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

Zhi Yan Liu lzy.dev at gmail.com
Thu Nov 28 09:26:27 UTC 2013


Alvise,

On Thu, Nov 28, 2013 at 4:44 PM, Alvise Dorigo <alvise.dorigo at pd.infn.it> wrote:
> 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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>

I personally like +1 cent to Ceph.
Currently Glance can drive RBD backend store well and Nova has some
code for RBD image supporting.

zhiyan



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