]>
Commit | Line | Data |
---|---|---|
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 $rsync_vm = sub { |
50ee6ffe | 20 | my ($self, $task, $to, $text, $first) = @_; |
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 $rsync = ['rsync', '--stats', @xattr, '--numeric-ids', | |
50ee6ffe WB |
31 | '-aH', '--delete', '--no-whole-file', |
32 | ($first ? '--sparse' : '--inplace'), | |
bd8e1739 WB |
33 | '--one-file-system', '--relative']; |
34 | push @$rsync, "--bwlimit=$opts->{bwlimit}" if $opts->{bwlimit}; | |
35 | push @$rsync, map { "--exclude=$_" } @{$self->{vzdump}->{findexcl}}; | |
36 | push @$rsync, map { "--exclude=$_" } @{$task->{exclude_dirs}}; | |
d14a9a1b | 37 | |
59a999af | 38 | my $starttime = time(); |
5a8a3087 WB |
39 | # See the rsync(1) manpage for --relative in conjunction with /./ in paths. |
40 | # This is the only way to have exclude-dirs work together with the | |
41 | # --one-file-system option. | |
42 | # This way we can pass multiple source paths and tell rsync which directory | |
43 | # they're supposed to be relative to. | |
44 | # Otherwise with eg. using multiple rsync commands means the --exclude | |
45 | # directives need to be modified for every command as they are meant to be | |
46 | # relative to the rootdir, while rsync treats them as relative to the | |
47 | # source dir. | |
48 | foreach my $disk (@$disks) { | |
bd8e1739 | 49 | push @$rsync, "$from/.$disk->{mp}"; |
5a8a3087 | 50 | } |
bd8e1739 | 51 | $self->cmd([@$rsync, $to]); |
d14a9a1b DM |
52 | my $delay = time () - $starttime; |
53 | ||
54 | $self->loginfo ("$text sync finished ($delay seconds)"); | |
55 | }; | |
56 | ||
57 | sub new { | |
58 | my ($class, $vzdump) = @_; | |
59 | ||
60 | PVE::VZDump::check_bin('lxc-stop'); | |
61 | PVE::VZDump::check_bin('lxc-start'); | |
62 | PVE::VZDump::check_bin('lxc-freeze'); | |
63 | PVE::VZDump::check_bin('lxc-unfreeze'); | |
64 | ||
65 | my $self = bless {}; | |
66 | ||
67 | $self->{vzdump} = $vzdump; | |
68 | $self->{storecfg} = PVE::Storage::config(); | |
69 | ||
70 | $self->{vmlist} = PVE::LXC::config_list(); | |
71 | ||
72 | return $self; | |
73 | } | |
74 | ||
75 | sub type { | |
76 | return 'lxc'; | |
77 | } | |
78 | ||
79 | sub vm_status { | |
80 | my ($self, $vmid) = @_; | |
81 | ||
82 | my $running = PVE::LXC::check_running($vmid) ? 1 : 0; | |
83 | ||
84 | return wantarray ? ($running, $running ? 'running' : 'stopped') : $running; | |
85 | } | |
86 | ||
4ca61ce8 | 87 | my $check_mountpoint_empty = sub { |
b739f640 DM |
88 | my ($mountpoint) = @_; |
89 | ||
235dbdf3 | 90 | die "mount point '$mountpoint' is not a directory\n" if ! -d $mountpoint; |
4ca61ce8 | 91 | |
b739f640 DM |
92 | PVE::Tools::dir_glob_foreach($mountpoint, qr/.*/, sub { |
93 | my $entry = shift; | |
94 | return if $entry eq '.' || $entry eq '..'; | |
235dbdf3 | 95 | die "mount point '$mountpoint' not empty\n"; |
b739f640 | 96 | }); |
d14a9a1b DM |
97 | }; |
98 | ||
99 | sub prepare { | |
100 | my ($self, $task, $vmid, $mode) = @_; | |
101 | ||
67afe46e | 102 | my $conf = $self->{vmlist}->{$vmid} = PVE::LXC::Config->load_config($vmid); |
57ed5ed0 | 103 | my $storage_cfg = $self->{storecfg}; |
d14a9a1b | 104 | |
05812a36 WL |
105 | $self->loginfo("CT Name: $conf->{hostname}") |
106 | if defined($conf->{hostname}); | |
107 | ||
d14a9a1b DM |
108 | my $running = PVE::LXC::check_running($vmid); |
109 | ||
2e57a9f6 WB |
110 | my $disks = $task->{disks} = []; |
111 | my $exclude_dirs = $task->{exclude_dirs} = []; | |
d14a9a1b | 112 | |
27916659 | 113 | $task->{hostname} = $conf->{'hostname'} || "CT$vmid"; |
d14a9a1b | 114 | |
01dce99b WB |
115 | my ($id_map, $rootuid, $rootgid) = PVE::LXC::parse_id_maps($conf); |
116 | $task->{userns_cmd} = PVE::LXC::userns_command($id_map); | |
117 | ||
5040d81c | 118 | my $volids = $task->{volids} = []; |
d250604f | 119 | PVE::LXC::Config->foreach_mountpoint($conf, sub { |
2e57a9f6 WB |
120 | my ($name, $data) = @_; |
121 | my $volid = $data->{volume}; | |
122 | my $mount = $data->{mp}; | |
7c921c80 | 123 | my $type = $data->{type}; |
d14a9a1b | 124 | |
ca8aaa5a | 125 | return if !$volid || !$mount; |
2e57a9f6 | 126 | |
1a8269bc | 127 | if (!PVE::LXC::Config->mountpoint_backup_enabled($name, $data)) { |
2e57a9f6 | 128 | push @$exclude_dirs, $mount; |
235dbdf3 | 129 | $self->loginfo("excluding $type mount point $name ('$mount') from backup"); |
2e57a9f6 WB |
130 | return; |
131 | } | |
132 | ||
133 | push @$disks, $data; | |
5040d81c | 134 | push @$volids, $volid |
b5990246 | 135 | if $type eq 'volume'; |
2e57a9f6 | 136 | }); |
d14a9a1b | 137 | |
d14a9a1b | 138 | if ($mode eq 'snapshot') { |
4518000b | 139 | if (!PVE::LXC::Config->has_feature('snapshot', $conf, $storage_cfg, undef, undef, 1)) { |
c31ad455 | 140 | die "mode failure - some volumes do not support snapshots\n"; |
4ca61ce8 | 141 | } |
d14a9a1b | 142 | |
2d3f23be | 143 | |
4ca61ce8 DM |
144 | if ($conf->{snapshots} && $conf->{snapshots}->{vzdump}) { |
145 | $self->loginfo("found old vzdump snapshot (force removal)"); | |
91458f71 FG |
146 | PVE::LXC::Config->lock_config($vmid, sub { |
147 | $self->unlock_vm($vmid); | |
148 | PVE::LXC::Config->snapshot_delete($vmid, 'vzdump', 1); | |
149 | $self->lock_vm($vmid); | |
150 | }); | |
4ca61ce8 | 151 | } |
d14a9a1b | 152 | |
22a91261 WB |
153 | my $rootdir = $default_mount_point; |
154 | mkpath $rootdir; | |
155 | &$check_mountpoint_empty($rootdir); | |
d14a9a1b | 156 | |
c31ad455 | 157 | # set snapshot_count (freezes CT if snapshot_count > 1) |
5040d81c | 158 | $task->{snapshot_count} = scalar(@$volids); |
f5313774 | 159 | } elsif ($mode eq 'stop') { |
22a91261 WB |
160 | my $rootdir = $default_mount_point; |
161 | mkpath $rootdir; | |
162 | &$check_mountpoint_empty($rootdir); | |
5040d81c | 163 | PVE::Storage::activate_volumes($storage_cfg, $volids); |
f5313774 | 164 | } elsif ($mode eq 'suspend') { |
632eca5a | 165 | my $pid = PVE::LXC::find_lxc_pid($vmid); |
2e57a9f6 WB |
166 | foreach my $disk (@$disks) { |
167 | $disk->{dir} = "/proc/$pid/root$disk->{mp}"; | |
168 | } | |
f5313774 DM |
169 | $task->{snapdir} = $task->{tmpdir}; |
170 | } else { | |
2d3f23be | 171 | unlock_vm($self, $vmid); |
f5313774 | 172 | die "unknown mode '$mode'\n"; # should not happen |
d14a9a1b | 173 | } |
b6c491ee WB |
174 | |
175 | if ($mode ne 'suspend') { | |
c31ad455 | 176 | # If we perform mount operations, let's unshare the mount namespace |
b6c491ee WB |
177 | # to not influence the running host. |
178 | PVE::Tools::unshare(PVE::Tools::CLONE_NEWNS); | |
a78425d7 | 179 | PVE::Tools::run_command(['mount', '--make-rslave', '/']); |
b6c491ee | 180 | } |
d14a9a1b DM |
181 | } |
182 | ||
183 | sub lock_vm { | |
184 | my ($self, $vmid) = @_; | |
2d3f23be | 185 | |
ad408fe1 | 186 | PVE::LXC::Config->set_lock($vmid, 'backup'); |
d14a9a1b DM |
187 | } |
188 | ||
189 | sub unlock_vm { | |
190 | my ($self, $vmid) = @_; | |
2d3f23be | 191 | |
ad408fe1 | 192 | PVE::LXC::Config->remove_lock($vmid, 'backup') |
d14a9a1b DM |
193 | } |
194 | ||
4ca61ce8 DM |
195 | sub snapshot { |
196 | my ($self, $task, $vmid) = @_; | |
197 | ||
c31ad455 | 198 | $self->loginfo("create storage snapshot 'vzdump'"); |
4ca61ce8 DM |
199 | |
200 | # todo: freeze/unfreeze if we have more than one volid | |
91458f71 FG |
201 | PVE::LXC::Config->lock_config($vmid, sub { |
202 | $self->unlock_vm($vmid); | |
203 | PVE::LXC::Config->snapshot_create($vmid, 'vzdump', 0, "vzdump backup snapshot"); | |
204 | $self->lock_vm($vmid); | |
205 | }); | |
4ca61ce8 DM |
206 | $task->{cleanup}->{remove_snapshot} = 1; |
207 | ||
208 | # reload config | |
67afe46e | 209 | my $conf = $self->{vmlist}->{$vmid} = PVE::LXC::Config->load_config($vmid); |
c31ad455 | 210 | die "unable to read vzdump snapshot config - internal error" |
4ca61ce8 DM |
211 | if !($conf->{snapshots} && $conf->{snapshots}->{vzdump}); |
212 | ||
2e57a9f6 | 213 | my $disks = $task->{disks}; |
5040d81c | 214 | my $volids = $task->{volids}; |
4ca61ce8 | 215 | |
22a91261 | 216 | my $rootdir = $default_mount_point; |
2e57a9f6 WB |
217 | my $storage_cfg = $self->{storecfg}; |
218 | ||
5040d81c | 219 | PVE::Storage::activate_volumes($storage_cfg, $volids, 'vzdump'); |
2e57a9f6 WB |
220 | foreach my $disk (@$disks) { |
221 | $disk->{dir} = "${rootdir}$disk->{mp}"; | |
222 | PVE::LXC::mountpoint_mount($disk, $rootdir, $storage_cfg, 'vzdump'); | |
223 | } | |
224 | ||
225 | $task->{snapdir} = $rootdir; | |
4ca61ce8 DM |
226 | } |
227 | ||
d14a9a1b DM |
228 | sub copy_data_phase1 { |
229 | my ($self, $task) = @_; | |
230 | ||
9c9a3b8c WB |
231 | if (my $mntinfo = PVE::VZDump::get_mount_info($task->{snapdir})) { |
232 | if ($mntinfo->{fstype} =~ /^nfs4?/) { | |
b67c14c0 WB |
233 | $self->loginfo( |
234 | "temporary directory is on NFS, disabling xattr and acl" | |
235 | ." support, consider configuring a local tmpdir via" | |
236 | ." /etc/vzdump.conf\n"); | |
9c9a3b8c WB |
237 | $task->{no_xattrs} = 1; |
238 | } | |
239 | } | |
240 | ||
50ee6ffe | 241 | $self->$rsync_vm($task, $task->{snapdir}, "first", 1); |
d14a9a1b DM |
242 | } |
243 | ||
244 | sub copy_data_phase2 { | |
245 | my ($self, $task) = @_; | |
246 | ||
50ee6ffe | 247 | $self->$rsync_vm($task, $task->{snapdir}, "final", 0); |
d14a9a1b DM |
248 | } |
249 | ||
250 | sub stop_vm { | |
251 | my ($self, $task, $vmid) = @_; | |
252 | ||
f90f7e53 TL |
253 | my $opts = $self->{vzdump}->{opts}; |
254 | my $timeout = $opts->{stopwait} * 60; | |
255 | ||
b1bad293 | 256 | PVE::LXC::vm_stop($vmid, 0, $timeout); |
d14a9a1b DM |
257 | } |
258 | ||
259 | sub start_vm { | |
260 | my ($self, $task, $vmid) = @_; | |
261 | ||
be8ec1b0 | 262 | $self->cmd(['systemctl', 'start', "pve-container\@$vmid"]); |
d14a9a1b DM |
263 | } |
264 | ||
265 | sub suspend_vm { | |
266 | my ($self, $task, $vmid) = @_; | |
267 | ||
268 | $self->cmd ("lxc-freeze -n $vmid"); | |
269 | } | |
270 | ||
271 | sub resume_vm { | |
272 | my ($self, $task, $vmid) = @_; | |
273 | ||
274 | $self->cmd ("lxc-unfreeze -n $vmid"); | |
275 | } | |
276 | ||
277 | sub assemble { | |
278 | my ($self, $task, $vmid) = @_; | |
279 | ||
cbd6753d | 280 | my $tmpdir = $task->{tmpdir}; |
d14a9a1b | 281 | |
cbd6753d | 282 | mkpath "$tmpdir/etc/vzdump/"; |
514b5f82 | 283 | |
67afe46e | 284 | my $conf = PVE::LXC::Config->load_config($vmid); |
48314d4e | 285 | delete $conf->{lock}; |
514b5f82 | 286 | delete $conf->{snapshots}; |
f626ac9d | 287 | delete $conf->{parent}; |
514b5f82 | 288 | |
1b4cf758 | 289 | PVE::Tools::file_set_contents("$tmpdir/etc/vzdump/pct.conf", PVE::LXC::Config::write_pct_config("/lxc/$vmid.conf", $conf)); |
bf040874 WL |
290 | |
291 | my $firewall ="/etc/pve/firewall/$vmid.fw"; | |
292 | if (-e $firewall) { | |
293 | PVE::Tools::file_copy($firewall, "$tmpdir/etc/vzdump/pct.fw"); | |
294 | $task->{fw} = 1; | |
295 | } | |
d14a9a1b DM |
296 | } |
297 | ||
298 | sub archive { | |
299 | my ($self, $task, $vmid, $filename, $comp) = @_; | |
cbd6753d | 300 | |
b7ec90ed | 301 | my $disks = $task->{disks}; |
5a8a3087 | 302 | my @sources; |
b7ec90ed | 303 | |
459fd4d2 | 304 | if ($task->{mode} eq 'stop') { |
22a91261 | 305 | my $rootdir = $default_mount_point; |
2e57a9f6 WB |
306 | my $storage_cfg = $self->{storecfg}; |
307 | foreach my $disk (@$disks) { | |
308 | $disk->{dir} = "${rootdir}$disk->{mp}"; | |
309 | PVE::LXC::mountpoint_mount($disk, $rootdir, $storage_cfg); | |
5a8a3087 WB |
310 | # add every enabled mountpoint (since we use --one-file-system) |
311 | # mp already starts with a / so we only need to add the dot | |
312 | push @sources, ".$disk->{mp}"; | |
2e57a9f6 WB |
313 | } |
314 | $task->{snapdir} = $rootdir; | |
5040d81c FG |
315 | } elsif ($task->{mode} eq 'snapshot') { |
316 | # mounting the vzdump snapshots and setting $snapdir is already done, | |
317 | # but we need to include all mountpoints here! | |
318 | foreach my $disk (@$disks) { | |
319 | push @sources, ".$disk->{mp}"; | |
320 | } | |
5a8a3087 WB |
321 | } else { |
322 | # the data was rsynced to a temporary location, only use '.' to avoid | |
323 | # having mountpoints duplicated | |
324 | push @sources, '.'; | |
459fd4d2 DM |
325 | } |
326 | ||
d14a9a1b | 327 | my $opts = $self->{vzdump}->{opts}; |
d14a9a1b | 328 | my $snapdir = $task->{snapdir}; |
cbd6753d | 329 | my $tmpdir = $task->{tmpdir}; |
d14a9a1b | 330 | |
01dce99b WB |
331 | my $userns_cmd = $task->{userns_cmd}; |
332 | my $tar = [@$userns_cmd, 'tar', 'cpf', '-', '--totals', | |
5fa038ab | 333 | @PVE::Storage::Plugin::COMMON_TAR_FLAGS, |
d5cb7040 | 334 | '--one-file-system', '--warning=no-file-ignored']; |
d14a9a1b DM |
335 | |
336 | # note: --remove-files does not work because we do not | |
337 | # backup all files (filters). tar complains: | |
338 | # Cannot rmdir: Directory not empty | |
c31ad455 | 339 | # we disable this optimization for now |
d14a9a1b | 340 | #if ($snapdir eq $task->{tmpdir} && $snapdir =~ m|^$opts->{dumpdir}/|) { |
bd734680 | 341 | # push @$tar, "--remove-files"; # try to save space |
d14a9a1b DM |
342 | #} |
343 | ||
c31ad455 | 344 | # The directory parameter can give an alternative directory as source. |
cbd6753d | 345 | # the second parameter gives the structure in the tar. |
bd734680 | 346 | push @$tar, "--directory=$tmpdir", './etc/vzdump/pct.conf'; |
bf040874 | 347 | push @$tar, "./etc/vzdump/pct.fw" if $task->{fw}; |
bd734680 | 348 | push @$tar, "--directory=$snapdir"; |
e87a47ff | 349 | push @$tar, '--no-anchored', '--exclude=lost+found' if $userns_cmd; |
4953cff8 | 350 | push @$tar, '--anchored'; |
bd734680 | 351 | push @$tar, map { "--exclude=.$_" } @{$self->{vzdump}->{findexcl}}; |
332b1243 | 352 | |
5a8a3087 | 353 | push @$tar, @sources; |
bd734680 WB |
354 | |
355 | my $cmd = [ $tar ]; | |
cbd6753d | 356 | |
d14a9a1b | 357 | my $bwl = $opts->{bwlimit}*1024; # bandwidth limit for cstream |
bd734680 | 358 | push @$cmd, [ 'cstream', '-t', $bwl ] if $opts->{bwlimit}; |
3889966a | 359 | push @$cmd, [ split(/\s+/, $comp) ] if $comp; |
d14a9a1b | 360 | |
d14a9a1b | 361 | if ($opts->{stdout}) { |
f01c9293 | 362 | $self->cmd($cmd, output => ">&" . fileno($opts->{stdout})); |
d14a9a1b | 363 | } else { |
bd734680 | 364 | push @{$cmd->[-1]}, \(">" . PVE::Tools::shellquote($filename)); |
f01c9293 | 365 | $self->cmd($cmd); |
d14a9a1b DM |
366 | } |
367 | } | |
368 | ||
369 | sub cleanup { | |
370 | my ($self, $task, $vmid) = @_; | |
371 | ||
67afe46e | 372 | my $conf = PVE::LXC::Config->load_config($vmid); |
d14a9a1b | 373 | |
0c44de7b | 374 | if ($task->{mode} ne 'suspend') { |
96d20be2 DM |
375 | my $rootdir = $default_mount_point; |
376 | my $disks = $task->{disks}; | |
377 | foreach my $disk (reverse @$disks) { | |
378 | PVE::Tools::run_command(['umount', '-l', '-d', $disk->{dir}]) if $disk->{dir}; | |
379 | } | |
2e57a9f6 | 380 | } |
b739f640 | 381 | |
4ca61ce8 DM |
382 | if ($task->{cleanup}->{remove_snapshot}) { |
383 | $self->loginfo("remove vzdump snapshot"); | |
4518000b | 384 | PVE::LXC::Config->snapshot_delete($vmid, 'vzdump', 0); |
d14a9a1b | 385 | } |
d14a9a1b DM |
386 | } |
387 | ||
388 | 1; |