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git.proxmox.com Git - pve-container.git/blob - src/PVE/LXC/Migrate.pm
fbcb8c772b81fe7b6b753237627061a2a4c8230a
1 package PVE
::LXC
::Migrate
;
5 use PVE
::AbstractMigrate
;
7 use File
::Copy
; # fixme: remove
14 use base
qw(PVE::AbstractMigrate);
17 my ($self, $vmid, $code, @param) = @_;
19 return PVE
::LXC
::Config-
>lock_config($vmid, $code, @param);
23 my ($self, $vmid) = @_;
25 my $online = $self->{opts
}->{online
};
27 $self->{storecfg
} = PVE
::Storage
::config
();
30 my $conf = $self->{vmconf
} = PVE
::LXC
::Config-
>load_config($vmid);
32 PVE
::LXC
::Config-
>check_lock($conf);
35 if (PVE
::LXC
::check_running
($vmid)) {
36 die "lxc live migration is currently not implemented\n";
38 die "can't migrate running container without --online\n" if !$online;
42 my $force = $self->{opts
}->{force
} // 0;
43 my $need_activate = [];
45 PVE
::LXC
::Config-
>foreach_mountpoint($conf, sub {
46 my ($ms, $mountpoint) = @_;
48 my $volid = $mountpoint->{volume
};
50 # skip dev/bind mps when forced
51 if ($mountpoint->{type
} ne 'volume' && $force) {
54 my ($storage, $volname) = PVE
::Storage
::parse_volume_id
($volid, 1) if $volid;
55 die "can't determine assigned storage for mountpoint '$ms'\n" if !$storage;
57 # check if storage is available on both nodes
58 my $scfg = PVE
::Storage
::storage_check_node
($self->{storecfg
}, $storage);
59 PVE
::Storage
::storage_check_node
($self->{storecfg
}, $storage, $self->{node
});
62 if ($scfg->{shared
}) {
63 # PVE::Storage::activate_storage checks this for non-shared storages
64 my $plugin = PVE
::Storage
::Plugin-
>lookup($scfg->{type
});
65 warn "Used shared storage '$storage' is not online on source node!\n"
66 if !$plugin->check_connection($storage, $scfg);
68 # only activate if not shared
69 push @$need_activate, $volid;
71 die "unable to migrate local mountpoint '$volid' while CT is running"
77 PVE
::Storage
::activate_volumes
($self->{storecfg
}, $need_activate);
79 # todo: test if VM uses local resources
82 my $cmd = [ @{$self->{rem_ssh
}}, '/bin/true' ];
83 eval { $self->cmd_quiet($cmd); };
84 die "Can't connect to destination address using public key\n" if $@;
90 my ($self, $vmid) = @_;
92 $self->log('info', "starting migration of CT $self->{vmid} to node '$self->{node}' ($self->{nodeip})");
94 my $conf = $self->{vmconf
};
95 $conf->{lock} = 'migrate';
96 PVE
::LXC
::Config-
>write_config($vmid, $conf);
98 if ($self->{running
}) {
99 $self->log('info', "container is running - using online migration");
102 $self->{volumes
} = []; # list of already migrated volumes
103 my $volhash = {}; # 1 for local volumes
105 my $test_volid = sub {
106 my ($volid, $snapname) = @_;
110 my ($sid, $volname) = PVE
::Storage
::parse_volume_id
($volid);
112 # check if storage is available on both nodes
113 my $scfg = PVE
::Storage
::storage_check_node
($self->{storecfg
}, $sid);
114 PVE
::Storage
::storage_check_node
($self->{storecfg
}, $sid, $self->{node
});
116 return if $scfg->{shared
};
118 my ($path, $owner) = PVE
::Storage
::path
($self->{storecfg
}, $volid);
120 die "can't migrate volume '$volid' - owned by other guest (owner = $owner)\n"
121 if !$owner || ($owner != $self->{vmid
});
123 if (defined($snapname)) {
124 # we cannot migrate shapshots on local storage
125 # exceptions: 'zfspool'
126 if (($scfg->{type
} eq 'zfspool')) {
127 $volhash->{$volid} = 1;
130 die "can't migrate snapshot of local volume '$volid'\n";
132 $volhash->{$volid} = 1;
137 my ($ms, $mountpoint, $snapname) = @_;
139 my $volid = $mountpoint->{volume
};
140 # already checked in prepare
141 if ($mountpoint->{type
} ne 'volume') {
142 $self->log('info', "ignoring mountpoint '$ms' ('$volid') of type " .
143 "'$mountpoint->{type}', migration is forced.")
148 my ($storage, $volname) = PVE
::Storage
::parse_volume_id
($volid);
149 my $scfg = PVE
::Storage
::storage_check_node
($self->{storecfg
}, $storage);
151 if (!$scfg->{shared
}) {
152 $self->log('info', "copy mountpoint '$ms' ($volid) to node ' $self->{node}'")
154 $volhash->{$volid} = 1;
156 $self->log('info', "mountpoint '$ms' is on shared storage '$storage'")
159 &$test_volid($volid, $snapname);
162 # first all currently used volumes
163 PVE
::LXC
::Config-
>foreach_mountpoint($conf, $test_mp);
165 # then all volumes referenced in snapshots
166 foreach my $snapname (keys %{$conf->{snapshots
}}) {
167 &$test_volid($conf->{snapshots
}->{$snapname}->{'vmstate'}, 0, undef)
168 if defined($conf->{snapshots
}->{$snapname}->{'vmstate'});
169 PVE
::LXC
::Config-
>foreach_mountpoint($conf->{snapshots
}->{$snapname}, $test_mp, $snapname);
172 # finally unused / lost volumes owned by this container
173 my @sids = PVE
::Storage
::storage_ids
($self->{storecfg
});
174 foreach my $storeid (@sids) {
175 my $scfg = PVE
::Storage
::storage_config
($self->{storecfg
}, $storeid);
176 next if $scfg->{shared
};
177 next if !PVE
::Storage
::storage_check_enabled
($self->{storecfg
}, $storeid, undef, 1);
179 # get list from PVE::Storage (for unused volumes)
180 my $dl = PVE
::Storage
::vdisk_list
($self->{storecfg
}, $storeid, $vmid);
182 next if @{$dl->{$storeid}} == 0;
184 # check if storage is available on target node
185 PVE
::Storage
::storage_check_node
($self->{storecfg
}, $storeid, $self->{node
});
187 PVE
::Storage
::foreach_volid
($dl, sub {
188 my ($volid, $sid, $volname) = @_;
190 $self->log('info', "copy volume '$volid' to node '$self->{node}'")
191 if !$volhash->{$volid};
192 $volhash->{$volid} = 1;
196 # additional checks for local storage
197 foreach my $volid (keys %$volhash) {
198 my ($sid, $volname) = PVE
::Storage
::parse_volume_id
($volid);
199 my $scfg = PVE
::Storage
::storage_config
($self->{storecfg
}, $sid);
201 my $migratable = ($scfg->{type
} eq 'dir') || ($scfg->{type
} eq 'zfspool') ||
202 ($scfg->{type
} eq 'lvmthin') || ($scfg->{type
} eq 'lvm');
204 die "can't migrate '$volid' - storage type '$scfg->{type}' not supported\n"
207 # image is a linked clone on local storage, se we can't migrate.
208 if (my $basename = (PVE
::Storage
::parse_volname
($self->{storecfg
}, $volid))[3]) {
209 die "can't migrate '$volid' as it's a clone of '$basename'";
213 foreach my $volid (keys %$volhash) {
214 my ($sid, $volname) = PVE
::Storage
::parse_volume_id
($volid);
215 push @{$self->{volumes
}}, $volid;
216 PVE
::Storage
::storage_migrate
($self->{storecfg
}, $volid, $self->{nodeip
}, $sid);
219 my $conffile = PVE
::LXC
::Config-
>config_file($vmid);
220 my $newconffile = PVE
::LXC
::Config-
>config_file($vmid, $self->{node
});
222 if ($self->{running
}) {
226 # make sure everything on (shared) storage is unmounted
227 # Note: we must be 100% sure, else we get data corruption because
228 # non-shared file system could be mounted twice (on shared storage)
230 PVE
::LXC
::umount_all
($vmid, $self->{storecfg
}, $conf);
232 #to be sure there are no active volumes
233 my $vollist = PVE
::LXC
::Config-
>get_vm_volumes($conf);
234 PVE
::Storage
::deactivate_volumes
($self->{storecfg
}, $vollist);
237 die "Failed to move config to node '$self->{node}' - rename failed: $!\n"
238 if !rename($conffile, $newconffile);
240 $self->{conf_migrated
} = 1;
244 my ($self, $vmid, $err) = @_;
246 $self->log('info', "aborting phase 1 - cleanup resources");
248 if ($self->{volumes
}) {
249 foreach my $volid (@{$self->{volumes
}}) {
250 $self->log('err', "found stale volume copy '$volid' on node '$self->{node}'");
251 # fixme: try to remove ?
257 my ($self, $vmid) = @_;
259 my $volids = $self->{volumes
};
261 # destroy local copies
262 foreach my $volid (@$volids) {
263 eval { PVE
::Storage
::vdisk_free
($self->{storecfg
}, $volid); };
265 $self->log('err', "removing local copy of '$volid' failed - $err");
267 last if $err =~ /^interrupted by signal$/;
273 my ($self, $vmid) = @_;
275 $self->log('info', "start final cleanup");
277 if (!$self->{conf_migrated
}) {
278 my $conf = $self->{vmconf
};
279 delete $conf->{lock};
281 eval { PVE
::LXC
::Config-
>write_config($vmid, $conf); };
283 $self->log('err', $err);
286 my $cmd = [ @{$self->{rem_ssh
}}, 'pct', 'unlock', $vmid ];
287 $self->cmd_logerr($cmd, errmsg
=> "failed to clear migrate lock");