1 package PVE
::Storage
::ZFSPoolPlugin
;
11 use PVE
::RPCEnvironment
;
12 use PVE
::Storage
::Plugin
;
13 use PVE
::Tools
qw(run_command);
15 use base
qw(PVE::Storage::Plugin);
23 content
=> [ {images
=> 1, rootdir
=> 1}, {images
=> 1 , rootdir
=> 1}],
24 format
=> [ { raw
=> 1, subvol
=> 1 } , 'raw' ],
31 description
=> "block size",
35 description
=> "use sparse volumes",
39 description
=> "mount point",
40 type
=> 'string', format
=> 'pve-storage-path',
47 pool
=> { fixed
=> 1 },
48 blocksize
=> { optional
=> 1 },
49 sparse
=> { optional
=> 1 },
50 nodes
=> { optional
=> 1 },
51 disable
=> { optional
=> 1 },
52 content
=> { optional
=> 1 },
53 bwlimit
=> { optional
=> 1 },
54 mountpoint
=> { optional
=> 1 },
58 # static zfs helper methods
60 sub zfs_parse_zvol_list
{
61 my ($text, $pool) = @_;
65 return $list if !$text;
67 my @lines = split /\n/, $text;
68 foreach my $line (@lines) {
69 my ($dataset, $size, $origin, $type, $refquota) = split(/\s+/, $line);
70 next if !($type eq 'volume' || $type eq 'filesystem');
73 my @parts = split /\//, $dataset;
74 next if scalar(@parts) < 2; # we need pool/name
75 my $name = pop @parts;
76 my $parsed_pool = join('/', @parts);
77 next if $parsed_pool ne $pool;
79 next unless $name =~ m!^(vm|base|subvol|basevol)-(\d+)-(\S+)$!;
82 $zvol->{name
} = $name;
83 if ($type eq 'filesystem') {
84 if ($refquota eq 'none') {
87 $zvol->{size
} = $refquota + 0;
89 $zvol->{format
} = 'subvol';
91 $zvol->{size
} = $size + 0;
92 $zvol->{format
} = 'raw';
94 if ($origin !~ /^-$/) {
95 $zvol->{origin
} = $origin;
104 my ($class, $volname) = @_;
106 if ($volname =~ m/^(((base|basevol)-(\d+)-\S+)\/)?
((base
|basevol
|vm
|subvol
)-(\d
+)-\S
+)$/) {
107 my $format = ($6 eq 'subvol' || $6 eq 'basevol') ?
'subvol' : 'raw';
108 my $isBase = ($6 eq 'base' || $6 eq 'basevol');
109 return ('images', $5, $7, $2, $4, $isBase, $format);
112 die "unable to parse zfs volume name '$volname'\n";
115 # virtual zfs methods (subclass can overwrite them)
118 my ($class, $storeid, $scfg, %param) = @_;
120 my $cfg_mountpoint = $scfg->{mountpoint
};
122 # ignore failure, pool might currently not be imported
125 my $res = $class->zfs_get_properties($scfg, 'mountpoint', $scfg->{pool
}, 1);
126 $mountpoint = PVE
::Storage
::Plugin
::verify_path
($res, 1) if defined($res);
129 if (defined($cfg_mountpoint)) {
130 if (defined($mountpoint) && !($cfg_mountpoint =~ m
|^\Q
$mountpoint\E/?$|)) {
131 warn "warning for $storeid - mountpoint: $cfg_mountpoint " .
132 "does not match current mount point: $mountpoint\n";
135 $scfg->{mountpoint
} = $mountpoint;
142 my ($class, $scfg, $volname, $storeid, $snapname) = @_;
144 my ($vtype, $name, $vmid) = $class->parse_volname($volname);
147 my $mountpoint = $scfg->{mountpoint
} // "/$scfg->{pool}";
149 if ($vtype eq "images") {
150 if ($name =~ m/^subvol-/ || $name =~ m/^basevol-/) {
151 $path = "$mountpoint/$name";
153 $path = "/dev/zvol/$scfg->{pool}/$name";
155 $path .= "\@$snapname" if defined($snapname);
157 die "$vtype is not allowed in ZFSPool!";
160 return ($path, $vmid, $vtype);
164 my ($class, $scfg, $timeout, $method, @params) = @_;
168 if ($method eq 'zpool_list') {
169 push @$cmd, 'zpool', 'list';
170 } elsif ($method eq 'zpool_import') {
171 push @$cmd, 'zpool', 'import';
172 $timeout = 15 if !$timeout || $timeout < 15;
174 push @$cmd, 'zfs', $method;
179 my $output = sub { $msg .= "$_[0]\n" };
181 if (PVE
::RPCEnvironment-
>is_worker()) {
182 $timeout = 60*60 if !$timeout;
183 $timeout = 60*5 if $timeout < 60*5;
185 $timeout = 10 if !$timeout;
188 run_command
($cmd, errmsg
=> "zfs error", outfunc
=> $output, timeout
=> $timeout);
193 sub zfs_wait_for_zvol_link
{
194 my ($class, $scfg, $volname, $timeout) = @_;
196 my $default_timeout = PVE
::RPCEnvironment-
>is_worker() ?
60*5 : 10;
197 $timeout = $default_timeout if !defined($timeout);
199 my ($devname, undef, undef) = $class->path($scfg, $volname);
201 for (my $i = 1; $i <= $timeout; $i++) {
203 die "timeout: no zvol device link for '$volname' found after $timeout sec found.\n"
211 my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_;
217 die "illegal name '$volname' - should be 'vm-$vmid-*'\n"
218 if $volname && $volname !~ m/^vm-$vmid-/;
219 $volname = $class->find_free_diskname($storeid, $scfg, $vmid, $fmt)
222 $class->zfs_create_zvol($scfg, $volname, $size);
223 $class->zfs_wait_for_zvol_link($scfg, $volname);
225 } elsif ( $fmt eq 'subvol') {
227 die "illegal name '$volname' - should be 'subvol-$vmid-*'\n"
228 if $volname && $volname !~ m/^subvol-$vmid-/;
229 $volname = $class->find_free_diskname($storeid, $scfg, $vmid, $fmt)
232 die "illegal name '$volname' - should be 'subvol-$vmid-*'\n"
233 if $volname !~ m/^subvol-$vmid-/;
235 $class->zfs_create_subvol($scfg, $volname, $size);
238 die "unsupported format '$fmt'";
245 my ($class, $storeid, $scfg, $volname, $isBase) = @_;
247 my (undef, $name, undef) = $class->parse_volname($volname);
249 $class->zfs_delete_zvol($scfg, $name);
255 my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_;
257 my $zfs_list = $class->zfs_list_zvol($scfg);
261 for my $info (values $zfs_list->%*) {
262 my $volname = $info->{name
};
263 my $parent = $info->{parent
};
264 my $owner = $info->{vmid
};
266 if ($parent && $parent =~ m/^(\S+)\@__base__$/) {
267 my ($basename) = ($1);
268 $info->{volid
} = "$storeid:$basename/$volname";
270 $info->{volid
} = "$storeid:$volname";
274 my $found = grep { $_ eq $info->{volid
} } @$vollist;
277 next if defined ($vmid) && ($owner ne $vmid);
285 sub zfs_get_properties
{
286 my ($class, $scfg, $properties, $dataset, $timeout) = @_;
288 my $result = $class->zfs_request($scfg, $timeout, 'get', '-o', 'value',
289 '-Hp', $properties, $dataset);
290 my @values = split /\n/, $result;
291 return wantarray ?
@values : $values[0];
294 sub zfs_get_pool_stats
{
295 my ($class, $scfg) = @_;
300 my @lines = $class->zfs_get_properties($scfg, 'available,used', $scfg->{pool
});
302 if($lines[0] =~ /^(\d+)$/) {
306 if($lines[1] =~ /^(\d+)$/) {
310 return ($available, $used);
313 sub zfs_create_zvol
{
314 my ($class, $scfg, $zvol, $size) = @_;
316 # always align size to 1M as workaround until
317 # https://github.com/zfsonlinux/zfs/issues/8541 is solved
318 my $padding = (1024 - $size % 1024) % 1024;
319 $size = $size + $padding;
321 my $cmd = ['create'];
323 push @$cmd, '-s' if $scfg->{sparse
};
325 push @$cmd, '-b', $scfg->{blocksize
} if $scfg->{blocksize
};
327 push @$cmd, '-V', "${size}k", "$scfg->{pool}/$zvol";
329 $class->zfs_request($scfg, undef, @$cmd);
332 sub zfs_create_subvol
{
333 my ($class, $scfg, $volname, $size) = @_;
335 my $dataset = "$scfg->{pool}/$volname";
336 my $quota = $size ?
"${size}k" : "none";
338 my $cmd = ['create', '-o', 'acltype=posixacl', '-o', 'xattr=sa',
339 '-o', "refquota=${quota}", $dataset];
341 $class->zfs_request($scfg, undef, @$cmd);
344 sub zfs_delete_zvol
{
345 my ($class, $scfg, $zvol) = @_;
349 for (my $i = 0; $i < 6; $i++) {
351 eval { $class->zfs_request($scfg, undef, 'destroy', '-r', "$scfg->{pool}/$zvol"); };
353 if ($err =~ m/^zfs error:(.*): dataset is busy.*/) {
355 } elsif ($err =~ m/^zfs error:.*: dataset does not exist.*$/) {
370 my ($class, $scfg) = @_;
372 my $text = $class->zfs_request(
377 'name,volsize,origin,type,refquota',
384 # It's still required to have zfs_parse_zvol_list filter by pool, because -d1 lists
385 # $scfg->{pool} too and while unlikely, it could be named to be mistaken for a volume.
386 my $zvols = zfs_parse_zvol_list
($text, $scfg->{pool
});
387 return {} if !$zvols;
390 foreach my $zvol (@$zvols) {
391 my $name = $zvol->{name
};
392 my $parent = $zvol->{origin
};
393 if($zvol->{origin
} && $zvol->{origin
} =~ m/^$scfg->{pool}\/(\S
+)$/){
399 size
=> $zvol->{size
},
401 format
=> $zvol->{format
},
402 vmid
=> $zvol->{owner
},
409 sub zfs_get_sorted_snapshot_list
{
410 my ($class, $scfg, $volname, $sort_params) = @_;
412 my @params = ('-H', '-r', '-t', 'snapshot', '-o', 'name', $sort_params->@*);
414 my $vname = ($class->parse_volname($volname))[1];
415 push @params, "$scfg->{pool}\/$vname";
417 my $text = $class->zfs_request($scfg, undef, 'list', @params);
418 my @snapshots = split(/\n/, $text);
421 for my $snapshot (@snapshots) {
422 (my $snap_name = $snapshot) =~ s/^.*@//;
423 push $snap_names->@*, $snap_name;
429 my ($class, $storeid, $scfg, $cache) = @_;
437 ($free, $used) = $class->zfs_get_pool_stats($scfg);
439 $total = $free + $used;
443 return ($total, $free, $used, $active);
446 sub volume_size_info
{
447 my ($class, $scfg, $storeid, $volname, $timeout) = @_;
449 my (undef, $vname, undef, $parent, undef, undef, $format) =
450 $class->parse_volname($volname);
452 my $attr = $format eq 'subvol' ?
'refquota' : 'volsize';
453 my ($size, $used) = $class->zfs_get_properties($scfg, "$attr,usedbydataset", "$scfg->{pool}/$vname");
455 $used = ($used =~ /^(\d+)$/) ?
$1 : 0;
457 if ($size =~ /^(\d+)$/) {
458 return wantarray ?
($1, $format, $used, $parent) : $1;
461 die "Could not get zfs volume size\n";
464 sub volume_snapshot
{
465 my ($class, $scfg, $storeid, $volname, $snap) = @_;
467 my $vname = ($class->parse_volname($volname))[1];
469 $class->zfs_request($scfg, undef, 'snapshot', "$scfg->{pool}/$vname\@$snap");
472 sub volume_snapshot_delete
{
473 my ($class, $scfg, $storeid, $volname, $snap, $running) = @_;
475 my $vname = ($class->parse_volname($volname))[1];
477 $class->deactivate_volume($storeid, $scfg, $vname, $snap, {});
478 $class->zfs_request($scfg, undef, 'destroy', "$scfg->{pool}/$vname\@$snap");
481 sub volume_snapshot_rollback
{
482 my ($class, $scfg, $storeid, $volname, $snap) = @_;
484 my (undef, $vname, undef, undef, undef, undef, $format) = $class->parse_volname($volname);
486 my $msg = $class->zfs_request($scfg, undef, 'rollback', "$scfg->{pool}/$vname\@$snap");
488 # we have to unmount rollbacked subvols, to invalidate wrong kernel
489 # caches, they get mounted in activate volume again
490 # see zfs bug #10931 https://github.com/openzfs/zfs/issues/10931
491 if ($format eq 'subvol') {
492 eval { $class->zfs_request($scfg, undef, 'unmount', "$scfg->{pool}/$vname"); };
494 die $err if $err !~ m/not currently mounted$/;
501 sub volume_rollback_is_possible
{
502 my ($class, $scfg, $storeid, $volname, $snap, $blockers) = @_;
504 # can't use '-S creation', because zfs list won't reverse the order when the
505 # creation time is the same second, breaking at least our tests.
506 my $snapshots = $class->zfs_get_sorted_snapshot_list($scfg, $volname, ['-s', 'creation']);
509 $blockers //= []; # not guaranteed to be set by caller
510 for my $snapshot ($snapshots->@*) {
511 if ($snapshot eq $snap) {
514 push $blockers->@*, $snapshot;
518 my $volid = "${storeid}:${volname}";
520 die "can't rollback, snapshot '$snap' does not exist on '$volid'\n"
523 die "can't rollback, '$snap' is not most recent snapshot on '$volid'\n"
524 if scalar($blockers->@*) > 0;
529 sub volume_snapshot_info
{
530 my ($class, $scfg, $storeid, $volname) = @_;
532 my @params = ('-Hp', '-r', '-t', 'snapshot', '-o', 'name,guid,creation');
534 my $vname = ($class->parse_volname($volname))[1];
535 push @params, "$scfg->{pool}\/$vname";
537 my $text = $class->zfs_request($scfg, undef, 'list', @params);
538 my @lines = split(/\n/, $text);
541 for my $line (@lines) {
542 my ($snapshot, $guid, $creation) = split(/\s+/, $line);
543 (my $snap_name = $snapshot) =~ s/^.*@//;
545 $info->{$snap_name} = {
547 timestamp
=> $creation,
553 my sub dataset_mounted_heuristic
{
556 my $mounts = PVE
::ProcFSTools
::parse_proc_mounts
();
557 for my $mp (@$mounts) {
558 my ($what, $dir, $fs) = $mp->@*;
559 next if $fs ne 'zfs';
560 # check for root-dataset or any child-dataset (root-dataset could have 'canmount=off')
561 # If any child is mounted heuristically assume that `zfs mount -a` was successful
562 next if $what !~ m!^$dataset(?:/|$)!;
568 sub activate_storage
{
569 my ($class, $storeid, $scfg, $cache) = @_;
571 # Note: $scfg->{pool} can include dataset <pool>/<dataset>
572 my $dataset = $scfg->{pool
};
573 my $pool = ($dataset =~ s!/.*$!!r);
575 return 1 if dataset_mounted_heuristic
($dataset); # early return
577 my $pool_imported = sub {
578 my @param = ('-o', 'name', '-H', $pool);
579 my $res = eval { $class->zfs_request($scfg, undef, 'zpool_list', @param) };
582 return defined($res) && $res =~ m/$pool/;
585 if (!$pool_imported->()) {
586 # import can only be done if not yet imported!
587 my @param = ('-d', '/dev/disk/by-id/', '-o', 'cachefile=none', $pool);
588 eval { $class->zfs_request($scfg, undef, 'zpool_import', @param) };
590 # just could've raced with another import, so recheck if it is imported
591 die "could not activate storage '$storeid', $err\n" if !$pool_imported->();
594 eval { $class->zfs_request($scfg, undef, 'mount', '-a') };
595 die "could not activate storage '$storeid', $@\n" if $@;
599 sub deactivate_storage
{
600 my ($class, $storeid, $scfg, $cache) = @_;
604 sub activate_volume
{
605 my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
607 return 1 if defined($snapname);
609 my (undef, $dataset, undef, undef, undef, undef, $format) = $class->parse_volname($volname);
611 if ($format eq 'raw') {
612 $class->zfs_wait_for_zvol_link($scfg, $volname);
613 } elsif ($format eq 'subvol') {
614 my $mounted = $class->zfs_get_properties($scfg, 'mounted', "$scfg->{pool}/$dataset");
615 if ($mounted !~ m/^yes$/) {
616 $class->zfs_request($scfg, undef, 'mount', "$scfg->{pool}/$dataset");
623 sub deactivate_volume
{
624 my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
629 my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_;
631 $snap ||= '__base__';
633 my ($vtype, $basename, $basevmid, undef, undef, $isBase, $format) =
634 $class->parse_volname($volname);
636 die "clone_image only works on base images\n" if !$isBase;
638 my $name = $class->find_free_diskname($storeid, $scfg, $vmid, $format);
640 if ($format eq 'subvol') {
641 my $size = $class->zfs_request($scfg, undef, 'list', '-Hp', '-o', 'refquota', "$scfg->{pool}/$basename");
643 $class->zfs_request($scfg, undef, 'clone', "$scfg->{pool}/$basename\@$snap", "$scfg->{pool}/$name", '-o', "refquota=$size");
645 $class->zfs_request($scfg, undef, 'clone', "$scfg->{pool}/$basename\@$snap", "$scfg->{pool}/$name");
648 return "$basename/$name";
652 my ($class, $storeid, $scfg, $volname) = @_;
654 my $snap = '__base__';
656 my ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $format) =
657 $class->parse_volname($volname);
659 die "create_base not possible with base image\n" if $isBase;
662 if ( $format eq 'subvol' ) {
663 $newname =~ s/^subvol-/basevol-/;
665 $newname =~ s/^vm-/base-/;
667 my $newvolname = $basename ?
"$basename/$newname" : "$newname";
669 $class->zfs_request($scfg, undef, 'rename', "$scfg->{pool}/$name", "$scfg->{pool}/$newname");
671 my $running = undef; #fixme : is create_base always offline ?
673 $class->volume_snapshot($scfg, $storeid, $newname, $snap, $running);
679 my ($class, $scfg, $storeid, $volname, $size, $running) = @_;
681 my $new_size = int($size/1024);
683 my (undef, $vname, undef, undef, undef, undef, $format) =
684 $class->parse_volname($volname);
686 my $attr = $format eq 'subvol' ?
'refquota' : 'volsize';
688 # align size to 1M so we always have a valid multiple of the volume block size
689 if ($format eq 'raw') {
690 my $padding = (1024 - $new_size % 1024) % 1024;
691 $new_size = $new_size + $padding;
694 $class->zfs_request($scfg, undef, 'set', "$attr=${new_size}k", "$scfg->{pool}/$vname");
699 sub storage_can_replicate
{
700 my ($class, $scfg, $storeid, $format) = @_;
702 return 1 if $format eq 'raw' || $format eq 'subvol';
707 sub volume_has_feature
{
708 my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_;
711 snapshot
=> { current
=> 1, snap
=> 1},
712 clone
=> { base
=> 1},
713 template
=> { current
=> 1},
714 copy
=> { base
=> 1, current
=> 1},
715 sparseinit
=> { base
=> 1, current
=> 1},
716 replicate
=> { base
=> 1, current
=> 1},
717 rename => {current
=> 1},
720 my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) =
721 $class->parse_volname($volname);
728 $key = $isBase ?
'base' : 'current';
731 return 1 if $features->{$feature}->{$key};
737 my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots) = @_;
739 die "unsupported export stream format for $class: $format\n"
742 die "$class storage can only export snapshots\n"
743 if !defined($snapshot);
745 my $dataset = ($class->parse_volname($volname))[1];
747 my $fd = fileno($fh);
748 die "internal error: invalid file handle for volume_export\n"
752 # For zfs we always create a replication stream (-R) which means the remote
753 # side will always delete non-existing source snapshots. This should work
754 # for all our use cases.
755 my $cmd = ['zfs', 'send', '-Rpv'];
756 if (defined($base_snapshot)) {
757 my $arg = $with_snapshots ?
'-I' : '-i';
758 push @$cmd, $arg, $base_snapshot;
760 push @$cmd, '--', "$scfg->{pool}/$dataset\@$snapshot";
762 run_command
($cmd, output
=> $fd);
767 sub volume_export_formats
{
768 my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_;
770 my @formats = ('zfs');
772 # push @formats, 'fies' if $volname !~ /^(?:basevol|subvol)-/;
773 # push @formats, 'raw' if !$base_snapshot && !$with_snapshots;
778 my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots, $allow_rename) = @_;
780 die "unsupported import stream format for $class: $format\n"
783 my $fd = fileno($fh);
784 die "internal error: invalid file handle for volume_import\n"
787 my (undef, $dataset, $vmid, undef, undef, undef, $volume_format) =
788 $class->parse_volname($volname);
790 my $zfspath = "$scfg->{pool}/$dataset";
791 my $suffix = defined($base_snapshot) ?
"\@$base_snapshot" : '';
792 my $exists = 0 == run_command
(['zfs', 'get', '-H', 'name', $zfspath.$suffix],
793 noerr
=> 1, quiet
=> 1);
794 if (defined($base_snapshot)) {
795 die "base snapshot '$zfspath\@$base_snapshot' doesn't exist\n" if !$exists;
797 die "volume '$zfspath' already exists\n" if !$allow_rename;
798 warn "volume '$zfspath' already exists - importing with a different name\n";
799 $dataset = $class->find_free_diskname($storeid, $scfg, $vmid, $volume_format);
800 $zfspath = "$scfg->{pool}/$dataset";
803 eval { run_command
(['zfs', 'recv', '-F', '--', $zfspath], input
=> "<&$fd") };
805 if (defined($base_snapshot)) {
806 eval { run_command
(['zfs', 'rollback', '-r', '--', "$zfspath\@$base_snapshot"]) };
808 eval { run_command
(['zfs', 'destroy', '-r', '--', $zfspath]) };
813 return "$storeid:$dataset";
816 sub volume_import_formats
{
817 my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_;
819 return $class->volume_export_formats($scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots);
823 my ($class, $scfg, $storeid, $source_volname, $target_vmid, $target_volname) = @_;
833 ) = $class->parse_volname($source_volname);
834 $target_volname = $class->find_free_diskname($storeid, $scfg, $target_vmid, $format)
837 my $pool = $scfg->{pool
};
838 my $source_zfspath = "${pool}/${source_image}";
839 my $target_zfspath = "${pool}/${target_volname}";
841 my $exists = 0 == run_command
(['zfs', 'get', '-H', 'name', $target_zfspath],
842 noerr
=> 1, quiet
=> 1);
843 die "target volume '${target_volname}' already exists\n" if $exists;
845 $class->zfs_request($scfg, 5, 'rename', ${source_zfspath
}, ${target_zfspath
});
847 $base_name = $base_name ?
"${base_name}/" : '';
849 return "${storeid}:${base_name}${target_volname}";