On Thu, Jul 28, 2016 at 10:59 AM, Erlon Cruz <sombrafam(a)gmail.com&gt; wrote: > Hi folks, > > I'm having a issue in the standard NFS driver on OpenStack, that uses > qemu-img and libvirt to create snapshots of volumes. It uses qemu-img in > the Controller to manage the snapshots when the volume is not attached > (offline) or calls the Compute (which calls libvirt) to manage snapshots if > the volume is attached (online). When I try to create/delete snapshots from > a snapshot chain. There are 3 situations: > > 1 - I create/delete the snapshots in Cinder (it uses qemu-img). It goes > OK! I can delete and I can create snapshots. > 2 - I create/delete the snapshots, in online mode (it uses libvirt). It > goes Ok, as weel. > 3 - I create the snapshots in Cinder (offline) and delete then in online > mode (using libvirt), then it fails with this message[1]: > > libvirtError: invalid argument: could not find image > 'volume-13cb83a2-880f-40e8-b60e-7e805eed76f9.d024731c-bdc3-4943-91c0-215a93ee2cf4' > in chain for '/opt/stack/data/nova/mnt/a3b4c6ddd9bf82edd4f726872be58d > 05/volume-13cb83a2-880f-40e8-b60e-7e805eed76f9' > > But, in this folder, there the backing files are there[2] and they are > chained as think it suppose to be[3]. > > The version for the 2 hosts in tests are: > Controller/Cinder node: qemu-img version 2.0.0 && libvirt 1.2.2-0ubuntu13 > Compute node: qemu-img version 2.5.0 && libvirt-1.3.1-1ubuntu10 > > Is there any compatibility problem between libvirt and qemu-img > snapshots? Have you guys found any problem like that? > > Erlon > ---------------------------------- > > > [1] http://paste.openstack.org/show/543270/ > [2] http://paste.openstack.org/show/543273/ > [3] http://paste.openstack.org/show/543274/ >