use PVE::Tools qw(run_command);
use PVE::Storage::Plugin;
use PVE::RPCEnvironment;
+use Net::IP;
use base qw(PVE::Storage::Plugin);
nodes => { optional => 1 },
disable => { optional => 1 },
content => { optional => 1 },
+ bwlimit => { optional => 1 },
};
}
sub zfs_request {
my ($class, $scfg, $timeout, $method, @params) = @_;
- $timeout = PVE::RPCEnvironment::is_worker() ? 60*60 : 5
- if !$timeout;
-
my $cmd = [];
if ($method eq 'zpool_list') {
push @$cmd, 'zpool', 'list';
+ } elsif ($method eq 'zpool_import') {
+ push @$cmd, 'zpool', 'import';
+ $timeout = 15 if !$timeout || $timeout < 15;
} else {
push @$cmd, 'zfs', $method;
}
-
push @$cmd, @params;
-
+
my $msg = '';
+ my $output = sub { $msg .= "$_[0]\n" };
- my $output = sub {
- my $line = shift;
- $msg .= "$line\n";
- };
+ $timeout = PVE::RPCEnvironment->is_worker() ? 60*60 : 5 if !$timeout;
run_command($cmd, errmsg => "zfs error", outfunc => $output, timeout => $timeout);
return $msg;
}
+sub zfs_wait_for_zvol_link {
+ my ($class, $scfg, $volname, $timeout) = @_;
+
+ my $default_timeout = PVE::RPCEnvironment->is_worker() ? 60*5 : 10;
+ $timeout = $default_timeout if !defined($timeout);
+
+ my ($devname, undef, undef) = $class->path($scfg, $volname);
+
+ for (my $i = 1; $i <= $timeout; $i++) {
+ last if -b $devname;
+ die "timeout: no zvol device link for '$volname' found after $timeout sec found.\n"
+ if $i == $timeout;
+
+ sleep(1);
+ }
+}
+
sub alloc_image {
my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_;
if ($fmt eq 'raw') {
- die "illegal name '$volname' - sould be 'vm-$vmid-*'\n"
+ die "illegal name '$volname' - should be 'vm-$vmid-*'\n"
if $volname && $volname !~ m/^vm-$vmid-/;
$volname = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $fmt)
if !$volname;
$class->zfs_create_zvol($scfg, $volname, $size);
- my $devname = "/dev/zvol/$scfg->{pool}/$volname";
-
- run_command("udevadm trigger --subsystem-match block");
- system('udevadm', 'settle', '--timeout', '10', "--exit-if-exists=${devname}");
+ $class->zfs_wait_for_zvol_link($scfg, $volname);
} elsif ( $fmt eq 'subvol') {
- die "illegal name '$volname' - sould be 'subvol-$vmid-*'\n"
+ die "illegal name '$volname' - should be 'subvol-$vmid-*'\n"
if $volname && $volname !~ m/^subvol-$vmid-/;
$volname = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $fmt)
if !$volname;
- die "illegal name '$volname' - sould be 'subvol-$vmid-*'\n"
+ die "illegal name '$volname' - should be 'subvol-$vmid-*'\n"
if $volname !~ m/^subvol-$vmid-/;
$class->zfs_create_subvol($scfg, $volname, $size);
foreach my $image (keys %$dat) {
- my $volname = $dat->{$image}->{name};
- my $parent = $dat->{$image}->{parent};
+ my $info = $dat->{$image};
+
+ my $volname = $info->{name};
+ my $parent = $info->{parent};
+ my $owner = $info->{vmid};
- my $volid = undef;
- if ($parent && $parent =~ m/^(\S+)@(\S+)$/) {
+ if ($parent && $parent =~ m/^(\S+)\@__base__$/) {
my ($basename) = ($1);
- $volid = "$storeid:$basename/$volname";
+ $info->{volid} = "$storeid:$basename/$volname";
} else {
- $volid = "$storeid:$volname";
+ $info->{volid} = "$storeid:$volname";
}
- my $owner = $dat->{$volname}->{vmid};
if ($vollist) {
- my $found = grep { $_ eq $volid } @$vollist;
+ my $found = grep { $_ eq $info->{volid} } @$vollist;
next if !$found;
} else {
next if defined ($vmid) && ($owner ne $vmid);
}
- my $info = $dat->{$volname};
- $info->{volid} = $volid;
push @$res, $info;
}
}
sub zfs_create_zvol {
my ($class, $scfg, $zvol, $size) = @_;
-
+
+ # always align size to 1M as workaround until
+ # https://github.com/zfsonlinux/zfs/issues/8541 is solved
+ my $padding = (1024 - $size % 1024) % 1024;
+ $size = $size + $padding;
+
my $cmd = ['create'];
push @$cmd, '-s' if $scfg->{sparse};
sub zfs_find_free_diskname {
my ($class, $storeid, $scfg, $vmid, $format) = @_;
- my $name = undef;
my $volumes = $class->zfs_list_zvol($scfg);
-
- my $disk_ids = {};
my $dat = $volumes->{$scfg->{pool}};
- foreach my $image (keys %$dat) {
- my $volname = $dat->{$image}->{name};
- if ($volname =~ m/(vm|base|subvol|basevol)-$vmid-disk-(\d+)/){
- $disk_ids->{$2} = 1;
- }
- }
-
- for (my $i = 1; $i < 100; $i++) {
- if (!$disk_ids->{$i}) {
- return $format eq 'subvol' ? "subvol-$vmid-disk-$i" : "vm-$vmid-disk-$i";
- }
- }
-
- die "unable to allocate an image name for VM $vmid in storage '$storeid'\n";
+ my $disk_list = [ keys %$dat ];
+ return PVE::Storage::Plugin::get_next_vm_diskname($disk_list, $storeid, $vmid, $format, $scfg);
}
sub zfs_get_latest_snapshot {
return 1;
}
-sub activate_storage {
- my ($class, $storeid, $scfg, $cache) = @_;
+sub volume_snapshot_list {
+ my ($class, $scfg, $storeid, $volname) = @_;
+
+ my ($vtype, $name, $vmid) = $class->parse_volname($volname);
+
+ my $zpath = "$scfg->{pool}/$name";
+
+ my $snaps = [];
+
+ my $cmd = ['zfs', 'list', '-r', '-H', '-S', 'name', '-t', 'snap', '-o',
+ 'name', $zpath];
- my @param = ('-o', 'name', '-H');
+ my $outfunc = sub {
+ my $line = shift;
- my $text = $class->zfs_request($scfg, undef, 'zpool_list', @param);
+ if ($line =~ m/^\Q$zpath\E@(.*)$/) {
+ push @$snaps, $1;
+ }
+ };
+
+ eval { run_command( [$cmd], outfunc => $outfunc , errfunc => sub{}); };
+
+ # return an empty array if dataset does not exist.
+ return $snaps;
+}
+
+sub activate_storage {
+ my ($class, $storeid, $scfg, $cache) = @_;
# Note: $scfg->{pool} can include dataset <pool>/<dataset>
my $pool = $scfg->{pool};
$pool =~ s!/.*$!!;
- if ($text !~ $pool) {
- run_command("zpool import -d /dev/disk/by-id/ -a");
+ my $pool_imported = sub {
+ my @param = ('-o', 'name', '-H', "$pool");
+ my $res = eval { $class->zfs_request($scfg, undef, 'zpool_list', @param) };
+ if ($@) {
+ warn "$@\n";
+ return undef;
+ }
+ return defined($res) && $res =~ m/$pool/;
+ };
+
+ 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', $@\n" if !$pool_imported->();
+ }
}
return 1;
}
sub activate_volume {
my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
+
+ return 1 if defined($snapname);
+
+ my (undef, undef, undef, undef, undef, undef, $format) = $class->parse_volname($volname);
+
+ return 1 if $format ne 'raw';
+
+ $class->zfs_wait_for_zvol_link($scfg, $volname);
+
return 1;
}
return $new_size;
}
+sub storage_can_replicate {
+ my ($class, $scfg, $storeid, $format) = @_;
+
+ return 1 if $format eq 'raw' || $format eq 'subvol';
+
+ return 0;
+}
+
sub volume_has_feature {
my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_;
template => { current => 1},
copy => { base => 1, current => 1},
sparseinit => { base => 1, current => 1},
+ replicate => { base => 1, current => 1},
};
my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) =
return undef;
}
+sub volume_export {
+ my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots) = @_;
+
+ die "unsupported export stream format for $class: $format\n"
+ if $format ne 'zfs';
+
+ die "$class storage can only export snapshots\n"
+ if !defined($snapshot);
+
+ my $dataset = ($class->parse_volname($volname))[1];
+
+ my $fd = fileno($fh);
+ die "internal error: invalid file handle for volume_export\n"
+ if !defined($fd);
+ $fd = ">&$fd";
+
+ # For zfs we always create a replication stream (-R) which means the remote
+ # side will always delete non-existing source snapshots. This should work
+ # for all our use cases.
+ my $cmd = ['zfs', 'send', '-Rpv'];
+ if (defined($base_snapshot)) {
+ my $arg = $with_snapshots ? '-I' : '-i';
+ push @$cmd, $arg, $base_snapshot;
+ }
+ push @$cmd, '--', "$scfg->{pool}/$dataset\@$snapshot";
+
+ run_command($cmd, output => $fd);
+
+ return;
+}
+
+sub volume_export_formats {
+ my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_;
+
+ my @formats = ('zfs');
+ # TODOs:
+ # push @formats, 'fies' if $volname !~ /^(?:basevol|subvol)-/;
+ # push @formats, 'raw' if !$base_snapshot && !$with_snapshots;
+ return @formats;
+}
+
+sub volume_import {
+ my ($class, $scfg, $storeid, $fh, $volname, $format, $base_snapshot, $with_snapshots) = @_;
+
+ die "unsupported import stream format for $class: $format\n"
+ if $format ne 'zfs';
+
+ my $fd = fileno($fh);
+ die "internal error: invalid file handle for volume_import\n"
+ if !defined($fd);
+
+ my $dataset = ($class->parse_volname($volname))[1];
+ my $zfspath = "$scfg->{pool}/$dataset";
+ my $suffix = defined($base_snapshot) ? "\@$base_snapshot" : '';
+ my $exists = 0 == run_command(['zfs', 'get', '-H', 'name', $zfspath.$suffix],
+ noerr => 1, errfunc => sub {});
+ if (defined($base_snapshot)) {
+ die "base snapshot '$zfspath\@$base_snapshot' doesn't exist\n" if !$exists;
+ } else {
+ die "volume '$zfspath' already exists\n" if $exists;
+ }
+
+ eval { run_command(['zfs', 'recv', '-F', '--', $zfspath], input => "<&$fd") };
+ if (my $err = $@) {
+ if (defined($base_snapshot)) {
+ eval { run_command(['zfs', 'rollback', '-r', '--', "$zfspath\@$base_snapshot"]) };
+ } else {
+ eval { run_command(['zfs', 'destroy', '-r', '--', $zfspath]) };
+ }
+ die $err;
+ }
+
+ return;
+}
+
+sub volume_import_formats {
+ my ($class, $scfg, $storeid, $volname, $base_snapshot, $with_snapshots) = @_;
+
+ return $class->volume_export_formats($scfg, $storeid, $volname, undef, $base_snapshot, $with_snapshots);
+}
+
1;
projects / pve-storage.git / blobdiff