Re: [ovirt-users] critical production issue for a vm

Le 06/12/2017 à 11:21, Nathanaël Blanchet a écrit : > Hi all, > > I'm about to lose one very important vm. I shut down this vm for > maintenance and then I moved the four disks to a new created lun. This vm > has 2 snapshots. > > After successful move, the vm refuses to start with this message: > > Bad volume specification {u'index': 0, u'domainID': > u'961ea94a-aced-4dd0-a9f0-266ce1810177', 'reqsize': '0', u'format': > u'cow', u'bootOrder': u'1', u'discard': False, u'volumeID': > u'a0b6d5cb-db1e-4c25-aaaf-1bbee142c60b', 'apparentsize': '2147483648 > <(214)%20748-3648>', u'imageID': u'4a95614e-bf1d-407c-aa72-2df414abcb7a', > u'specParams': {}, u'readonly': u'false', u'iface': u'virtio', u'optional': > u'false', u'deviceId': u'4a95614e-bf1d-407c-aa72-2df414abcb7a', > 'truesize': '2147483648 <(214)%20748-3648>', u'poolID': > u'48ca3019-9dbf-4ef3-98e9-08105d396350', u'device': u'disk', u'shared': > u'false', u'propagateErrors': u'off', u'type': u'disk'}. > > I tried to merge the snaphots, export , clone from snapshot, copy disks, > or deactivate disks and every action fails when it is about disk. > > I began to dd lv group to get a new vm intended to a standalone > libvirt/kvm, the vm quite boots up but it is an outdated version before the > first snapshot. There is a lot of disks when doing a "lvs | grep 961ea94a" > supposed to be disks snapshots. Which of them must I choose to get the last > vm before shutting down? I'm not used to deal snapshot with virsh/libvirt, > so some help will be much appreciated. >

> Is there some unknown command to recover this vm into ovirt? > > Thank you in advance. > > >

> _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > > Beside specific oVirt answers, did you try to get informations about the snapshot tree with qemu-img info --backing-chain on the adequate /dev/... logical volume? As you know how to dd from LVs, you could extract every needed snapshots files and rebuild your VM outside of oVirt. Then take time to re-import it later and safely. -- Nicolas ECARNOT _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users