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Commit | Line | Data |
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d14a9a1b DM |
1 | package PVE::VZDump::LXC; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use File::Path; | |
6 | use File::Basename; | |
7 | use PVE::INotify; | |
8 | use PVE::Cluster qw(cfs_read_file); | |
9 | use PVE::Storage; | |
10 | use PVE::VZDump; | |
11 | use PVE::LXC; | |
86ee2a21 | 12 | use PVE::LXC::Config; |
514b5f82 | 13 | use PVE::Tools; |
d14a9a1b DM |
14 | |
15 | use base qw (PVE::VZDump::Plugin); | |
16 | ||
4ca61ce8 DM |
17 | my $default_mount_point = "/mnt/vzsnap0"; |
18 | ||
d14a9a1b | 19 | my $rsync_vm = sub { |
59a999af | 20 | my ($self, $task, $to, $text) = @_; |
d14a9a1b | 21 | |
59a999af WB |
22 | my $disks = $task->{disks}; |
23 | my $from = $disks->[0]->{dir} . '/'; | |
d14a9a1b DM |
24 | $self->loginfo ("starting $text sync $from to $to"); |
25 | ||
d14a9a1b DM |
26 | my $opts = $self->{vzdump}->{opts}; |
27 | ||
9c9a3b8c WB |
28 | my @xattr = $task->{no_xattrs} ? () : ('-X', '-A'); |
29 | ||
30 | my $rsync = ['rsync', '--stats', @xattr, '--numeric-ids', | |
bd8e1739 WB |
31 | '-aH', '--delete', '--no-whole-file', '--inplace', |
32 | '--one-file-system', '--relative']; | |
33 | push @$rsync, "--bwlimit=$opts->{bwlimit}" if $opts->{bwlimit}; | |
34 | push @$rsync, map { "--exclude=$_" } @{$self->{vzdump}->{findexcl}}; | |
35 | push @$rsync, map { "--exclude=$_" } @{$task->{exclude_dirs}}; | |
d14a9a1b | 36 | |
59a999af | 37 | my $starttime = time(); |
5a8a3087 WB |
38 | # See the rsync(1) manpage for --relative in conjunction with /./ in paths. |
39 | # This is the only way to have exclude-dirs work together with the | |
40 | # --one-file-system option. | |
41 | # This way we can pass multiple source paths and tell rsync which directory | |
42 | # they're supposed to be relative to. | |
43 | # Otherwise with eg. using multiple rsync commands means the --exclude | |
44 | # directives need to be modified for every command as they are meant to be | |
45 | # relative to the rootdir, while rsync treats them as relative to the | |
46 | # source dir. | |
47 | foreach my $disk (@$disks) { | |
bd8e1739 | 48 | push @$rsync, "$from/.$disk->{mp}"; |
5a8a3087 | 49 | } |
bd8e1739 | 50 | $self->cmd([@$rsync, $to]); |
d14a9a1b DM |
51 | my $delay = time () - $starttime; |
52 | ||
53 | $self->loginfo ("$text sync finished ($delay seconds)"); | |
54 | }; | |
55 | ||
56 | sub new { | |
57 | my ($class, $vzdump) = @_; | |
58 | ||
59 | PVE::VZDump::check_bin('lxc-stop'); | |
60 | PVE::VZDump::check_bin('lxc-start'); | |
61 | PVE::VZDump::check_bin('lxc-freeze'); | |
62 | PVE::VZDump::check_bin('lxc-unfreeze'); | |
63 | ||
64 | my $self = bless {}; | |
65 | ||
66 | $self->{vzdump} = $vzdump; | |
67 | $self->{storecfg} = PVE::Storage::config(); | |
68 | ||
69 | $self->{vmlist} = PVE::LXC::config_list(); | |
70 | ||
71 | return $self; | |
72 | } | |
73 | ||
74 | sub type { | |
75 | return 'lxc'; | |
76 | } | |
77 | ||
78 | sub vm_status { | |
79 | my ($self, $vmid) = @_; | |
80 | ||
81 | my $running = PVE::LXC::check_running($vmid) ? 1 : 0; | |
82 | ||
83 | return wantarray ? ($running, $running ? 'running' : 'stopped') : $running; | |
84 | } | |
85 | ||
4ca61ce8 | 86 | my $check_mountpoint_empty = sub { |
b739f640 DM |
87 | my ($mountpoint) = @_; |
88 | ||
4ca61ce8 DM |
89 | die "mountpoint '$mountpoint' is not a directory\n" if ! -d $mountpoint; |
90 | ||
b739f640 DM |
91 | PVE::Tools::dir_glob_foreach($mountpoint, qr/.*/, sub { |
92 | my $entry = shift; | |
93 | return if $entry eq '.' || $entry eq '..'; | |
4ca61ce8 | 94 | die "mountpoint '$mountpoint' not empty\n"; |
b739f640 | 95 | }); |
d14a9a1b DM |
96 | }; |
97 | ||
98 | sub prepare { | |
99 | my ($self, $task, $vmid, $mode) = @_; | |
100 | ||
67afe46e | 101 | my $conf = $self->{vmlist}->{$vmid} = PVE::LXC::Config->load_config($vmid); |
57ed5ed0 | 102 | my $storage_cfg = $self->{storecfg}; |
d14a9a1b | 103 | |
05812a36 WL |
104 | $self->loginfo("CT Name: $conf->{hostname}") |
105 | if defined($conf->{hostname}); | |
106 | ||
d14a9a1b DM |
107 | my $running = PVE::LXC::check_running($vmid); |
108 | ||
2e57a9f6 WB |
109 | my $disks = $task->{disks} = []; |
110 | my $exclude_dirs = $task->{exclude_dirs} = []; | |
d14a9a1b | 111 | |
27916659 | 112 | $task->{hostname} = $conf->{'hostname'} || "CT$vmid"; |
d14a9a1b | 113 | |
01dce99b WB |
114 | my ($id_map, $rootuid, $rootgid) = PVE::LXC::parse_id_maps($conf); |
115 | $task->{userns_cmd} = PVE::LXC::userns_command($id_map); | |
116 | ||
5040d81c | 117 | my $volids = $task->{volids} = []; |
d250604f | 118 | PVE::LXC::Config->foreach_mountpoint($conf, sub { |
2e57a9f6 WB |
119 | my ($name, $data) = @_; |
120 | my $volid = $data->{volume}; | |
121 | my $mount = $data->{mp}; | |
7c921c80 | 122 | my $type = $data->{type}; |
d14a9a1b | 123 | |
ca8aaa5a | 124 | return if !$volid || !$mount; |
2e57a9f6 | 125 | |
1a8269bc | 126 | if (!PVE::LXC::Config->mountpoint_backup_enabled($name, $data)) { |
2e57a9f6 | 127 | push @$exclude_dirs, $mount; |
f59c9670 | 128 | $self->loginfo("excluding $type mountpoint $name ('$mount') from backup"); |
2e57a9f6 WB |
129 | return; |
130 | } | |
131 | ||
132 | push @$disks, $data; | |
5040d81c | 133 | push @$volids, $volid |
b5990246 | 134 | if $type eq 'volume'; |
2e57a9f6 | 135 | }); |
d14a9a1b | 136 | |
d14a9a1b | 137 | if ($mode eq 'snapshot') { |
4518000b | 138 | if (!PVE::LXC::Config->has_feature('snapshot', $conf, $storage_cfg, undef, undef, 1)) { |
c31ad455 | 139 | die "mode failure - some volumes do not support snapshots\n"; |
4ca61ce8 | 140 | } |
d14a9a1b | 141 | |
2d3f23be | 142 | |
4ca61ce8 DM |
143 | if ($conf->{snapshots} && $conf->{snapshots}->{vzdump}) { |
144 | $self->loginfo("found old vzdump snapshot (force removal)"); | |
91458f71 FG |
145 | PVE::LXC::Config->lock_config($vmid, sub { |
146 | $self->unlock_vm($vmid); | |
147 | PVE::LXC::Config->snapshot_delete($vmid, 'vzdump', 1); | |
148 | $self->lock_vm($vmid); | |
149 | }); | |
4ca61ce8 | 150 | } |
d14a9a1b | 151 | |
22a91261 WB |
152 | my $rootdir = $default_mount_point; |
153 | mkpath $rootdir; | |
154 | &$check_mountpoint_empty($rootdir); | |
d14a9a1b | 155 | |
c31ad455 | 156 | # set snapshot_count (freezes CT if snapshot_count > 1) |
5040d81c | 157 | $task->{snapshot_count} = scalar(@$volids); |
f5313774 | 158 | } elsif ($mode eq 'stop') { |
22a91261 WB |
159 | my $rootdir = $default_mount_point; |
160 | mkpath $rootdir; | |
161 | &$check_mountpoint_empty($rootdir); | |
5040d81c | 162 | PVE::Storage::activate_volumes($storage_cfg, $volids); |
f5313774 | 163 | } elsif ($mode eq 'suspend') { |
632eca5a | 164 | my $pid = PVE::LXC::find_lxc_pid($vmid); |
2e57a9f6 WB |
165 | foreach my $disk (@$disks) { |
166 | $disk->{dir} = "/proc/$pid/root$disk->{mp}"; | |
167 | } | |
f5313774 DM |
168 | $task->{snapdir} = $task->{tmpdir}; |
169 | } else { | |
2d3f23be | 170 | unlock_vm($self, $vmid); |
f5313774 | 171 | die "unknown mode '$mode'\n"; # should not happen |
d14a9a1b | 172 | } |
b6c491ee WB |
173 | |
174 | if ($mode ne 'suspend') { | |
c31ad455 | 175 | # If we perform mount operations, let's unshare the mount namespace |
b6c491ee WB |
176 | # to not influence the running host. |
177 | PVE::Tools::unshare(PVE::Tools::CLONE_NEWNS); | |
178 | PVE::Tools::run_command(['mount', '--make-rprivate', '/']); | |
179 | } | |
d14a9a1b DM |
180 | } |
181 | ||
182 | sub lock_vm { | |
183 | my ($self, $vmid) = @_; | |
2d3f23be | 184 | |
ad408fe1 | 185 | PVE::LXC::Config->set_lock($vmid, 'backup'); |
d14a9a1b DM |
186 | } |
187 | ||
188 | sub unlock_vm { | |
189 | my ($self, $vmid) = @_; | |
2d3f23be | 190 | |
ad408fe1 | 191 | PVE::LXC::Config->remove_lock($vmid, 'backup') |
d14a9a1b DM |
192 | } |
193 | ||
4ca61ce8 DM |
194 | sub snapshot { |
195 | my ($self, $task, $vmid) = @_; | |
196 | ||
c31ad455 | 197 | $self->loginfo("create storage snapshot 'vzdump'"); |
4ca61ce8 DM |
198 | |
199 | # todo: freeze/unfreeze if we have more than one volid | |
91458f71 FG |
200 | PVE::LXC::Config->lock_config($vmid, sub { |
201 | $self->unlock_vm($vmid); | |
202 | PVE::LXC::Config->snapshot_create($vmid, 'vzdump', 0, "vzdump backup snapshot"); | |
203 | $self->lock_vm($vmid); | |
204 | }); | |
4ca61ce8 DM |
205 | $task->{cleanup}->{remove_snapshot} = 1; |
206 | ||
207 | # reload config | |
67afe46e | 208 | my $conf = $self->{vmlist}->{$vmid} = PVE::LXC::Config->load_config($vmid); |
c31ad455 | 209 | die "unable to read vzdump snapshot config - internal error" |
4ca61ce8 DM |
210 | if !($conf->{snapshots} && $conf->{snapshots}->{vzdump}); |
211 | ||
2e57a9f6 | 212 | my $disks = $task->{disks}; |
5040d81c | 213 | my $volids = $task->{volids}; |
4ca61ce8 | 214 | |
22a91261 | 215 | my $rootdir = $default_mount_point; |
2e57a9f6 WB |
216 | my $storage_cfg = $self->{storecfg}; |
217 | ||
5040d81c | 218 | PVE::Storage::activate_volumes($storage_cfg, $volids, 'vzdump'); |
2e57a9f6 WB |
219 | foreach my $disk (@$disks) { |
220 | $disk->{dir} = "${rootdir}$disk->{mp}"; | |
221 | PVE::LXC::mountpoint_mount($disk, $rootdir, $storage_cfg, 'vzdump'); | |
222 | } | |
223 | ||
224 | $task->{snapdir} = $rootdir; | |
4ca61ce8 DM |
225 | } |
226 | ||
d14a9a1b DM |
227 | sub copy_data_phase1 { |
228 | my ($self, $task) = @_; | |
229 | ||
9c9a3b8c WB |
230 | if (my $mntinfo = PVE::VZDump::get_mount_info($task->{snapdir})) { |
231 | if ($mntinfo->{fstype} =~ /^nfs4?/) { | |
232 | warn "temporary directory is on NFS, disabling xattr and acl support" | |
233 | . ", consider configuring a local tmpdir via /etc/vzdump.conf\n"; | |
234 | $task->{no_xattrs} = 1; | |
235 | } | |
236 | } | |
237 | ||
59a999af | 238 | $self->$rsync_vm($task, $task->{snapdir}, "first"); |
d14a9a1b DM |
239 | } |
240 | ||
241 | sub copy_data_phase2 { | |
242 | my ($self, $task) = @_; | |
243 | ||
59a999af | 244 | $self->$rsync_vm($task, $task->{snapdir}, "final"); |
d14a9a1b DM |
245 | } |
246 | ||
247 | sub stop_vm { | |
248 | my ($self, $task, $vmid) = @_; | |
249 | ||
250 | $self->cmd("lxc-stop -n $vmid"); | |
c434e3b4 DM |
251 | |
252 | # make sure container is stopped | |
253 | $self->cmd("lxc-wait -n $vmid -s STOPPED"); | |
d14a9a1b DM |
254 | } |
255 | ||
256 | sub start_vm { | |
257 | my ($self, $task, $vmid) = @_; | |
258 | ||
259 | $self->cmd ("lxc-start -n $vmid"); | |
260 | } | |
261 | ||
262 | sub suspend_vm { | |
263 | my ($self, $task, $vmid) = @_; | |
264 | ||
265 | $self->cmd ("lxc-freeze -n $vmid"); | |
266 | } | |
267 | ||
268 | sub resume_vm { | |
269 | my ($self, $task, $vmid) = @_; | |
270 | ||
271 | $self->cmd ("lxc-unfreeze -n $vmid"); | |
272 | } | |
273 | ||
274 | sub assemble { | |
275 | my ($self, $task, $vmid) = @_; | |
276 | ||
cbd6753d | 277 | my $tmpdir = $task->{tmpdir}; |
d14a9a1b | 278 | |
cbd6753d | 279 | mkpath "$tmpdir/etc/vzdump/"; |
514b5f82 | 280 | |
67afe46e | 281 | my $conf = PVE::LXC::Config->load_config($vmid); |
48314d4e | 282 | delete $conf->{lock}; |
514b5f82 | 283 | delete $conf->{snapshots}; |
f626ac9d | 284 | delete $conf->{parent}; |
514b5f82 | 285 | |
1b4cf758 | 286 | PVE::Tools::file_set_contents("$tmpdir/etc/vzdump/pct.conf", PVE::LXC::Config::write_pct_config("/lxc/$vmid.conf", $conf)); |
bf040874 WL |
287 | |
288 | my $firewall ="/etc/pve/firewall/$vmid.fw"; | |
289 | if (-e $firewall) { | |
290 | PVE::Tools::file_copy($firewall, "$tmpdir/etc/vzdump/pct.fw"); | |
291 | $task->{fw} = 1; | |
292 | } | |
d14a9a1b DM |
293 | } |
294 | ||
295 | sub archive { | |
296 | my ($self, $task, $vmid, $filename, $comp) = @_; | |
cbd6753d | 297 | |
b7ec90ed | 298 | my $disks = $task->{disks}; |
5a8a3087 | 299 | my @sources; |
b7ec90ed | 300 | |
459fd4d2 | 301 | if ($task->{mode} eq 'stop') { |
22a91261 | 302 | my $rootdir = $default_mount_point; |
2e57a9f6 WB |
303 | my $storage_cfg = $self->{storecfg}; |
304 | foreach my $disk (@$disks) { | |
305 | $disk->{dir} = "${rootdir}$disk->{mp}"; | |
306 | PVE::LXC::mountpoint_mount($disk, $rootdir, $storage_cfg); | |
5a8a3087 WB |
307 | # add every enabled mountpoint (since we use --one-file-system) |
308 | # mp already starts with a / so we only need to add the dot | |
309 | push @sources, ".$disk->{mp}"; | |
2e57a9f6 WB |
310 | } |
311 | $task->{snapdir} = $rootdir; | |
5040d81c FG |
312 | } elsif ($task->{mode} eq 'snapshot') { |
313 | # mounting the vzdump snapshots and setting $snapdir is already done, | |
314 | # but we need to include all mountpoints here! | |
315 | foreach my $disk (@$disks) { | |
316 | push @sources, ".$disk->{mp}"; | |
317 | } | |
5a8a3087 WB |
318 | } else { |
319 | # the data was rsynced to a temporary location, only use '.' to avoid | |
320 | # having mountpoints duplicated | |
321 | push @sources, '.'; | |
459fd4d2 DM |
322 | } |
323 | ||
d14a9a1b | 324 | my $opts = $self->{vzdump}->{opts}; |
d14a9a1b | 325 | my $snapdir = $task->{snapdir}; |
cbd6753d | 326 | my $tmpdir = $task->{tmpdir}; |
d14a9a1b | 327 | |
01dce99b WB |
328 | my $userns_cmd = $task->{userns_cmd}; |
329 | my $tar = [@$userns_cmd, 'tar', 'cpf', '-', '--totals', | |
fc4e132e | 330 | @$PVE::LXC::COMMON_TAR_FLAGS, |
d5cb7040 | 331 | '--one-file-system', '--warning=no-file-ignored']; |
d14a9a1b DM |
332 | |
333 | # note: --remove-files does not work because we do not | |
334 | # backup all files (filters). tar complains: | |
335 | # Cannot rmdir: Directory not empty | |
c31ad455 | 336 | # we disable this optimization for now |
d14a9a1b | 337 | #if ($snapdir eq $task->{tmpdir} && $snapdir =~ m|^$opts->{dumpdir}/|) { |
bd734680 | 338 | # push @$tar, "--remove-files"; # try to save space |
d14a9a1b DM |
339 | #} |
340 | ||
c31ad455 | 341 | # The directory parameter can give an alternative directory as source. |
cbd6753d | 342 | # the second parameter gives the structure in the tar. |
bd734680 | 343 | push @$tar, "--directory=$tmpdir", './etc/vzdump/pct.conf'; |
bf040874 | 344 | push @$tar, "./etc/vzdump/pct.fw" if $task->{fw}; |
bd734680 | 345 | push @$tar, "--directory=$snapdir"; |
e87a47ff | 346 | push @$tar, '--no-anchored', '--exclude=lost+found' if $userns_cmd; |
4953cff8 | 347 | push @$tar, '--anchored'; |
bd734680 | 348 | push @$tar, map { "--exclude=.$_" } @{$self->{vzdump}->{findexcl}}; |
332b1243 | 349 | |
5a8a3087 | 350 | push @$tar, @sources; |
bd734680 WB |
351 | |
352 | my $cmd = [ $tar ]; | |
cbd6753d | 353 | |
d14a9a1b | 354 | my $bwl = $opts->{bwlimit}*1024; # bandwidth limit for cstream |
bd734680 | 355 | push @$cmd, [ 'cstream', '-t', $bwl ] if $opts->{bwlimit}; |
3889966a | 356 | push @$cmd, [ split(/\s+/, $comp) ] if $comp; |
d14a9a1b | 357 | |
d14a9a1b | 358 | if ($opts->{stdout}) { |
f01c9293 | 359 | $self->cmd($cmd, output => ">&" . fileno($opts->{stdout})); |
d14a9a1b | 360 | } else { |
bd734680 | 361 | push @{$cmd->[-1]}, \(">" . PVE::Tools::shellquote($filename)); |
f01c9293 | 362 | $self->cmd($cmd); |
d14a9a1b DM |
363 | } |
364 | } | |
365 | ||
366 | sub cleanup { | |
367 | my ($self, $task, $vmid) = @_; | |
368 | ||
67afe46e | 369 | my $conf = PVE::LXC::Config->load_config($vmid); |
d14a9a1b | 370 | |
0c44de7b | 371 | if ($task->{mode} ne 'suspend') { |
96d20be2 DM |
372 | my $rootdir = $default_mount_point; |
373 | my $disks = $task->{disks}; | |
374 | foreach my $disk (reverse @$disks) { | |
375 | PVE::Tools::run_command(['umount', '-l', '-d', $disk->{dir}]) if $disk->{dir}; | |
376 | } | |
2e57a9f6 | 377 | } |
b739f640 | 378 | |
4ca61ce8 DM |
379 | if ($task->{cleanup}->{remove_snapshot}) { |
380 | $self->loginfo("remove vzdump snapshot"); | |
4518000b | 381 | PVE::LXC::Config->snapshot_delete($vmid, 'vzdump', 0); |
d14a9a1b | 382 | } |
d14a9a1b DM |
383 | } |
384 | ||
385 | 1; |