# Testing to merge <intermediate> into <base> (both are offline):
inaddy@(kvm02):~$ virsh blockcommit --domain guest
--path=/var/lib/libvirt/images/guest.1487875788
--top=/var/lib/librt/images/guest.1487745012
--base=/var/lib/libvirt/images/guest.qcow2 --wait --verbose
Block Commit: [100 %]
Commit complete
It works:
inaddy@(kvm02):~$ : virsh domblklist --domain guest
Target Source
------------------------------------------------
vda /var/lib/libvirt/images/guest.1487875788
inaddy@(kvm02):~$ sudo qemu-img info --backing-chain
/var/lib/libvirt/images/guest.1487875788
image: /var/lib/libvirt/images/guest.1487875788
file format: qcow2
virtual size: 30G (32212254720 bytes)
disk size: 2.4M
cluster_size: 65536
backing file: /var/lib/libvirt/images/guest.qcow2
backing file format: qcow2
Format specific information:
compat: 1.1
lazy refcounts: false
image: /var/lib/libvirt/images/guest.qcow2
file format: qcow2
virtual size: 30G (32212254720 bytes)
disk size: 5.0G
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: false
You can see that intermediate snapshot is gone. This means that
blockcommit can do offline merge but not when using online disk (like we
wanted to).
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https://bugs.launchpad.net/bugs/1317491
Title:
virsh blockcommit hangs at 100%
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