[libvirt] [PATCH 03/11] qemu: backup: Configure backup store image with backing file
In contrast to snapshots the backup job does not complain when the
backup job's store file has backing pre-configured. It's actually
required so that the NBD server exposes all the data properly.
Remove our fake termination and use the existing disk source as backing.
Signed-off-by: Peter Krempa <pkrempa(a)redhat.com>
---
src/qemu/qemu_backup.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/src/qemu/qemu_backup.c b/src/qemu/qemu_backup.c
index 294d5999a0..de4730441b 100644
--- a/src/qemu/qemu_backup.c
+++ b/src/qemu/qemu_backup.c
@@ -302,7 +302,6 @@ qemuBackupDiskPrepareDataOne(virDomainObjPtr vm,
bool removeStore)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
- g_autoptr(virStorageSource) terminator = NULL;
/* set data structure */
dd->backupdisk = backupdisk;
@@ -331,17 +330,14 @@ qemuBackupDiskPrepareDataOne(virDomainObjPtr vm,
return -1;
}
- /* install terminator to prevent qemu form opening backing images */
- if (!(terminator = virStorageSourceNew()))
- return -1;
-
if (!(dd->blockjob = qemuBlockJobDiskNewBackup(vm, dd->domdisk, dd->store,
removeStore,
dd->incrementalBitmap)))
return -1;
+ /* use original disk as backing to prevent opening the backing chain */
if (!(dd->crdata =
qemuBuildStorageSourceChainAttachPrepareBlockdevTop(dd->store,
- terminator,
+
dd->domdisk->src,
priv->qemuCaps)))
return -1;
--
2.23.0