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migrate: snapshot parameter for use with replication

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This commit is contained in:
Wolfgang Bumiller
2017-05-22 10:16:21 +02:00
committed by Dietmar Maurer
parent 55f908a1cd
commit dc7695377c
1 changed files with 22 additions and 9 deletions
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31
PVE/Storage.pm
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@ -525,7 +525,7 @@ sub abs_filesystem_path {
}
sub storage_migrate {
my ($cfg, $volid, $target_host, $target_storeid, $target_volname, $base_snapshot) = @_;
my ($cfg, $volid, $target_host, $target_storeid, $target_volname, $base_snapshot, $snapshot) = @_;
my ($storeid, $volname) = parse_volume_id($volid);
$target_volname = $volname if !$target_volname;
@ -551,10 +551,17 @@ sub storage_migrate {
die "incremental migration not supported on storage type $type\n"
if defined($base_snapshot);
};
my $no_snapshot = sub {
my ($type) = @_;
# $snapshot is currently only used by replication
die "replicating storage migration not supported on storage type $type\n"
if defined($snapshot);
};
# only implemented for file system based storage
if ($scfg->{path}) {
$no_incremental->($scfg->{type});
$no_snapshot->($scfg->{type});
if ($tcfg->{path}) {
my $src_plugin = PVE::Storage::Plugin->lookup($scfg->{type});
@ -622,16 +629,19 @@ sub storage_migrate {
die "$errstr - pool on target does not have the same name as on source!"
if $tcfg->{pool} ne $scfg->{pool};
my $snapname = $snapshot // '__migration__';
my (undef, $volname) = parse_volname($cfg, $volid);
my $zfspath = "$scfg->{pool}\/$volname";
my @formats = volume_transfer_formats($cfg, $volid, $volid, '__migration__', $base_snapshot, 1);
my @formats = volume_transfer_formats($cfg, $volid, $volid, $snapname, $base_snapshot, 1);
die "cannot migrate from storage type '$scfg->{type}' to '$tcfg->{type}'\n" if !@formats;
my $format = $formats[0];
my $send = ['pvesm', 'export', $volid, $format, '-', '-snapshot', '__migration__', '-with-snapshots', '1'];
my $send = ['pvesm', 'export', $volid, $format, '-', '-snapshot', $snapname, '-with-snapshots', '1'];
my $recv = ['ssh', "root\@$target_host", '--', 'pvesm', 'import', $volid, $format, '-', '-with-snapshots', '1'];
my $free = ['ssh', "root\@$target_host", '--', 'pvesm', 'free', $volid, '-snapshot', '__migration__'];
my $free = ['ssh', "root\@$target_host", '--', 'pvesm', 'free', $volid, '-snapshot', $snapname]
if !defined($snapshot);
if (defined($base_snapshot)) {
# Check if the snapshot exists on the remote side:
@ -639,16 +649,18 @@ sub storage_migrate {
push @$recv, '-base', $base_snapshot;
}
volume_snapshot($cfg, $volid, '__migration__');
volume_snapshot($cfg, $volid, $snapname);
eval {
run_command([$send, $recv]);
};
my $err = $@;
warn "send/receive failed, cleaning up snapshot(s)..\n" if $err;
eval { volume_snapshot_delete($cfg, $volid, '__migration__', 0) };
warn "could not remove source snapshot: $@\n" if $@;
eval { run_command($free) };
warn "could not remove target snapshot: $@\n" if $@;
if (!defined($snapshot)) {
eval { volume_snapshot_delete($cfg, $volid, $snapname, 0) };
warn "could not remove source snapshot: $@\n" if $@;
eval { run_command($free) };
warn "could not remove target snapshot: $@\n" if $@;
}
die $err if $err;
} else {
die "$errstr - target type $tcfg->{type} is not valid\n";
@ -656,6 +668,7 @@ sub storage_migrate {
} elsif ($scfg->{type} eq 'lvmthin' || $scfg->{type} eq 'lvm') {
$no_incremental->($scfg->{type});
$no_snapshot->($scfg->{type});
if (($scfg->{type} eq $tcfg->{type}) &&
($tcfg->{type} eq 'lvmthin' || $tcfg->{type} eq 'lvm')) {