[libvirt] Domain XML isn't dumping full backing chain

Hi, I am using libvirt version 1.2.9.2 on F21 and i am unable to get the complete backing chain info in the virsh dumpxml output. Details below : *My backing chain per qemu-img :* [stack@devstack-f21 test]$ qemu-img info --backing-chain snap4.qcow2 image: snap4.qcow2 file format: qcow2 virtual size: 1.0G (1073741824 bytes) disk size: 196K cluster_size: 65536 backing file: ./snap3.qcow2 Format specific information: compat: 1.1 lazy refcounts: false image: ./snap3.qcow2 file format: qcow2 virtual size: 1.0G (1073741824 bytes) disk size: 196K cluster_size: 65536 backing file: ./snap2.qcow2 (actual path: ././snap2.qcow2) Format specific information: compat: 1.1 lazy refcounts: false image: ././snap2.qcow2 file format: qcow2 virtual size: 1.0G (1073741824 bytes) disk size: 196K cluster_size: 65536 backing file: ./snap1.qcow2 (actual path: ./././snap1.qcow2) Format specific information: compat: 1.1 lazy refcounts: false image: ./././snap1.qcow2 file format: qcow2 virtual size: 1.0G (1073741824 bytes) disk size: 196K cluster_size: 65536 backing file: ./base.qcow2 (actual path: ././././base.qcow2) Format specific information: compat: 1.1 lazy refcounts: false image: ././././base.qcow2 file format: qcow2 virtual size: 1.0G (1073741824 bytes) disk size: 196K cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: false I created 4 snapshots using commands (similar to the below, just dumping the last one here ): [stack@devstack-f21 test]$ virsh snapshot-create-as test-domain on-test-snap4 --disk-only --reuse-external --diskspec hda,snapshot=external,file=/home/stack/test/snap4.qcow2 Domain snapshot on-test-snap4 created [stack@devstack-f21 test]$ virsh domblklist test-domain Target Source ------------------------------------------------ hda /home/stack/test/snap4.qcow2 virsh dumpxml test-domain|more .... <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/home/stack/test/snap4.qcow2'/> <backingStore type='file' index='1'> <format type='raw'/> <source file='/home/stack/test/./snap3.qcow2'/> <backingStore/> </backingStore> <target dev='hda' bus='ide'/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> ..... I think thats happening beccause the backingStore format is coming as 'raw' What am i missing ? thanx, deepak