[Openstack-operators] Advice about distributed FS for glance/nova

Alvise Dorigo alvise.dorigo at pd.infn.it
Thu Nov 28 08:44:57 UTC 2013


Hello,
I'm setting up an openstack-based cloud IaaS. Everything is going to be in HA mode.
In particular I'm wondering which would be the best choice for the backend FS to support the storage for glance and nova (i.e. /var/lib/glance/images and /var/lib/nova/instances).

I've read around; there's a number of FS and a lot discussions. The most cited and used seem to be (not only for cloud IaaS):
GlusterFS
LustreFS
CEPH
GPFS
MooseFS
FhGFS
CODA
NFS
AFS

My requirements are:
 - extendability (new disk array transparently added without any outage)
 - high performance on big files (glance and nova usually manage big files)
 - POSIX / mount as a normal filesystem with unique naming space
 - easy to install/manage (and supported on RHEL 6.x)

Any advice or report on your experience would be very appreciated.

Regards,

	Alvise
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