[libvirt-users] snapshot anomaly

[Sakhi Hadebe]

I had the same problem yesterday. I found the solution from this article
https://kashyapc.fedorapeople.org/virt/lc-2012/snapshots-handout.html.
According to the article it deletes the tracking metadata by libvirt.

You can physically remove the snapshot now that there is no tracking stream
data by libvirt

On Wed, Aug 23, 2017 at 4:56 PM, Doug Hughes <doug.hughes at keystonenap.com>
wrote:

> THat did it! Can you esplain what was going on and how that fixed it?
> Thanks
>
> On 8/23/2017 10:50 AM, Sakhi Hadebe wrote:
>
> Hi,
>
> Can you try this command:
> virsh snapshot-delete serv1r2 snap --metadata
>
>
>
>
> On Wed, Aug 23, 2017 at 4:41 PM, Doug Hughes <doug.hughes at keystonenap.com>
> wrote:
>
>> I'm not sure how this snapshot got created, but, I cannot delete it, and
>> its presence prevents me from creating other snapshots. I don't know if it
>> was created by a command gone amok or something else.
>>
>> # virsh snapshot-list serv1r2
>>  Name                 Creation Time             State
>> ------------------------------------------------------------
>>  snap                 2017-01-30 17:01:11 -0500 shutoff
>>
>> # virsh snapshot-delete serv1r2 snap --disk-only
>> error: command 'snapshot-delete' doesn't support option --disk-only
>>
>> # virsh snapshot-dumpxml serv1r2 snap
>> <domainsnapshot>
>>   <name>snap</name>
>>   <state>shutoff</state>
>>   <creationTime>1485813671</creationTime>
>>   <memory snapshot='no'/>
>>   <disks>
>>     <disk name='vda' snapshot='external' type='file'>
>>       <driver type='qcow2'/>
>>       <source file='/*var/lib/libvirt/images/serv1r2-savesnap.qcow2'/*>
>>     </disk>
>>     <disk name='fda' snapshot='no'/>
>>     <disk name='hda' snapshot='no'/>
>>   </disks>
>>
>> #  ls -l /var/lib/libvirt/images/serv1r2-savesnap.qcow2
>> ls: cannot access /var/lib/libvirt/images/serv1r2-savesnap.qcow2: No
>> such file or directory
>>
>> # virsh snapshot-create-as --domain serv1r2 snap --diskspec
>> vda,file=/var/lib/libvirt/flashimages/serv1r2-snap.qcow2  --disk-only
>> --atomic --no-metadata --quiesce
>> error: internal error: unexpected domain snapshot snap already exists
>>
>> # virsh snapshot-revert serv1r2 snap
>> error: unsupported configuration: revert to external snapshot not
>> supported yet
>>
>> Any idea for breaking out of this box?
>>
>>
>>
>> --
>> Doug Hughes
>> Keystone NAP
>> Fairless Hills, PA
>> 1.844.KEYBLOCK (539.2562)
>>
>> _______________________________________________
>> libvirt-users mailing list
>> libvirt-users at redhat.com
>> https://www.redhat.com/mailman/listinfo/libvirt-users
>>
>
>
>
> --
> Regards,
> Sakhi Hadebe
>
> Engineer: South African National Research Network (SANReN)Competency Area, Meraka, CSIR
>
> Tel:   +27 12 841 2308 <+27128414213>
> Fax:   +27 12 841 4223 <+27128414223>
> Cell:  +27 71 331 9622 <+27823034657>
> Email: sakhi at sanren.ac.za <shadebe at csir.co.za>
>
>
> --
> Doug Hughes
> Keystone NAP
> Fairless Hills, PA
> 1.844.KEYBLOCK (539.2562)
>



-- 
Regards,
Sakhi Hadebe

Engineer: South African National Research Network (SANReN)Competency
Area, Meraka, CSIR

Tel:   +27 12 841 2308 <+27128414213>
Fax:   +27 12 841 4223 <+27128414223>
Cell:  +27 71 331 9622 <+27823034657>
Email: sakhi at sanren.ac.za <shadebe at csir.co.za>
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