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Also, 
you can import manually one instance and see if it boots.
$ cd  /exports/instances/instances/instance-00000242
$ virsh define libvirt.xml
$ virsh start instance-00000242

and see if it boots, if so, we should start looking somewhere else

Razique Mahroua - Nuage & Co
razique.mahroua at gmail.com
Tel : +33 9 72 37 94 15



Le 11 avr. 2013 à 20:14, Vishvananda Ishaya <vishvananda at gmail.com> a écrit :

> You should check your syslog for app armor denied messages. It is possible
> app armor is getting in the way here.
> 
> Vish
> 
> On Apr 11, 2013, at 8:35 AM, John Paul Walters <jwalters at isi.edu> wrote:
> 
>> Hi Sylvain,
>> 
>> I agree, though I've confirmed that the UID and GID are consistent across both the compute nodes and my Glusterfs nodes. 
>> 
>> JP
>> 
>> 
>> On Apr 11, 2013, at 11:22 AM, Sylvain Bauza <sylvain.bauza at digimind.com> wrote:
>> 
>>> Agree.
>>> As for other shared FS, this is *highly* important to make sure Nova UID and GID are consistent in between all compute nodes. 
>>> If this is not the case, then you have to usermod all instances...
>>> 
>>> -Sylvain
>>> 
>>> Le 11/04/2013 16:49, Razique Mahroua a écrit :
>>>> Hi JP,
>>>> my bet is that this is a writing permissions issue. Does nova has the right to write within the mounted directory?
>>>> 
>>>> Razique Mahroua - Nuage & Co
>>>> razique.mahroua at gmail.com
>>>> Tel : +33 9 72 37 94 15
>>>> 
>>>> 
>>>> 
>>>> Le 11 avr. 2013 à 16:36, John Paul Walters <jwalters at isi.edu> a écrit :
>>>> 
>>>>> Hi,
>>>>> 
>>>>> We've started implementing a Glusterfs-based solution for instance storage in order to provide live migration.  I've run into a strange problem when using a multi-node Gluster setup that I hope someone has a suggestion to resolve.
>>>>> 
>>>>> I have a 12 node distributed/replicated Gluster cluster.  I can mount it to my client machines, and it seems to be working alright.  When I launch instances, the nova-compute log on the client machines are giving me two error messages:
>>>>> 
>>>>> First is a qemu-kvm error: could not open disk image /exports/instances/instances/instance-00000242/disk: Invalid argument
>>>>> (full output at http://pastebin.com/i8vzWegJ)
>>>>> 
>>>>> The second error message comes a short time later ending with nova.openstack.common.rpc.amqp Invalid: Instance has already been created
>>>>> (full output at http://pastebin.com/6Ta4kkBN)
>>>>> 
>>>>> This happens reliably with the multi-Gluster-node setup.  Oddly, after creating a test Gluster volume composed of a single brick and single node, everything works fine.
>>>>> 
>>>>> Does anyone have any suggestions?
>>>>> 
>>>>> thanks,
>>>>> JP
>>>>> 
>>>>> 
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>>>> 
>>>> 
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>> 
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