try snapshot-create-as like below: virsh snapshot-create-as vm --disk-only --diskspec "vda,snapshot=external"
2013/6/25 cmcc.dylan <dx10ye...@126.com> > > Hi, everyone, > I have found the API snapshotCreateXML() can create a snapshot for a > virtual machine, and the xml configuration file - snapshot.xml as folllows: > <domainsnapshot> > <name>snapshot01</name> > <description>Snapshot of OS install and updates</description> > <disks> > <disk name='vda' snapshot='external'> > <source file='/data10/snapshot'/> > </disk> > </disks> > </domainsnapshot> > > How can I use the API or could I use "snapshot-create" ? > I try "virsh snapshot-create domain_name snapshot.xml", but I report an > error: error: unsupported configuration: disk 'vda' must use snapshot > mode 'internal'. > What's the probem? I feel crazy now. > Could someone give me a sucessfule example? > > > > > > At 2013-06-25 16:46:32,"cmcc.dylan" <dx10ye...@126.com> wrote: > > Thanks for you reply! > Firstly, I'm very sorry I forgot introduce the scenarios in my > experiments. Supposing a case, I have a virtual machine with two disks. One > is mounted as a root partition and the other is data partition and the > second disk is an iscsi lun, that is to say, not a local disk or image. Now > the result wanted is that creating a snapshot for the root disk but not for > the data disk when executing "virsh snapshot-create-as" command. Actually, > it meet an error: > error:unsuported configuration: source for disk 'vdc' is not a > regular file; refusing to generate external snapshot name. > The xml configuration of this virtual machine as follows: > <disk type='block' device='disk'> > <driver name='qemu' type='raw' /> > <source dev='/dev/sdm1' > // sdm1 is a remote > scsi lun and mounted at the local host > <target dev='vdc' bus='virtio' /> > </disk> > Given above problem, I want to only create the snapshot of local disk. > > > > 在 2013-06-24 23:22:47，"vonNieda, Adam (USMS)" <adam.vonni...@usdoj.gov> > 写道： > > ** ** > > I think what you’re looking for is LVM snapshots. The whole purpose of > taking VM snapshots is to have a consistent image of the machine as a > whole. There’s lots of articles out there on LVM snapshots, here’s one. ** > ** > > ** ** > > http://www.tldp.org/HOWTO/LVM-HOWTO/snapshots_backup.html**** > > ** ** > > *From:* libvirt-users-boun...@redhat.com [mailto: > libvirt-users-boun...@redhat.com] *On Behalf Of *cmcc.dylan > *Sent:* Saturday, June 22, 2013 11:13 AM > *To:* libvirt-users@redhat.com > *Subject:* [libvirt-users] snapshot-create-as for a single disk not all > disks**** > > ** ** > > Hi everyone!**** > > Is there any way to create snaphot for a single disk of a virtual > machine. As I konw, "virsh snapshot-create-as domain_name snapshot_name > --disk-only" traverses all block devices to create snapshot. However I > don't want to create snapshot except for root partition.**** > > The version of qemu and libvirt I used is as follows:**** > > qemu-1.4.2 and libvrit-0.10.2**** > > I meet an error when I delete the snapshot which is created by > "snapshot-create-as" command. whether or not qemu(1.4.2) and > libvirt(0.10.2) don't support the function currently.**** > > ** ** > > Look forward to your help!**** > > ** ** > > > > > > > _______________________________________________ > libvirt-users mailing list > libvirt-users@redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users >
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