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Commit | Line | Data |
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ffda963f FG |
1 | package PVE::QemuConfig; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | ||
b2c9558d FG |
6 | use PVE::AbstractConfig; |
7 | use PVE::INotify; | |
8 | use PVE::QemuServer; | |
9 | use PVE::Storage; | |
10 | use PVE::Tools; | |
11 | ||
ffda963f FG |
12 | use base qw(PVE::AbstractConfig); |
13 | ||
14 | my $nodename = PVE::INotify::nodename(); | |
15 | ||
16 | mkdir "/etc/pve/nodes/$nodename"; | |
17 | my $confdir = "/etc/pve/nodes/$nodename/qemu-server"; | |
18 | mkdir $confdir; | |
19 | ||
20 | my $lock_dir = "/var/lock/qemu-server"; | |
21 | mkdir $lock_dir; | |
22 | ||
c9db2240 | 23 | my $MAX_UNUSED_DISKS = 256; |
ffda963f FG |
24 | |
25 | # BEGIN implemented abstract methods from PVE::AbstractConfig | |
26 | ||
27 | sub guest_type { | |
28 | return "VM"; | |
29 | } | |
30 | ||
31 | sub __config_max_unused_disks { | |
3aa44d3b | 32 | my ($class) = @_; |
ffda963f FG |
33 | |
34 | return $MAX_UNUSED_DISKS; | |
35 | } | |
36 | ||
37 | sub config_file_lock { | |
38 | my ($class, $vmid) = @_; | |
39 | ||
40 | return "$lock_dir/lock-$vmid.conf"; | |
41 | } | |
42 | ||
43 | sub cfs_config_path { | |
44 | my ($class, $vmid, $node) = @_; | |
45 | ||
46 | $node = $nodename if !$node; | |
47 | return "nodes/$node/qemu-server/$vmid.conf"; | |
48 | } | |
49 | ||
b2c9558d FG |
50 | sub has_feature { |
51 | my ($class, $feature, $conf, $storecfg, $snapname, $running, $backup_only) = @_; | |
52 | ||
53 | my $err; | |
54 | PVE::QemuServer::foreach_drive($conf, sub { | |
55 | my ($ds, $drive) = @_; | |
56 | ||
57 | return if PVE::QemuServer::drive_is_cdrom($drive); | |
5282865b | 58 | return if $backup_only && defined($drive->{backup}) && !$drive->{backup}; |
b2c9558d FG |
59 | my $volid = $drive->{file}; |
60 | $err = 1 if !PVE::Storage::volume_has_feature($storecfg, $feature, $volid, $snapname, $running); | |
61 | }); | |
62 | ||
63 | return $err ? 0 : 1; | |
64 | } | |
65 | ||
3aa44d3b | 66 | sub get_replicatable_volumes { |
c78f43b9 | 67 | my ($class, $storecfg, $vmid, $conf, $cleanup, $noerr) = @_; |
3aa44d3b DM |
68 | |
69 | my $volhash = {}; | |
70 | ||
71 | my $test_volid = sub { | |
f949eb77 | 72 | my ($volid, $attr) = @_; |
3aa44d3b | 73 | |
a6cb40f7 DM |
74 | return if $attr->{cdrom}; |
75 | ||
76 | return if !$cleanup && !$attr->{replicate}; | |
77 | ||
4ab3bcc8 DM |
78 | if ($volid =~ m|^/|) { |
79 | return if !$attr->{replicate}; | |
a6cb40f7 | 80 | return if $cleanup || $noerr; |
4ab3bcc8 DM |
81 | die "unable to replicate local file/device '$volid'\n"; |
82 | } | |
83 | ||
a722d4ff DM |
84 | my ($storeid, $volname) = PVE::Storage::parse_volume_id($volid, $noerr); |
85 | return if !$storeid; | |
86 | ||
6f249d94 | 87 | my $scfg = PVE::Storage::storage_config($storecfg, $storeid); |
a722d4ff DM |
88 | return if $scfg->{shared}; |
89 | ||
f7e7767f DM |
90 | my ($path, $owner, $vtype) = PVE::Storage::path($storecfg, $volid); |
91 | return if !$owner || ($owner != $vmid); | |
92 | ||
a6cb40f7 DM |
93 | if ($vtype ne 'images') { |
94 | return if $cleanup || $noerr; | |
95 | die "unable to replicate volume '$volid', type '$vtype'\n"; | |
96 | } | |
3aa44d3b DM |
97 | |
98 | if (!PVE::Storage::volume_has_feature($storecfg, 'replicate', $volid)) { | |
e5857ca8 | 99 | return if $cleanup || $noerr; |
3aa44d3b DM |
100 | die "missing replicate feature on volume '$volid'\n"; |
101 | } | |
102 | ||
103 | $volhash->{$volid} = 1; | |
104 | }; | |
105 | ||
f949eb77 | 106 | PVE::QemuServer::foreach_volid($conf, $test_volid); |
3aa44d3b | 107 | |
8299257e DM |
108 | # add 'unusedX' volumes to volhash |
109 | foreach my $key (keys %$conf) { | |
110 | if ($key =~ m/^unused/) { | |
111 | $test_volid->($conf->{$key}, { replicate => 1 }); | |
112 | } | |
113 | } | |
114 | ||
3aa44d3b DM |
115 | return $volhash; |
116 | } | |
117 | ||
b2c9558d FG |
118 | sub __snapshot_save_vmstate { |
119 | my ($class, $vmid, $conf, $snapname, $storecfg) = @_; | |
120 | ||
121 | my $snap = $conf->{snapshots}->{$snapname}; | |
122 | ||
2eeb0c93 FG |
123 | # first, use explicitly configured storage |
124 | my $target = $conf->{vmstatestorage}; | |
b2c9558d FG |
125 | |
126 | if (!$target) { | |
2eeb0c93 | 127 | my ($shared, $local); |
65a5ce88 | 128 | PVE::QemuServer::foreach_storage_used_by_vm($conf, sub { |
b2c9558d FG |
129 | my ($sid) = @_; |
130 | my $scfg = PVE::Storage::storage_config($storecfg, $sid); | |
2eeb0c93 FG |
131 | my $dst = $scfg->{shared} ? \$shared : \$local; |
132 | $$dst = $sid if !$$dst || $scfg->{path}; # prefer file based storage | |
b2c9558d | 133 | }); |
b2c9558d | 134 | |
2eeb0c93 FG |
135 | # second, use shared storage where VM has at least one disk |
136 | # third, use local storage where VM has at least one disk | |
137 | # fall back to local storage | |
138 | $target = $shared // $local // 'local'; | |
139 | } | |
b2c9558d FG |
140 | |
141 | my $driver_state_size = 500; # assume 32MB is enough to safe all driver state; | |
142 | # we abort live save after $conf->{memory}, so we need at max twice that space | |
143 | my $size = $conf->{memory}*2 + $driver_state_size; | |
144 | ||
145 | my $name = "vm-$vmid-state-$snapname"; | |
146 | my $scfg = PVE::Storage::storage_config($storecfg, $target); | |
147 | $name .= ".raw" if $scfg->{path}; # add filename extension for file base storage | |
148 | $snap->{vmstate} = PVE::Storage::vdisk_alloc($storecfg, $target, $vmid, 'raw', $name, $size*1024); | |
c6737ef1 | 149 | $snap->{runningmachine} = PVE::QemuServer::get_current_qemu_machine($vmid); |
b2c9558d FG |
150 | } |
151 | ||
152 | sub __snapshot_check_running { | |
153 | my ($class, $vmid) = @_; | |
154 | return PVE::QemuServer::check_running($vmid); | |
155 | } | |
156 | ||
157 | sub __snapshot_check_freeze_needed { | |
158 | my ($class, $vmid, $config, $save_vmstate) = @_; | |
159 | ||
160 | my $running = $class->__snapshot_check_running($vmid); | |
278e2c9d | 161 | if (!$save_vmstate) { |
9d66b397 | 162 | return ($running, $running && PVE::QemuServer::parse_guest_agent($config)->{enabled} && PVE::QemuServer::qga_check_running($vmid)); |
b2c9558d FG |
163 | } else { |
164 | return ($running, 0); | |
165 | } | |
166 | } | |
167 | ||
168 | sub __snapshot_freeze { | |
169 | my ($class, $vmid, $unfreeze) = @_; | |
170 | ||
171 | if ($unfreeze) { | |
172 | eval { PVE::QemuServer::vm_mon_cmd($vmid, "guest-fsfreeze-thaw"); }; | |
173 | warn "guest-fsfreeze-thaw problems - $@" if $@; | |
174 | } else { | |
175 | eval { PVE::QemuServer::vm_mon_cmd($vmid, "guest-fsfreeze-freeze"); }; | |
176 | warn "guest-fsfreeze-freeze problems - $@" if $@; | |
177 | } | |
178 | } | |
179 | ||
180 | sub __snapshot_create_vol_snapshots_hook { | |
181 | my ($class, $vmid, $snap, $running, $hook) = @_; | |
182 | ||
183 | if ($running) { | |
3a8deb55 AD |
184 | my $storecfg = PVE::Storage::config(); |
185 | ||
b2c9558d FG |
186 | if ($hook eq "before") { |
187 | if ($snap->{vmstate}) { | |
b2c9558d | 188 | my $path = PVE::Storage::path($storecfg, $snap->{vmstate}); |
3a8deb55 AD |
189 | PVE::Storage::activate_volumes($storecfg, [$snap->{vmstate}]); |
190 | ||
b2c9558d FG |
191 | PVE::QemuServer::vm_mon_cmd($vmid, "savevm-start", statefile => $path); |
192 | for(;;) { | |
193 | my $stat = PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "query-savevm"); | |
194 | if (!$stat->{status}) { | |
195 | die "savevm not active\n"; | |
196 | } elsif ($stat->{status} eq 'active') { | |
197 | sleep(1); | |
198 | next; | |
199 | } elsif ($stat->{status} eq 'completed') { | |
200 | last; | |
201 | } else { | |
202 | die "query-savevm returned status '$stat->{status}'\n"; | |
203 | } | |
204 | } | |
205 | } else { | |
206 | PVE::QemuServer::vm_mon_cmd($vmid, "savevm-start"); | |
207 | } | |
208 | } elsif ($hook eq "after") { | |
3a8deb55 AD |
209 | eval { |
210 | PVE::QemuServer::vm_mon_cmd($vmid, "savevm-end"); | |
211 | PVE::Storage::deactivate_volumes($storecfg, [$snap->{vmstate}]) if $snap->{vmstate}; | |
212 | }; | |
b2c9558d FG |
213 | warn $@ if $@; |
214 | } elsif ($hook eq "after-freeze") { | |
215 | # savevm-end is async, we need to wait | |
216 | for (;;) { | |
217 | my $stat = PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "query-savevm"); | |
218 | if (!$stat->{bytes}) { | |
219 | last; | |
220 | } else { | |
221 | print "savevm not yet finished\n"; | |
222 | sleep(1); | |
223 | next; | |
224 | } | |
225 | } | |
226 | } | |
227 | } | |
228 | } | |
229 | ||
230 | sub __snapshot_create_vol_snapshot { | |
231 | my ($class, $vmid, $ds, $drive, $snapname) = @_; | |
232 | ||
233 | return if PVE::QemuServer::drive_is_cdrom($drive); | |
234 | ||
235 | my $volid = $drive->{file}; | |
236 | my $device = "drive-$ds"; | |
237 | my $storecfg = PVE::Storage::config(); | |
238 | ||
239 | PVE::QemuServer::qemu_volume_snapshot($vmid, $device, $storecfg, $volid, $snapname); | |
240 | } | |
241 | ||
242 | sub __snapshot_delete_remove_drive { | |
243 | my ($class, $snap, $remove_drive) = @_; | |
244 | ||
245 | if ($remove_drive eq 'vmstate') { | |
246 | delete $snap->{$remove_drive}; | |
247 | } else { | |
248 | my $drive = PVE::QemuServer::parse_drive($remove_drive, $snap->{$remove_drive}); | |
249 | return if PVE::QemuServer::drive_is_cdrom($drive); | |
250 | ||
251 | my $volid = $drive->{file}; | |
252 | delete $snap->{$remove_drive}; | |
253 | $class->add_unused_volume($snap, $volid); | |
254 | } | |
255 | } | |
256 | ||
257 | sub __snapshot_delete_vmstate_file { | |
258 | my ($class, $snap, $force) = @_; | |
259 | ||
260 | my $storecfg = PVE::Storage::config(); | |
261 | ||
262 | eval { PVE::Storage::vdisk_free($storecfg, $snap->{vmstate}); }; | |
263 | if (my $err = $@) { | |
264 | die $err if !$force; | |
265 | warn $err; | |
266 | } | |
267 | } | |
268 | ||
269 | sub __snapshot_delete_vol_snapshot { | |
270 | my ($class, $vmid, $ds, $drive, $snapname, $unused) = @_; | |
271 | ||
272 | return if PVE::QemuServer::drive_is_cdrom($drive); | |
273 | my $storecfg = PVE::Storage::config(); | |
274 | my $volid = $drive->{file}; | |
275 | my $device = "drive-$ds"; | |
276 | ||
277 | PVE::QemuServer::qemu_volume_snapshot_delete($vmid, $device, $storecfg, $volid, $snapname); | |
278 | ||
279 | push @$unused, $volid; | |
280 | } | |
281 | ||
58b1a8d7 DC |
282 | sub __snapshot_rollback_hook { |
283 | my ($class, $vmid, $conf, $snap, $prepare, $data) = @_; | |
284 | ||
285 | if ($prepare) { | |
286 | # we save the machine of the current config | |
287 | $data->{oldmachine} = $conf->{machine}; | |
288 | } else { | |
e6d35c71 TL |
289 | # if we have a 'runningmachine' entry in the snapshot we use that |
290 | # for the forcemachine parameter, else we use the old logic | |
c6737ef1 DC |
291 | if (defined($conf->{runningmachine})) { |
292 | $data->{forcemachine} = $conf->{runningmachine}; | |
293 | delete $conf->{runningmachine}; | |
294 | } else { | |
295 | # Note: old code did not store 'machine', so we try to be smart | |
296 | # and guess the snapshot was generated with kvm 1.4 (pc-i440fx-1.4). | |
297 | $data->{forcemachine} = $conf->{machine} || 'pc-i440fx-1.4'; | |
298 | ||
299 | # we remove the 'machine' configuration if not explicitly specified | |
300 | # in the original config. | |
301 | delete $conf->{machine} if $snap->{vmstate} && !defined($data->{oldmachine}); | |
302 | } | |
6ee499ff DC |
303 | |
304 | if ($conf->{vmgenid}) { | |
4f4d9772 TL |
305 | # tell the VM that it's another generation, so it can react |
306 | # appropriately, e.g. dirty-mark copies of distributed databases or | |
307 | # re-initializing its random number generator | |
6ee499ff DC |
308 | $conf->{vmgenid} = PVE::QemuServer::generate_uuid(); |
309 | } | |
58b1a8d7 DC |
310 | } |
311 | ||
312 | return; | |
313 | } | |
314 | ||
b2c9558d FG |
315 | sub __snapshot_rollback_vol_possible { |
316 | my ($class, $drive, $snapname) = @_; | |
317 | ||
318 | return if PVE::QemuServer::drive_is_cdrom($drive); | |
319 | ||
320 | my $storecfg = PVE::Storage::config(); | |
321 | my $volid = $drive->{file}; | |
322 | ||
323 | PVE::Storage::volume_rollback_is_possible($storecfg, $volid, $snapname); | |
324 | } | |
325 | ||
326 | sub __snapshot_rollback_vol_rollback { | |
327 | my ($class, $drive, $snapname) = @_; | |
328 | ||
329 | return if PVE::QemuServer::drive_is_cdrom($drive); | |
330 | ||
331 | my $storecfg = PVE::Storage::config(); | |
332 | PVE::Storage::volume_snapshot_rollback($storecfg, $drive->{file}, $snapname); | |
333 | } | |
334 | ||
335 | sub __snapshot_rollback_vm_stop { | |
336 | my ($class, $vmid) = @_; | |
337 | ||
338 | my $storecfg = PVE::Storage::config(); | |
339 | PVE::QemuServer::vm_stop($storecfg, $vmid, undef, undef, 5, undef, undef); | |
340 | } | |
341 | ||
342 | sub __snapshot_rollback_vm_start { | |
58b1a8d7 | 343 | my ($class, $vmid, $vmstate, $data) = @_; |
b2c9558d FG |
344 | |
345 | my $storecfg = PVE::Storage::config(); | |
346 | my $statefile = PVE::Storage::path($storecfg, $vmstate); | |
58b1a8d7 | 347 | PVE::QemuServer::vm_start($storecfg, $vmid, $statefile, undef, undef, undef, $data->{forcemachine}); |
b2c9558d FG |
348 | } |
349 | ||
c4a54ed5 FG |
350 | sub __snapshot_rollback_get_unused { |
351 | my ($class, $conf, $snap) = @_; | |
352 | ||
353 | my $unused = []; | |
354 | ||
355 | $class->__snapshot_foreach_volume($conf, sub { | |
356 | my ($vs, $volume) = @_; | |
357 | ||
358 | return if PVE::QemuServer::drive_is_cdrom($volume); | |
359 | ||
360 | my $found = 0; | |
361 | my $volid = $volume->{file}; | |
362 | ||
363 | $class->__snapshot_foreach_volume($snap, sub { | |
364 | my ($ds, $drive) = @_; | |
365 | ||
366 | return if $found; | |
367 | return if PVE::QemuServer::drive_is_cdrom($drive); | |
368 | ||
369 | $found = 1 | |
370 | if ($drive->{file} && $drive->{file} eq $volid); | |
371 | }); | |
372 | ||
373 | push @$unused, $volid if !$found; | |
374 | }); | |
375 | ||
376 | return $unused; | |
377 | } | |
378 | ||
b2c9558d FG |
379 | sub __snapshot_foreach_volume { |
380 | my ($class, $conf, $func) = @_; | |
381 | ||
382 | PVE::QemuServer::foreach_drive($conf, $func); | |
383 | } | |
ffda963f FG |
384 | # END implemented abstract methods from PVE::AbstractConfig |
385 | ||
386 | 1; |