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On 03/06/2013 02:46 PM, Mark Lehrer wrote:
> 
>> are make in the compute node. So all this takes long an dis proportional to
>> the image size. Is there any way to speed up this process? Is a SAN based
>> backend the only way to go?
> 
> No, but if you have multiple compute nodes you will want to have them
> all share /var/lib/nova/instances on a fast NFS server.  Make sure
> that your glance machine is as fast as possible too.  I also mount
> /tmp from /dev/shm which makes the snapshot process more tolerable,
> but obviously this will require machines with lots of RAM to spare.
> 
> The change I made that helped the most was to disable NBD.  You have
> to do this in /etc/init/nova-compute.conf and just comment out the
> modprobe nbd line.

Was that to disable injection at startup?
That can be done through config in grizzly
by setting libvirt_injection_partition=-2

thanks,
Pádraig.