Le 06/12/2017 à 15:56, Maor Lipchuk a écrit :
On Wed, Dec 6, 2017 at 12:30 PM, Nicolas Ecarnot <nico...@ecarnot.net
<mailto:nico...@ecarnot.net>> wrote:
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 <tel:%28214%29%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 <tel:%28214%29%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outdated version before the first snapshot.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.
The disks which you want to copy should contain the entire volume chain.
Based on the log you mentioned, It looks like this image is problematic:
storage id: '961ea94a-aced-4dd0-a9f0-266ce1810177',
imageID': u'4a95614e-bf1d-407c-aa72-2df414abcb7a
volumeID': u'a0b6d5cb-db1e-4c25-aaaf-1bbee142c60b'
What if you try to deactivate this image and try to run the VM, will
it run?
I already tried to do what you suggest, but it is the same, and more
this disk is part of a volume groupe, so I can't boot the vm without it.
Is there some unknown command to recover this vm into ovirt?
Thank you in advance.
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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
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--
Nathanaël Blanchet
Supervision réseau
Pôle Infrastrutures Informatiques
227 avenue Professeur-Jean-Louis-Viala
34193 MONTPELLIER CEDEX 5
Tél. 33 (0)4 67 54 84 55
Fax 33 (0)4 67 54 84 14
blanc...@abes.fr
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