Re: [libvirt-users] snapshot of running vm's

Dominique wrote: Having this configuration in the xml it worked: <channel type='unix' <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/sles11.org.qemu.guest_agent.0'/ <target type='virtio' name='org.qemu.guest_agent.0'/ <address type='virtio-serial' controller='0' bus='0' port='2'/ </channel The file exists now: srwxrwxr-x 1 root root 0 Dec 3 14:15 /var/lib/libvirt/qemu/channel/target/sles11.org.qemu.guest_agent.0= I had to add the directories channel and target. VM is starting fine, snapshot is possible. But still some slight problems: virsh # snapshot-create-as --domain sles11 --name sn_sles11 --atomic --disk-only --live --quiesce error: Operation not supported: live snapshot creation is supported only with external checkpoints I thought --disk-only would create external snapshots ? virsh # snapshot-create-as --domain sles11 --name sn_sles11 --atomic --disk-only --live --quiesce --diskspec vdb,snapshot=external error: Operation not supported: live snapshot creation is supported only with external checkpoints Hm. Specifying external explicitely also does not help. virsh # snapshot-create-as --domain sles11 --name sn_sles11 --atomic --disk-only --quiesce --diskspec vdb,snapshot=external,file=/var/lib/kvm/images/sles11/sn_disk0.qcow2 Domain snapshot sn_sles11 created Omitting --live is the key. But I thought I need it because i'm snapshotting a running vm ? I still have 1.2.5. I tried to blockcommit: virsh # blockcommit sles11 vdb --path /var/lib/kvm/images/sles11/sn_disk0.qcow2 --wait --verbose --delete error: option --path already seen what does that mean ? virsh # blockcommit sles11 --path /var/lib/kvm/images/sles11/sn_disk0.qcow2 --wait --verbose --delete error: unsupported flags (0x2) in function qemuDomainBlockCommit virsh # blockcommit sles11 --path /var/lib/kvm/images/sles11/sn_disk0.qcow2 --wait --verbose error: Operation not supported: committing the active layer not supported yet Ok. Omitting --delete removes one error, but now I have another one. What means "not supported yet" ? Does that mean I have a software which offers blockcommit in the help, but it is not completely implemented ? virsh # blockcommit sles11 --path /var/lib/kvm/images/sles11/sn_disk0.raw --wait --verbose error: invalid argument: No device found for specified path Which path do I have to provide ? The one to the base or the one to the snapshot ? I tried both, but not working. Do I have all these problems because I'm using 1.2.5 ? That's the official version of libvirt which is included by SuSE for SLES 11 SP4. But it's lacking functionality which is offered in the help ? Oh my god. Bernd Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) Ingolstaedter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Dr. Nikolaus Blum, Dr. Alfons Enhsen Registergericht: Amtsgericht Muenchen HRB 6466 USt-IdNr: DE 129521671