[libvirt-users] [Resolved] Re: virsh blockcopy: doesn't seem to flatten the chain by default

On Thu, Jul 03, 2014 at 05:07:40PM +0800, shyu wrote: [. . ] Okay, I clearly must have done something wrong during guestfish disk creations plus a mix of libvirt/QEMU manipulations (backing chains were created using `qemu-img`). If I consistently use libvirt across the board, it, of course, works fine. I just did a retest by building libvirt & QEMU from git: libvirt: $ git rev-parse --short HEAD && git describe 5098f67 v1.2.6-9-g5098f67 QEMU: $ git rev-parse --short HEAD && git describe 92259b7 v2.1.0-rc0 Test w/ a Fedora-20 image ------------------------- Start the guest: $ virsh start vm1 Make it transient: $ virsh dumpxml --inactive vm1 > /var/tmp/vm1.xml [Add some content into base.qcow2] Take a live, external disk-only snapshot: $ virsh snapshot-create-as \ --domain vm1 snap1 snap1-with-foo \ --diskspec vda,file=/export/images/snap1.qcow2 \ --disk-only [Add some content into snap1.qcow2] Perform live blockcopy and finish the mirroring gracefully: $ virsh blockcopy \ --domain vm1 \ --path vda /export/images/copy.qcow2 \ --wait --verbose --finish [Examine copy.qcow2 contents - it should reflect all content] Define the guest to make it persistent again: $ virsh define /var/tmp/vm1.xml -- /kashyap