From 5ad1a4345725b7d73dca31ceb44dd96a022c9e25 Mon Sep 17 00:00:00 2001
From: abh1sar <abhisar.sinha@gmail.com>
Date: Sat, 10 May 2025 20:15:34 +0530
Subject: [PATCH] Restore single backed-up volume on a live instance attaches
 the volume as a Raw image making it unreadable

---
 .../java/org/apache/cloudstack/backup/NASBackupProvider.java    | 2 ++
 .../resource/wrapper/LibvirtRestoreBackupCommandWrapper.java    | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/plugins/backup/nas/src/main/java/org/apache/cloudstack/backup/NASBackupProvider.java b/plugins/backup/nas/src/main/java/org/apache/cloudstack/backup/NASBackupProvider.java
index 4b5f724f7efe..141a0073498f 100644
--- a/plugins/backup/nas/src/main/java/org/apache/cloudstack/backup/NASBackupProvider.java
+++ b/plugins/backup/nas/src/main/java/org/apache/cloudstack/backup/NASBackupProvider.java
@@ -26,6 +26,7 @@
 import com.cloud.host.dao.HostDao;
 import com.cloud.hypervisor.Hypervisor;
 import com.cloud.storage.ScopeType;
+import com.cloud.storage.Storage;
 import com.cloud.storage.StoragePoolHostVO;
 import com.cloud.storage.Volume;
 import com.cloud.storage.VolumeVO;
@@ -280,6 +281,7 @@ public Pair<Boolean, String> restoreBackedUpVolume(Backup backup, String volumeU
         restoredVolume.setPoolId(dataStore.getPoolId());
         restoredVolume.setPath(restoredVolume.getUuid());
         restoredVolume.setState(Volume.State.Copying);
+        restoredVolume.setFormat(Storage.ImageFormat.QCOW2);
         restoredVolume.setSize(backedUpVolumeSize);
         restoredVolume.setDiskOfferingId(volume.getDiskOfferingId());
 
diff --git a/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtRestoreBackupCommandWrapper.java b/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtRestoreBackupCommandWrapper.java
index 49b671943561..e84b8956f731 100644
--- a/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtRestoreBackupCommandWrapper.java
+++ b/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtRestoreBackupCommandWrapper.java
@@ -45,7 +45,7 @@ public class LibvirtRestoreBackupCommandWrapper extends CommandWrapper<RestoreBa
     private static final String MOUNT_COMMAND = "sudo mount -t %s %s %s";
     private static final String UMOUNT_COMMAND = "sudo umount %s";
     private static final String FILE_PATH_PLACEHOLDER = "%s/%s";
-    private static final String ATTACH_DISK_COMMAND = " virsh attach-disk %s %s %s --cache none";
+    private static final String ATTACH_DISK_COMMAND = " virsh attach-disk %s %s %s --driver qemu --subdriver qcow2 --cache none";
     private static final String CURRRENT_DEVICE = "virsh domblklist --domain %s | tail -n 3 | head -n 1 | awk '{print $1}'";
     private static final String RSYNC_COMMAND = "rsync -az %s %s";