]>
Commit | Line | Data |
---|---|---|
58a3c91c FG |
1 | package PVE::AbstractConfig; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | ||
6 | use PVE::Tools qw(lock_file lock_file_full); | |
7 | use PVE::INotify; | |
8 | use PVE::Cluster; | |
9 | use PVE::Storage; | |
10 | ||
14f17b49 DM |
11 | use PVE::ReplicationConfig; |
12 | use PVE::Replication; | |
13 | ||
58a3c91c FG |
14 | my $nodename = PVE::INotify::nodename(); |
15 | ||
16 | # Printable string, currently either "VM" or "CT" | |
17 | sub guest_type { | |
18 | my ($class) = @_; | |
19 | die "abstract method - implement me "; | |
20 | } | |
21 | ||
22 | sub __config_max_unused_disks { | |
23 | my ($class) = @_; | |
24 | ||
25 | die "implement me - abstract method\n"; | |
26 | } | |
27 | ||
28 | # Path to the flock file for this VM/CT | |
29 | sub config_file_lock { | |
30 | my ($class, $vmid) = @_; | |
31 | die "abstract method - implement me"; | |
32 | } | |
33 | ||
34 | # Relative config file path for this VM/CT in CFS | |
35 | sub cfs_config_path { | |
36 | my ($class, $vmid, $node) = @_; | |
37 | die "abstract method - implement me"; | |
38 | } | |
39 | ||
40 | # Absolute config file path for this VM/CT | |
41 | sub config_file { | |
42 | my ($class, $vmid, $node) = @_; | |
43 | ||
44 | my $cfspath = $class->cfs_config_path($vmid, $node); | |
45 | return "/etc/pve/$cfspath"; | |
46 | } | |
47 | ||
48 | # Read and parse config file for this VM/CT | |
49 | sub load_config { | |
50 | my ($class, $vmid, $node) = @_; | |
51 | ||
52 | $node = $nodename if !$node; | |
53 | my $cfspath = $class->cfs_config_path($vmid, $node); | |
54 | ||
55 | my $conf = PVE::Cluster::cfs_read_file($cfspath); | |
56 | die "Configuration file '$cfspath' does not exist\n" | |
57 | if !defined($conf); | |
58 | ||
59 | return $conf; | |
60 | } | |
61 | ||
62 | # Generate and write config file for this VM/CT | |
63 | sub write_config { | |
64 | my ($class, $vmid, $conf) = @_; | |
65 | ||
66 | my $cfspath = $class->cfs_config_path($vmid); | |
67 | ||
68 | PVE::Cluster::cfs_write_file($cfspath, $conf); | |
69 | } | |
70 | ||
71 | # Lock config file using flock, run $code with @param, unlock config file. | |
72 | # $timeout is the maximum time to aquire the flock | |
73 | sub lock_config_full { | |
74 | my ($class, $vmid, $timeout, $code, @param) = @_; | |
75 | ||
76 | my $filename = $class->config_file_lock($vmid); | |
77 | ||
78 | my $res = lock_file($filename, $timeout, $code, @param); | |
79 | ||
80 | die $@ if $@; | |
81 | ||
82 | return $res; | |
83 | } | |
84 | ||
cbbb06a5 TL |
85 | sub create_and_lock_config { |
86 | my ($class, $vmid, $allow_existing) = @_; | |
87 | ||
88 | $class->lock_config_full($vmid, 5, sub { | |
89 | PVE::Cluster::check_vmid_unused($vmid, $allow_existing); | |
90 | ||
91 | my $conf = eval { $class->load_config($vmid) } || {}; | |
92 | $class->check_lock($conf); | |
93 | $conf->{lock} = 'create'; | |
94 | $class->write_config($vmid, $conf); | |
95 | }); | |
96 | } | |
97 | ||
58a3c91c FG |
98 | # Lock config file using flock, run $code with @param, unlock config file. |
99 | # $timeout is the maximum time to aquire the flock | |
100 | # $shared eq 1 creates a non-exclusive ("read") flock | |
101 | sub lock_config_mode { | |
102 | my ($class, $vmid, $timeout, $shared, $code, @param) = @_; | |
103 | ||
104 | my $filename = $class->config_file_lock($vmid); | |
105 | ||
106 | my $res = lock_file_full($filename, $timeout, $shared, $code, @param); | |
107 | ||
108 | die $@ if $@; | |
109 | ||
110 | return $res; | |
111 | } | |
112 | ||
113 | # Lock config file using flock, run $code with @param, unlock config file. | |
114 | sub lock_config { | |
115 | my ($class, $vmid, $code, @param) = @_; | |
116 | ||
117 | return $class->lock_config_full($vmid, 10, $code, @param); | |
118 | } | |
119 | ||
120 | # Checks whether the config is locked with the lock parameter | |
121 | sub check_lock { | |
122 | my ($class, $conf) = @_; | |
123 | ||
124 | die $class->guest_type()." is locked ($conf->{lock})\n" if $conf->{lock}; | |
125 | } | |
126 | ||
127 | # Returns whether the config is locked with the lock parameter, also checks | |
128 | # whether the lock value is correct if the optional $lock is set. | |
129 | sub has_lock { | |
130 | my ($class, $conf, $lock) = @_; | |
131 | ||
132 | return $conf->{lock} && (!defined($lock) || $lock eq $conf->{lock}); | |
133 | } | |
134 | ||
135 | # Sets the lock parameter for this VM/CT's config to $lock. | |
136 | sub set_lock { | |
137 | my ($class, $vmid, $lock) = @_; | |
138 | ||
139 | my $conf; | |
140 | $class->lock_config($vmid, sub { | |
141 | $conf = $class->load_config($vmid); | |
142 | $class->check_lock($conf); | |
143 | $conf->{lock} = $lock; | |
144 | $class->write_config($vmid, $conf); | |
145 | }); | |
146 | return $conf; | |
147 | } | |
148 | ||
149 | # Removes the lock parameter for this VM/CT's config, also checks whether | |
150 | # the lock value is correct if the optional $lock is set. | |
151 | sub remove_lock { | |
152 | my ($class, $vmid, $lock) = @_; | |
153 | ||
154 | $class->lock_config($vmid, sub { | |
155 | my $conf = $class->load_config($vmid); | |
156 | if (!$conf->{lock}) { | |
157 | my $lockstring = defined($lock) ? "'$lock' " : "any"; | |
158 | die "no lock found trying to remove $lockstring lock\n"; | |
159 | } elsif (defined($lock) && $conf->{lock} ne $lock) { | |
160 | die "found lock '$conf->{lock}' trying to remove '$lock' lock\n"; | |
161 | } | |
162 | delete $conf->{lock}; | |
163 | $class->write_config($vmid, $conf); | |
164 | }); | |
165 | } | |
166 | ||
167 | # Checks whether protection mode is enabled for this VM/CT. | |
168 | sub check_protection { | |
169 | my ($class, $conf, $err_msg) = @_; | |
170 | ||
171 | if ($conf->{protection}) { | |
172 | die "$err_msg - protection mode enabled\n"; | |
173 | } | |
174 | } | |
175 | ||
176 | # Adds an unused volume to $config, if possible. | |
177 | sub add_unused_volume { | |
178 | my ($class, $config, $volid) = @_; | |
179 | ||
180 | my $key; | |
181 | for (my $ind = $class->__config_max_unused_disks() - 1; $ind >= 0; $ind--) { | |
182 | my $test = "unused$ind"; | |
183 | if (my $vid = $config->{$test}) { | |
184 | return if $vid eq $volid; # do not add duplicates | |
185 | } else { | |
186 | $key = $test; | |
187 | } | |
188 | } | |
189 | ||
190 | die "Too many unused volumes - please delete them first.\n" if !$key; | |
191 | ||
192 | $config->{$key} = $volid; | |
193 | ||
194 | return $key; | |
195 | } | |
196 | ||
197 | # Returns whether the template parameter is set in $conf. | |
198 | sub is_template { | |
199 | my ($class, $conf) = @_; | |
200 | ||
201 | return 1 if defined $conf->{template} && $conf->{template} == 1; | |
202 | } | |
203 | ||
204 | # Checks whether $feature is availabe for the referenced volumes in $conf. | |
205 | # Note: depending on the parameters, some volumes may be skipped! | |
206 | sub has_feature { | |
207 | my ($class, $feature, $conf, $storecfg, $snapname, $running, $backup_only) = @_; | |
208 | die "implement me - abstract method\n"; | |
209 | } | |
210 | ||
3f85b14d DM |
211 | # get all replicatable volume (hash $res->{$volid} = 1) |
212 | # $cleanup: for cleanup - simply ignores volumes without replicate feature | |
213 | # $norerr: never raise exceptions - return undef instead | |
214 | sub get_replicatable_volumes { | |
54b79ff5 | 215 | my ($class, $storecfg, $vmid, $conf, $cleanup, $noerr) = @_; |
3f85b14d DM |
216 | |
217 | die "implement me - abstract method\n"; | |
218 | } | |
219 | ||
58a3c91c FG |
220 | # Internal snapshots |
221 | ||
222 | # NOTE: Snapshot create/delete involves several non-atomic | |
223 | # actions, and can take a long time. | |
224 | # So we try to avoid locking the file and use the 'lock' variable | |
225 | # inside the config file instead. | |
226 | ||
227 | # Save the vmstate (RAM). | |
228 | sub __snapshot_save_vmstate { | |
229 | my ($class, $vmid, $conf, $snapname, $storecfg) = @_; | |
230 | die "implement me - abstract method\n"; | |
231 | } | |
232 | ||
233 | # Check whether the VM/CT is running. | |
234 | sub __snapshot_check_running { | |
235 | my ($class, $vmid) = @_; | |
236 | die "implement me - abstract method\n"; | |
237 | } | |
238 | ||
239 | # Check whether we need to freeze the VM/CT | |
240 | sub __snapshot_check_freeze_needed { | |
241 | my ($sself, $vmid, $config, $save_vmstate) = @_; | |
242 | die "implement me - abstract method\n"; | |
243 | } | |
244 | ||
245 | # Freeze or unfreeze the VM/CT. | |
246 | sub __snapshot_freeze { | |
247 | my ($class, $vmid, $unfreeze) = @_; | |
248 | ||
249 | die "abstract method - implement me\n"; | |
250 | } | |
251 | ||
252 | # Code run before and after creating all the volume snapshots | |
253 | # base: noop | |
254 | sub __snapshot_create_vol_snapshots_hook { | |
255 | my ($class, $vmid, $snap, $running, $hook) = @_; | |
256 | ||
257 | return; | |
258 | } | |
259 | ||
260 | # Create the volume snapshots for the VM/CT. | |
261 | sub __snapshot_create_vol_snapshot { | |
262 | my ($class, $vmid, $vs, $volume, $snapname) = @_; | |
263 | ||
264 | die "abstract method - implement me\n"; | |
265 | } | |
266 | ||
267 | # Remove a drive from the snapshot config. | |
268 | sub __snapshot_delete_remove_drive { | |
269 | my ($class, $snap, $drive) = @_; | |
270 | ||
271 | die "abstract method - implement me\n"; | |
272 | } | |
273 | ||
274 | # Delete the vmstate file/drive | |
275 | sub __snapshot_delete_vmstate_file { | |
276 | my ($class, $snap, $force) = @_; | |
277 | ||
278 | die "abstract method - implement me\n"; | |
279 | } | |
280 | ||
281 | # Delete a volume snapshot | |
282 | sub __snapshot_delete_vol_snapshot { | |
283 | my ($class, $vmid, $vs, $volume, $snapname) = @_; | |
284 | ||
285 | die "abstract method - implement me\n"; | |
286 | } | |
287 | ||
3fa4ce45 DC |
288 | # called during rollback prepare, and between config rollback and starting guest |
289 | # can change config, e.g. for vmgenid | |
290 | # $data is shared across calls and passed to vm_start | |
291 | sub __snapshot_rollback_hook { | |
292 | my ($class, $vmid, $conf, $snap, $prepare, $data) = @_; | |
293 | ||
294 | return; | |
295 | } | |
296 | ||
58a3c91c FG |
297 | # Checks whether a volume snapshot is possible for this volume. |
298 | sub __snapshot_rollback_vol_possible { | |
299 | my ($class, $volume, $snapname) = @_; | |
300 | ||
301 | die "abstract method - implement me\n"; | |
302 | } | |
303 | ||
304 | # Rolls back this volume. | |
305 | sub __snapshot_rollback_vol_rollback { | |
306 | my ($class, $volume, $snapname) = @_; | |
307 | ||
308 | die "abstract method - implement me\n"; | |
309 | } | |
310 | ||
311 | # Stops the VM/CT for a rollback. | |
312 | sub __snapshot_rollback_vm_stop { | |
313 | my ($class, $vmid) = @_; | |
314 | ||
315 | die "abstract method - implement me\n"; | |
316 | } | |
317 | ||
318 | # Start the VM/CT after a rollback with restored vmstate. | |
319 | sub __snapshot_rollback_vm_start { | |
3fa4ce45 | 320 | my ($class, $vmid, $vmstate, $data); |
58a3c91c FG |
321 | |
322 | die "abstract method - implement me\n"; | |
323 | } | |
324 | ||
325 | # Get list of volume IDs which are referenced in $conf, but not in $snap. | |
326 | sub __snapshot_rollback_get_unused { | |
327 | my ($class, $conf, $snap) = @_; | |
328 | ||
329 | die "abstract method - implement me\n"; | |
330 | } | |
331 | ||
332 | # Iterate over all configured volumes, calling $func for each key/value pair. | |
333 | sub __snapshot_foreach_volume { | |
334 | my ($class, $conf, $func) = @_; | |
335 | ||
336 | die "abstract method - implement me\n"; | |
337 | } | |
338 | ||
339 | # Copy the current config $source to the snapshot config $dest | |
340 | sub __snapshot_copy_config { | |
341 | my ($class, $source, $dest) = @_; | |
342 | ||
343 | foreach my $k (keys %$source) { | |
344 | next if $k eq 'snapshots'; | |
345 | next if $k eq 'snapstate'; | |
346 | next if $k eq 'snaptime'; | |
347 | next if $k eq 'vmstate'; | |
348 | next if $k eq 'lock'; | |
349 | next if $k eq 'digest'; | |
350 | next if $k eq 'description'; | |
351 | next if $k =~ m/^unused\d+$/; | |
352 | ||
353 | $dest->{$k} = $source->{$k}; | |
354 | } | |
355 | }; | |
356 | ||
357 | # Apply the snapshot config $snap to the config $conf (rollback) | |
358 | sub __snapshot_apply_config { | |
359 | my ($class, $conf, $snap) = @_; | |
360 | ||
361 | # copy snapshot list | |
362 | my $newconf = { | |
363 | snapshots => $conf->{snapshots}, | |
364 | }; | |
365 | ||
eb74d483 | 366 | # keep description and list of unused disks |
58a3c91c | 367 | foreach my $k (keys %$conf) { |
eb74d483 | 368 | next if !($k =~ m/^unused\d+$/ || $k eq 'description'); |
38532f70 | 369 | |
58a3c91c FG |
370 | $newconf->{$k} = $conf->{$k}; |
371 | } | |
372 | ||
373 | $class->__snapshot_copy_config($snap, $newconf); | |
374 | ||
375 | return $newconf; | |
376 | } | |
377 | ||
378 | # Prepares the configuration for snapshotting. | |
379 | sub __snapshot_prepare { | |
380 | my ($class, $vmid, $snapname, $save_vmstate, $comment) = @_; | |
381 | ||
382 | my $snap; | |
383 | ||
384 | my $updatefn = sub { | |
385 | ||
386 | my $conf = $class->load_config($vmid); | |
387 | ||
388 | die "you can't take a snapshot if it's a template\n" | |
389 | if $class->is_template($conf); | |
390 | ||
391 | $class->check_lock($conf); | |
392 | ||
393 | $conf->{lock} = 'snapshot'; | |
394 | ||
395 | die "snapshot name '$snapname' already used\n" | |
396 | if defined($conf->{snapshots}->{$snapname}); | |
397 | ||
398 | my $storecfg = PVE::Storage::config(); | |
399 | die "snapshot feature is not available\n" | |
400 | if !$class->has_feature('snapshot', $conf, $storecfg, undef, undef, $snapname eq 'vzdump'); | |
401 | ||
402 | $snap = $conf->{snapshots}->{$snapname} = {}; | |
403 | ||
404 | if ($save_vmstate && $class->__snapshot_check_running($vmid)) { | |
405 | $class->__snapshot_save_vmstate($vmid, $conf, $snapname, $storecfg); | |
406 | } | |
407 | ||
408 | $class->__snapshot_copy_config($conf, $snap); | |
409 | ||
410 | $snap->{snapstate} = "prepare"; | |
411 | $snap->{snaptime} = time(); | |
412 | $snap->{description} = $comment if $comment; | |
413 | ||
414 | $class->write_config($vmid, $conf); | |
415 | }; | |
416 | ||
417 | $class->lock_config($vmid, $updatefn); | |
418 | ||
419 | return $snap; | |
420 | } | |
421 | ||
422 | # Commits the configuration after snapshotting. | |
423 | sub __snapshot_commit { | |
424 | my ($class, $vmid, $snapname) = @_; | |
425 | ||
426 | my $updatefn = sub { | |
427 | ||
428 | my $conf = $class->load_config($vmid); | |
429 | ||
430 | die "missing snapshot lock\n" | |
431 | if !($conf->{lock} && $conf->{lock} eq 'snapshot'); | |
432 | ||
433 | my $snap = $conf->{snapshots}->{$snapname}; | |
434 | die "snapshot '$snapname' does not exist\n" if !defined($snap); | |
435 | ||
436 | die "wrong snapshot state\n" | |
437 | if !($snap->{snapstate} && $snap->{snapstate} eq "prepare"); | |
438 | ||
439 | delete $snap->{snapstate}; | |
440 | delete $conf->{lock}; | |
441 | ||
442 | $conf->{parent} = $snapname; | |
443 | ||
444 | $class->write_config($vmid, $conf); | |
445 | }; | |
446 | ||
447 | $class->lock_config($vmid, $updatefn); | |
448 | } | |
449 | ||
450 | # Creates a snapshot for the VM/CT. | |
451 | sub snapshot_create { | |
452 | my ($class, $vmid, $snapname, $save_vmstate, $comment) = @_; | |
453 | ||
454 | my $snap = $class->__snapshot_prepare($vmid, $snapname, $save_vmstate, $comment); | |
455 | ||
456 | $save_vmstate = 0 if !$snap->{vmstate}; | |
457 | ||
458 | my $conf = $class->load_config($vmid); | |
459 | ||
460 | my ($running, $freezefs) = $class->__snapshot_check_freeze_needed($vmid, $conf, $snap->{vmstate}); | |
461 | ||
462 | my $drivehash = {}; | |
463 | ||
464 | eval { | |
465 | if ($freezefs) { | |
466 | $class->__snapshot_freeze($vmid, 0); | |
467 | } | |
468 | ||
469 | $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, "before"); | |
470 | ||
471 | $class->__snapshot_foreach_volume($snap, sub { | |
472 | my ($vs, $volume) = @_; | |
473 | ||
474 | $class->__snapshot_create_vol_snapshot($vmid, $vs, $volume, $snapname); | |
475 | $drivehash->{$vs} = 1; | |
476 | }); | |
477 | }; | |
478 | my $err = $@; | |
479 | ||
480 | if ($running) { | |
481 | $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, "after"); | |
482 | if ($freezefs) { | |
483 | $class->__snapshot_freeze($vmid, 1); | |
484 | } | |
485 | $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, "after-unfreeze"); | |
486 | } | |
487 | ||
488 | if ($err) { | |
489 | warn "snapshot create failed: starting cleanup\n"; | |
490 | eval { $class->snapshot_delete($vmid, $snapname, 1, $drivehash); }; | |
491 | warn "$@" if $@; | |
492 | die "$err\n"; | |
493 | } | |
494 | ||
495 | $class->__snapshot_commit($vmid, $snapname); | |
496 | } | |
497 | ||
498 | # Deletes a snapshot. | |
499 | # Note: $drivehash is only set when called from snapshot_create. | |
500 | sub snapshot_delete { | |
501 | my ($class, $vmid, $snapname, $force, $drivehash) = @_; | |
502 | ||
503 | my $prepare = 1; | |
504 | ||
58a3c91c FG |
505 | my $unused = []; |
506 | ||
4c3144ea AA |
507 | my $conf = $class->load_config($vmid); |
508 | my $snap = $conf->{snapshots}->{$snapname}; | |
509 | ||
510 | die "snapshot '$snapname' does not exist\n" if !defined($snap); | |
511 | ||
58a3c91c FG |
512 | $class->set_lock($vmid, 'snapshot-delete') |
513 | if (!$drivehash); # doesn't already have a 'snapshot' lock | |
514 | ||
515 | my $unlink_parent = sub { | |
516 | my ($confref, $new_parent) = @_; | |
517 | ||
518 | if ($confref->{parent} && $confref->{parent} eq $snapname) { | |
519 | if ($new_parent) { | |
520 | $confref->{parent} = $new_parent; | |
521 | } else { | |
522 | delete $confref->{parent}; | |
523 | } | |
524 | } | |
525 | }; | |
526 | ||
527 | my $remove_drive = sub { | |
528 | my ($drive) = @_; | |
529 | ||
530 | my $conf = $class->load_config($vmid); | |
531 | $snap = $conf->{snapshots}->{$snapname}; | |
532 | die "snapshot '$snapname' does not exist\n" if !defined($snap); | |
533 | ||
534 | $class->__snapshot_delete_remove_drive($snap, $drive); | |
535 | ||
536 | $class->write_config($vmid, $conf); | |
537 | }; | |
538 | ||
539 | #prepare | |
540 | $class->lock_config($vmid, sub { | |
541 | my $conf = $class->load_config($vmid); | |
542 | ||
543 | die "you can't delete a snapshot if vm is a template\n" | |
544 | if $class->is_template($conf); | |
545 | ||
546 | $snap = $conf->{snapshots}->{$snapname}; | |
547 | die "snapshot '$snapname' does not exist\n" if !defined($snap); | |
548 | ||
549 | $snap->{snapstate} = 'delete'; | |
550 | ||
551 | $class->write_config($vmid, $conf); | |
552 | }); | |
553 | ||
554 | # now remove vmstate file | |
555 | if ($snap->{vmstate}) { | |
556 | $class->__snapshot_delete_vmstate_file($snap, $force); | |
557 | ||
558 | # save changes (remove vmstate from snapshot) | |
559 | $class->lock_config($vmid, $remove_drive, 'vmstate') if !$force; | |
560 | }; | |
561 | ||
562 | # now remove all volume snapshots | |
563 | $class->__snapshot_foreach_volume($snap, sub { | |
564 | my ($vs, $volume) = @_; | |
565 | ||
566 | return if $snapname eq 'vzdump' && $vs ne 'rootfs' && !$volume->{backup}; | |
567 | if (!$drivehash || $drivehash->{$vs}) { | |
568 | eval { $class->__snapshot_delete_vol_snapshot($vmid, $vs, $volume, $snapname, $unused); }; | |
569 | if (my $err = $@) { | |
570 | die $err if !$force; | |
571 | warn $err; | |
572 | } | |
573 | } | |
574 | ||
575 | # save changes (remove drive from snapshot) | |
576 | $class->lock_config($vmid, $remove_drive, $vs) if !$force; | |
577 | }); | |
578 | ||
579 | # now cleanup config | |
580 | $class->lock_config($vmid, sub { | |
581 | my $conf = $class->load_config($vmid); | |
582 | $snap = $conf->{snapshots}->{$snapname}; | |
583 | die "snapshot '$snapname' does not exist\n" if !defined($snap); | |
584 | ||
585 | # remove parent refs | |
586 | &$unlink_parent($conf, $snap->{parent}); | |
587 | foreach my $sn (keys %{$conf->{snapshots}}) { | |
588 | next if $sn eq $snapname; | |
589 | &$unlink_parent($conf->{snapshots}->{$sn}, $snap->{parent}); | |
590 | } | |
591 | ||
592 | ||
593 | delete $conf->{snapshots}->{$snapname}; | |
594 | delete $conf->{lock}; | |
595 | foreach my $volid (@$unused) { | |
596 | $class->add_unused_volume($conf, $volid); | |
597 | } | |
598 | ||
599 | $class->write_config($vmid, $conf); | |
600 | }); | |
601 | } | |
602 | ||
603 | # Rolls back to a given snapshot. | |
604 | sub snapshot_rollback { | |
605 | my ($class, $vmid, $snapname) = @_; | |
606 | ||
607 | my $prepare = 1; | |
608 | ||
609 | my $storecfg = PVE::Storage::config(); | |
610 | ||
611 | my $conf = $class->load_config($vmid); | |
612 | ||
613 | my $get_snapshot_config = sub { | |
614 | ||
615 | die "you can't rollback if vm is a template\n" if $class->is_template($conf); | |
616 | ||
617 | my $res = $conf->{snapshots}->{$snapname}; | |
618 | ||
619 | die "snapshot '$snapname' does not exist\n" if !defined($res); | |
620 | ||
621 | return $res; | |
622 | }; | |
623 | ||
683a30e0 WL |
624 | my $repl_conf = PVE::ReplicationConfig->new(); |
625 | if ($repl_conf->check_for_existing_jobs($vmid, 1)) { | |
626 | # remove all replication snapshots | |
c324e907 | 627 | my $volumes = $class->get_replicatable_volumes($storecfg, $vmid, $conf, 1); |
683a30e0 WL |
628 | my $sorted_volids = [ sort keys %$volumes ]; |
629 | ||
630 | # remove all local replication snapshots (jobid => undef) | |
631 | my $logfunc = sub { my $line = shift; chomp $line; print "$line\n"; }; | |
632 | PVE::Replication::prepare($storecfg, $sorted_volids, undef, 0, undef, $logfunc); | |
633 | } | |
634 | ||
58a3c91c FG |
635 | my $snap = &$get_snapshot_config(); |
636 | ||
637 | $class->__snapshot_foreach_volume($snap, sub { | |
638 | my ($vs, $volume) = @_; | |
639 | ||
640 | $class->__snapshot_rollback_vol_possible($volume, $snapname); | |
641 | }); | |
642 | ||
3fa4ce45 DC |
643 | my $data = {}; |
644 | ||
58a3c91c FG |
645 | my $updatefn = sub { |
646 | ||
647 | $conf = $class->load_config($vmid); | |
648 | ||
649 | $snap = &$get_snapshot_config(); | |
650 | ||
651 | die "unable to rollback to incomplete snapshot (snapstate = $snap->{snapstate})\n" | |
652 | if $snap->{snapstate}; | |
653 | ||
654 | if ($prepare) { | |
655 | $class->check_lock($conf); | |
656 | $class->__snapshot_rollback_vm_stop($vmid); | |
657 | } | |
658 | ||
659 | die "unable to rollback vm $vmid: vm is running\n" | |
660 | if $class->__snapshot_check_running($vmid); | |
661 | ||
662 | if ($prepare) { | |
663 | $conf->{lock} = 'rollback'; | |
664 | } else { | |
665 | die "got wrong lock\n" if !($conf->{lock} && $conf->{lock} eq 'rollback'); | |
666 | delete $conf->{lock}; | |
58a3c91c | 667 | |
58a3c91c FG |
668 | my $unused = $class->__snapshot_rollback_get_unused($conf, $snap); |
669 | ||
670 | foreach my $volid (@$unused) { | |
671 | $class->add_unused_volume($conf, $volid); | |
672 | } | |
673 | ||
58a3c91c FG |
674 | # copy snapshot config to current config |
675 | $conf = $class->__snapshot_apply_config($conf, $snap); | |
676 | $conf->{parent} = $snapname; | |
58a3c91c FG |
677 | } |
678 | ||
3fa4ce45 DC |
679 | $class->__snapshot_rollback_hook($vmid, $conf, $snap, $prepare, $data); |
680 | ||
58a3c91c FG |
681 | $class->write_config($vmid, $conf); |
682 | ||
683 | if (!$prepare && $snap->{vmstate}) { | |
3fa4ce45 | 684 | $class->__snapshot_rollback_vm_start($vmid, $snap->{vmstate}, $data); |
58a3c91c FG |
685 | } |
686 | }; | |
687 | ||
688 | $class->lock_config($vmid, $updatefn); | |
689 | ||
690 | $class->__snapshot_foreach_volume($snap, sub { | |
691 | my ($vs, $volume) = @_; | |
692 | ||
693 | $class->__snapshot_rollback_vol_rollback($volume, $snapname); | |
694 | }); | |
695 | ||
696 | $prepare = 0; | |
697 | $class->lock_config($vmid, $updatefn); | |
698 | } | |
699 | ||
eb50bb61 RV |
700 | # bash completion helper |
701 | ||
90fba9cd WB |
702 | sub snapshot_list { |
703 | my ($class, $vmid) = @_; | |
eb50bb61 | 704 | |
90fba9cd WB |
705 | my $snapshot = eval { |
706 | my $conf = $class->load_config($vmid); | |
707 | my $snapshots = $conf->{snapshots} || []; | |
708 | [ sort keys %$snapshots ] | |
709 | } || []; | |
eb50bb61 RV |
710 | |
711 | return $snapshot; | |
712 | } | |
713 | ||
58a3c91c | 714 | 1; |