[libvirt-users] Is virsh blockcommit supported? Thanks a lot

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Hi,

I have another question, when I do the blockcommit command and get the result " Top image as the active layer is currently unsupported ", is it being developed?
root@cvk-31:/vms/images# virsh blockcommit Vmtest /vms/images/Vmtest1;echo $?
error: internal error unable to execute QEMU command 'block-commit': Top image as the active layer is currently unsupported

1

But as I specified the commit file which is not the current image file, it will be work, such as below:
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: 18M
cluster_size: 65536
backing file: /vms/images/Vmtest1_base_1
backing file format: qcow2

image: /vms/images/Vmtest1_base_1
file format: qcow2
virtual size: 9.8G (10485760000 bytes)
disk size: 196K
cluster_size: 65536
backing file: /vms/images/Vmtest1_base
backing file format: qcow2

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/images/Vmtest1_base --top /vms/images/Vmtest1_base_1 --wait --verbose;echo $?
Block Commit: [100 %]
Commit complete
0

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