Yes, we manage a number of Distributed Storage systems including
MooseFS, Ceph, DRBD and of course Gluster (since 3.3). Each has a
specific use.
For small customer-specific VM host clusters, which is the majority of
what we do, Gluster is by far the safest and easiest to
deploy/understand for the more junior members of the team. We have never
lost a VM image on Gluster, which can't be said about the others
(including CEPH but that disaster was years ago and somewhat
self-inflicted). The point is that it hard to shoot yourself in the foot
with Gluster.
The newer innovations on Gluster such as sharding and the arbiter node
have allowed it be competitive on the performance/hassle factor.
Our Ceph cluster is on one of the few larger host installations we have
and is mostly handled by a more senior tech who has lots of experience
with it. He clearly loves it and doesn't understand why we aren't fans
but it just seems to be overkill for the typical 3 host VM cluster. The
rest of us worry about him getting hit by a bus.
For the record I really like MooseFS, but not for live VMs, we use it
for archiving and it is the easiest to maintain as long as you are
paranoid with the "master" server which provides the metadata index for
the chunkserver nodes.
My hope for Gluster is that it is able to continue to improve with some
of the new ideas such as the thin-arbiter and keep that
performance/hassle ratio high.
My worry is that IBM/Redhat makes more money on Ceph consulting, than
Gluster and thus contributes to the idea that Gluster is a deprecated
technology.
On 10/1/2020 7:53 AM, Strahil Nikolov via Users wrote:
CEPH requires at least 4 nodes to be "good".
I know that Gluster is not the "favourite child" for most vendors, yet it is
still optimal for HCI.
You can check
https://www.ovirt.org/develop/release-management/features/storage/cinder-integration.html
for cinder integration.
Best Regards,
Strahil Nikolov
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