Am 26.07.16 um 10:25 schrieb Prof. Dr. Michael Schefczyk: > Dear All, > > using CentOS 7.2.1511, and libvirt from ovirt repositories (currently > 1.2.17-13.el7_2.5, but without otherwise using ovirt) I am regularly backing > up my VMs which are on qcow2 files. In general, I am trying to follow > http://wiki.libvirt.org/page/Live-disk-backup-with-active-blockcommit > > A typical backup script would be > > #!/bin/bash > dt=`date +%y%m%d` > if virsh dominfo dockers10a | grep -q -E '^Status: *laufend|^State: *running' > then > virsh snapshot-create-as --domain dockers10a dockers10a --diskspec > vda,file=/home/dockers10asnap.qcow2 --disk-only --no-metadata --atomic > cp /kvm01/dockers10a.qcow2 /backup/dockers10a$dt.qcow2 > virsh blockcommit dockers10a vda --active --verbose --pivot > virsh snapshot-delete dockers10a dockers10a > rm /home/dockers10asnap.qcow2 > fi > > I am fully aware that the third line from the end "virsh snapshot-delete ..." > will fail under regular circumstances. It is just there as a precaution to > delete unnecessary snapshots should a previous backup have failed. > > For some time, I am noticing that from time to time backup fails in the way > that the xml definition file of the VM backed up keeps the temporary file (in > the example above /home/dockers10asnap.qcow2) as the source file. Then, at > least upon rebooting the host, it will be unable to restart the VM. In > addition, lots of other troubles can arise (following backups failing, > storage issues). > > I am using a similar setup on four hosts. It seems that the better the > resources of the host are, the lower the likelihood of the problem occurring > - but that cannot be an acceptable state. > > Can someone please point me to how to avoid this?
Here is what i do. I check the VM if it is running from a snapshot first. if [[ $(virsh domblklist vmmachinename) = *weekly* ]]; then echo "Found activ snapshot vmmachinename" | mail -s "Found activ snapshot vmmachinename" emailaddress else cheers t. > Regards, > > Michael Schefczyk > > > > > > _______________________________________________ > libvirt-users mailing list > libvirt-users@redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users > _______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
