[pve-devel] [RFC qemu-server 16/16] Update volume IDs in one go

[Fabian Ebner]

Use 'update_volume_ids' for the live-migrated disks as well.

Signed-off-by: Fabian Ebner <f.ebner at proxmox.com>
---
 PVE/QemuMigrate.pm | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/PVE/QemuMigrate.pm b/PVE/QemuMigrate.pm
index af1cf01..6a0f034 100644
--- a/PVE/QemuMigrate.pm
+++ b/PVE/QemuMigrate.pm
@@ -628,6 +628,13 @@ sub phase2 {
 	    $self->{target_drive}->{$targetdrive}->{drivestr} = $drivestr;
 	    $self->{target_drive}->{$targetdrive}->{nbd_uri} = $nbd_uri;
 
+	    my $current_drive = PVE::QemuServer::parse_drive($targetdrive, $conf->{$targetdrive});
+	    my $new_drive = PVE::QemuServer::parse_drive($targetdrive, $drivestr);
+	    my $current_volid = $current_drive->{file};
+	    my $new_volid = $new_drive->{file};
+	    $self->{volume_map}->{$current_volid} = $new_volid if $current_volid ne $new_volid;
+	    $self->log('info', "volume '$current_volid' is '$new_volid' on the target\n");
+
 	} elsif ($line =~ m/^QEMU: (.*)$/) {
 	    $self->log('info', "[$self->{node}] $1\n");
 	}
@@ -963,13 +970,6 @@ sub phase3_cleanup {
 
     my $tunnel = $self->{tunnel};
 
-    # Needs to happen before printing the drives that where migrated via qemu,
-    # since a new volume on the target might have the same ID as an old volume
-    # on the source and update_volume_ids relies on matching IDs in the config.
-    if ($self->{volume_map}) {
-	$conf = PVE::QemuConfig->update_volume_ids($conf, $self->{volume_map});
-    }
-
     if ($self->{storage_migration}) {
 	# finish block-job
 	eval { PVE::QemuServer::qemu_drive_mirror_monitor($vmid, undef, $self->{storage_migration_jobs}); };
@@ -978,16 +978,11 @@ sub phase3_cleanup {
 	    eval { PVE::QemuServer::qemu_blockjobs_cancel($vmid, $self->{storage_migration_jobs}) };
 	    eval { PVE::QemuMigrate::cleanup_remotedisks($self) };
 	    die "Failed to complete storage migration: $err\n";
-	} else {
-	    foreach my $target_drive (keys %{$self->{target_drive}}) {
-		my $drive = PVE::QemuServer::parse_drive($target_drive, $self->{target_drive}->{$target_drive}->{drivestr});
-		$conf->{$target_drive} = PVE::QemuServer::print_drive($drive);
-	    }
 	}
     }
 
-    # only write after successfully completing the migration
-    if ($self->{volume_map} || $self->{storage_migration}) {
+    if ($self->{volume_map}) {
+	$conf = PVE::QemuConfig->update_volume_ids($conf, $self->{volume_map});
 	PVE::QemuConfig->write_config($vmid, $conf);
     }
 
-- 
2.20.1