
198 | { | |
199 | return 1; | |
200 | } | |
658b5812 AK |
201 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, |
202 | int *activate_lv) | |
203 | { | |
204 | return 1; | |
205 | } | |
07d31831 | 206 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
199e490e AK |
207 | { |
208 | return 1; | |
209 | } | |
07d31831 | 210 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 AK |
211 | { |
212 | return 1; | |
213 | } | |
f7dd6d84 AK |
214 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) |
215 | { | |
216 | return 1; | |
217 | } | |
0ce83a83 | 218 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 219 | struct volume_group *vg) |
352a99b9 AK |
220 | { |
221 | return 0; | |
222 | } | |
2293567c AK |
223 | void activation_release(void) |
224 | { | |
2293567c | 225 | } |
914c9723 AK |
226 | void activation_exit(void) |
227 | { | |
914c9723 | 228 | } |
ab8b85fb ZK |
229 | int lv_is_active(struct logical_volume *lv) |
230 | { | |
231 | return 0; | |
232 | } | |
233 | int lv_is_active_exclusive_locally(struct logical_volume *lv) | |
234 | { | |
235 | return 0; | |
236 | } | |
237 | int lv_is_active_exclusive_remotely(struct logical_volume *lv) | |
238 | { | |
239 | return 0; | |
240 | } | |
241 | int lv_check_transient(struct logical_volume *lv) | |
242 | { | |
243 | return 1; | |
244 | } | |
245 | int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv, | |
246 | unsigned origin_only, int monitor) | |
247 | { | |
248 | return 1; | |
249 | } | |
199e490e AK |
250 | #else /* DEVMAPPER_SUPPORT */ |
251 | ||
d1d9800e AK |
252 | static int _activation = 1; |
253 | ||
8ef2b021 | 254 | void set_activation(int act) |
d1d9800e | 255 | { |
8ef2b021 | 256 | if (act == _activation) |
d1d9800e AK |
257 | return; |
258 | ||
8ef2b021 | 259 | _activation = act; |
d1d9800e AK |
260 | if (_activation) |
261 | log_verbose("Activation enabled. Device-mapper kernel " | |
262 | "driver will be used."); | |
263 | else | |
e7ddf416 | 264 | log_warn("WARNING: Activation disabled. No device-mapper " |
bfe2b548 | 265 | "interaction will be attempted."); |
d1d9800e AK |
266 | } |
267 | ||
8ef2b021 | 268 | int activation(void) |
d1d9800e AK |
269 | { |
270 | return _activation; | |
271 | } | |
272 | ||
de17d760 AK |
273 | static int _passes_activation_filter(struct cmd_context *cmd, |
274 | struct logical_volume *lv) | |
275 | { | |
25579907 | 276 | const struct config_node *cn; |
760d1fac ZK |
277 | const struct config_value *cv; |
278 | const char *str; | |
de17d760 AK |
279 | char path[PATH_MAX]; |
280 | ||
2293567c | 281 | if (!(cn = find_config_tree_node(cmd, "activation/volume_list"))) { |
fefa4323 | 282 | log_verbose("activation/volume_list configuration setting " |
3122f963 PR |
283 | "not defined, checking only host tags for %s/%s", |
284 | lv->vg->name, lv->name); | |
fefa4323 | 285 | |
25579907 | 286 | /* If no host tags defined, activate */ |
2c44337b | 287 | if (dm_list_empty(&cmd->tags)) |
de17d760 AK |
288 | return 1; |
289 | ||
290 | /* If any host tag matches any LV or VG tag, activate */ | |
eb82bd05 AK |
291 | if (str_list_match_list(&cmd->tags, &lv->tags, NULL) || |
292 | str_list_match_list(&cmd->tags, &lv->vg->tags, NULL)) | |
de17d760 AK |
293 | return 1; |
294 | ||
fefa4323 PR |
295 | log_verbose("No host tag matches %s/%s", |
296 | lv->vg->name, lv->name); | |
297 | ||
de17d760 AK |
298 | /* Don't activate */ |
299 | return 0; | |
300 | } | |
f7e3a19f | 301 | else |
fefa4323 PR |
302 | log_verbose("activation/volume_list configuration setting " |
303 | "defined, checking the list to match %s/%s", | |
304 | lv->vg->name, lv->name); | |
305 | ||
f7e3a19f | 306 | for (cv = cn->v; cv; cv = cv->next) { |
de17d760 AK |
307 | if (cv->type != CFG_STRING) { |
308 | log_error("Ignoring invalid string in config file " | |
309 | "activation/volume_list"); | |
310 | continue; | |
311 | } | |
312 | str = cv->v.str; | |
313 | if (!*str) { | |
314 | log_error("Ignoring empty string in config file " | |
315 | "activation/volume_list"); | |
316 | continue; | |
317 | } | |
318 | ||
f7e3a19f | 319 | |
de17d760 AK |
320 | /* Tag? */ |
321 | if (*str == '@') { | |
322 | str++; | |
323 | if (!*str) { | |
324 | log_error("Ignoring empty tag in config file " | |
325 | "activation/volume_list"); | |
326 | continue; | |
327 | } | |
328 | /* If any host tag matches any LV or VG tag, activate */ | |
329 | if (!strcmp(str, "*")) { | |
eb82bd05 | 330 | if (str_list_match_list(&cmd->tags, &lv->tags, NULL) |
de17d760 | 331 | || str_list_match_list(&cmd->tags, |
eb82bd05 | 332 | &lv->vg->tags, NULL)) |
de17d760 AK |
333 | return 1; |
334 | else | |
335 | continue; | |
336 | } | |
337 | /* If supplied tag matches LV or VG tag, activate */ | |
338 | if (str_list_match_item(&lv->tags, str) || | |
339 | str_list_match_item(&lv->vg->tags, str)) | |
340 | return 1; | |
341 | else | |
342 | continue; | |
343 | } | |
13835b5f | 344 | if (!strchr(str, '/')) { |
de17d760 AK |
345 | /* vgname supplied */ |
346 | if (!strcmp(str, lv->vg->name)) | |
347 | return 1; | |
348 | else | |
349 | continue; | |
350 | } | |
351 | /* vgname/lvname */ | |
0550c1b6 | 352 | if (dm_snprintf(path, sizeof(path), "%s/%s", lv->vg->name, |
de17d760 | 353 | lv->name) < 0) { |
0550c1b6 | 354 | log_error("dm_snprintf error from %s/%s", lv->vg->name, |
de17d760 AK |
355 | lv->name); |
356 | continue; | |
357 | } | |
358 | if (!strcmp(path, str)) | |
359 | return 1; | |
360 | } | |
361 | ||
fefa4323 PR |
362 | log_verbose("No item supplied in activation/volume_list configuration " |
363 | "setting matches %s/%s", lv->vg->name, lv->name); | |
364 | ||
de17d760 AK |
365 | return 0; |
366 | } | |
367 | ||
fae0c576 AK |
368 | int library_version(char *version, size_t size) |
369 | { | |
d1d9800e AK |
370 | if (!activation()) |
371 | return 0; | |
372 | ||
f894b4b1 | 373 | return dm_get_library_version(version, size); |
fae0c576 AK |
374 | } |
375 | ||
fae0c576 AK |
376 | int driver_version(char *version, size_t size) |
377 | { | |
d1d9800e AK |
378 | if (!activation()) |
379 | return 0; | |
380 | ||
fae0c576 | 381 | log_very_verbose("Getting driver version"); |
fae0c576 | 382 | |
f894b4b1 | 383 | return dm_driver_version(version, size); |
fae0c576 AK |
384 | } |
385 | ||
bbf83db1 AK |
386 | int target_version(const char *target_name, uint32_t *maj, |
387 | uint32_t *min, uint32_t *patchlevel) | |
d1f4953a AK |
388 | { |
389 | int r = 0; | |
390 | struct dm_task *dmt; | |
391 | struct dm_versions *target, *last_target; | |
392 | ||
d1f4953a | 393 | log_very_verbose("Getting target version for %s", target_name); |
5f4b2acf AK |
394 | if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS))) |
395 | return_0; | |
d1f4953a AK |
396 | |
397 | if (!dm_task_run(dmt)) { | |
398 | log_debug("Failed to get %s target version", target_name); | |
399 | /* Assume this was because LIST_VERSIONS isn't supported */ | |
400 | return 1; | |
401 | } | |
402 | ||
403 | target = dm_task_get_versions(dmt); | |
404 | ||
405 | do { | |
406 | last_target = target; | |
407 | ||
408 | if (!strcmp(target_name, target->name)) { | |
409 | r = 1; | |
bbf83db1 AK |
410 | *maj = target->version[0]; |
411 | *min = target->version[1]; | |
412 | *patchlevel = target->version[2]; | |
d1f4953a AK |
413 | goto out; |
414 | } | |
415 | ||
d40d166f | 416 | target = (struct dm_versions *)((char *) target + target->next); |
d1f4953a AK |
417 | } while (last_target != target); |
418 | ||
419 | out: | |
420 | dm_task_destroy(dmt); | |
421 | ||
422 | return r; | |
423 | } | |
424 | ||
ed82bfd2 | 425 | int module_present(struct cmd_context *cmd, const char *target_name) |
f894b4b1 | 426 | { |
5619c629 | 427 | int ret = 0; |
03b49fe1 | 428 | #ifdef MODPROBE_CMD |
f894b4b1 | 429 | char module[128]; |
c8669f6b | 430 | const char *argv[3]; |
5619c629 MB |
431 | |
432 | if (dm_snprintf(module, sizeof(module), "dm-%s", target_name) < 0) { | |
433 | log_error("module_present module name too long: %s", | |
434 | target_name); | |
435 | return 0; | |
436 | } | |
437 | ||
c8669f6b ZK |
438 | argv[0] = MODPROBE_CMD; |
439 | argv[1] = module; | |
440 | argv[2] = NULL; | |
441 | ||
b1b38215 | 442 | ret = exec_cmd(cmd, argv, NULL, 0); |
03b49fe1 | 443 | #endif |
5619c629 MB |
444 | return ret; |
445 | } | |
446 | ||
ed82bfd2 AK |
447 | int target_present(struct cmd_context *cmd, const char *target_name, |
448 | int use_modprobe) | |
5619c629 MB |
449 | { |
450 | uint32_t maj, min, patchlevel; | |
f894b4b1 AK |
451 | |
452 | if (!activation()) | |
453 | return 0; | |
454 | ||
455 | #ifdef MODPROBE_CMD | |
5f4b2acf | 456 | if (use_modprobe) { |
bbf83db1 | 457 | if (target_version(target_name, &maj, &min, &patchlevel)) |
5f4b2acf | 458 | return 1; |
f894b4b1 | 459 | |
ed82bfd2 | 460 | if (!module_present(cmd, target_name)) |
5f4b2acf | 461 | return_0; |
f894b4b1 AK |
462 | } |
463 | #endif | |
464 | ||
bbf83db1 | 465 | return target_version(target_name, &maj, &min, &patchlevel); |
f894b4b1 AK |
466 | } |
467 | ||
de6c9183 JT |
468 | /* |
469 | * Returns 1 if info structure populated, else 0 on failure. | |
470 | */ | |
2d6fcbf6 | 471 | int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, unsigned origin_only, |
ab9663f3 | 472 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
37ed70b9 | 473 | { |
199e490e | 474 | struct dm_info dminfo; |
4a624ca0 | 475 | |
d1d9800e AK |
476 | if (!activation()) |
477 | return 0; | |
56cab8cc ZK |
478 | /* |
479 | * If open_count info is requested and we have to be sure our own udev | |
480 | * transactions are finished | |
481 | * For non-clustered locking type we are only interested for non-delete operation | |
482 | * in progress - as only those could lead to opened files | |
483 | */ | |
484 | if (with_open_count) { | |
485 | if (locking_is_clustered()) | |
486 | sync_local_dev_names(cmd); /* Wait to have udev in sync */ | |
f5f6dcbc | 487 | else if (fs_has_non_delete_ops()) |
56cab8cc ZK |
488 | fs_unlock(); /* For non clustered - wait if there are non-delete ops */ |
489 | } | |
d1d9800e | 490 | |
2d6fcbf6 | 491 | if (!dev_manager_info(lv->vg->cmd->mem, lv, origin_only ? "real" : NULL, with_open_count, |
ab9663f3 | 492 | with_read_ahead, &dminfo, &info->read_ahead)) |
5f4b2acf | 493 | return_0; |
4a624ca0 | 494 | |
199e490e AK |
495 | info->exists = dminfo.exists; |
496 | info->suspended = dminfo.suspended; | |
497 | info->open_count = dminfo.open_count; | |
498 | info->major = dminfo.major; | |
499 | info->minor = dminfo.minor; | |
500 | info->read_only = dminfo.read_only; | |
5f4b2acf AK |
501 | info->live_table = dminfo.live_table; |
502 | info->inactive_table = dminfo.inactive_table; | |
199e490e | 503 | |
f894b4b1 | 504 | return 1; |
de6c9183 | 505 | } |
a62ee8ad | 506 | |
4bd9480d | 507 | int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 508 | unsigned origin_only, |
a6b22cf3 | 509 | struct lvinfo *info, int with_open_count, int with_read_ahead) |
4bd9480d | 510 | { |
0548bcc2 | 511 | int r; |
4bd9480d AK |
512 | struct logical_volume *lv; |
513 | ||
7a593325 | 514 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
4bd9480d AK |
515 | return 0; |
516 | ||
2d6fcbf6 AK |
517 | if (!lv_is_origin(lv)) |
518 | origin_only = 0; | |
519 | ||
520 | r = lv_info(cmd, lv, origin_only, info, with_open_count, with_read_ahead); | |
2b82bd79 | 521 | free_vg(lv->vg); |
0548bcc2 MB |
522 | |
523 | return r; | |
4bd9480d AK |
524 | } |
525 | ||
d345bf2c PR |
526 | /* |
527 | * Returns 1 if percent set, else 0 on failure. | |
528 | */ | |
529 | int lv_check_transient(struct logical_volume *lv) | |
530 | { | |
531 | int r; | |
532 | struct dev_manager *dm; | |
533 | ||
534 | if (!activation()) | |
535 | return 0; | |
536 | ||
537 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) | |
538 | return_0; | |
539 | ||
540 | if (!(r = dev_manager_transient(dm, lv))) | |
541 | stack; | |
542 | ||
543 | dev_manager_destroy(dm); | |
544 | ||
545 | return r; | |
546 | } | |
547 | ||
1951dba9 AL |
548 | /* |
549 | * Returns 1 if percent set, else 0 on failure. | |
550 | */ | |
8191fe4f | 551 | int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent) |
1951dba9 AL |
552 | { |
553 | int r; | |
554 | struct dev_manager *dm; | |
555 | ||
d1d9800e AK |
556 | if (!activation()) |
557 | return 0; | |
558 | ||
5f4b2acf AK |
559 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
560 | return_0; | |
1951dba9 | 561 | |
8191fe4f | 562 | if (!(r = dev_manager_snapshot_percent(dm, lv, percent))) |
1951dba9 | 563 | stack; |
c826c0d1 | 564 | |
1951dba9 AL |
565 | dev_manager_destroy(dm); |
566 | ||
567 | return r; | |
568 | } | |
569 | ||
10b29b8d | 570 | /* FIXME Merge with snapshot_percent */ |
aec21154 | 571 | int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv, |
8191fe4f | 572 | int wait, percent_t *percent, uint32_t *event_nr) |
10b29b8d AK |
573 | { |
574 | int r; | |
575 | struct dev_manager *dm; | |
b65b777d | 576 | struct lvinfo info; |
10b29b8d | 577 | |
876003dc AK |
578 | /* If mirrored LV is temporarily shrinked to 1 area (= linear), |
579 | * it should be considered in-sync. */ | |
2c44337b | 580 | if (dm_list_size(&lv->segments) == 1 && first_seg(lv)->area_count == 1) { |
8191fe4f | 581 | *percent = PERCENT_100; |
876003dc AK |
582 | return 1; |
583 | } | |
584 | ||
10b29b8d AK |
585 | if (!activation()) |
586 | return 0; | |
587 | ||
2d6fcbf6 | 588 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
5f4b2acf | 589 | return_0; |
b65b777d AK |
590 | |
591 | if (!info.exists) | |
592 | return 0; | |
593 | ||
5f4b2acf AK |
594 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
595 | return_0; | |
10b29b8d | 596 | |
8191fe4f | 597 | if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent, event_nr))) |
10b29b8d AK |
598 | stack; |
599 | ||
600 | dev_manager_destroy(dm); | |
601 | ||
602 | return r; | |
603 | } | |
604 | ||
ab9663f3 | 605 | static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv) |
2ba80b43 | 606 | { |
199e490e | 607 | struct lvinfo info; |
2ba80b43 | 608 | |
2d6fcbf6 | 609 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) { |
2ba80b43 | 610 | stack; |
de6c9183 | 611 | return -1; |
2ba80b43 JT |
612 | } |
613 | ||
de6c9183 | 614 | return info.exists; |
2ba80b43 JT |
615 | } |
616 | ||
f894b4b1 | 617 | static int _lv_open_count(struct cmd_context *cmd, struct logical_volume *lv) |
5986ec94 | 618 | { |
199e490e | 619 | struct lvinfo info; |
5986ec94 | 620 | |
2d6fcbf6 | 621 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) { |
5986ec94 | 622 | stack; |
de6c9183 | 623 | return -1; |
5986ec94 JT |
624 | } |
625 | ||
de6c9183 | 626 | return info.open_count; |
5986ec94 JT |
627 | } |
628 | ||
2d6fcbf6 | 629 | static int _lv_activate_lv(struct logical_volume *lv, unsigned origin_only) |
b1713d28 | 630 | { |
6d52fb46 | 631 | int r; |
de6c9183 | 632 | struct dev_manager *dm; |
b1713d28 | 633 | |
5f4b2acf AK |
634 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
635 | return_0; | |
ae2bb665 | 636 | |
2d6fcbf6 | 637 | if (!(r = dev_manager_activate(dm, lv, origin_only))) |
6d52fb46 | 638 | stack; |
ae2bb665 | 639 | |
de6c9183 | 640 | dev_manager_destroy(dm); |
ae2bb665 | 641 | return r; |
b1713d28 | 642 | } |
a381c45a | 643 | |
2d6fcbf6 | 644 | static int _lv_preload(struct logical_volume *lv, unsigned origin_only, int *flush_required) |
0a5e4a14 | 645 | { |
de6c9183 JT |
646 | int r; |
647 | struct dev_manager *dm; | |
37ed70b9 | 648 | |
5f4b2acf AK |
649 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
650 | return_0; | |
651 | ||
2d6fcbf6 | 652 | if (!(r = dev_manager_preload(dm, lv, origin_only, flush_required))) |
6d52fb46 | 653 | stack; |
5f4b2acf AK |
654 | |
655 | dev_manager_destroy(dm); | |
656 | return r; | |
657 | } | |
658 | ||
659 | static int _lv_deactivate(struct logical_volume *lv) | |
660 | { | |
661 | int r; | |
662 | struct dev_manager *dm; | |
663 | ||
664 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) | |
665 | return_0; | |
37ed70b9 | 666 | |
de6c9183 | 667 | if (!(r = dev_manager_deactivate(dm, lv))) |
37ed70b9 | 668 | stack; |
37ed70b9 | 669 | |
de6c9183 JT |
670 | dev_manager_destroy(dm); |
671 | return r; | |
37ed70b9 JT |
672 | } |
673 | ||
2d6fcbf6 | 674 | static int _lv_suspend_lv(struct logical_volume *lv, unsigned origin_only, int lockfs, int flush_required) |
4a624ca0 | 675 | { |
20c5fcf7 AK |
676 | int r; |
677 | struct dev_manager *dm; | |
c2d72fd4 | 678 | |
5f4b2acf AK |
679 | if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) |
680 | return_0; | |
0a5e4a14 | 681 | |
2d6fcbf6 | 682 | if (!(r = dev_manager_suspend(dm, lv, origin_only, lockfs, flush_required))) |
37ed70b9 | 683 | stack; |
0a5e4a14 | 684 | |
20c5fcf7 AK |
685 | dev_manager_destroy(dm); |
686 | return r; | |
6d52fb46 | 687 | } |
4a624ca0 | 688 | |
8c013da4 | 689 | /* |
f75c11ed | 690 | * These two functions return the number of visible LVs in the state, |
8c013da4 AK |
691 | * or -1 on error. |
692 | */ | |
65752052 | 693 | int lvs_in_vg_activated(struct volume_group *vg) |
f047219b | 694 | { |
60f13f01 | 695 | struct lv_list *lvl; |
94b8220f | 696 | int count = 0; |
37ed70b9 | 697 | |
d1d9800e AK |
698 | if (!activation()) |
699 | return 0; | |
700 | ||
2c44337b | 701 | dm_list_iterate_items(lvl, &vg->lvs) { |
59d8429c | 702 | if (lv_is_visible(lvl->lv)) |
ab9663f3 | 703 | count += (_lv_active(vg->cmd, lvl->lv) == 1); |
37ed70b9 JT |
704 | } |
705 | ||
706 | return count; | |
f047219b | 707 | } |
2ba80b43 | 708 | |
08c9ff43 | 709 | int lvs_in_vg_opened(const struct volume_group *vg) |
2ba80b43 | 710 | { |
08c9ff43 | 711 | const struct lv_list *lvl; |
94b8220f | 712 | int count = 0; |
2ba80b43 | 713 | |
d1d9800e AK |
714 | if (!activation()) |
715 | return 0; | |
716 | ||
2c44337b | 717 | dm_list_iterate_items(lvl, &vg->lvs) { |
afd9ba98 | 718 | if (lv_is_visible(lvl->lv)) |
f894b4b1 | 719 | count += (_lv_open_count(vg->cmd, lvl->lv) > 0); |
2ba80b43 JT |
720 | } |
721 | ||
722 | return count; | |
723 | } | |
413cc918 | 724 | |
5ca6698f | 725 | /* |
27ff8813 JEB |
726 | * _lv_is_active |
727 | * @lv: logical volume being queried | |
728 | * @locally: set if active locally (when provided) | |
729 | * @exclusive: set if active exclusively (when provided) | |
730 | * | |
5ca6698f | 731 | * Determine whether an LV is active locally or in a cluster. |
27ff8813 JEB |
732 | * In addition to the return code which indicates whether or |
733 | * not the LV is active somewhere, two other values are set | |
734 | * to yield more information about the status of the activation: | |
735 | * return locally exclusively status | |
736 | * ====== ======= =========== ====== | |
737 | * 0 0 0 not active | |
738 | * 1 0 0 active remotely | |
739 | * 1 0 1 exclusive remotely | |
740 | * 1 1 0 active locally and possibly remotely | |
741 | * 1 1 1 exclusive locally (or local && !cluster) | |
742 | * The VG lock must be held to call this function. | |
743 | * | |
744 | * Returns: 0 or 1 | |
5ca6698f | 745 | */ |
27ff8813 JEB |
746 | static int _lv_is_active(struct logical_volume *lv, |
747 | int *locally, int *exclusive) | |
5ca6698f | 748 | { |
27ff8813 JEB |
749 | int r, l, e; /* remote, local, and exclusive */ |
750 | ||
751 | r = l = e = 0; | |
6ac30c94 | 752 | |
ab9663f3 | 753 | if (_lv_active(lv->vg->cmd, lv)) |
27ff8813 | 754 | l = 1; |
5ca6698f | 755 | |
27ff8813 JEB |
756 | if (!vg_is_clustered(lv->vg)) { |
757 | e = 1; /* exclusive by definition */ | |
758 | goto out; | |
759 | } | |
760 | ||
761 | /* Active locally, and the caller doesn't care about exclusive */ | |
762 | if (l && !exclusive) | |
763 | goto out; | |
5ca6698f | 764 | |
27ff8813 JEB |
765 | if ((r = remote_lock_held(lv->lvid.s, &e)) >= 0) |
766 | goto out; | |
6ac30c94 MB |
767 | |
768 | /* | |
27ff8813 JEB |
769 | * If lock query is not supported (due to interfacing with old |
770 | * code), then we cannot evaluate exclusivity properly. | |
771 | * | |
772 | * Old users of this function will never be affected by this, | |
773 | * since they are only concerned about active vs. not active. | |
774 | * New users of this function who specifically ask for 'exclusive' | |
775 | * will be given an error message. | |
6ac30c94 | 776 | */ |
27ff8813 JEB |
777 | if (l) { |
778 | if (exclusive) | |
779 | log_error("Unable to determine exclusivity of %s", | |
780 | lv->name); | |
781 | goto out; | |
782 | } | |
783 | ||
6ac30c94 | 784 | if (activate_lv_excl(lv->vg->cmd, lv)) { |
56b3d204 MS |
785 | if (!deactivate_lv(lv->vg->cmd, lv)) |
786 | stack; | |
25a2e7b8 | 787 | return 0; |
6ac30c94 MB |
788 | } |
789 | ||
27ff8813 JEB |
790 | out: |
791 | if (locally) | |
792 | *locally = l; | |
793 | if (exclusive) | |
794 | *exclusive = e; | |
795 | ||
796 | log_very_verbose("%s/%s is %sactive%s%s", | |
797 | lv->vg->name, lv->name, | |
798 | (r || l) ? "" : "not ", | |
799 | (exclusive && e) ? " exclusive" : "", | |
800 | e ? (l ? " locally" : " remotely") : ""); | |
801 | ||
802 | return r || l; | |
803 | } | |
804 | ||
805 | int lv_is_active(struct logical_volume *lv) | |
806 | { | |
807 | return _lv_is_active(lv, NULL, NULL); | |
808 | } | |
809 | ||
810 | /* | |
811 | int lv_is_active_locally(struct logical_volume *lv) | |
812 | { | |
813 | int l; | |
814 | return _lv_is_active(lv, &l, NULL) && l; | |
815 | } | |
816 | */ | |
817 | ||
818 | int lv_is_active_exclusive_locally(struct logical_volume *lv) | |
819 | { | |
820 | int l, e; | |
821 | return _lv_is_active(lv, &l, &e) && l && e; | |
822 | } | |
823 | ||
824 | int lv_is_active_exclusive_remotely(struct logical_volume *lv) | |
825 | { | |
826 | int l, e; | |
827 | return _lv_is_active(lv, &l, &e) && !l && e; | |
5ca6698f DW |
828 | } |
829 | ||
d1e8046f AK |
830 | #ifdef DMEVENTD |
831 | static struct dm_event_handler *_create_dm_event_handler(struct cmd_context *cmd, const char *dmuuid, const char *dso, | |
832 | const int timeout, enum dm_event_mask mask) | |
833 | { | |
834 | struct dm_event_handler *dmevh; | |
835 | ||
836 | if (!(dmevh = dm_event_handler_create())) | |
837 | return_NULL; | |
838 | ||
839 | if (dm_event_handler_set_dmeventd_path(dmevh, find_config_tree_str(cmd, "dmeventd/executable", NULL))) | |
840 | goto_bad; | |
841 | ||
842 | if (dm_event_handler_set_dso(dmevh, dso)) | |
843 | goto_bad; | |
844 | ||
845 | if (dm_event_handler_set_uuid(dmevh, dmuuid)) | |
846 | goto_bad; | |
847 | ||
848 | dm_event_handler_set_timeout(dmevh, timeout); | |
849 | dm_event_handler_set_event_mask(dmevh, mask); | |
850 | ||
851 | return dmevh; | |
852 | ||
853 | bad: | |
854 | dm_event_handler_destroy(dmevh); | |
855 | return NULL; | |
856 | } | |
857 | ||
858 | char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath) | |
859 | { | |
860 | char *path; | |
861 | ||
862 | if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) { | |
863 | log_error("Failed to allocate dmeventd library path."); | |
864 | return NULL; | |
865 | } | |
866 | ||
867 | get_shared_library_path(cmd, libpath, path, PATH_MAX); | |
868 | ||
869 | return path; | |
870 | } | |
871 | ||
f92b4f94 AK |
872 | int target_registered_with_dmeventd(struct cmd_context *cmd, const char *dso, |
873 | struct logical_volume *lv, int *pending) | |
d1e8046f AK |
874 | { |
875 | char *uuid; | |
876 | enum dm_event_mask evmask = 0; | |
877 | struct dm_event_handler *dmevh; | |
878 | ||
879 | *pending = 0; | |
880 | ||
881 | if (!dso) | |
882 | return_0; | |
883 | ||
f92b4f94 AK |
884 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
885 | if (!(uuid = build_dm_uuid(cmd->mem, lv->lvid.s, lv_is_origin(lv) ? "real" : NULL))) | |
d1e8046f AK |
886 | return_0; |
887 | ||
888 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, 0, DM_EVENT_ALL_ERRORS))) | |
889 | return_0; | |
890 | ||
891 | if (dm_event_get_registered_device(dmevh, 0)) { | |
892 | dm_event_handler_destroy(dmevh); | |
893 | return 0; | |
894 | } | |
895 | ||
896 | evmask = dm_event_handler_get_event_mask(dmevh); | |
897 | if (evmask & DM_EVENT_REGISTRATION_PENDING) { | |
898 | *pending = 1; | |
899 | evmask &= ~DM_EVENT_REGISTRATION_PENDING; | |
900 | } | |
901 | ||
902 | dm_event_handler_destroy(dmevh); | |
903 | ||
904 | return evmask; | |
905 | } | |
906 | ||
f92b4f94 | 907 | int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv, |
d1e8046f AK |
908 | int evmask __attribute__((unused)), int set, int timeout) |
909 | { | |
910 | char *uuid; | |
911 | struct dm_event_handler *dmevh; | |
912 | int r; | |
913 | ||
914 | if (!dso) | |
915 | return_0; | |
916 | ||
f92b4f94 AK |
917 | /* We always monitor the "real" device, never the "snapshot-origin" itself. */ |
918 | if (!(uuid = build_dm_uuid(cmd->mem, lv->lvid.s, lv_is_origin(lv) ? "real" : NULL))) | |
d1e8046f AK |
919 | return_0; |
920 | ||
921 | if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, timeout, | |
922 | DM_EVENT_ALL_ERRORS | (timeout ? DM_EVENT_TIMEOUT : 0)))) | |
923 | return_0; | |
924 | ||
925 | r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh); | |
926 | ||
927 | dm_event_handler_destroy(dmevh); | |
928 | ||
929 | if (!r) | |
930 | return_0; | |
931 | ||
932 | log_info("%s %s for events", set ? "Monitored" : "Unmonitored", uuid); | |
933 | ||
934 | return 1; | |
935 | } | |
936 | ||
937 | #endif | |
938 | ||
3e3d5d85 | 939 | /* |
8a37910d AK |
940 | * Returns 0 if an attempt to (un)monitor the device failed. |
941 | * Returns 1 otherwise. | |
3e3d5d85 | 942 | */ |
2d6fcbf6 AK |
943 | int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv, |
944 | unsigned origin_only, int monitor) | |
15d91f5a | 945 | { |
ed09d7e3 | 946 | #ifdef DMEVENTD |
8a37910d AK |
947 | int i, pending = 0, monitored; |
948 | int r = 1; | |
2c44337b | 949 | struct dm_list *tmp, *snh, *snht; |
15d91f5a | 950 | struct lv_segment *seg; |
7a369d37 | 951 | struct lv_segment *log_seg; |
24f4552b | 952 | int (*monitor_fn) (struct lv_segment *s, int e); |
4e9083db | 953 | uint32_t s; |
15d91f5a | 954 | |
20db8ffc AK |
955 | /* skip dmeventd code altogether */ |
956 | if (dmeventd_monitor_mode() == DMEVENTD_MONITOR_IGNORE) | |
957 | return 1; | |
958 | ||
8a37910d AK |
959 | /* |
960 | * Nothing to do if dmeventd configured not to be used. | |
961 | */ | |
962 | if (monitor && !dmeventd_monitor_mode()) | |
3e3d5d85 AK |
963 | return 1; |
964 | ||
67961c7c PR |
965 | /* |
966 | * In case of a snapshot device, we monitor lv->snapshot->lv, | |
967 | * not the actual LV itself. | |
968 | */ | |
c79b4251 | 969 | if (lv_is_cow(lv) && !lv_is_merging_cow(lv)) |
2d6fcbf6 | 970 | return monitor_dev_for_events(cmd, lv->snapshot->lv, 0, monitor); |
67961c7c PR |
971 | |
972 | /* | |
973 | * In case this LV is a snapshot origin, we instead monitor | |
f92b4f94 AK |
974 | * each of its respective snapshots. The origin itself may |
975 | * also need to be monitored if it is a mirror, for example. | |
67961c7c | 976 | */ |
2d6fcbf6 | 977 | if (!origin_only && lv_is_origin(lv)) |
2c44337b AK |
978 | dm_list_iterate_safe(snh, snht, &lv->snapshot_segs) |
979 | if (!monitor_dev_for_events(cmd, dm_list_struct_base(snh, | |
2d6fcbf6 | 980 | struct lv_segment, origin_list)->cow, 0, monitor)) |
0c06de63 | 981 | r = 0; |
67961c7c | 982 | |
7a369d37 JEB |
983 | /* |
984 | * If the volume is mirrored and its log is also mirrored, monitor | |
985 | * the log volume as well. | |
986 | */ | |
987 | if ((seg = first_seg(lv)) != NULL && seg->log_lv != NULL && | |
988 | (log_seg = first_seg(seg->log_lv)) != NULL && | |
989 | seg_is_mirrored(log_seg)) | |
2d6fcbf6 | 990 | if (!monitor_dev_for_events(cmd, seg->log_lv, 0, monitor)) |
7a369d37 JEB |
991 | r = 0; |
992 | ||
2c44337b AK |
993 | dm_list_iterate(tmp, &lv->segments) { |
994 | seg = dm_list_item(tmp, struct lv_segment); | |
15d91f5a | 995 | |
4e9083db AK |
996 | /* Recurse for AREA_LV */ |
997 | for (s = 0; s < seg->area_count; s++) { | |
998 | if (seg_type(seg, s) != AREA_LV) | |
999 | continue; | |
2d6fcbf6 | 1000 | if (!monitor_dev_for_events(cmd, seg_lv(seg, s), 0, |
4e9083db AK |
1001 | monitor)) { |
1002 | log_error("Failed to %smonitor %s", | |
1003 | monitor ? "" : "un", | |
1004 | seg_lv(seg, s)->name); | |
1005 | r = 0; | |
1006 | } | |
1007 | } | |
1008 | ||
8ef6eb30 AK |
1009 | if (!seg_monitored(seg) || (seg->status & PVMOVE)) |
1010 | continue; | |
8a37910d AK |
1011 | |
1012 | monitor_fn = NULL; | |
ed09d7e3 | 1013 | |
8ef6eb30 | 1014 | /* Check monitoring status */ |
8a37910d AK |
1015 | if (seg->segtype->ops->target_monitored) |
1016 | monitored = seg->segtype->ops->target_monitored(seg, &pending); | |
8ef6eb30 AK |
1017 | else |
1018 | continue; /* segtype doesn't support registration */ | |
1019 | ||
1020 | /* | |
1021 | * FIXME: We should really try again if pending | |
1022 | */ | |
8a37910d | 1023 | monitored = (pending) ? 0 : monitored; |
8ef6eb30 | 1024 | |
8a37910d AK |
1025 | if (monitor) { |
1026 | if (monitored) | |
8ef6eb30 | 1027 | log_verbose("%s/%s already monitored.", lv->vg->name, lv->name); |
8a37910d AK |
1028 | else if (seg->segtype->ops->target_monitor_events) |
1029 | monitor_fn = seg->segtype->ops->target_monitor_events; | |
8ef6eb30 | 1030 | } else { |
8a37910d | 1031 | if (!monitored) |
8ef6eb30 | 1032 | log_verbose("%s/%s already not monitored.", lv->vg->name, lv->name); |
8a37910d AK |
1033 | else if (seg->segtype->ops->target_unmonitor_events) |
1034 | monitor_fn = seg->segtype->ops->target_unmonitor_events; | |
8ef6eb30 | 1035 | } |
15d91f5a | 1036 | |
8ef6eb30 | 1037 | /* Do [un]monitor */ |
8a37910d | 1038 | if (!monitor_fn) |
3e3d5d85 | 1039 | continue; |
e24e7130 | 1040 | |
85a80e05 AK |
1041 | log_verbose("%sonitoring %s/%s%s", monitor ? "M" : "Not m", lv->vg->name, lv->name, |
1042 | test_mode() ? " [Test mode: skipping this]" : ""); | |
1043 | ||
1044 | /* FIXME Test mode should really continue a bit further. */ | |
1045 | if (test_mode()) | |
1046 | continue; | |
8a37910d | 1047 | |
3e3d5d85 | 1048 | /* FIXME specify events */ |
57fc4cc0 | 1049 | if (!monitor_fn(seg, 0)) { |
8a37910d AK |
1050 | log_error("%s/%s: %s segment monitoring function failed.", |
1051 | lv->vg->name, lv->name, seg->segtype->name); | |
1052 | return 0; | |
e24e7130 | 1053 | } |
3e3d5d85 | 1054 | |
8ef6eb30 AK |
1055 | /* Check [un]monitor results */ |
1056 | /* Try a couple times if pending, but not forever... */ | |
1057 | for (i = 0; i < 10; i++) { | |
1058 | pending = 0; | |
8a37910d | 1059 | monitored = seg->segtype->ops->target_monitored(seg, &pending); |
8ef6eb30 | 1060 | if (pending || |
8a37910d AK |
1061 | (!monitored && monitor) || |
1062 | (monitored && !monitor)) | |
1063 | log_very_verbose("%s/%s %smonitoring still pending: waiting...", | |
1064 | lv->vg->name, lv->name, monitor ? "" : "un"); | |
8ef6eb30 AK |
1065 | else |
1066 | break; | |
1067 | sleep(1); | |
1068 | } | |
1069 | ||
85a80e05 AK |
1070 | if (r) |
1071 | r = (monitored && monitor) || (!monitored && !monitor); | |
15d91f5a | 1072 | } |
e6493477 | 1073 | |
3e3d5d85 AK |
1074 | return r; |
1075 | #else | |
15d91f5a | 1076 | return 1; |
3e3d5d85 | 1077 | #endif |
15d91f5a | 1078 | } |
15d91f5a | 1079 | |
658b5812 | 1080 | static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s, |
2d6fcbf6 | 1081 | unsigned origin_only, int error_if_not_suspended) |
413cc918 | 1082 | { |
095bbca6 | 1083 | struct logical_volume *lv = NULL, *lv_pre = NULL; |
199e490e | 1084 | struct lvinfo info; |
eb91c4ee | 1085 | int r = 0, lockfs = 0, flush_required = 0; |
413cc918 | 1086 | |
d1d9800e AK |
1087 | if (!activation()) |
1088 | return 1; | |
1089 | ||
8b888354 | 1090 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1091 | goto_out; |
8b888354 | 1092 | |
7a593325 | 1093 | /* Use precommitted metadata if present */ |
8b888354 | 1094 | if (!(lv_pre = lv_from_lvid(cmd, lvid_s, 1))) |
095bbca6 | 1095 | goto_out; |
413cc918 | 1096 | |
2d6fcbf6 AK |
1097 | /* Ignore origin_only unless LV is origin in both old and new metadata */ |
1098 | if (!lv_is_origin(lv) || !lv_is_origin(lv_pre)) | |
1099 | origin_only = 0; | |
1100 | ||
20c5fcf7 | 1101 | if (test_mode()) { |
2d6fcbf6 | 1102 | _skip("Suspending %s%s.", lv->name, origin_only ? " origin without snapshots" : ""); |
095bbca6 MB |
1103 | r = 1; |
1104 | goto out; | |
20c5fcf7 AK |
1105 | } |
1106 | ||
2d6fcbf6 | 1107 | if (!lv_info(cmd, lv, origin_only, &info, 0, 0)) |
095bbca6 | 1108 | goto_out; |
41967a02 | 1109 | |
095bbca6 | 1110 | if (!info.exists || info.suspended) { |
63ae0d14 MB |
1111 | if (!error_if_not_suspended) { |
1112 | r = 1; | |
1113 | if (info.suspended) | |
b1bcff74 | 1114 | critical_section_inc(cmd); |
63ae0d14 | 1115 | } |
095bbca6 MB |
1116 | goto out; |
1117 | } | |
914c9723 | 1118 | |
9249fb12 ZK |
1119 | if (!lv_read_replicator_vgs(lv)) |
1120 | goto_out; | |
1121 | ||
c1fdeec9 MB |
1122 | lv_calculate_readahead(lv, NULL); |
1123 | ||
5f4b2acf | 1124 | /* If VG was precommitted, preload devices for the LV */ |
8b888354 | 1125 | if ((lv_pre->vg->status & PRECOMMITTED)) { |
2d6fcbf6 | 1126 | if (!_lv_preload(lv_pre, origin_only, &flush_required)) { |
5f4b2acf | 1127 | /* FIXME Revert preloading */ |
095bbca6 | 1128 | goto_out; |
5f4b2acf AK |
1129 | } |
1130 | } | |
1131 | ||
2d6fcbf6 | 1132 | if (!monitor_dev_for_events(cmd, lv, origin_only, 0)) |
e24e7130 | 1133 | /* FIXME Consider aborting here */ |
ed09d7e3 AK |
1134 | stack; |
1135 | ||
b1bcff74 | 1136 | critical_section_inc(cmd); |
9cd3426d | 1137 | |
2d6fcbf6 AK |
1138 | if (!origin_only && |
1139 | (lv_is_origin(lv_pre) || lv_is_cow(lv_pre))) | |
9cd3426d AK |
1140 | lockfs = 1; |
1141 | ||
2d6fcbf6 | 1142 | if (!_lv_suspend_lv(lv, origin_only, lockfs, flush_required)) { |
b1bcff74 | 1143 | critical_section_dec(cmd); |
095bbca6 | 1144 | goto out; |
914c9723 | 1145 | } |
8c013da4 | 1146 | |
095bbca6 MB |
1147 | r = 1; |
1148 | out: | |
1149 | if (lv_pre) | |
2b82bd79 | 1150 | free_vg(lv_pre->vg); |
9249fb12 ZK |
1151 | if (lv) { |
1152 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1153 | free_vg(lv->vg); |
9249fb12 | 1154 | } |
095bbca6 MB |
1155 | |
1156 | return r; | |
413cc918 AK |
1157 | } |
1158 | ||
658b5812 | 1159 | /* Returns success if the device is not active */ |
2d6fcbf6 | 1160 | int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1161 | { |
2d6fcbf6 | 1162 | return _lv_suspend(cmd, lvid_s, origin_only, 0); |
658b5812 AK |
1163 | } |
1164 | ||
2d6fcbf6 AK |
1165 | /* No longer used */ |
1166 | /*********** | |
658b5812 AK |
1167 | int lv_suspend(struct cmd_context *cmd, const char *lvid_s) |
1168 | { | |
1169 | return _lv_suspend(cmd, lvid_s, 1); | |
1170 | } | |
2d6fcbf6 | 1171 | ***********/ |
658b5812 | 1172 | |
c054e7cc JEB |
1173 | /* |
1174 | * _lv_resume | |
1175 | * @cmd | |
1176 | * @lvid_s | |
1177 | * @origin_only | |
1178 | * @exclusive: This parameter only has an affect in cluster-context. | |
1179 | * It forces local target type to be used (instead of | |
1180 | * cluster-aware type). | |
1181 | * @error_if_not_active | |
1182 | */ | |
658b5812 | 1183 | static int _lv_resume(struct cmd_context *cmd, const char *lvid_s, |
c054e7cc | 1184 | unsigned origin_only, unsigned exclusive, |
658b5812 | 1185 | int error_if_not_active) |
413cc918 AK |
1186 | { |
1187 | struct logical_volume *lv; | |
199e490e | 1188 | struct lvinfo info; |
095bbca6 | 1189 | int r = 0; |
413cc918 | 1190 | |
d1d9800e AK |
1191 | if (!activation()) |
1192 | return 1; | |
1193 | ||
7a593325 | 1194 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
75b37a11 | 1195 | goto_out; |
413cc918 | 1196 | |
2d6fcbf6 AK |
1197 | if (!lv_is_origin(lv)) |
1198 | origin_only = 0; | |
1199 | ||
20c5fcf7 | 1200 | if (test_mode()) { |
2d6fcbf6 | 1201 | _skip("Resuming %s%s.", lv->name, origin_only ? " without snapshots" : ""); |
095bbca6 MB |
1202 | r = 1; |
1203 | goto out; | |
20c5fcf7 AK |
1204 | } |
1205 | ||
2d6fcbf6 | 1206 | if (!lv_info(cmd, lv, origin_only, &info, 0, 0)) |
095bbca6 | 1207 | goto_out; |
41967a02 | 1208 | |
095bbca6 | 1209 | if (!info.exists || !info.suspended) { |
4ec2ae86 ZK |
1210 | if (error_if_not_active) |
1211 | goto_out; | |
1212 | r = 1; | |
1213 | goto out; | |
095bbca6 | 1214 | } |
914c9723 | 1215 | |
c054e7cc JEB |
1216 | /* |
1217 | * When targets are activated exclusively in a cluster, the | |
1218 | * non-clustered target should be used. This only happens | |
1219 | * if ACTIVATE_EXCL is set in lv->status. | |
1220 | */ | |
1221 | if (exclusive) | |
1222 | lv->status |= ACTIVATE_EXCL; | |
1223 | ||
2d6fcbf6 | 1224 | if (!_lv_activate_lv(lv, origin_only)) |
75b37a11 | 1225 | goto_out; |
914c9723 | 1226 | |
b1bcff74 | 1227 | critical_section_dec(cmd); |
413cc918 | 1228 | |
2d6fcbf6 | 1229 | if (!monitor_dev_for_events(cmd, lv, origin_only, 1)) |
ed09d7e3 | 1230 | stack; |
15d91f5a | 1231 | |
095bbca6 MB |
1232 | r = 1; |
1233 | out: | |
1234 | if (lv) | |
2b82bd79 | 1235 | free_vg(lv->vg); |
095bbca6 MB |
1236 | |
1237 | return r; | |
413cc918 AK |
1238 | } |
1239 | ||
658b5812 | 1240 | /* Returns success if the device is not active */ |
c054e7cc JEB |
1241 | int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s, |
1242 | unsigned origin_only, unsigned exclusive) | |
658b5812 | 1243 | { |
c054e7cc | 1244 | return _lv_resume(cmd, lvid_s, origin_only, exclusive, 0); |
658b5812 AK |
1245 | } |
1246 | ||
2d6fcbf6 | 1247 | int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only) |
658b5812 | 1248 | { |
c054e7cc | 1249 | return _lv_resume(cmd, lvid_s, origin_only, 0, 1); |
658b5812 AK |
1250 | } |
1251 | ||
64a95010 AK |
1252 | static int _lv_has_open_snapshots(struct logical_volume *lv) |
1253 | { | |
1254 | struct lv_segment *snap_seg; | |
1255 | struct lvinfo info; | |
1256 | int r = 0; | |
1257 | ||
1258 | dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list) { | |
2d6fcbf6 | 1259 | if (!lv_info(lv->vg->cmd, snap_seg->cow, 0, &info, 1, 0)) { |
64a95010 AK |
1260 | r = 1; |
1261 | continue; | |
1262 | } | |
1263 | ||
1264 | if (info.exists && info.open_count) { | |
1265 | log_error("LV %s/%s has open snapshot %s: " | |
1266 | "not deactivating", lv->vg->name, lv->name, | |
1267 | snap_seg->cow->name); | |
1268 | r = 1; | |
1269 | } | |
1270 | } | |
1271 | ||
1272 | return r; | |
1273 | } | |
1274 | ||
be326a2f | 1275 | int lv_deactivate(struct cmd_context *cmd, const char *lvid_s) |
f4cbeaf0 AK |
1276 | { |
1277 | struct logical_volume *lv; | |
199e490e | 1278 | struct lvinfo info; |
095bbca6 | 1279 | int r = 0; |
f4cbeaf0 | 1280 | |
d1d9800e AK |
1281 | if (!activation()) |
1282 | return 1; | |
1283 | ||
7a593325 | 1284 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1285 | goto out; |
f4cbeaf0 | 1286 | |
20c5fcf7 AK |
1287 | if (test_mode()) { |
1288 | _skip("Deactivating '%s'.", lv->name); | |
095bbca6 MB |
1289 | r = 1; |
1290 | goto out; | |
20c5fcf7 AK |
1291 | } |
1292 | ||
2d6fcbf6 | 1293 | if (!lv_info(cmd, lv, 0, &info, 1, 0)) |
095bbca6 | 1294 | goto_out; |
41967a02 | 1295 | |
095bbca6 MB |
1296 | if (!info.exists) { |
1297 | r = 1; | |
1298 | goto out; | |
1299 | } | |
f4cbeaf0 | 1300 | |
64a95010 AK |
1301 | if (lv_is_visible(lv)) { |
1302 | if (info.open_count) { | |
1303 | log_error("LV %s/%s in use: not deactivating", | |
1304 | lv->vg->name, lv->name); | |
1305 | goto out; | |
1306 | } | |
1307 | if (lv_is_origin(lv) && _lv_has_open_snapshots(lv)) | |
1308 | goto_out; | |
0cf96f33 AK |
1309 | } |
1310 | ||
9249fb12 ZK |
1311 | if (!lv_read_replicator_vgs(lv)) |
1312 | goto_out; | |
1313 | ||
c1fdeec9 MB |
1314 | lv_calculate_readahead(lv, NULL); |
1315 | ||
2d6fcbf6 | 1316 | if (!monitor_dev_for_events(cmd, lv, 0, 0)) |
ed09d7e3 | 1317 | stack; |
15d91f5a | 1318 | |
b1bcff74 | 1319 | critical_section_inc(cmd); |
914c9723 | 1320 | r = _lv_deactivate(lv); |
b1bcff74 | 1321 | critical_section_dec(cmd); |
914c9723 | 1322 | |
401a40d9 | 1323 | if (!lv_info(cmd, lv, 0, &info, 0, 0) || info.exists) |
89a6cdfd | 1324 | r = 0; |
095bbca6 | 1325 | out: |
9249fb12 ZK |
1326 | if (lv) { |
1327 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1328 | free_vg(lv->vg); |
9249fb12 | 1329 | } |
095bbca6 | 1330 | |
914c9723 | 1331 | return r; |
f4cbeaf0 AK |
1332 | } |
1333 | ||
658b5812 AK |
1334 | /* Test if LV passes filter */ |
1335 | int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s, | |
1336 | int *activate_lv) | |
1337 | { | |
1338 | struct logical_volume *lv; | |
095bbca6 | 1339 | int r = 0; |
658b5812 | 1340 | |
095bbca6 MB |
1341 | if (!activation()) { |
1342 | *activate_lv = 1; | |
1343 | return 1; | |
1344 | } | |
658b5812 | 1345 | |
424dd43e | 1346 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1347 | goto out; |
658b5812 AK |
1348 | |
1349 | if (!_passes_activation_filter(cmd, lv)) { | |
f7e3a19f PR |
1350 | log_verbose("Not activating %s/%s since it does not pass " |
1351 | "activation filter.", lv->vg->name, lv->name); | |
658b5812 | 1352 | *activate_lv = 0; |
095bbca6 MB |
1353 | } else |
1354 | *activate_lv = 1; | |
1355 | r = 1; | |
1356 | out: | |
1357 | if (lv) | |
2b82bd79 | 1358 | free_vg(lv->vg); |
658b5812 | 1359 | |
095bbca6 | 1360 | return r; |
658b5812 AK |
1361 | } |
1362 | ||
07d31831 AK |
1363 | static int _lv_activate(struct cmd_context *cmd, const char *lvid_s, |
1364 | int exclusive, int filter) | |
f4cbeaf0 AK |
1365 | { |
1366 | struct logical_volume *lv; | |
199e490e | 1367 | struct lvinfo info; |
095bbca6 | 1368 | int r = 0; |
f4cbeaf0 | 1369 | |
d1d9800e AK |
1370 | if (!activation()) |
1371 | return 1; | |
1372 | ||
424dd43e | 1373 | if (!(lv = lv_from_lvid(cmd, lvid_s, 0))) |
095bbca6 | 1374 | goto out; |
f4cbeaf0 | 1375 | |
658b5812 | 1376 | if (filter && !_passes_activation_filter(cmd, lv)) { |
f7e3a19f PR |
1377 | log_error("Not activating %s/%s since it does not pass " |
1378 | "activation filter.", lv->vg->name, lv->name); | |
095bbca6 | 1379 | goto out; |
de17d760 AK |
1380 | } |
1381 | ||
cda35408 | 1382 | if ((!lv->vg->cmd->partial_activation) && (lv->status & PARTIAL_LV)) { |
8c5bcdab AK |
1383 | log_error("Refusing activation of partial LV %s. Use --partial to override.", |
1384 | lv->name); | |
095bbca6 | 1385 | goto_out; |
8c5bcdab AK |
1386 | } |
1387 | ||
b4048242 PR |
1388 | if (lv_has_unknown_segments(lv)) { |
1389 | log_error("Refusing activation of LV %s containing " | |
1390 | "an unrecognised segment.", lv->name); | |
1391 | goto_out; | |
1392 | } | |
1393 | ||
20c5fcf7 AK |
1394 | if (test_mode()) { |
1395 | _skip("Activating '%s'.", lv->name); | |
095bbca6 MB |
1396 | r = 1; |
1397 | goto out; | |
20c5fcf7 AK |
1398 | } |
1399 | ||
2d6fcbf6 | 1400 | if (!lv_info(cmd, lv, 0, &info, 0, 0)) |
095bbca6 | 1401 | goto_out; |
8c013da4 | 1402 | |
095bbca6 MB |
1403 | if (info.exists && !info.suspended && info.live_table) { |
1404 | r = 1; | |
1405 | goto out; | |
1406 | } | |
f4cbeaf0 | 1407 | |
9249fb12 ZK |
1408 | if (!lv_read_replicator_vgs(lv)) |
1409 | goto_out; | |
1410 | ||
c1fdeec9 MB |
1411 | lv_calculate_readahead(lv, NULL); |
1412 | ||
07d31831 AK |
1413 | if (exclusive) |
1414 | lv->status |= ACTIVATE_EXCL; | |
1415 | ||
b1bcff74 | 1416 | critical_section_inc(cmd); |
2d6fcbf6 | 1417 | if (!(r = _lv_activate_lv(lv, 0))) |
75b37a11 | 1418 | stack; |
b1bcff74 | 1419 | critical_section_dec(cmd); |
914c9723 | 1420 | |
2d6fcbf6 | 1421 | if (r && !monitor_dev_for_events(cmd, lv, 0, 1)) |
ed09d7e3 | 1422 | stack; |
15d91f5a | 1423 | |
095bbca6 | 1424 | out: |
9249fb12 ZK |
1425 | if (lv) { |
1426 | lv_release_replicator_vgs(lv); | |
2b82bd79 | 1427 | free_vg(lv->vg); |
9249fb12 | 1428 | } |
095bbca6 | 1429 | |
914c9723 | 1430 | return r; |
f4cbeaf0 | 1431 | } |
199e490e | 1432 | |
658b5812 | 1433 | /* Activate LV */ |
07d31831 | 1434 | int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1435 | { |
75b37a11 AK |
1436 | if (!_lv_activate(cmd, lvid_s, exclusive, 0)) |
1437 | return_0; | |
1438 | ||
1439 | return 1; | |
658b5812 AK |
1440 | } |
1441 | ||
1442 | /* Activate LV only if it passes filter */ | |
07d31831 | 1443 | int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive) |
658b5812 | 1444 | { |
75b37a11 AK |
1445 | if (!_lv_activate(cmd, lvid_s, exclusive, 1)) |
1446 | return_0; | |
1447 | ||
1448 | return 1; | |
658b5812 AK |
1449 | } |
1450 | ||
f7dd6d84 AK |
1451 | int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv) |
1452 | { | |
f7dd6d84 AK |
1453 | int r = 1; |
1454 | ||
8b076648 | 1455 | if (!lv) { |
2262b320 | 1456 | r = dm_mknodes(NULL); |
8b076648 AK |
1457 | fs_unlock(); |
1458 | return r; | |
1459 | } | |
1460 | ||
ab9663f3 MB |
1461 | if (!activation()) |
1462 | return 1; | |
f7dd6d84 | 1463 | |
ab9663f3 | 1464 | r = dev_manager_mknodes(lv); |
f7dd6d84 AK |
1465 | |
1466 | fs_unlock(); | |
1467 | ||
1468 | return r; | |
1469 | } | |
1470 | ||
352a99b9 AK |
1471 | /* |
1472 | * Does PV use VG somewhere in its construction? | |
1473 | * Returns 1 on failure. | |
1474 | */ | |
898e6f8e | 1475 | int pv_uses_vg(struct physical_volume *pv, |
3e3d5d85 | 1476 | struct volume_group *vg) |
352a99b9 | 1477 | { |
352a99b9 AK |
1478 | if (!activation()) |
1479 | return 0; | |
1480 | ||
1481 | if (!dm_is_dm_major(MAJOR(pv->dev->dev))) | |
1482 | return 0; | |
1483 | ||
898e6f8e | 1484 | return dev_manager_device_uses_vg(pv->dev, vg); |
352a99b9 AK |
1485 | } |
1486 | ||
2293567c AK |
1487 | void activation_release(void) |
1488 | { | |
1489 | dev_manager_release(); | |
1490 | } | |
1491 | ||
914c9723 AK |
1492 | void activation_exit(void) |
1493 | { | |
1494 | dev_manager_exit(); | |
1495 | } | |
199e490e | 1496 | #endif |