[Openstack-operators] Shared storage HA question

Narayan Desai narayan.desai at gmail.com
Wed Jul 24 14:36:12 UTC 2013

+1 on glusterfs. It works and is stable for us as well.

Also, there is direct qemu integration with libgfapi, which allows you to
bypass the filesystem altogether. We've only tested it directly with
qemu/kvm instances, not through openstack, though it looks like that won't
be hard to add if the support isn't already written. (we saw a substantial
performance improvement from this switch)

On Wed, Jul 24, 2013 at 9:25 AM, Jacob Godin <jacobgodin at gmail.com> wrote:

> Hi Denis,
> I would take a look into GlusterFS with a distributed, replicated volume.
> We have been using it for several months now, and it has been stable. Nova
> will need to have the volume mounted to its instances directory (default
> /var/lib/nova/instances), and Cinder has direct support for Gluster as of
> Grizzly I believe.
> On Wed, Jul 24, 2013 at 11:11 AM, Denis Loshakov <dloshakov at gmail.com>wrote:
>> Hi all,
>> I have issue with creating shared storage for Openstack. Main idea is to
>> create 100% redundant shared storage from two servers (kind of network RAID
>> from two servers).
>> I have two identical servers with many disks inside. What solution can
>> any one provide for such schema? I need shared storage for running VMs (so
>> live migration can work) and also for cinder-volumes.
>> One solution is to install Linux on both servers and use DRBD + OCFS2,
>> any comments on this?
>> Also I heard about Quadstor software and it can create network RAID and
>> present it via iSCSI.
>> Thanks.
>> P.S. Glance uses swift and is setuped on another servers
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