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Commit | Line | Data |
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6f42807e DM |
1 | package PVE::LXC::Migrate; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use PVE::AbstractMigrate; | |
6 | use File::Basename; | |
7 | use File::Copy; # fixme: remove | |
8 | use PVE::Tools; | |
9 | use PVE::INotify; | |
10 | use PVE::Cluster; | |
11 | use PVE::Storage; | |
8d66edee | 12 | use PVE::LXC::Config; |
6f42807e | 13 | use PVE::LXC; |
3efa5e3d DM |
14 | use PVE::ReplicationConfig; |
15 | use PVE::ReplicationState; | |
16 | use PVE::Replication; | |
6f42807e DM |
17 | |
18 | use base qw(PVE::AbstractMigrate); | |
19 | ||
20 | sub lock_vm { | |
21 | my ($self, $vmid, $code, @param) = @_; | |
22 | ||
67afe46e | 23 | return PVE::LXC::Config->lock_config($vmid, $code, @param); |
6f42807e DM |
24 | } |
25 | ||
26 | sub prepare { | |
27 | my ($self, $vmid) = @_; | |
28 | ||
29 | my $online = $self->{opts}->{online}; | |
a7cedb73 | 30 | my $restart= $self->{opts}->{restart}; |
6f42807e DM |
31 | |
32 | $self->{storecfg} = PVE::Storage::config(); | |
33 | ||
1cd1fa12 | 34 | # test if CT exists |
67afe46e | 35 | my $conf = $self->{vmconf} = PVE::LXC::Config->load_config($vmid); |
6f42807e | 36 | |
67afe46e | 37 | PVE::LXC::Config->check_lock($conf); |
6f42807e DM |
38 | |
39 | my $running = 0; | |
40 | if (PVE::LXC::check_running($vmid)) { | |
a7cedb73 DC |
41 | die "lxc live migration is currently not implemented\n" if $online; |
42 | die "running container can only be migrated in restart mode" if !$restart; | |
6f42807e DM |
43 | $running = 1; |
44 | } | |
a7cedb73 | 45 | $self->{was_running} = $running; |
6f42807e | 46 | |
9746c095 FG |
47 | my $force = $self->{opts}->{force} // 0; |
48 | ||
015740e6 | 49 | PVE::LXC::Config->foreach_volume($conf, sub { |
6f42807e DM |
50 | my ($ms, $mountpoint) = @_; |
51 | ||
52 | my $volid = $mountpoint->{volume}; | |
552e168f | 53 | my $type = $mountpoint->{type}; |
9746c095 | 54 | |
552e168f FG |
55 | # skip dev/bind mps when forced / shared |
56 | if ($type ne 'volume') { | |
57 | if ($force) { | |
58 | warn "-force is deprecated, please use the 'shared' property on individual non-volume mount points instead!\n"; | |
59 | return; | |
60 | } | |
61 | if ($mountpoint->{shared}) { | |
62 | return; | |
63 | } else { | |
64 | die "cannot migrate local $type mount point '$ms'\n"; | |
65 | } | |
9746c095 | 66 | } |
552e168f | 67 | |
6f42807e | 68 | my ($storage, $volname) = PVE::Storage::parse_volume_id($volid, 1) if $volid; |
235dbdf3 | 69 | die "can't determine assigned storage for mount point '$ms'\n" if !$storage; |
6f42807e DM |
70 | |
71 | # check if storage is available on both nodes | |
72 | my $scfg = PVE::Storage::storage_check_node($self->{storecfg}, $storage); | |
73 | PVE::Storage::storage_check_node($self->{storecfg}, $storage, $self->{node}); | |
74 | ||
20ab40f3 FG |
75 | |
76 | if ($scfg->{shared}) { | |
77 | # PVE::Storage::activate_storage checks this for non-shared storages | |
78 | my $plugin = PVE::Storage::Plugin->lookup($scfg->{type}); | |
79 | warn "Used shared storage '$storage' is not online on source node!\n" | |
80 | if !$plugin->check_connection($storage, $scfg); | |
81 | } else { | |
a7cedb73 | 82 | # unless in restart mode because we shut the container down |
235dbdf3 | 83 | die "unable to migrate local mount point '$volid' while CT is running" |
a7cedb73 | 84 | if $running && !$restart; |
20ab40f3 | 85 | } |
6f42807e DM |
86 | |
87 | }); | |
88 | ||
6f42807e DM |
89 | # todo: test if VM uses local resources |
90 | ||
91 | # test ssh connection | |
92 | my $cmd = [ @{$self->{rem_ssh}}, '/bin/true' ]; | |
93 | eval { $self->cmd_quiet($cmd); }; | |
94 | die "Can't connect to destination address using public key\n" if $@; | |
95 | ||
a7cedb73 DC |
96 | # in restart mode, we shutdown the container before migrating |
97 | if ($restart && $running) { | |
98 | my $timeout = $self->{opts}->{timeout} // 180; | |
99 | ||
100 | $self->log('info', "shutdown CT $vmid\n"); | |
101 | ||
b1bad293 | 102 | PVE::LXC::vm_stop($vmid, 0, $timeout); |
a7cedb73 DC |
103 | |
104 | $running = 0; | |
105 | } | |
106 | ||
6f42807e DM |
107 | return $running; |
108 | } | |
109 | ||
110 | sub phase1 { | |
111 | my ($self, $vmid) = @_; | |
112 | ||
113 | $self->log('info', "starting migration of CT $self->{vmid} to node '$self->{node}' ($self->{nodeip})"); | |
114 | ||
115 | my $conf = $self->{vmconf}; | |
116 | $conf->{lock} = 'migrate'; | |
67afe46e | 117 | PVE::LXC::Config->write_config($vmid, $conf); |
6f42807e DM |
118 | |
119 | if ($self->{running}) { | |
120 | $self->log('info', "container is running - using online migration"); | |
121 | } | |
122 | ||
3c5dabe1 | 123 | $self->{volumes} = []; # list of already migrated volumes |
f503617b | 124 | my $volhash = {}; # 'config', 'snapshot' or 'storage' for local volumes |
33deb76c FG |
125 | my $volhash_errors = {}; |
126 | my $abort = 0; | |
127 | ||
128 | my $log_error = sub { | |
129 | my ($msg, $volid) = @_; | |
130 | ||
131 | $volhash_errors->{$volid} = $msg if !defined($volhash_errors->{$volid}); | |
132 | $abort = 1; | |
133 | }; | |
6f42807e | 134 | |
3c5dabe1 FG |
135 | my $test_volid = sub { |
136 | my ($volid, $snapname) = @_; | |
6f42807e | 137 | |
3c5dabe1 FG |
138 | return if !$volid; |
139 | ||
140 | my ($sid, $volname) = PVE::Storage::parse_volume_id($volid); | |
141 | ||
142 | # check if storage is available on both nodes | |
143 | my $scfg = PVE::Storage::storage_check_node($self->{storecfg}, $sid); | |
144 | PVE::Storage::storage_check_node($self->{storecfg}, $sid, $self->{node}); | |
145 | ||
33deb76c FG |
146 | if ($scfg->{shared}) { |
147 | $self->log('info', "volume '$volid' is on shared storage '$sid'") | |
148 | if !$snapname; | |
149 | return; | |
150 | } | |
3c5dabe1 | 151 | |
0aa2d2a2 WB |
152 | $volhash->{$volid}->{ref} = defined($snapname) ? 'snapshot' : 'config'; |
153 | $volhash->{$volid}->{snapshots} = defined($snapname); | |
f503617b | 154 | |
3c5dabe1 FG |
155 | my ($path, $owner) = PVE::Storage::path($self->{storecfg}, $volid); |
156 | ||
33deb76c | 157 | die "owned by other guest (owner = $owner)\n" |
3c5dabe1 | 158 | if !$owner || ($owner != $self->{vmid}); |
9746c095 | 159 | |
3c5dabe1 FG |
160 | if (defined($snapname)) { |
161 | # we cannot migrate shapshots on local storage | |
162 | # exceptions: 'zfspool' | |
163 | if (($scfg->{type} eq 'zfspool')) { | |
3c5dabe1 FG |
164 | return; |
165 | } | |
33deb76c | 166 | die "non-migratable snapshot exists\n"; |
3c5dabe1 FG |
167 | } |
168 | }; | |
169 | ||
170 | my $test_mp = sub { | |
171 | my ($ms, $mountpoint, $snapname) = @_; | |
172 | ||
173 | my $volid = $mountpoint->{volume}; | |
9746c095 FG |
174 | # already checked in prepare |
175 | if ($mountpoint->{type} ne 'volume') { | |
552e168f | 176 | $self->log('info', "ignoring shared '$mountpoint->{type}' mount point '$ms' ('$volid')") |
3c5dabe1 | 177 | if !$snapname; |
9746c095 FG |
178 | return; |
179 | } | |
180 | ||
33deb76c FG |
181 | eval { |
182 | &$test_volid($volid, $snapname); | |
183 | }; | |
6f42807e | 184 | |
33deb76c | 185 | &$log_error($@, $volid) if $@; |
3c5dabe1 FG |
186 | }; |
187 | ||
1c5f78ef | 188 | # first unused / lost volumes owned by this container |
3c5dabe1 FG |
189 | my @sids = PVE::Storage::storage_ids($self->{storecfg}); |
190 | foreach my $storeid (@sids) { | |
191 | my $scfg = PVE::Storage::storage_config($self->{storecfg}, $storeid); | |
192 | next if $scfg->{shared}; | |
193 | next if !PVE::Storage::storage_check_enabled($self->{storecfg}, $storeid, undef, 1); | |
194 | ||
195 | # get list from PVE::Storage (for unused volumes) | |
196 | my $dl = PVE::Storage::vdisk_list($self->{storecfg}, $storeid, $vmid); | |
197 | ||
198 | next if @{$dl->{$storeid}} == 0; | |
199 | ||
200 | # check if storage is available on target node | |
201 | PVE::Storage::storage_check_node($self->{storecfg}, $storeid, $self->{node}); | |
202 | ||
203 | PVE::Storage::foreach_volid($dl, sub { | |
204 | my ($volid, $sid, $volname) = @_; | |
205 | ||
0aa2d2a2 | 206 | $volhash->{$volid}->{ref} = 'storage'; |
3c5dabe1 FG |
207 | }); |
208 | } | |
209 | ||
1c5f78ef FG |
210 | # then all volumes referenced in snapshots |
211 | foreach my $snapname (keys %{$conf->{snapshots}}) { | |
212 | &$test_volid($conf->{snapshots}->{$snapname}->{'vmstate'}, 0, undef) | |
213 | if defined($conf->{snapshots}->{$snapname}->{'vmstate'}); | |
015740e6 | 214 | PVE::LXC::Config->foreach_volume($conf->{snapshots}->{$snapname}, $test_mp, $snapname); |
1c5f78ef FG |
215 | } |
216 | ||
217 | # finally all currently used volumes | |
015740e6 | 218 | PVE::LXC::Config->foreach_volume($conf, $test_mp); |
1c5f78ef FG |
219 | |
220 | ||
3c5dabe1 FG |
221 | # additional checks for local storage |
222 | foreach my $volid (keys %$volhash) { | |
33deb76c FG |
223 | eval { |
224 | my ($sid, $volname) = PVE::Storage::parse_volume_id($volid); | |
225 | my $scfg = PVE::Storage::storage_config($self->{storecfg}, $sid); | |
3c5dabe1 | 226 | |
33deb76c FG |
227 | my $migratable = ($scfg->{type} eq 'dir') || ($scfg->{type} eq 'zfspool') || |
228 | ($scfg->{type} eq 'lvmthin') || ($scfg->{type} eq 'lvm'); | |
3c5dabe1 | 229 | |
33deb76c FG |
230 | die "storage type '$scfg->{type}' not supported\n" |
231 | if !$migratable; | |
3c5dabe1 | 232 | |
33deb76c FG |
233 | # image is a linked clone on local storage, se we can't migrate. |
234 | if (my $basename = (PVE::Storage::parse_volname($self->{storecfg}, $volid))[3]) { | |
235 | die "clone of '$basename'"; | |
236 | } | |
237 | }; | |
238 | &$log_error($@, $volid) if $@; | |
3c5dabe1 FG |
239 | } |
240 | ||
f503617b | 241 | foreach my $volid (sort keys %$volhash) { |
0aa2d2a2 WB |
242 | my $ref = $volhash->{$volid}->{ref}; |
243 | if ($ref eq 'storage') { | |
f503617b | 244 | $self->log('info', "found local volume '$volid' (via storage)\n"); |
0aa2d2a2 | 245 | } elsif ($ref eq 'config') { |
f503617b | 246 | $self->log('info', "found local volume '$volid' (in current VM config)\n"); |
0aa2d2a2 | 247 | } elsif ($ref eq 'snapshot') { |
f503617b FG |
248 | $self->log('info', "found local volume '$volid' (referenced by snapshot(s))\n"); |
249 | } else { | |
250 | $self->log('info', "found local volume '$volid'\n"); | |
251 | } | |
252 | } | |
253 | ||
33deb76c FG |
254 | foreach my $volid (sort keys %$volhash_errors) { |
255 | $self->log('warn', "can't migrate local volume '$volid': $volhash_errors->{$volid}"); | |
256 | } | |
257 | ||
258 | if ($abort) { | |
259 | die "can't migrate CT - check log\n"; | |
260 | } | |
261 | ||
3efa5e3d DM |
262 | my $rep_volumes; |
263 | ||
264 | my $rep_cfg = PVE::ReplicationConfig->new(); | |
265 | ||
266 | if (my $jobcfg = $rep_cfg->find_local_replication_job($vmid, $self->{node})) { | |
267 | die "can't live migrate VM with replicated volumes\n" if $self->{running}; | |
268 | my $start_time = time(); | |
269 | my $logfunc = sub { my ($msg) = @_; $self->log('info', $msg); }; | |
270 | $rep_volumes = PVE::Replication::run_replication( | |
271 | 'PVE::LXC::Config', $jobcfg, $start_time, $start_time, $logfunc); | |
272 | } | |
273 | ||
1159329a | 274 | my $opts = $self->{opts}; |
3c5dabe1 | 275 | foreach my $volid (keys %$volhash) { |
3efa5e3d | 276 | next if $rep_volumes->{$volid}; |
3c5dabe1 FG |
277 | my ($sid, $volname) = PVE::Storage::parse_volume_id($volid); |
278 | push @{$self->{volumes}}, $volid; | |
5aa2a703 | 279 | my $bwlimit = PVE::Storage::get_bandwidth_limit('migration', [$sid], $opts->{bwlimit}); |
1159329a SI |
280 | # JSONSchema and get_bandwidth_limit use kbps - storage_migrate bps |
281 | $bwlimit = $bwlimit * 1024 if defined($bwlimit); | |
282 | ||
1d26bb86 | 283 | my $storage_migrate_opts = { |
a799df7a | 284 | 'ratelimit_bps' => $bwlimit, |
1d26bb86 FE |
285 | 'insecure' => $opts->{migration_type} eq 'insecure', |
286 | 'with_snapshots' => $volhash->{$volid}->{snapshots}, | |
287 | }; | |
288 | ||
d79b051a FE |
289 | my $logfunc = sub { $self->log('info', $_[0]); }; |
290 | eval { | |
291 | PVE::Storage::storage_migrate($self->{storecfg}, $volid, $self->{ssh_info}, | |
292 | $sid, $storage_migrate_opts, $logfunc); | |
293 | }; | |
294 | if (my $err = $@) { | |
295 | die "storage migration for '$volid' to storage '$sid' failed - $err\n"; | |
296 | } | |
1e5f5da7 FE |
297 | |
298 | eval { PVE::Storage::deactivate_volumes($self->{storecfg}, [$volid]); }; | |
299 | if (my $err = $@) { | |
300 | $self->log('warn', $err); | |
301 | } | |
3c5dabe1 | 302 | } |
6f42807e | 303 | |
6f42807e DM |
304 | if ($self->{running}) { |
305 | die "implement me"; | |
306 | } | |
307 | ||
308 | # make sure everything on (shared) storage is unmounted | |
309 | # Note: we must be 100% sure, else we get data corruption because | |
310 | # non-shared file system could be mounted twice (on shared storage) | |
311 | ||
312 | PVE::LXC::umount_all($vmid, $self->{storecfg}, $conf); | |
313 | ||
c9bc5018 | 314 | #to be sure there are no active volumes |
d250604f | 315 | my $vollist = PVE::LXC::Config->get_vm_volumes($conf); |
c9bc5018 WL |
316 | PVE::Storage::deactivate_volumes($self->{storecfg}, $vollist); |
317 | ||
86df609a | 318 | # transfer replication state before moving config |
522d3569 | 319 | $self->transfer_replication_state() if $rep_volumes; |
86df609a | 320 | PVE::LXC::Config->move_config_to_node($vmid, $self->{node}); |
1d1c1b4f | 321 | $self->{conf_migrated} = 1; |
522d3569 | 322 | $self->switch_replication_job_target() if $rep_volumes; |
6f42807e DM |
323 | } |
324 | ||
325 | sub phase1_cleanup { | |
326 | my ($self, $vmid, $err) = @_; | |
327 | ||
328 | $self->log('info', "aborting phase 1 - cleanup resources"); | |
329 | ||
330 | if ($self->{volumes}) { | |
331 | foreach my $volid (@{$self->{volumes}}) { | |
332 | $self->log('err', "found stale volume copy '$volid' on node '$self->{node}'"); | |
333 | # fixme: try to remove ? | |
334 | } | |
335 | } | |
336 | } | |
337 | ||
338 | sub phase3 { | |
339 | my ($self, $vmid) = @_; | |
340 | ||
341 | my $volids = $self->{volumes}; | |
342 | ||
343 | # destroy local copies | |
344 | foreach my $volid (@$volids) { | |
8fdd1fc8 DM |
345 | eval { PVE::Storage::vdisk_free($self->{storecfg}, $volid); }; |
346 | if (my $err = $@) { | |
347 | $self->log('err', "removing local copy of '$volid' failed - $err"); | |
348 | $self->{errors} = 1; | |
349 | last if $err =~ /^interrupted by signal$/; | |
6f42807e DM |
350 | } |
351 | } | |
352 | } | |
353 | ||
354 | sub final_cleanup { | |
355 | my ($self, $vmid) = @_; | |
356 | ||
357 | $self->log('info', "start final cleanup"); | |
358 | ||
1d1c1b4f | 359 | if (!$self->{conf_migrated}) { |
dd3bcfb2 | 360 | eval { PVE::LXC::Config->remove_lock($vmid, 'migrate'); }; |
1d1c1b4f WL |
361 | if (my $err = $@) { |
362 | $self->log('err', $err); | |
363 | } | |
6725e93c AA |
364 | # in restart mode, we start the container on the source node |
365 | # on migration error | |
366 | if ($self->{opts}->{restart} && $self->{was_running}) { | |
367 | $self->log('info', "start container on source node"); | |
368 | my $skiplock = 1; | |
369 | PVE::LXC::vm_start($vmid, $self->{vmconf}, $skiplock); | |
370 | } | |
1d1c1b4f WL |
371 | } else { |
372 | my $cmd = [ @{$self->{rem_ssh}}, 'pct', 'unlock', $vmid ]; | |
ee8d9207 FG |
373 | $self->cmd_logerr($cmd, errmsg => "failed to clear migrate lock"); |
374 | ||
375 | # in restart mode, we start the container on the target node | |
376 | # after migration | |
377 | if ($self->{opts}->{restart} && $self->{was_running}) { | |
378 | $self->log('info', "start container on target node"); | |
379 | my $cmd = [ @{$self->{rem_ssh}}, 'pct', 'start', $vmid]; | |
380 | $self->cmd($cmd); | |
381 | } | |
6f42807e | 382 | } |
a7cedb73 | 383 | |
6f42807e DM |
384 | } |
385 | ||
386 | 1; |