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1e3baf05 DM |
1 | package PVE::VZDump::QemuServer; |
2 | ||
1e3baf05 DM |
3 | use strict; |
4 | use warnings; | |
5 | use File::Path; | |
6 | use File::Basename; | |
66ab1d91 | 7 | use PVE::INotify; |
1e3baf05 DM |
8 | use PVE::VZDump; |
9 | use PVE::Cluster; | |
10 | use PVE::Storage; | |
11 | use PVE::QemuServer; | |
1e3baf05 DM |
12 | use IO::File; |
13 | ||
14 | use base qw (PVE::VZDump::Plugin); | |
15 | ||
16 | sub new { | |
17 | my ($class, $vzdump) = @_; | |
18 | ||
66ab1d91 | 19 | PVE::VZDump::check_bin('qm'); |
1e3baf05 DM |
20 | |
21 | my $self = bless { vzdump => $vzdump }; | |
22 | ||
23 | $self->{vmlist} = PVE::QemuServer::vzlist(); | |
24 | $self->{storecfg} = PVE::Storage::config(); | |
25 | ||
26 | return $self; | |
27 | }; | |
28 | ||
29 | ||
30 | sub type { | |
31 | return 'qemu'; | |
32 | } | |
33 | ||
34 | sub vmlist { | |
35 | my ($self) = @_; | |
36 | ||
37 | return [ keys %{$self->{vmlist}} ]; | |
38 | } | |
39 | ||
40 | sub prepare { | |
41 | my ($self, $task, $vmid, $mode) = @_; | |
42 | ||
43 | $task->{disks} = []; | |
44 | ||
66ab1d91 | 45 | my $conf = $self->{vmlist}->{$vmid} = PVE::QemuServer::load_config($vmid); |
1e3baf05 DM |
46 | |
47 | $task->{hostname} = $conf->{name}; | |
48 | ||
49 | my $lvmmap = PVE::VZDump::get_lvm_mapping(); | |
50 | ||
66ab1d91 | 51 | my $hostname = PVE::INotify::nodename(); |
1e3baf05 DM |
52 | |
53 | my $ind = {}; | |
54 | my $mountinfo = {}; | |
55 | my $mountind = 0; | |
56 | ||
57 | my $snapshot_count = 0; | |
58 | ||
59 | PVE::QemuServer::foreach_drive($conf, sub { | |
60 | my ($ds, $drive) = @_; | |
61 | ||
62 | return if PVE::QemuServer::drive_is_cdrom ($drive); | |
63 | ||
64 | if (defined($drive->{backup}) && $drive->{backup} eq "no") { | |
65 | $self->loginfo("exclude disk '$ds' (backup=no)"); | |
66 | return; | |
67 | } | |
68 | ||
69 | my $volid = $drive->{file}; | |
70 | ||
71 | my $path; | |
72 | ||
73 | my ($storeid, $volname) = PVE::Storage::parse_volume_id ($volid, 1); | |
74 | if ($storeid) { | |
75 | PVE::Storage::activate_storage ($self->{storecfg}, $storeid); | |
76 | $path = PVE::Storage::path ($self->{storecfg}, $volid); | |
77 | } else { | |
78 | $path = $volid; | |
79 | } | |
80 | ||
81 | return if !$path; | |
82 | ||
83 | die "no such volume '$volid'\n" if ! -e $path; | |
84 | ||
85 | my $diskinfo = { path => $path , volid => $volid, storeid => $storeid, | |
86 | snappath => $path, virtdev => $ds }; | |
87 | ||
88 | if (-b $path) { | |
89 | ||
90 | $diskinfo->{type} = 'block'; | |
91 | ||
92 | $diskinfo->{filename} = "vm-disk-$ds.raw"; | |
93 | ||
94 | if ($mode eq 'snapshot') { | |
95 | my ($lvmvg, $lvmlv) = @{$lvmmap->{$path}} if defined ($lvmmap->{$path}); | |
96 | die ("mode failure - unable to detect lvm volume group\n") if !$lvmvg; | |
97 | ||
98 | $ind->{$lvmvg} = 0 if !defined $ind->{$lvmvg}; | |
99 | $diskinfo->{snapname} = "vzsnap-$hostname-$ind->{$lvmvg}"; | |
100 | $diskinfo->{snapdev} = "/dev/$lvmvg/$diskinfo->{snapname}"; | |
101 | $diskinfo->{lvmvg} = $lvmvg; | |
102 | $diskinfo->{lvmlv} = $lvmlv; | |
103 | $diskinfo->{snappath} = $diskinfo->{snapdev}; | |
104 | $ind->{$lvmvg}++; | |
105 | ||
106 | $snapshot_count++; | |
107 | } | |
108 | ||
109 | } else { | |
110 | ||
111 | $diskinfo->{type} = 'file'; | |
112 | ||
113 | my (undef, $dir, $ext) = fileparse ($path, qr/\.[^.]*/); | |
114 | ||
115 | $diskinfo->{filename} = "vm-disk-$ds$ext"; | |
116 | ||
117 | if ($mode eq 'snapshot') { | |
118 | ||
119 | my ($srcdev, $lvmpath, $lvmvg, $lvmlv, $fstype) = | |
120 | PVE::VZDump::get_lvm_device ($dir, $lvmmap); | |
121 | ||
122 | my $targetdev = PVE::VZDump::get_lvm_device ($task->{dumpdir}, $lvmmap); | |
123 | ||
124 | die ("mode failure - unable to detect lvm volume group\n") if !$lvmvg; | |
125 | die ("mode failure - wrong lvm mount point '$lvmpath'\n") if $dir !~ m|/?$lvmpath/?|; | |
126 | die ("mode failure - unable to dump into snapshot (use option --dumpdir)\n") | |
127 | if $targetdev eq $srcdev; | |
128 | ||
129 | $ind->{$lvmvg} = 0 if !defined $ind->{$lvmvg}; | |
130 | ||
131 | my $info = $mountinfo->{$lvmpath}; | |
132 | if (!$info) { | |
133 | my $snapname = "vzsnap-$hostname-$ind->{$lvmvg}"; | |
134 | my $snapdev = "/dev/$lvmvg/$snapname"; | |
135 | $mountinfo->{$lvmpath} = $info = { | |
136 | snapdev => $snapdev, | |
137 | snapname => $snapname, | |
138 | mountpoint => "/mnt/vzsnap$mountind", | |
139 | }; | |
140 | $ind->{$lvmvg}++; | |
141 | $mountind++; | |
142 | ||
143 | $snapshot_count++; | |
144 | } | |
145 | ||
146 | $diskinfo->{snapdev} = $info->{snapdev}; | |
147 | $diskinfo->{snapname} = $info->{snapname}; | |
148 | $diskinfo->{mountpoint} = $info->{mountpoint}; | |
149 | ||
150 | $diskinfo->{lvmvg} = $lvmvg; | |
151 | $diskinfo->{lvmlv} = $lvmlv; | |
152 | ||
153 | $diskinfo->{fstype} = $fstype; | |
154 | $diskinfo->{lvmpath} = $lvmpath; | |
155 | ||
156 | $diskinfo->{snappath} = $path; | |
157 | $diskinfo->{snappath} =~ s|/?$lvmpath/?|$diskinfo->{mountpoint}/|; | |
158 | } | |
159 | } | |
160 | ||
161 | push @{$task->{disks}}, $diskinfo; | |
162 | ||
163 | }); | |
164 | ||
165 | $task->{snapshot_count} = $snapshot_count; | |
166 | } | |
167 | ||
168 | sub vm_status { | |
169 | my ($self, $vmid) = @_; | |
170 | ||
66ab1d91 DM |
171 | my $running = PVE::QemuServer::check_running($vmid) ? 1 : 0; |
172 | ||
173 | return wantarray ? ($running, $running ? 'running' : 'stopped') : $running; | |
1e3baf05 DM |
174 | } |
175 | ||
176 | sub lock_vm { | |
177 | my ($self, $vmid) = @_; | |
178 | ||
179 | $self->cmd ("qm set $vmid --lock backup"); | |
180 | } | |
181 | ||
182 | sub unlock_vm { | |
183 | my ($self, $vmid) = @_; | |
184 | ||
66ab1d91 | 185 | $self->cmd ("qm unlock $vmid"); |
1e3baf05 DM |
186 | } |
187 | ||
188 | sub stop_vm { | |
189 | my ($self, $task, $vmid) = @_; | |
190 | ||
191 | my $opts = $self->{vzdump}->{opts}; | |
192 | ||
193 | my $wait = $opts->{stopwait} * 60; | |
194 | # send shutdown and wait | |
66ab1d91 | 195 | $self->cmd ("qm shutdown $vmid --skiplock && qm wait $vmid $wait"); |
1e3baf05 DM |
196 | } |
197 | ||
198 | sub start_vm { | |
199 | my ($self, $task, $vmid) = @_; | |
200 | ||
66ab1d91 | 201 | $self->cmd ("qm start $vmid --skiplock"); |
1e3baf05 DM |
202 | } |
203 | ||
204 | sub suspend_vm { | |
205 | my ($self, $task, $vmid) = @_; | |
206 | ||
66ab1d91 | 207 | $self->cmd ("qm suspend $vmid --skiplock"); |
1e3baf05 DM |
208 | } |
209 | ||
210 | sub resume_vm { | |
211 | my ($self, $task, $vmid) = @_; | |
212 | ||
66ab1d91 | 213 | $self->cmd ("qm resume $vmid --skiplock"); |
1e3baf05 DM |
214 | } |
215 | ||
216 | sub snapshot_alloc { | |
217 | my ($self, $volid, $name, $size, $srcdev) = @_; | |
218 | ||
219 | my $cmd = "lvcreate --size ${size}M --snapshot --name '$name' '$srcdev'"; | |
220 | ||
221 | my ($storeid, $volname) = PVE::Storage::parse_volume_id ($volid, 1); | |
222 | if ($storeid) { | |
223 | ||
224 | my $scfg = PVE::Storage::storage_config ($self->{storecfg}, $storeid); | |
225 | ||
226 | # lock shared storage | |
227 | return PVE::Storage::cluster_lock_storage ($storeid, $scfg->{shared}, undef, sub { | |
228 | ||
229 | if ($scfg->{type} eq 'lvm') { | |
230 | my $vg = $scfg->{vgname}; | |
231 | ||
232 | $self->cmd ($cmd); | |
233 | ||
234 | } else { | |
235 | die "can't allocate snapshot on storage type '$scfg->{type}'\n"; | |
236 | } | |
237 | }); | |
238 | } else { | |
239 | $self->cmd ($cmd); | |
240 | } | |
241 | } | |
242 | ||
243 | sub snapshot_free { | |
244 | my ($self, $volid, $name, $snapdev, $noerr) = @_; | |
245 | ||
246 | my $cmd = "lvremove -f '$snapdev'"; | |
247 | ||
248 | eval { | |
249 | my ($storeid, $volname) = PVE::Storage::parse_volume_id ($volid, 1); | |
250 | if ($storeid) { | |
251 | ||
252 | my $scfg = PVE::Storage::storage_config ($self->{storecfg}, $storeid); | |
253 | ||
254 | # lock shared storage | |
255 | return PVE::Storage::cluster_lock_storage ($storeid, $scfg->{shared}, undef, sub { | |
256 | ||
257 | if ($scfg->{type} eq 'lvm') { | |
258 | my $vg = $scfg->{vgname}; | |
259 | ||
260 | $self->cmd ($cmd); | |
261 | ||
262 | } else { | |
263 | die "can't allocate snapshot on storage type '$scfg->{type}'\n"; | |
264 | } | |
265 | }); | |
266 | } else { | |
267 | $self->cmd ($cmd); | |
268 | } | |
269 | }; | |
270 | die $@ if !$noerr; | |
271 | $self->logerr ($@) if $@; | |
272 | } | |
273 | ||
274 | sub snapshot { | |
275 | my ($self, $task, $vmid) = @_; | |
276 | ||
277 | my $opts = $self->{vzdump}->{opts}; | |
278 | ||
279 | my $mounts = {}; | |
280 | ||
281 | foreach my $di (@{$task->{disks}}) { | |
282 | if ($di->{type} eq 'block') { | |
283 | ||
284 | if (-b $di->{snapdev}) { | |
285 | $self->loginfo ("trying to remove stale snapshot '$di->{snapdev}'"); | |
286 | $self->snapshot_free ($di->{volid}, $di->{snapname}, $di->{snapdev}, 1); | |
287 | } | |
288 | ||
289 | $di->{cleanup_lvm} = 1; | |
290 | $self->snapshot_alloc ($di->{volid}, $di->{snapname}, $opts->{size}, | |
291 | "/dev/$di->{lvmvg}/$di->{lvmlv}"); | |
292 | ||
293 | } elsif ($di->{type} eq 'file') { | |
294 | ||
295 | next if defined ($mounts->{$di->{mountpoint}}); # already mounted | |
296 | ||
297 | # note: files are never on shared storage, so we use $di->{path} instead | |
298 | # of $di->{volid} (avoid PVE:Storage calls because path start with /) | |
299 | ||
300 | if (-b $di->{snapdev}) { | |
301 | $self->loginfo ("trying to remove stale snapshot '$di->{snapdev}'"); | |
302 | ||
303 | $self->cmd_noerr ("umount $di->{mountpoint}"); | |
304 | ||
305 | $self->snapshot_free ($di->{path}, $di->{snapname}, $di->{snapdev}, 1); | |
306 | } | |
307 | ||
308 | mkpath $di->{mountpoint}; # create mount point for lvm snapshot | |
309 | ||
310 | $di->{cleanup_lvm} = 1; | |
311 | ||
312 | $self->snapshot_alloc ($di->{path}, $di->{snapname}, $opts->{size}, | |
313 | "/dev/$di->{lvmvg}/$di->{lvmlv}"); | |
314 | ||
315 | my $mopts = $di->{fstype} eq 'xfs' ? "-o nouuid" : ''; | |
316 | ||
317 | $di->{snapshot_mount} = 1; | |
318 | ||
319 | $self->cmd ("mount -t $di->{fstype} $mopts $di->{snapdev} $di->{mountpoint}"); | |
320 | ||
321 | $mounts->{$di->{mountpoint}} = 1; | |
322 | ||
323 | } else { | |
324 | die "implement me"; | |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | sub get_size { | |
330 | my $path = shift; | |
331 | ||
332 | if (-f $path) { | |
333 | return -s $path; | |
334 | } elsif (-b $path) { | |
335 | my $fh = IO::File->new ($path, "r"); | |
336 | die "unable to open '$path' to detect device size\n" if !$fh; | |
337 | my $size = sysseek $fh, 0, 2; | |
338 | $fh->close(); | |
339 | die "unable to detect device size for '$path'\n" if !$size; | |
340 | return $size; | |
341 | } | |
342 | } | |
343 | ||
344 | sub assemble { | |
345 | my ($self, $task, $vmid) = @_; | |
346 | ||
347 | my $conffile = PVE::QemuServer::config_file ($vmid); | |
348 | ||
349 | my $outfile = "$task->{tmpdir}/qemu-server.conf"; | |
350 | ||
351 | my $outfd; | |
352 | my $conffd; | |
353 | ||
354 | eval { | |
355 | ||
356 | $outfd = IO::File->new (">$outfile") || | |
357 | die "unable to open '$outfile'"; | |
358 | $conffd = IO::File->new ($conffile, 'r') || | |
359 | die "unable open '$conffile'"; | |
360 | ||
361 | while (defined (my $line = <$conffd>)) { | |
362 | next if $line =~ m/^\#vzdump\#/; # just to be sure | |
363 | print $outfd $line; | |
364 | } | |
365 | ||
366 | foreach my $di (@{$task->{disks}}) { | |
367 | if ($di->{type} eq 'block' || $di->{type} eq 'file') { | |
368 | my $size = get_size ($di->{snappath}); | |
369 | my $storeid = $di->{storeid} || ''; | |
370 | print $outfd "#vzdump#map:$di->{virtdev}:$di->{filename}:$size:$storeid:\n"; | |
371 | } else { | |
372 | die "internal error"; | |
373 | } | |
374 | } | |
375 | }; | |
376 | my $err = $@; | |
377 | ||
378 | close ($outfd) if $outfd; | |
379 | close ($conffd) if $conffd; | |
380 | ||
381 | die $err if $err; | |
382 | } | |
383 | ||
384 | sub archive { | |
385 | my ($self, $task, $vmid, $filename) = @_; | |
386 | ||
387 | my $conffile = "$task->{tmpdir}/qemu-server.conf"; | |
388 | ||
389 | my $opts = $self->{vzdump}->{opts}; | |
390 | ||
391 | my $starttime = time (); | |
392 | ||
393 | my $fh; | |
394 | ||
395 | my $bwl = $opts->{bwlimit}*1024; # bandwidth limit for cstream | |
396 | ||
397 | my @filea = ($conffile, 'qemu-server.conf'); # always first file in tar | |
398 | foreach my $di (@{$task->{disks}}) { | |
399 | if ($di->{type} eq 'block' || $di->{type} eq 'file') { | |
400 | push @filea, $di->{snappath}, $di->{filename}; | |
401 | } else { | |
402 | die "implement me"; | |
403 | } | |
404 | } | |
405 | ||
406 | my $out = ">$filename"; | |
407 | $out = "|cstream -t $bwl $out" if $opts->{bwlimit}; | |
408 | $out = "|gzip $out" if $opts->{compress}; | |
409 | ||
410 | my $files = join (' ', map { "'$_'" } @filea); | |
411 | ||
412 | $self->cmd("/usr/lib/qemu-server/vmtar $files $out"); | |
413 | } | |
414 | ||
415 | sub cleanup { | |
416 | my ($self, $task, $vmid) = @_; | |
417 | ||
418 | foreach my $di (@{$task->{disks}}) { | |
419 | ||
420 | if ($di->{snapshot_mount}) { | |
421 | $self->cmd_noerr ("umount $di->{mountpoint}"); | |
422 | } | |
423 | ||
424 | if ($di->{cleanup_lvm}) { | |
425 | if (-b $di->{snapdev}) { | |
426 | if ($di->{type} eq 'block') { | |
427 | $self->snapshot_free ($di->{volid}, $di->{snapname}, $di->{snapdev}, 1); | |
428 | } elsif ($di->{type} eq 'file') { | |
429 | $self->snapshot_free ($di->{path}, $di->{snapname}, $di->{snapdev}, 1); | |
430 | } | |
431 | } | |
432 | } | |
433 | } | |
1e3baf05 DM |
434 | } |
435 | ||
436 | 1; |