[pve-container.git] / src / PVE / VZDump / LXC.pm

package PVE::VZDump::LXC;

use strict;
use warnings;

use File::Basename;
use File::Path;
use POSIX qw(strftime);

use PVE::Cluster qw(cfs_read_file);
use PVE::INotify;
use PVE::LXC::Config;
use PVE::LXC;
use PVE::Storage;
use PVE::Tools;
use PVE::VZDump;

use base qw (PVE::VZDump::Plugin);

my $default_mount_point = "/mnt/vzsnap0";

my $rsync_vm = sub {
    my ($self, $task, $to, $text, $first) = @_;

    my $disks = $task->{disks};
    my $from = $disks->[0]->{dir};
    $self->loginfo ("starting $text sync $from to $to");

    my $opts = $self->{vzdump}->{opts};

    my @xattr = $task->{no_xattrs} ? () : ('-X', '-A');

    my $rsync = ['rsync', '--stats', '-h', @xattr, '--numeric-ids',
                 '-aH', '--delete', '--no-whole-file',
                 ($first ? '--sparse' : '--inplace'),
                 '--one-file-system', '--relative'];
    push @$rsync, "--bwlimit=$opts->{bwlimit}" if $opts->{bwlimit};
    push @$rsync, map { "--exclude=$_" } @{$self->{vzdump}->{findexcl}};
    push @$rsync, map { "--exclude=$_" } @{$task->{exclude_dirs}};

    # See the rsync(1) manpage for --relative in conjunction with /./ in paths.
    # This is the only way to have exclude-dirs work together with the
    # --one-file-system option.
    # This way we can pass multiple source paths and tell rsync which directory
    # they're supposed to be relative to.
    # Otherwise with eg. using multiple rsync commands means the --exclude
    # directives need to be modified for every command as they are meant to be
    # relative to the rootdir, while rsync treats them as relative to the
    # source dir.
    foreach my $disk (@$disks) {
	push @$rsync, "$from/.$disk->{mp}";
    }

    my $transferred = '';
    my $logfunc = sub {
	return if $_[0] !~ /^Total transferred file size: (.+)$/;
	$transferred = $1;
    };

    my $starttime = time();
    PVE::Tools::run_command([@$rsync, $to], logfunc => $logfunc);
    my $delay = time () - $starttime;

    $self->loginfo ("$text sync finished - transferred $transferred in ${delay}s");
};

sub new {
    my ($class, $vzdump) = @_;

    PVE::VZDump::check_bin('lxc-stop');
    PVE::VZDump::check_bin('lxc-start');

    my $self = bless {};

    $self->{vzdump} = $vzdump;
    $self->{storecfg} = PVE::Storage::config();

    $self->{vmlist} = PVE::LXC::config_list();

    return $self;
}

sub type {
    return 'lxc';
}

sub vm_status {
    my ($self, $vmid) = @_;

    my $running = PVE::LXC::check_running($vmid) ? 1 : 0;

    return wantarray ? ($running, $running ? 'running' : 'stopped') : $running;
}

my $check_mountpoint_empty = sub {
    my ($mountpoint) = @_;

    die "mount point '$mountpoint' is not a directory\n" if ! -d $mountpoint;

    PVE::Tools::dir_glob_foreach($mountpoint, qr/.*/, sub {
	my $entry = shift;
	return if $entry eq '.' || $entry eq '..';
	die "mount point '$mountpoint' not empty\n";
    });
};

sub prepare {
    my ($self, $task, $vmid, $mode) = @_;

    my $conf = $self->{vmlist}->{$vmid} = PVE::LXC::Config->load_config($vmid);
    my $storage_cfg = $self->{storecfg};

    $self->loginfo("CT Name: $conf->{hostname}")
	if defined($conf->{hostname});

    my $running = PVE::LXC::check_running($vmid);

    my $disks = $task->{disks} = [];
    my $exclude_dirs = $task->{exclude_dirs} = [];

    $task->{hostname} = $conf->{'hostname'} || "CT$vmid";

    my ($id_map, $rootuid, $rootgid) = PVE::LXC::parse_id_maps($conf);
    $task->{userns_cmd} = PVE::LXC::userns_command($id_map);
    $task->{rootuid} = $rootuid;
    $task->{rootgid} = $rootgid;

    my $volids = $task->{volids} = [];

    my $backup_volumes = PVE::LXC::Config->get_backup_volumes($conf);

    for my $volume (@{$backup_volumes}) {
	my $name = $volume->{key};
	my $included = $volume->{included};
	my $volume_config = $volume->{volume_config};

	my $volid = $volume_config->{volume};
	my $mount = $volume_config->{mp};

	next if !$volid || !$mount;

	if (!$included) {
	    my $type = $volume_config->{type};
	    push @$exclude_dirs, $mount;
	    $self->loginfo("excluding $type mount point $name ('$mount') from backup ($volume->{reason})");
	    next;
	}

	$volume_config->{name} = $name;

	# immutable raw base images need RO mount
	if ($conf->{template} && !defined($volume_config->{ro})) {
	    $volume_config->{ro} = 1;
	}

	$self->loginfo("including mount point $name ('$mount') in backup");
	push @$disks, $volume_config;
	push @$volids, $volid if $included;
    }

    if ($mode eq 'snapshot') {
	if (!PVE::LXC::Config->has_feature('snapshot', $conf, $storage_cfg, undef, undef, 1)) {
	    die "mode failure - some volumes do not support snapshots\n";
	}


	if ($conf->{snapshots} && $conf->{snapshots}->{vzdump}) {
	    $self->loginfo("found old vzdump snapshot (force removal)");
	    PVE::LXC::Config->lock_config($vmid, sub {
		$self->unlock_vm($vmid);
		PVE::LXC::Config->snapshot_delete($vmid, 'vzdump', 1);
		$self->lock_vm($vmid);
	    });
	}

	my $rootdir = $default_mount_point;
	mkpath $rootdir;
	&$check_mountpoint_empty($rootdir);

	# set snapshot_count (freezes CT if snapshot_count > 1)
	$task->{snapshot_count} = scalar(@$volids);
    } elsif ($mode eq 'stop') {
	my $rootdir = $default_mount_point;
	mkpath $rootdir;
	&$check_mountpoint_empty($rootdir);
    } elsif ($mode eq 'suspend') {
	my $pid = PVE::LXC::find_lxc_pid($vmid);
	foreach my $disk (@$disks) {
	    $disk->{dir} = "/proc/$pid/root$disk->{mp}";
	}
	$task->{snapdir} = $task->{tmpdir};
    } else {
	unlock_vm($self, $vmid);
	die "unknown mode '$mode'\n"; # should not happen
    }

    if ($mode ne 'suspend') {
	# If we perform mount operations, let's unshare the mount namespace
	# to not influence the running host.
	PVE::Tools::unshare(PVE::Tools::CLONE_NEWNS);
	PVE::Tools::run_command(['mount', '--make-rslave', '/']);
    }
}

sub lock_vm {
    my ($self, $vmid) = @_;

    PVE::LXC::Config->set_lock($vmid, 'backup');
}

sub unlock_vm {
    my ($self, $vmid) = @_;

    PVE::LXC::Config->remove_lock($vmid, 'backup')
}

sub snapshot {
    my ($self, $task, $vmid) = @_;

    $self->loginfo("create storage snapshot 'vzdump'");

    # todo: freeze/unfreeze if we have more than one volid
    PVE::LXC::Config->lock_config($vmid, sub {
	$self->unlock_vm($vmid);
	PVE::LXC::Config->snapshot_create($vmid, 'vzdump', 0, "vzdump backup snapshot");
	$self->lock_vm($vmid);
    });
    $task->{cleanup}->{remove_snapshot} = 1;

    # reload config
    my $conf = $self->{vmlist}->{$vmid} = PVE::LXC::Config->load_config($vmid);
    die "unable to read vzdump snapshot config - internal error"
	if !($conf->{snapshots} && $conf->{snapshots}->{vzdump});

    my $disks = $task->{disks};
    my $volids = $task->{volids};

    my $rootdir = $default_mount_point;
    my $storage_cfg = $self->{storecfg};

    PVE::Storage::activate_volumes($storage_cfg, $volids, 'vzdump');
    foreach my $disk (@$disks) {
	$disk->{dir} = "${rootdir}$disk->{mp}";
	PVE::LXC::mountpoint_mount($disk, $rootdir, $storage_cfg, 'vzdump', $task->{rootuid}, $task->{rootgid});
    }

    $task->{snapdir} = $rootdir;
}

sub copy_data_phase1 {
    my ($self, $task) = @_;

    if (my $mntinfo = PVE::VZDump::get_mount_info($task->{snapdir})) {
	if ($mntinfo->{fstype} =~ /^nfs4?/) {
	    $self->loginfo(
		 "temporary directory is on NFS, disabling xattr and acl"
		." support, consider configuring a local tmpdir via"
		." /etc/vzdump.conf\n");
	    $task->{no_xattrs} = 1;
	}
    }

    $self->$rsync_vm($task, $task->{snapdir}, "first", 1);
}

sub copy_data_phase2 {
    my ($self, $task) = @_;

    $self->$rsync_vm($task, $task->{snapdir}, "final", 0);
}

sub stop_vm {
    my ($self, $task, $vmid) = @_;

    my $opts = $self->{vzdump}->{opts};
    my $timeout = $opts->{stopwait} * 60;

    PVE::LXC::vm_stop($vmid, 0, $timeout);
}

sub start_vm {
    my ($self, $task, $vmid) = @_;

    my $conf = PVE::LXC::Config->load_config($vmid);
    PVE::LXC::vm_start($vmid, $conf);
}

sub suspend_vm {
    my ($self, $task, $vmid) = @_;

    PVE::LXC::freeze($vmid);
}

sub resume_vm {
    my ($self, $task, $vmid) = @_;

    PVE::LXC::thaw($vmid);
}

sub assemble {
    my ($self, $task, $vmid) = @_;

    my $opts = $self->{vzdump}->{opts};

    my $conf = PVE::LXC::Config->load_config($vmid);
    delete $conf->{lock};
    delete $conf->{snapshots};
    delete $conf->{parent};
    delete $conf->{pending};

    my $tmpdir = $task->{tmpdir};

    mkpath "$tmpdir/etc/vzdump/";

    PVE::Tools::file_set_contents("$tmpdir/etc/vzdump/pct.conf", PVE::LXC::Config::write_pct_config("/lxc/$vmid.conf", $conf));

    my $firewall ="/etc/pve/firewall/$vmid.fw";
    my $fwconftmp = "$tmpdir/etc/vzdump/pct.fw";

    if ($self->{vzdump}->{opts}->{pbs}) {
	# fixme: do not store pct.conf and fw.conf into $tmpdir
	if (-e  $firewall) {
	    PVE::Tools::file_copy($firewall, $fwconftmp);
	}
    } else {
	if (-e  $firewall) {
	    PVE::Tools::file_copy($firewall, $fwconftmp);
	} else {
	    PVE::Tools::file_set_contents($fwconftmp, '');
	}
	$task->{fw} = 1;
    }
}

sub archive {
    my ($self, $task, $vmid, $filename, $comp) = @_;

    my $disks = $task->{disks};
    my @sources;

    if ($task->{mode} eq 'stop') {
	my $storage_cfg = $self->{storecfg};

	PVE::Storage::activate_volumes($storage_cfg, $task->{volids});

	my $rootdir = $default_mount_point;
	foreach my $disk (@$disks) {
	    $disk->{dir} = "${rootdir}$disk->{mp}";
	    PVE::LXC::mountpoint_mount($disk, $rootdir, $storage_cfg, undef, $task->{rootuid}, $task->{rootgid});
	    # add every enabled mountpoint (since we use --one-file-system)
	    # mp already starts with a / so we only need to add the dot
	    push @sources, ".$disk->{mp}";
	}
	$task->{snapdir} = $rootdir;
    } elsif ($task->{mode} eq 'snapshot') {
	# mounting the vzdump snapshots and setting $snapdir is already done,
	# but we need to include all mountpoints here!
	foreach my $disk (@$disks) {
	    push @sources, ".$disk->{mp}";
	}
    } else {
	# the data was rsynced to a temporary location, only use '.' to avoid
	# having mountpoints duplicated
	push @sources, '.';
    }

    my $opts = $self->{vzdump}->{opts};
    my $snapdir = $task->{snapdir};
    my $tmpdir = $task->{tmpdir};

    my $userns_cmd = $task->{userns_cmd};

    if ($self->{vzdump}->{opts}->{pbs}) {

	my $param = [];
	push @$param, "pct.conf:$tmpdir/etc/vzdump/pct.conf";

	my $fw_conf = "$tmpdir/etc/vzdump/pct.fw";
	if (-f $fw_conf) {
	    push @$param, "fw.conf:$fw_conf";
	}

	my $rootdir = $snapdir;
	push @$param, "root.pxar:$rootdir";

	foreach my $disk (@sources) {
	    push @$param, '--include-dev', "$snapdir/$disk";
	}

	push @$param, '--skip-lost-and-found' if $userns_cmd;

	push @$param, '--backup-type', 'ct';
	push @$param, '--backup-id', $vmid;
	push @$param, '--backup-time', $task->{backup_time};

	my @storage = ($opts->{scfg}, $opts->{storage});

	my $logfunc = sub { my $line = shift; $self->loginfo($line) };
	PVE::Storage::PBSPlugin::run_raw_client_cmd(@storage, 'backup', $param,
	    logfunc => $logfunc, userns_cmd => $userns_cmd);

	# FIXME: move to a pve-common helper, storage has a similar one
	my $time_iso8601 = strftime('%FT%TZ', gmtime($task->{backup_time}));
	my $snapshot_id = "ct/$vmid/$time_iso8601";
	my $res = eval { PVE::Storage::PBSPlugin::run_client_cmd(@storage, 'files', [$snapshot_id]) } // [];
	$task->{size} = 0;
	$task->{size} += $_->{size} for @$res;

    } else {

	my $tar = [@$userns_cmd, 'tar', 'cpf', '-', '--totals',
		   @PVE::Storage::Plugin::COMMON_TAR_FLAGS,
		   '--one-file-system', '--warning=no-file-ignored'];

	# note: --remove-files does not work because we do not
	# backup all files (filters). tar complains:
	# Cannot rmdir: Directory not empty
	# we disable this optimization for now
	#if ($snapdir eq $task->{tmpdir} && $snapdir =~ m|^$opts->{dumpdir}/|) {
	#       push @$tar, "--remove-files"; # try to save space
	#}

	# The directory parameter can give an alternative directory as source.
	# the second parameter gives the structure in the tar.
	push @$tar, "--directory=$tmpdir", './etc/vzdump/pct.conf';
	push @$tar, "./etc/vzdump/pct.fw" if $task->{fw};
	push @$tar, "--directory=$snapdir";
	push @$tar, '--no-anchored', '--exclude=lost+found' if $userns_cmd;
	push @$tar, '--anchored';
	push @$tar, map { "--exclude=.$_" } @{$self->{vzdump}->{findexcl}};

	push @$tar, @sources;

	my $cmd = [ $tar ];

	my $bwl = $opts->{bwlimit}*1024; # bandwidth limit for cstream
	push @$cmd, [ 'cstream', '-t', $bwl ] if $opts->{bwlimit};
	push @$cmd, [ split(/\s+/, $comp) ] if $comp;

	if ($opts->{stdout}) {
	    $self->cmd($cmd, output => ">&" . fileno($opts->{stdout}));
	} else {
	    push @{$cmd->[-1]}, \(">" . PVE::Tools::shellquote($filename));
	    $self->cmd($cmd);
        }
    }
}

sub cleanup {
    my ($self, $task, $vmid) = @_;

    my $conf = PVE::LXC::Config->load_config($vmid);

    if ($task->{mode} ne 'suspend') {
	my $rootdir = $default_mount_point;
	my $disks = $task->{disks};
	foreach my $disk (reverse @$disks) {
	    PVE::Tools::run_command(['umount', '-l', '-d', $disk->{dir}]) if $disk->{dir};
	}
    }

    if ($task->{cleanup}->{remove_snapshot}) {
	$self->loginfo("cleanup temporary 'vzdump' snapshot");
	PVE::LXC::Config->snapshot_delete($vmid, 'vzdump', 0);
    }
}

1;
Commit	Line	Data
d14a9a1b DM	1	package PVE::VZDump::LXC;
	2
	3	use strict;
	4	use warnings;
8ebb49ee	5
d14a9a1b	6	use File::Basename;
8ebb49ee	7	use File::Path;
2862bbe5	8	use POSIX qw(strftime);
8ebb49ee	9
d14a9a1b	10	use PVE::Cluster qw(cfs_read_file);
8ebb49ee	11	use PVE::INotify;
86ee2a21	12	use PVE::LXC::Config;
8ebb49ee TL	13	use PVE::LXC;
8ebb49ee TL	14	use PVE::Storage;
514b5f82	15	use PVE::Tools;
8ebb49ee	16	use PVE::VZDump;
d14a9a1b DM	17
	18	use base qw (PVE::VZDump::Plugin);
	19
4ca61ce8 DM	20	my $default_mount_point = "/mnt/vzsnap0";
4ca61ce8 DM	21
d14a9a1b	22	my $rsync_vm = sub {
50ee6ffe	23	my ($self, $task, $to, $text, $first) = @_;
d14a9a1b	24
59a999af	25	my $disks = $task->{disks};
5582b0c3	26	my $from = $disks->[0]->{dir};
d14a9a1b DM	27	$self->loginfo ("starting $text sync $from to $to");
d14a9a1b DM	28
d14a9a1b DM	29	my $opts = $self->{vzdump}->{opts};
d14a9a1b DM	30
9c9a3b8c WB	31	my @xattr = $task->{no_xattrs} ? () : ('-X', '-A');
9c9a3b8c WB	32
5582b0c3	33	my $rsync = ['rsync', '--stats', '-h', @xattr, '--numeric-ids',
50ee6ffe WB	34	'-aH', '--delete', '--no-whole-file',
50ee6ffe WB	35	($first ? '--sparse' : '--inplace'),
bd8e1739 WB	36	'--one-file-system', '--relative'];
	37	push @$rsync, "--bwlimit=$opts->{bwlimit}" if $opts->{bwlimit};
	38	push @$rsync, map { "--exclude=$_" } @{$self->{vzdump}->{findexcl}};
	39	push @$rsync, map { "--exclude=$_" } @{$task->{exclude_dirs}};
d14a9a1b	40
5a8a3087 WB	41	# See the rsync(1) manpage for --relative in conjunction with /./ in paths.
	42	# This is the only way to have exclude-dirs work together with the
	43	# --one-file-system option.
	44	# This way we can pass multiple source paths and tell rsync which directory
	45	# they're supposed to be relative to.
	46	# Otherwise with eg. using multiple rsync commands means the --exclude
	47	# directives need to be modified for every command as they are meant to be
	48	# relative to the rootdir, while rsync treats them as relative to the
	49	# source dir.
	50	foreach my $disk (@$disks) {
bd8e1739	51	push @$rsync, "$from/.$disk->{mp}";
5a8a3087	52	}
5582b0c3 TL	53
	54	my $transferred = '';
	55	my $logfunc = sub {
	56	return if $_[0] !~ /^Total transferred file size: (.+)$/;
	57	$transferred = $1;
	58	};
	59
	60	my $starttime = time();
	61	PVE::Tools::run_command([@$rsync, $to], logfunc => $logfunc);
d14a9a1b DM	62	my $delay = time () - $starttime;
d14a9a1b DM	63
5582b0c3	64	$self->loginfo ("$text sync finished - transferred $transferred in ${delay}s");
d14a9a1b DM	65	};
	66
	67	sub new {
	68	my ($class, $vzdump) = @_;
7808afef	69
d14a9a1b DM	70	PVE::VZDump::check_bin('lxc-stop');
d14a9a1b DM	71	PVE::VZDump::check_bin('lxc-start');
d14a9a1b DM	72
	73	my $self = bless {};
	74
	75	$self->{vzdump} = $vzdump;
	76	$self->{storecfg} = PVE::Storage::config();
7808afef	77
d14a9a1b DM	78	$self->{vmlist} = PVE::LXC::config_list();
	79
	80	return $self;
	81	}
	82
	83	sub type {
	84	return 'lxc';
	85	}
	86
	87	sub vm_status {
	88	my ($self, $vmid) = @_;
	89
	90	my $running = PVE::LXC::check_running($vmid) ? 1 : 0;
7808afef AL	91
7808afef AL	92	return wantarray ? ($running, $running ? 'running' : 'stopped') : $running;
d14a9a1b DM	93	}
d14a9a1b DM	94
4ca61ce8	95	my $check_mountpoint_empty = sub {
b739f640 DM	96	my ($mountpoint) = @_;
b739f640 DM	97
235dbdf3	98	die "mount point '$mountpoint' is not a directory\n" if ! -d $mountpoint;
4ca61ce8	99
b739f640 DM	100	PVE::Tools::dir_glob_foreach($mountpoint, qr/.*/, sub {
	101	my $entry = shift;
	102	return if $entry eq '.' \|\| $entry eq '..';
235dbdf3	103	die "mount point '$mountpoint' not empty\n";
b739f640	104	});
d14a9a1b DM	105	};
	106
	107	sub prepare {
	108	my ($self, $task, $vmid, $mode) = @_;
	109
67afe46e	110	my $conf = $self->{vmlist}->{$vmid} = PVE::LXC::Config->load_config($vmid);
57ed5ed0	111	my $storage_cfg = $self->{storecfg};
d14a9a1b	112
05812a36 WL	113	$self->loginfo("CT Name: $conf->{hostname}")
	114	if defined($conf->{hostname});
	115
d14a9a1b DM	116	my $running = PVE::LXC::check_running($vmid);
d14a9a1b DM	117
2e57a9f6 WB	118	my $disks = $task->{disks} = [];
2e57a9f6 WB	119	my $exclude_dirs = $task->{exclude_dirs} = [];
d14a9a1b	120
27916659	121	$task->{hostname} = $conf->{'hostname'} \|\| "CT$vmid";
d14a9a1b	122
01dce99b WB	123	my ($id_map, $rootuid, $rootgid) = PVE::LXC::parse_id_maps($conf);
01dce99b WB	124	$task->{userns_cmd} = PVE::LXC::userns_command($id_map);
4c98d66c FG	125	$task->{rootuid} = $rootuid;
	126	$task->{rootgid} = $rootgid;
	127
5040d81c	128	my $volids = $task->{volids} = [];
d14a9a1b	129
efd1706d	130	my $backup_volumes = PVE::LXC::Config->get_backup_volumes($conf);
2e57a9f6	131
501a9f9f TL	132	for my $volume (@{$backup_volumes}) {
	133	my $name = $volume->{key};
	134	my $included = $volume->{included};
	135	my $volume_config = $volume->{volume_config};
efd1706d	136
501a9f9f	137	my $volid = $volume_config->{volume};
efd1706d	138	my $mount = $volume_config->{mp};
efd1706d	139
501a9f9f	140	next if !$volid \|\| !$mount;
efd1706d AL	141
efd1706d AL	142	if (!$included) {
501a9f9f	143	my $type = $volume_config->{type};
2e57a9f6	144	push @$exclude_dirs, $mount;
db773fab	145	$self->loginfo("excluding $type mount point $name ('$mount') from backup ($volume->{reason})");
efd1706d	146	next;
2e57a9f6 WB	147	}
2e57a9f6 WB	148
efd1706d	149	$volume_config->{name} = $name;
362a853a FG	150
362a853a FG	151	# immutable raw base images need RO mount
efd1706d AL	152	if ($conf->{template} && !defined($volume_config->{ro})) {
efd1706d AL	153	$volume_config->{ro} = 1;
362a853a	154	}
efd1706d AL	155
	156	$self->loginfo("including mount point $name ('$mount') in backup");
	157	push @$disks, $volume_config;
501a9f9f	158	push @$volids, $volid if $included;
efd1706d	159	}
d14a9a1b	160
d14a9a1b	161	if ($mode eq 'snapshot') {
4518000b	162	if (!PVE::LXC::Config->has_feature('snapshot', $conf, $storage_cfg, undef, undef, 1)) {
c31ad455	163	die "mode failure - some volumes do not support snapshots\n";
4ca61ce8	164	}
d14a9a1b	165
2d3f23be	166
4ca61ce8 DM	167	if ($conf->{snapshots} && $conf->{snapshots}->{vzdump}) {
4ca61ce8 DM	168	$self->loginfo("found old vzdump snapshot (force removal)");
91458f71 FG	169	PVE::LXC::Config->lock_config($vmid, sub {
	170	$self->unlock_vm($vmid);
	171	PVE::LXC::Config->snapshot_delete($vmid, 'vzdump', 1);
	172	$self->lock_vm($vmid);
	173	});
4ca61ce8	174	}
d14a9a1b	175
22a91261 WB	176	my $rootdir = $default_mount_point;
	177	mkpath $rootdir;
	178	&$check_mountpoint_empty($rootdir);
d14a9a1b	179
c31ad455	180	# set snapshot_count (freezes CT if snapshot_count > 1)
5040d81c	181	$task->{snapshot_count} = scalar(@$volids);
f5313774	182	} elsif ($mode eq 'stop') {
22a91261 WB	183	my $rootdir = $default_mount_point;
	184	mkpath $rootdir;
	185	&$check_mountpoint_empty($rootdir);
f5313774	186	} elsif ($mode eq 'suspend') {
632eca5a	187	my $pid = PVE::LXC::find_lxc_pid($vmid);
2e57a9f6 WB	188	foreach my $disk (@$disks) {
	189	$disk->{dir} = "/proc/$pid/root$disk->{mp}";
	190	}
f5313774 DM	191	$task->{snapdir} = $task->{tmpdir};
f5313774 DM	192	} else {
2d3f23be	193	unlock_vm($self, $vmid);
f5313774	194	die "unknown mode '$mode'\n"; # should not happen
d14a9a1b	195	}
b6c491ee WB	196
b6c491ee WB	197	if ($mode ne 'suspend') {
c31ad455	198	# If we perform mount operations, let's unshare the mount namespace
b6c491ee WB	199	# to not influence the running host.
b6c491ee WB	200	PVE::Tools::unshare(PVE::Tools::CLONE_NEWNS);
a78425d7	201	PVE::Tools::run_command(['mount', '--make-rslave', '/']);
b6c491ee	202	}
d14a9a1b DM	203	}
	204
	205	sub lock_vm {
	206	my ($self, $vmid) = @_;
2d3f23be	207
ad408fe1	208	PVE::LXC::Config->set_lock($vmid, 'backup');
d14a9a1b DM	209	}
	210
	211	sub unlock_vm {
	212	my ($self, $vmid) = @_;
2d3f23be	213
ad408fe1	214	PVE::LXC::Config->remove_lock($vmid, 'backup')
d14a9a1b DM	215	}
d14a9a1b DM	216
4ca61ce8 DM	217	sub snapshot {
	218	my ($self, $task, $vmid) = @_;
	219
c31ad455	220	$self->loginfo("create storage snapshot 'vzdump'");
4ca61ce8 DM	221
4ca61ce8 DM	222	# todo: freeze/unfreeze if we have more than one volid
91458f71 FG	223	PVE::LXC::Config->lock_config($vmid, sub {
	224	$self->unlock_vm($vmid);
	225	PVE::LXC::Config->snapshot_create($vmid, 'vzdump', 0, "vzdump backup snapshot");
	226	$self->lock_vm($vmid);
	227	});
4ca61ce8	228	$task->{cleanup}->{remove_snapshot} = 1;
7808afef	229
4ca61ce8	230	# reload config
67afe46e	231	my $conf = $self->{vmlist}->{$vmid} = PVE::LXC::Config->load_config($vmid);
c31ad455	232	die "unable to read vzdump snapshot config - internal error"
4ca61ce8 DM	233	if !($conf->{snapshots} && $conf->{snapshots}->{vzdump});
4ca61ce8 DM	234
2e57a9f6	235	my $disks = $task->{disks};
5040d81c	236	my $volids = $task->{volids};
4ca61ce8	237
22a91261	238	my $rootdir = $default_mount_point;
2e57a9f6 WB	239	my $storage_cfg = $self->{storecfg};
2e57a9f6 WB	240
5040d81c	241	PVE::Storage::activate_volumes($storage_cfg, $volids, 'vzdump');
2e57a9f6 WB	242	foreach my $disk (@$disks) {
2e57a9f6 WB	243	$disk->{dir} = "${rootdir}$disk->{mp}";
4c98d66c	244	PVE::LXC::mountpoint_mount($disk, $rootdir, $storage_cfg, 'vzdump', $task->{rootuid}, $task->{rootgid});
2e57a9f6 WB	245	}
	246
	247	$task->{snapdir} = $rootdir;
4ca61ce8 DM	248	}
4ca61ce8 DM	249
d14a9a1b DM	250	sub copy_data_phase1 {
	251	my ($self, $task) = @_;
	252
9c9a3b8c WB	253	if (my $mntinfo = PVE::VZDump::get_mount_info($task->{snapdir})) {
9c9a3b8c WB	254	if ($mntinfo->{fstype} =~ /^nfs4?/) {
b67c14c0 WB	255	$self->loginfo(
	256	"temporary directory is on NFS, disabling xattr and acl"
	257	." support, consider configuring a local tmpdir via"
	258	." /etc/vzdump.conf\n");
9c9a3b8c WB	259	$task->{no_xattrs} = 1;
	260	}
	261	}
	262
50ee6ffe	263	$self->$rsync_vm($task, $task->{snapdir}, "first", 1);
d14a9a1b DM	264	}
	265
	266	sub copy_data_phase2 {
	267	my ($self, $task) = @_;
	268
50ee6ffe	269	$self->$rsync_vm($task, $task->{snapdir}, "final", 0);
d14a9a1b DM	270	}
	271
	272	sub stop_vm {
	273	my ($self, $task, $vmid) = @_;
	274
f90f7e53 TL	275	my $opts = $self->{vzdump}->{opts};
	276	my $timeout = $opts->{stopwait} * 60;
	277
b1bad293	278	PVE::LXC::vm_stop($vmid, 0, $timeout);
d14a9a1b DM	279	}
	280
	281	sub start_vm {
	282	my ($self, $task, $vmid) = @_;
	283
05db033f OB	284	my $conf = PVE::LXC::Config->load_config($vmid);
05db033f OB	285	PVE::LXC::vm_start($vmid, $conf);
d14a9a1b DM	286	}
	287
	288	sub suspend_vm {
	289	my ($self, $task, $vmid) = @_;
	290
89424a8b	291	PVE::LXC::freeze($vmid);
d14a9a1b DM	292	}
	293
	294	sub resume_vm {
	295	my ($self, $task, $vmid) = @_;
	296
89424a8b	297	PVE::LXC::thaw($vmid);
d14a9a1b DM	298	}
	299
	300	sub assemble {
	301	my ($self, $task, $vmid) = @_;
	302
99a0bcb0	303	my $opts = $self->{vzdump}->{opts};
514b5f82	304
67afe46e	305	my $conf = PVE::LXC::Config->load_config($vmid);
48314d4e	306	delete $conf->{lock};
514b5f82	307	delete $conf->{snapshots};
f626ac9d	308	delete $conf->{parent};
53fafd3f	309	delete $conf->{pending};
514b5f82	310
99a0bcb0 DM	311	my $tmpdir = $task->{tmpdir};
	312
	313	mkpath "$tmpdir/etc/vzdump/";
	314
1b4cf758	315	PVE::Tools::file_set_contents("$tmpdir/etc/vzdump/pct.conf", PVE::LXC::Config::write_pct_config("/lxc/$vmid.conf", $conf));
bf040874 WL	316
bf040874 WL	317	my $firewall ="/etc/pve/firewall/$vmid.fw";
d1671a80	318	my $fwconftmp = "$tmpdir/etc/vzdump/pct.fw";
99a0bcb0	319
3ae05e19	320	if ($self->{vzdump}->{opts}->{pbs}) {
99a0bcb0 DM	321	# fixme: do not store pct.conf and fw.conf into $tmpdir
	322	if (-e $firewall) {
	323	PVE::Tools::file_copy($firewall, $fwconftmp);
	324	}
d1671a80	325	} else {
99a0bcb0 DM	326	if (-e $firewall) {
	327	PVE::Tools::file_copy($firewall, $fwconftmp);
	328	} else {
	329	PVE::Tools::file_set_contents($fwconftmp, '');
	330	}
	331	$task->{fw} = 1;
bf040874	332	}
d14a9a1b DM	333	}
	334
	335	sub archive {
	336	my ($self, $task, $vmid, $filename, $comp) = @_;
cbd6753d	337
b7ec90ed	338	my $disks = $task->{disks};
5a8a3087	339	my @sources;
b7ec90ed	340
459fd4d2	341	if ($task->{mode} eq 'stop') {
2e57a9f6	342	my $storage_cfg = $self->{storecfg};
8ebb49ee	343
00cc0416	344	PVE::Storage::activate_volumes($storage_cfg, $task->{volids});
8ebb49ee TL	345
8ebb49ee TL	346	my $rootdir = $default_mount_point;
2e57a9f6 WB	347	foreach my $disk (@$disks) {
2e57a9f6 WB	348	$disk->{dir} = "${rootdir}$disk->{mp}";
4c98d66c	349	PVE::LXC::mountpoint_mount($disk, $rootdir, $storage_cfg, undef, $task->{rootuid}, $task->{rootgid});
5a8a3087 WB	350	# add every enabled mountpoint (since we use --one-file-system)
	351	# mp already starts with a / so we only need to add the dot
	352	push @sources, ".$disk->{mp}";
2e57a9f6 WB	353	}
2e57a9f6 WB	354	$task->{snapdir} = $rootdir;
5040d81c FG	355	} elsif ($task->{mode} eq 'snapshot') {
	356	# mounting the vzdump snapshots and setting $snapdir is already done,
	357	# but we need to include all mountpoints here!
	358	foreach my $disk (@$disks) {
	359	push @sources, ".$disk->{mp}";
	360	}
5a8a3087 WB	361	} else {
	362	# the data was rsynced to a temporary location, only use '.' to avoid
	363	# having mountpoints duplicated
	364	push @sources, '.';
459fd4d2 DM	365	}
459fd4d2 DM	366
d14a9a1b	367	my $opts = $self->{vzdump}->{opts};
d14a9a1b	368	my $snapdir = $task->{snapdir};
cbd6753d	369	my $tmpdir = $task->{tmpdir};
d14a9a1b	370
01dce99b	371	my $userns_cmd = $task->{userns_cmd};
99a0bcb0	372
3ae05e19	373	if ($self->{vzdump}->{opts}->{pbs}) {
99a0bcb0	374
99a0bcb0	375	my $param = [];
99a0bcb0 DM	376	push @$param, "pct.conf:$tmpdir/etc/vzdump/pct.conf";
	377
	378	my $fw_conf = "$tmpdir/etc/vzdump/pct.fw";
	379	if (-f $fw_conf) {
	380	push @$param, "fw.conf:$fw_conf";
	381	}
	382
2862bbe5	383	my $rootdir = $snapdir;
99a0bcb0 DM	384	push @$param, "root.pxar:$rootdir";
99a0bcb0 DM	385
ef7f785c TL	386	foreach my $disk (@sources) {
ef7f785c TL	387	push @$param, '--include-dev', "$snapdir/$disk";
99a0bcb0 DM	388	}
	389
	390	push @$param, '--skip-lost-and-found' if $userns_cmd;
	391
	392	push @$param, '--backup-type', 'ct';
	393	push @$param, '--backup-id', $vmid;
	394	push @$param, '--backup-time', $task->{backup_time};
	395
2862bbe5 TL	396	my @storage = ($opts->{scfg}, $opts->{storage});
	397
	398	my $logfunc = sub { my $line = shift; $self->loginfo($line) };
	399	PVE::Storage::PBSPlugin::run_raw_client_cmd(@storage, 'backup', $param,
99a0bcb0 DM	400	logfunc => $logfunc, userns_cmd => $userns_cmd);
99a0bcb0 DM	401
2862bbe5 TL	402	# FIXME: move to a pve-common helper, storage has a similar one
	403	my $time_iso8601 = strftime('%FT%TZ', gmtime($task->{backup_time}));
	404	my $snapshot_id = "ct/$vmid/$time_iso8601";
	405	my $res = eval { PVE::Storage::PBSPlugin::run_client_cmd(@storage, 'files', [$snapshot_id]) } // [];
	406	$task->{size} = 0;
	407	$task->{size} += $_->{size} for @$res;
	408
d14a9a1b	409	} else {
99a0bcb0 DM	410
	411	my $tar = [@$userns_cmd, 'tar', 'cpf', '-', '--totals',
	412	@PVE::Storage::Plugin::COMMON_TAR_FLAGS,
	413	'--one-file-system', '--warning=no-file-ignored'];
	414
	415	# note: --remove-files does not work because we do not
	416	# backup all files (filters). tar complains:
	417	# Cannot rmdir: Directory not empty
	418	# we disable this optimization for now
	419	#if ($snapdir eq $task->{tmpdir} && $snapdir =~ m\|^$opts->{dumpdir}/\|) {
	420	# push @$tar, "--remove-files"; # try to save space
	421	#}
	422
	423	# The directory parameter can give an alternative directory as source.
	424	# the second parameter gives the structure in the tar.
	425	push @$tar, "--directory=$tmpdir", './etc/vzdump/pct.conf';
	426	push @$tar, "./etc/vzdump/pct.fw" if $task->{fw};
	427	push @$tar, "--directory=$snapdir";
	428	push @$tar, '--no-anchored', '--exclude=lost+found' if $userns_cmd;
	429	push @$tar, '--anchored';
	430	push @$tar, map { "--exclude=.$_" } @{$self->{vzdump}->{findexcl}};
	431
	432	push @$tar, @sources;
	433
	434	my $cmd = [ $tar ];
	435
	436	my $bwl = $opts->{bwlimit}*1024; # bandwidth limit for cstream
	437	push @$cmd, [ 'cstream', '-t', $bwl ] if $opts->{bwlimit};
	438	push @$cmd, [ split(/\s+/, $comp) ] if $comp;
	439
	440	if ($opts->{stdout}) {
	441	$self->cmd($cmd, output => ">&" . fileno($opts->{stdout}));
	442	} else {
	443	push @{$cmd->[-1]}, \(">" . PVE::Tools::shellquote($filename));
	444	$self->cmd($cmd);
	445	}
d14a9a1b DM	446	}
	447	}
	448
	449	sub cleanup {
	450	my ($self, $task, $vmid) = @_;
	451
67afe46e	452	my $conf = PVE::LXC::Config->load_config($vmid);
d14a9a1b	453
0c44de7b	454	if ($task->{mode} ne 'suspend') {
96d20be2 DM	455	my $rootdir = $default_mount_point;
	456	my $disks = $task->{disks};
	457	foreach my $disk (reverse @$disks) {
	458	PVE::Tools::run_command(['umount', '-l', '-d', $disk->{dir}]) if $disk->{dir};
	459	}
2e57a9f6	460	}
b739f640	461
4ca61ce8	462	if ($task->{cleanup}->{remove_snapshot}) {
02e1a9c5	463	$self->loginfo("cleanup temporary 'vzdump' snapshot");
4518000b	464	PVE::LXC::Config->snapshot_delete($vmid, 'vzdump', 0);
d14a9a1b	465	}
d14a9a1b DM	466	}
	467
	468	1;