<div dir="ltr">This is just a shot in the dark, but have you tried to use the disk copy feature? You can copy the disks back to where they were and try starting the VM</div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Dec 7, 2017 at 7:48 AM, Nathanaël Blanchet <span dir="ltr"><<a href="mailto:blanchet@abes.fr" target="_blank">blanchet@abes.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div class="m_-3443482866820998840moz-cite-prefix">Le 06/12/2017 à 15:56, Maor Lipchuk a
écrit :<br>
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<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Dec 6, 2017 at 12:30 PM,
Nicolas Ecarnot <span dir="ltr"><<a href="mailto:nicolas@ecarnot.net" target="_blank">nicolas@ecarnot.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="m_-3443482866820998840gmail-">Le
06/12/2017 à 11:21, Nathanaël Blanchet a écrit :<br>
</span>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="m_-3443482866820998840gmail-">
Hi all,<br>
<br>
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.<br>
<br>
After successful move, the vm refuses to start with
this message:<br>
<br>
Bad volume specification {u'index': 0, u'domainID':
u'961ea94a-aced-4dd0-a9f0-266c<wbr>e1810177',
'reqsize': '0', u'format': u'cow', u'bootOrder': u'1',
u'discard': False, u'volumeID':
u'a0b6d5cb-db1e-4c25-aaaf-1bbe<wbr>e142c60b',
'apparentsize': '<a href="tel:%28214%29%20748-3648" value="+12147483648" target="_blank">2147483648</a>', u'imageID':
u'4a95614e-bf1d-407c-aa72-2df4<wbr>14abcb7a',
u'specParams': {}, u'readonly': u'false', u'iface':
u'virtio', u'optional': u'false', u'deviceId':
u'4a95614e-bf1d-407c-aa72-2df4<wbr>14abcb7a',
'truesize': '<a href="tel:%28214%29%20748-3648" value="+12147483648" target="_blank">2147483648</a>', u'poolID':
u'48ca3019-9dbf-4ef3-98e9-0810<wbr>5d396350',
u'device': u'disk', u'shared': u'false',
u'propagateErrors': u'off', u'type': u'disk'}.<br>
<br>
I tried to merge the snaphots, export , clone from
snapshot, copy disks, or deactivate disks and every
action fails when it is about disk.<br>
<br>
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.<br>
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<div>The disks which you want to copy should contain the
entire volume chain.</div>
<div>Based on the log you mentioned, It looks like this
image is problematic:</div>
<div><br>
</div>
<div> storage id: '961ea94a-aced-4dd0-a9f0-266ce<wbr>1810177',</div>
<div> imageID': u'4a95614e-bf1d-407c-aa72-2df4<wbr>14abcb7a<br>
</div>
<div> volumeID': u'a0b6d5cb-db1e-4c25-aaaf-1bbe<wbr>e142c60b'</div>
<div><br>
</div>
<div>What if you try to deactivate this image and try to run
the VM, will it run?</div>
</div>
</div>
</div>
</blockquote></span>
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.<span class=""><br>
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<br>
Is there some unknown command to recover this vm into
ovirt?<br>
<br>
Thank you in advance.<br>
<br>
<br>
</span></blockquote>
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<div> </div>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="m_-3443482866820998840gmail-">
<br>
</span>
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<br>
</blockquote>
<br>
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?<br>
As you know how to dd from LVs, you could extract every
needed snapshots files and rebuild your VM outside of
oVirt.<br>
Then take time to re-import it later and safely.<span class="m_-3443482866820998840gmail-HOEnZb"><font color="#888888"><br>
<br>
-- <br>
Nicolas ECARNOT<br>
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</blockquote>
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</span><span class=""><pre class="m_-3443482866820998840moz-signature" cols="72">--
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
<a class="m_-3443482866820998840moz-txt-link-abbreviated" href="mailto:blanchet@abes.fr" target="_blank">blanchet@abes.fr</a> </pre>
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