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53c25521 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 | ||
9 | my $nodename = PVE::INotify::nodename(); | |
10 | ||
11 | # Printable string, currently either "VM" or "CT" | |
12 | sub guest_type { | |
13 | my ($class) = @_; | |
14 | die "abstract method - implement me "; | |
15 | } | |
16 | ||
17 | sub __config_max_unused_disks { | |
18 | my ($class) = @_; | |
19 | ||
20 | die "implement me - abstract method\n"; | |
21 | } | |
22 | ||
23 | # Path to the flock file for this VM/CT | |
24 | sub config_file_lock { | |
25 | my ($class, $vmid) = @_; | |
26 | die "abstract method - implement me"; | |
27 | } | |
28 | ||
29 | # Relative config file path for this VM/CT in CFS | |
30 | sub cfs_config_path { | |
31 | my ($class, $vmid, $node) = @_; | |
32 | die "abstract method - implement me"; | |
33 | } | |
34 | ||
35 | # Absolute config file path for this VM/CT | |
36 | sub config_file { | |
37 | my ($class, $vmid, $node) = @_; | |
38 | ||
39 | my $cfspath = $class->cfs_config_path($vmid, $node); | |
40 | return "/etc/pve/$cfspath"; | |
41 | } | |
42 | ||
43 | # Read and parse config file for this VM/CT | |
44 | sub load_config { | |
45 | my ($class, $vmid, $node) = @_; | |
46 | ||
47 | $node = $nodename if !$node; | |
48 | my $cfspath = $class->cfs_config_path($vmid, $node); | |
49 | ||
50 | my $conf = PVE::Cluster::cfs_read_file($cfspath); | |
51 | die "Configuration file '$cfspath' does not exist\n" | |
52 | if !defined($conf); | |
53 | ||
54 | return $conf; | |
55 | } | |
56 | ||
57 | # Generate and write config file for this VM/CT | |
58 | sub write_config { | |
59 | my ($class, $vmid, $conf) = @_; | |
60 | ||
61 | my $cfspath = $class->cfs_config_path($vmid); | |
62 | ||
63 | PVE::Cluster::cfs_write_file($cfspath, $conf); | |
64 | } | |
65 | ||
66 | # Lock config file using flock, run $code with @param, unlock config file. | |
67 | # $timeout is the maximum time to aquire the flock | |
68 | sub lock_config_full { | |
69 | my ($class, $vmid, $timeout, $code, @param) = @_; | |
70 | ||
71 | my $filename = $class->config_file_lock($vmid); | |
72 | ||
73 | my $res = lock_file($filename, $timeout, $code, @param); | |
74 | ||
75 | die $@ if $@; | |
76 | ||
77 | return $res; | |
78 | } | |
79 | ||
80 | # Lock config file using flock, run $code with @param, unlock config file. | |
81 | # $timeout is the maximum time to aquire the flock | |
82 | # $shared eq 1 creates a non-exclusive ("read") flock | |
83 | sub lock_config_mode { | |
84 | my ($class, $vmid, $timeout, $shared, $code, @param) = @_; | |
85 | ||
86 | my $filename = $class->config_file_lock($vmid); | |
87 | ||
88 | my $res = lock_file_full($filename, $timeout, $shared, $code, @param); | |
89 | ||
90 | die $@ if $@; | |
91 | ||
92 | return $res; | |
93 | } | |
94 | ||
95 | # Lock config file using flock, run $code with @param, unlock config file. | |
96 | sub lock_config { | |
97 | my ($class, $vmid, $code, @param) = @_; | |
98 | ||
99 | return $class->lock_config_full($vmid, 10, $code, @param); | |
100 | } | |
101 | ||
102 | # Checks whether the config is locked with the lock parameter | |
103 | sub check_lock { | |
104 | my ($class, $conf) = @_; | |
105 | ||
106 | die $class->guest_type()." is locked ($conf->{lock})\n" if $conf->{lock}; | |
107 | } | |
108 | ||
109 | # Returns whether the config is locked with the lock parameter, also checks | |
110 | # whether the lock value is correct if the optional $lock is set. | |
111 | sub has_lock { | |
112 | my ($class, $conf, $lock) = @_; | |
113 | ||
114 | return $conf->{lock} && (!defined($lock) || $lock eq $conf->{lock}); | |
115 | } | |
116 | ||
117 | # Sets the lock parameter for this VM/CT's config to $lock. | |
118 | sub set_lock { | |
119 | my ($class, $vmid, $lock) = @_; | |
120 | ||
121 | my $conf; | |
122 | $class->lock_config($vmid, sub { | |
123 | $conf = $class->load_config($vmid); | |
124 | $class->check_lock($conf); | |
125 | $conf->{lock} = $lock; | |
126 | $class->write_config($vmid, $conf); | |
127 | }); | |
128 | return $conf; | |
129 | } | |
130 | ||
131 | # Removes the lock parameter for this VM/CT's config, also checks whether | |
132 | # the lock value is correct if the optional $lock is set. | |
133 | sub remove_lock { | |
134 | my ($class, $vmid, $lock) = @_; | |
135 | ||
136 | $class->lock_config($vmid, sub { | |
137 | my $conf = $class->load_config($vmid); | |
138 | if (!$conf->{lock}) { | |
139 | die "no lock found trying to remove lock '$lock'\n"; | |
140 | } elsif (defined($lock) && $conf->{lock} ne $lock) { | |
141 | die "found lock '$conf->{lock}' trying to remove lock '$lock'\n"; | |
142 | } | |
143 | delete $conf->{lock}; | |
144 | $class->write_config($vmid, $conf); | |
145 | }); | |
146 | } | |
147 | ||
148 | # Checks whether protection mode is enabled for this VM/CT. | |
149 | sub check_protection { | |
150 | my ($class, $conf, $err_msg) = @_; | |
151 | ||
152 | if ($conf->{protection}) { | |
153 | die "$err_msg - protection mode enabled\n"; | |
154 | } | |
155 | } | |
156 | ||
157 | # Adds an unused volume to $config, if possible. | |
158 | sub add_unused_volume { | |
159 | my ($class, $config, $volid) = @_; | |
160 | ||
161 | my $key; | |
162 | for (my $ind = $class->__config_max_unused_disks() - 1; $ind >= 0; $ind--) { | |
163 | my $test = "unused$ind"; | |
164 | if (my $vid = $config->{$test}) { | |
165 | return if $vid eq $volid; # do not add duplicates | |
166 | } else { | |
167 | $key = $test; | |
168 | } | |
169 | } | |
170 | ||
171 | die "Too many unused volumes - please delete them first.\n" if !$key; | |
172 | ||
173 | $config->{$key} = $volid; | |
174 | ||
175 | return $key; | |
176 | } | |
177 | ||
178 | # Returns whether the template parameter is set in $conf. | |
179 | sub is_template { | |
180 | my ($class, $conf) = @_; | |
181 | ||
182 | return 1 if defined $conf->{template} && $conf->{template} == 1; | |
183 | } | |
184 | ||
185 | # Checks whether $feature is availabe for the referenced volumes in $conf. | |
186 | # Note: depending on the parameters, some volumes may be skipped! | |
187 | sub has_feature { | |
188 | my ($class, $feature, $conf, $storecfg, $snapname, $running, $backup_only) = @_; | |
189 | die "implement me - abstract method\n"; | |
190 | } | |
191 | ||
192 | # Internal snapshots | |
193 | ||
194 | # NOTE: Snapshot create/delete involves several non-atomic | |
195 | # actions, and can take a long time. | |
196 | # So we try to avoid locking the file and use the 'lock' variable | |
197 | # inside the config file instead. | |
198 | ||
199 | # Save the vmstate (RAM). | |
200 | sub __snapshot_save_vmstate { | |
201 | my ($class, $vmid, $conf, $snapname, $storecfg) = @_; | |
202 | die "implement me - abstract method\n"; | |
203 | } | |
204 | ||
205 | # Check whether the VM/CT is running. | |
206 | sub __snapshot_check_running { | |
207 | my ($class, $vmid) = @_; | |
208 | die "implement me - abstract method\n"; | |
209 | } | |
210 | ||
211 | # Check whether we need to freeze the VM/CT | |
212 | sub __snapshot_check_freeze_needed { | |
213 | my ($sself, $vmid, $config, $save_vmstate) = @_; | |
214 | die "implement me - abstract method\n"; | |
215 | } | |
216 | ||
217 | # Freeze or unfreeze the VM/CT. | |
218 | sub __snapshot_freeze { | |
219 | my ($class, $vmid, $unfreeze) = @_; | |
220 | ||
221 | die "abstract method - implement me\n"; | |
222 | } | |
223 | ||
ba9db5df FG |
224 | # Code run before and after creating all the volume snapshots |
225 | # base: noop | |
226 | sub __snapshot_create_vol_snapshots_hook { | |
227 | my ($class, $vmid, $snap, $running, $hook) = @_; | |
228 | ||
229 | return; | |
230 | } | |
231 | ||
53c25521 FG |
232 | # Create the volume snapshots for the VM/CT. |
233 | sub __snapshot_create_vol_snapshot { | |
234 | my ($class, $vmid, $vs, $volume, $snapname) = @_; | |
235 | ||
236 | die "abstract method - implement me\n"; | |
237 | } | |
238 | ||
239 | # Remove a drive from the snapshot config. | |
240 | sub __snapshot_delete_remove_drive { | |
241 | my ($class, $snap, $remove_drive) = @_; | |
242 | ||
243 | die "abstract method - implement me\n"; | |
244 | } | |
245 | ||
246 | # Delete the vmstate file/drive | |
247 | sub __snapshot_delete_vmstate_file { | |
248 | my ($class, $snap, $force) = @_; | |
249 | ||
250 | die "abstract method - implement me\n"; | |
251 | } | |
252 | ||
253 | # Delete a volume snapshot | |
254 | sub __snapshot_delete_vol_snapshot { | |
255 | my ($class, $vmid, $vs, $volume, $snapname) = @_; | |
256 | ||
257 | die "abstract method - implement me\n"; | |
258 | } | |
259 | ||
260 | # Checks whether a volume snapshot is possible for this volume. | |
261 | sub __snapshot_rollback_vol_possible { | |
262 | my ($class, $volume, $snapname) = @_; | |
263 | ||
264 | die "abstract method - implement me\n"; | |
265 | } | |
266 | ||
267 | # Rolls back this volume. | |
268 | sub __snapshot_rollback_vol_rollback { | |
269 | my ($class, $volume, $snapname) = @_; | |
270 | ||
271 | die "abstract method - implement me\n"; | |
272 | } | |
273 | ||
274 | # Stops the VM/CT for a rollback. | |
275 | sub __snapshot_rollback_vm_stop { | |
276 | my ($class, $vmid) = @_; | |
277 | ||
278 | die "abstract method - implement me\n"; | |
279 | } | |
280 | ||
281 | # Start the VM/CT after a rollback with restored vmstate. | |
282 | sub __snapshot_rollback_vm_start { | |
283 | my ($class, $vmid, $vmstate, $forcemachine); | |
284 | ||
285 | die "abstract method - implement me\n"; | |
286 | } | |
287 | ||
288 | # Iterate over all configured volumes, calling $func for each key/value pair. | |
289 | sub __snapshot_foreach_volume { | |
290 | my ($class, $conf, $func) = @_; | |
291 | ||
292 | die "abstract method - implement me\n"; | |
293 | } | |
294 | ||
295 | # Copy the current config $source to the snapshot config $dest | |
296 | sub __snapshot_copy_config { | |
297 | my ($class, $source, $dest) = @_; | |
298 | ||
299 | foreach my $k (keys %$source) { | |
300 | next if $k eq 'snapshots'; | |
301 | next if $k eq 'snapstate'; | |
302 | next if $k eq 'snaptime'; | |
303 | next if $k eq 'vmstate'; | |
304 | next if $k eq 'lock'; | |
305 | next if $k eq 'digest'; | |
306 | next if $k eq 'description'; | |
307 | next if $k =~ m/^unused\d+$/; | |
308 | ||
309 | $dest->{$k} = $source->{$k}; | |
310 | } | |
311 | }; | |
312 | ||
313 | # Apply the snapshot config $snap to the config $conf (rollback) | |
314 | sub __snapshot_apply_config { | |
315 | my ($class, $conf, $snap) = @_; | |
316 | ||
317 | # copy snapshot list | |
318 | my $newconf = { | |
319 | snapshots => $conf->{snapshots}, | |
320 | }; | |
321 | ||
322 | # keep description and list of unused disks | |
323 | foreach my $k (keys %$conf) { | |
324 | next if !($k =~ m/^unused\d+$/ || $k eq 'description'); | |
325 | $newconf->{$k} = $conf->{$k}; | |
326 | } | |
327 | ||
328 | $class->__snapshot_copy_config($snap, $newconf); | |
329 | ||
330 | return $newconf; | |
331 | } | |
332 | ||
333 | # Prepares the configuration for snapshotting. | |
334 | sub __snapshot_prepare { | |
335 | my ($class, $vmid, $snapname, $save_vmstate, $comment) = @_; | |
336 | ||
337 | my $snap; | |
338 | ||
339 | my $updatefn = sub { | |
340 | ||
341 | my $conf = $class->load_config($vmid); | |
342 | ||
343 | die "you can't take a snapshot if it's a template\n" | |
344 | if $class->is_template($conf); | |
345 | ||
346 | $class->check_lock($conf); | |
347 | ||
348 | $conf->{lock} = 'snapshot'; | |
349 | ||
350 | die "snapshot name '$snapname' already used\n" | |
351 | if defined($conf->{snapshots}->{$snapname}); | |
352 | ||
353 | my $storecfg = PVE::Storage::config(); | |
354 | die "snapshot feature is not available\n" | |
355 | if !$class->has_feature('snapshot', $conf, $storecfg, undef, undef, $snapname eq 'vzdump'); | |
356 | ||
357 | $snap = $conf->{snapshots}->{$snapname} = {}; | |
358 | ||
359 | if ($save_vmstate && $class->__snapshot_check_running($vmid)) { | |
360 | $class->__snapshot_save_vmstate($vmid, $conf, $snapname, $storecfg); | |
361 | } | |
362 | ||
363 | $class->__snapshot_copy_config($conf, $snap); | |
364 | ||
365 | $snap->{snapstate} = "prepare"; | |
366 | $snap->{snaptime} = time(); | |
367 | $snap->{description} = $comment if $comment; | |
368 | ||
369 | $class->write_config($vmid, $conf); | |
370 | }; | |
371 | ||
372 | $class->lock_config($vmid, $updatefn); | |
373 | ||
374 | return $snap; | |
375 | } | |
376 | ||
377 | # Commits the configuration after snapshotting. | |
378 | sub __snapshot_commit { | |
379 | my ($class, $vmid, $snapname) = @_; | |
380 | ||
381 | my $updatefn = sub { | |
382 | ||
383 | my $conf = $class->load_config($vmid); | |
384 | ||
385 | die "missing snapshot lock\n" | |
386 | if !($conf->{lock} && $conf->{lock} eq 'snapshot'); | |
387 | ||
388 | my $snap = $conf->{snapshots}->{$snapname}; | |
389 | die "snapshot '$snapname' does not exist\n" if !defined($snap); | |
390 | ||
391 | die "wrong snapshot state\n" | |
392 | if !($snap->{snapstate} && $snap->{snapstate} eq "prepare"); | |
393 | ||
394 | delete $snap->{snapstate}; | |
395 | delete $conf->{lock}; | |
396 | ||
397 | $conf->{parent} = $snapname; | |
398 | ||
399 | $class->write_config($vmid, $conf); | |
400 | }; | |
401 | ||
402 | $class->lock_config($vmid, $updatefn); | |
403 | } | |
404 | ||
405 | # Creates a snapshot for the VM/CT. | |
406 | sub snapshot_create { | |
407 | my ($class, $vmid, $snapname, $save_vmstate, $comment) = @_; | |
408 | ||
409 | my $snap = $class->__snapshot_prepare($vmid, $snapname, $save_vmstate, $comment); | |
410 | ||
411 | $save_vmstate = 0 if !$snap->{vmstate}; | |
412 | ||
413 | my $conf = $class->load_config($vmid); | |
414 | ||
415 | my ($running, $freezefs) = $class->__snapshot_check_freeze_needed($vmid, $conf, $snap->{vmstate}); | |
416 | ||
417 | my $drivehash = {}; | |
418 | ||
419 | eval { | |
420 | if ($freezefs) { | |
421 | $class->__snapshot_freeze($vmid, 0); | |
422 | } | |
423 | ||
ba9db5df FG |
424 | $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, "before"); |
425 | ||
53c25521 FG |
426 | $class->__snapshot_foreach_volume($snap, sub { |
427 | my ($vs, $volume) = @_; | |
428 | ||
429 | $class->__snapshot_create_vol_snapshot($vmid, $vs, $volume, $snapname); | |
430 | $drivehash->{$vs} = 1; | |
431 | }); | |
432 | }; | |
433 | my $err = $@; | |
434 | ||
435 | if ($running) { | |
ba9db5df | 436 | $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, "after"); |
53c25521 FG |
437 | if ($freezefs) { |
438 | $class->__snapshot_freeze($vmid, 1); | |
439 | } | |
ba9db5df | 440 | $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, "after-unfreeze"); |
53c25521 FG |
441 | } |
442 | ||
443 | if ($err) { | |
444 | warn "snapshot create failed: starting cleanup\n"; | |
445 | eval { $class->snapshot_delete($vmid, $snapname, 1, $drivehash); }; | |
446 | warn "$@" if $@; | |
447 | die "$err\n"; | |
448 | } | |
449 | ||
450 | $class->__snapshot_commit($vmid, $snapname); | |
451 | } | |
452 | ||
453 | # Deletes a snapshot. | |
454 | # Note: $drivehash is only set when called from snapshot_create. | |
455 | sub snapshot_delete { | |
456 | my ($class, $vmid, $snapname, $force, $drivehash) = @_; | |
457 | ||
458 | my $prepare = 1; | |
459 | ||
460 | my $snap; | |
461 | my $unused = []; | |
462 | ||
463 | my $unlink_parent = sub { | |
464 | my ($confref, $new_parent) = @_; | |
465 | ||
466 | if ($confref->{parent} && $confref->{parent} eq $snapname) { | |
467 | if ($new_parent) { | |
468 | $confref->{parent} = $new_parent; | |
469 | } else { | |
470 | delete $confref->{parent}; | |
471 | } | |
472 | } | |
473 | }; | |
474 | ||
475 | my $updatefn = sub { | |
476 | my ($remove_drive) = @_; | |
477 | ||
478 | my $conf = $class->load_config($vmid); | |
479 | ||
480 | if (!$drivehash) { | |
481 | $class->check_lock($conf); | |
482 | die "you can't delete a snapshot if vm is a template\n" | |
483 | if $class->is_template($conf); | |
484 | } | |
485 | ||
486 | $snap = $conf->{snapshots}->{$snapname}; | |
487 | ||
488 | die "snapshot '$snapname' does not exist\n" if !defined($snap); | |
489 | ||
490 | # remove parent refs | |
491 | if (!$prepare) { | |
492 | &$unlink_parent($conf, $snap->{parent}); | |
493 | foreach my $sn (keys %{$conf->{snapshots}}) { | |
494 | next if $sn eq $snapname; | |
495 | &$unlink_parent($conf->{snapshots}->{$sn}, $snap->{parent}); | |
496 | } | |
497 | } | |
498 | ||
499 | if ($remove_drive) { | |
500 | $class->__snapshot_delete_remove_drive($snap, $remove_drive); | |
501 | } | |
502 | ||
503 | if ($prepare) { | |
504 | $snap->{snapstate} = 'delete'; | |
505 | } else { | |
506 | delete $conf->{snapshots}->{$snapname}; | |
507 | delete $conf->{lock} if $drivehash; | |
508 | foreach my $volid (@$unused) { | |
509 | $class->add_unused_volume($conf, $volid); | |
510 | } | |
511 | } | |
512 | ||
513 | $class->write_config($vmid, $conf); | |
514 | }; | |
515 | ||
516 | $class->lock_config($vmid, $updatefn); | |
517 | ||
518 | # now remove vmstate file | |
519 | if ($snap->{vmstate}) { | |
520 | $class->__snapshot_delete_vmstate_file($snap, $force); | |
521 | ||
522 | # save changes (remove vmstate from snapshot) | |
523 | $class->lock_config($vmid, $updatefn, 'vmstate') if !$force; | |
524 | }; | |
525 | ||
526 | # now remove all volume snapshots | |
527 | $class->__snapshot_foreach_volume($snap, sub { | |
528 | my ($vs, $volume) = @_; | |
529 | ||
530 | return if $snapname eq 'vzdump' && $vs ne 'rootfs' && !$volume->{backup}; | |
531 | if (!$drivehash || $drivehash->{$vs}) { | |
24623202 | 532 | eval { $class->__snapshot_delete_vol_snapshot($vmid, $vs, $volume, $snapname, $unused); }; |
53c25521 FG |
533 | if (my $err = $@) { |
534 | die $err if !$force; | |
535 | warn $err; | |
536 | } | |
537 | } | |
538 | ||
539 | # save changes (remove mp from snapshot) | |
540 | $class->lock_config($vmid, $updatefn, $vs) if !$force; | |
53c25521 FG |
541 | }); |
542 | ||
543 | # now cleanup config | |
544 | $prepare = 0; | |
545 | $class->lock_config($vmid, $updatefn); | |
546 | } | |
547 | ||
548 | # Rolls back to a given snapshot. | |
549 | sub snapshot_rollback { | |
550 | my ($class, $vmid, $snapname) = @_; | |
551 | ||
552 | my $prepare = 1; | |
553 | ||
554 | my $storecfg = PVE::Storage::config(); | |
555 | ||
556 | my $conf = $class->load_config($vmid); | |
557 | ||
558 | my $get_snapshot_config = sub { | |
559 | ||
560 | die "you can't rollback if vm is a template\n" if $class->is_template($conf); | |
561 | ||
562 | my $res = $conf->{snapshots}->{$snapname}; | |
563 | ||
564 | die "snapshot '$snapname' does not exist\n" if !defined($res); | |
565 | ||
566 | return $res; | |
567 | }; | |
568 | ||
569 | my $snap = &$get_snapshot_config(); | |
570 | ||
571 | $class->__snapshot_foreach_volume($snap, sub { | |
572 | my ($vs, $volume) = @_; | |
573 | ||
574 | $class->__snapshot_rollback_vol_possible($volume, $snapname); | |
575 | }); | |
576 | ||
577 | my $updatefn = sub { | |
578 | ||
579 | $conf = $class->load_config($vmid); | |
580 | ||
581 | $snap = &$get_snapshot_config(); | |
582 | ||
583 | die "unable to rollback to incomplete snapshot (snapstate = $snap->{snapstate})\n" | |
584 | if $snap->{snapstate}; | |
585 | ||
586 | if ($prepare) { | |
587 | $class->check_lock($conf); | |
588 | $class->__snapshot_rollback_vm_stop($vmid); | |
589 | } | |
590 | ||
591 | die "unable to rollback vm $vmid: vm is running\n" | |
592 | if $class->__snapshot_check_running($vmid); | |
593 | ||
594 | if ($prepare) { | |
595 | $conf->{lock} = 'rollback'; | |
596 | } else { | |
597 | die "got wrong lock\n" if !($conf->{lock} && $conf->{lock} eq 'rollback'); | |
598 | delete $conf->{lock}; | |
599 | } | |
600 | ||
601 | # machine only relevant for Qemu | |
602 | my $forcemachine; | |
603 | ||
604 | if (!$prepare) { | |
605 | my $has_machine_config = defined($conf->{machine}); | |
606 | ||
607 | # copy snapshot config to current config | |
608 | $conf = $class->__snapshot_apply_config($conf, $snap); | |
609 | $conf->{parent} = $snapname; | |
610 | ||
611 | # Note: old code did not store 'machine', so we try to be smart | |
612 | # and guess the snapshot was generated with kvm 1.4 (pc-i440fx-1.4). | |
613 | $forcemachine = $conf->{machine} || 'pc-i440fx-1.4'; | |
614 | # we remove the 'machine' configuration if not explicitly specified | |
615 | # in the original config. | |
616 | delete $conf->{machine} if $snap->{vmstate} && !$has_machine_config; | |
617 | } | |
618 | ||
619 | $class->write_config($vmid, $conf); | |
620 | ||
621 | if (!$prepare && $snap->{vmstate}) { | |
622 | $class->__snapshot_rollback_vm_start($vmid, $snap->{vmstate}, $forcemachine); | |
623 | } | |
624 | }; | |
625 | ||
626 | $class->lock_config($vmid, $updatefn); | |
627 | ||
628 | $class->__snapshot_foreach_volume($snap, sub { | |
629 | my ($vs, $volume) = @_; | |
630 | ||
631 | $class->__snapshot_rollback_vol_rollback($volume, $snapname); | |
632 | }); | |
633 | ||
634 | $prepare = 0; | |
635 | $class->lock_config($vmid, $updatefn); | |
636 | } | |
637 | ||
638 | 1; |