[Openstack] using Glusterfs for instance storage

Razique Mahroua razique.mahroua at gmail.com
Thu Apr 11 14:49:18 UTC 2013


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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