| 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 & CoTel : +33 9 72 37 94 15 
You should check your syslog for app armor denied messages. It is possible app armor is getting in the way here.
Vish 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
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
Tel :
+33 9 72 37 94 15
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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