my ($class, $scfg, $volname, $size) = @_;
my $dataset = "$scfg->{pool}/$volname";
+ my $quota = $size ? "${size}k" : "none";
my $cmd = ['create', '-o', 'acltype=posixacl', '-o', 'xattr=sa',
- '-o', "refquota=${size}k", $dataset];
+ '-o', "refquota=${quota}", $dataset];
$class->zfs_request($scfg, undef, @$cmd);
}
return $list;
}
-sub zfs_get_latest_snapshot {
- my ($class, $scfg, $volname) = @_;
+sub zfs_get_sorted_snapshot_list {
+ my ($class, $scfg, $volname, $sort_params) = @_;
my $vname = ($class->parse_volname($volname))[1];
- # abort rollback if snapshot is not the latest
- my @params = ('-t', 'snapshot', '-o', 'name', '-s', 'creation');
+ my @params = ('-H', '-t', 'snapshot', '-o', 'name', $sort_params->@*, "$scfg->{pool}\/$vname");
my $text = $class->zfs_request($scfg, undef, 'list', @params);
my @snapshots = split(/\n/, $text);
- my $recentsnap;
- foreach (@snapshots) {
- if (/$scfg->{pool}\/$vname/) {
- s/^.*@//;
- $recentsnap = $_;
- }
+ my $snap_names = [];
+ for my $snapshot (@snapshots) {
+ (my $snap_name = $snapshot) =~ s/^.*@//;
+ push $snap_names->@*, $snap_name;
}
-
- return $recentsnap;
+ return $snap_names;
}
sub status {
# caches, they get mounted in activate volume again
# see zfs bug #10931 https://github.com/openzfs/zfs/issues/10931
if ($format eq 'subvol') {
- $class->zfs_request($scfg, undef, 'unmount', "$scfg->{pool}/$vname");
+ eval { $class->zfs_request($scfg, undef, 'unmount', "$scfg->{pool}/$vname"); };
+ if (my $err = $@) {
+ die $err if $err !~ m/not currently mounted$/;
+ }
}
return $msg;
}
sub volume_rollback_is_possible {
- my ($class, $scfg, $storeid, $volname, $snap) = @_;
+ my ($class, $scfg, $storeid, $volname, $snap, $blockers) = @_;
+
+ # can't use '-S creation', because zfs list won't reverse the order when the
+ # creation time is the same second, breaking at least our tests.
+ my $snapshots = $class->zfs_get_sorted_snapshot_list($scfg, $volname, ['-s', 'creation']);
+
+ my $found;
+ $blockers //= []; # not guaranteed to be set by caller
+ for my $snapshot ($snapshots->@*) {
+ if ($snapshot eq $snap) {
+ $found = 1;
+ } elsif ($found) {
+ push $blockers->@*, $snapshot;
+ }
+ }
- my $recentsnap = $class->zfs_get_latest_snapshot($scfg, $volname);
+ my $volid = "${storeid}:${volname}";
- die "can't rollback, no snapshots exist at all\n"
- if !defined($recentsnap);
+ die "can't rollback, snapshot '$snap' does not exist on '$volid'\n"
+ if !$found;
- die "can't rollback, '$snap' is not most recent snapshot\n"
- if $snap ne $recentsnap;
+ die "can't rollback, '$snap' is not most recent snapshot on '$volid'\n"
+ if scalar($blockers->@*) > 0;
return 1;
}
-sub volume_snapshot_list {
+sub volume_snapshot_info {
my ($class, $scfg, $storeid, $volname) = @_;
- my ($vtype, $name, $vmid) = $class->parse_volname($volname);
-
- my $zpath = "$scfg->{pool}/$name";
-
- my $snaps = [];
+ my $vname = ($class->parse_volname($volname))[1];
- my $cmd = ['zfs', 'list', '-r', '-H', '-S', 'name', '-t', 'snap', '-o',
- 'name', $zpath];
+ my @params = ('-Hp', '-t', 'snapshot', '-o', 'name,guid,creation', "$scfg->{pool}\/$vname");
+ my $text = $class->zfs_request($scfg, undef, 'list', @params);
+ my @lines = split(/\n/, $text);
- my $outfunc = sub {
- my $line = shift;
+ my $info = {};
+ for my $line (@lines) {
+ my ($snapshot, $guid, $creation) = split(/\s+/, $line);
+ (my $snap_name = $snapshot) =~ s/^.*@//;
- if ($line =~ m/^\Q$zpath\E@(.*)$/) {
- push @$snaps, $1;
- }
- };
+ $info->{$snap_name} = {
+ id => $guid,
+ timestamp => $creation,
+ };
+ }
+ return $info;
+}
- eval { run_command( [$cmd], outfunc => $outfunc , errfunc => sub{}); };
+my sub dataset_mounted_heuristic {
+ my ($dataset) = @_;
- # return an empty array if dataset does not exist.
- return $snaps;
+ my $mounts = PVE::ProcFSTools::parse_proc_mounts();
+ for my $mp (@$mounts) {
+ my ($what, $dir, $fs) = $mp->@*;
+ next if $fs ne 'zfs';
+ # check for root-dataset or any child-dataset (root-dataset could have 'canmount=off')
+ # If any child is mounted heuristically assume that `zfs mount -a` was successful
+ next if $what !~ m!^$dataset(?:/|$)!;
+ return 1;
+ }
+ return 0;
}
sub activate_storage {
my $dataset = $scfg->{pool};
my $pool = ($dataset =~ s!/.*$!!r);
- my $dataset_mounted = sub {
- my $mounts = PVE::ProcFSTools::parse_proc_mounts();
- foreach my $mp (@$mounts) {
- my ($what, $dir, $fs) = @$mp;
- next if $fs ne 'zfs';
- # check for root-dataset of storage or any child-dataset.
- # root-dataset could have 'canmount=off'. If any child is mounted
- # heuristically assume that `zfs mount -a` was successful
- next if $what !~ m!^$dataset(?:/|$)!;
- return 1;
- }
- return 0;
- };
+ return 1 if dataset_mounted_heuristic($dataset); # early return
my $pool_imported = sub {
my @param = ('-o', 'name', '-H', $pool);
return defined($res) && $res =~ m/$pool/;
};
- if (!$dataset_mounted->()) {
- if (!$pool_imported->()) {
- # import can only be done if not yet imported!
- my @param = ('-d', '/dev/disk/by-id/', '-o', 'cachefile=none', $pool);
- eval { $class->zfs_request($scfg, undef, 'zpool_import', @param) };
- if (my $err = $@) {
- # just could've raced with another import, so recheck if it is imported
- die "could not activate storage '$storeid', $err\n" if !$pool_imported->();
- }
+ if (!$pool_imported->()) {
+ # import can only be done if not yet imported!
+ my @param = ('-d', '/dev/disk/by-id/', '-o', 'cachefile=none', $pool);
+ eval { $class->zfs_request($scfg, undef, 'zpool_import', @param) };
+ if (my $err = $@) {
+ # just could've raced with another import, so recheck if it is imported
+ die "could not activate storage '$storeid', $err\n" if !$pool_imported->();
}
- eval { $class->zfs_request($scfg, undef, 'mount', '-a') };
- die "could not activate storage '$storeid', $@\n" if $@;
}
+ eval { $class->zfs_request($scfg, undef, 'mount', '-a') };
+ die "could not activate storage '$storeid', $@\n" if $@;
return 1;
}
}
sub volume_import {
- my ($class, $scfg, $storeid, $fh, $volname, $format, $base_snapshot, $with_snapshots, $allow_rename) = @_;
+ my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots, $allow_rename) = @_;
die "unsupported import stream format for $class: $format\n"
if $format ne 'zfs';
}
sub volume_import_formats {
- my ($class, $scfg, $storeid, $volname, $base_snapshot, $with_snapshots) = @_;
+ my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_;
- return $class->volume_export_formats($scfg, $storeid, $volname, undef, $base_snapshot, $with_snapshots);
+ return $class->volume_export_formats($scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots);
}
1;
projects / pve-storage.git / blobdiff