I had test the command virsh blockcommit, but it failed, with the libvirt version 1.1.0, and qemu version 1.6.0.

Is this feature being developing? Thanks

 

root@cvk-31:/vms/images# virsh -v

1.1.0

root@cvk-31:/vms/images# qemu-img -V

qemu-img version 1.6.0, Copyright (c) 2004-2008 Fabrice Bellard

usage: qemu-img command [command options]

 

 

root@cvk-31:/vms/images# virsh blockcommit Vmtest /vms/images/Vmtest1 --base /vms/image

s/Vmtest1_base --top /vms/images/Vmtest1_base_1 --wait --verbose ;echo $?

error: invalid argument: top '/vms/images/Vmtest1_base_1' in chain for '/vms/images/Vmtest1' has no backing file

 

1

root@cvk-31:/vms/images# qemu-img info /vms/images/Vmtest1_base_1

image: /vms/images/Vmtest1_base_1

file format: qcow2

virtual size: 9.8G (10485760000 bytes)

disk size: 6.0M

cluster_size: 2097152

backing file: /vms/images/Vmtest1_base

 

root@cvk-31:/vms/images# qemu-img info --backing-chain /vms/images/Vmtest1

image: /vms/images/Vmtest1

file format: qcow2

virtual size: 9.8G (10485760000 bytes)

disk size: 140M

cluster_size: 2097152

backing file: /vms/images/Vmtest1_base_1

 

image: /vms/images/Vmtest1_base_1

file format: qcow2

virtual size: 9.8G (10485760000 bytes)

disk size: 6.0M

cluster_size: 2097152

backing file: /vms/images/Vmtest1_base

 

image: /vms/images/Vmtest1_base

file format: qcow2

virtual size: 9.8G (10485760000 bytes)

disk size: 3.4G

cluster_size: 2097152

 

 

root@cvk-31:/vms/images# virsh blockcommit Vmtest /vms/images/Vmtest1 --base /vms/image

s/Vmtest1_base --wait --verbose ;echo $?

error: invalid argument: could not find base '/vms/images/Vmtest1_base' below '/vms/images/Vmtest1' in chain for '/vms/images/Vmtest1'

 

1

root@cvk-31:/vms/images# ls -al /vms/images/Vmtest1_base

-rw------- 1 root root 3705667584 Aug 23 10:19 /vms/images/Vmtest1_base

root@cvk-31:/vms/images# qemu-img info /vms/images/Vmtest1_base

image: /vms/images/Vmtest1_base

file format: qcow2

virtual size: 9.8G (10485760000 bytes)

disk size: 3.4G

cluster_size: 2097152

 

 

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