Re: [Users] Opinions needed: 3 node gluster replica 3 | NFS async | snapshots for consistency
----- Original Message -----
I'm looking for some opinions on this configuration in an effort
to increase
write performance:
3 storage nodes using glusterfs in replica 3, quorum.
gluster doesn't support replica 3 yet, so I'm not sure how heavily I'd rely on
this.
Ovirt storage domain via NFS
why NFS and not gluster?
Volume set nfs.trusted-sync on
On Ovirt, taking snapshots often enough to recover from a storage crash
Note that this would have negative write performance impact
Using CTDB to manage NFS storage domain IP, moving it to another
storage node
when necessary
Something along the lines of EC2's data consistency model, where only
snapshots can be considered reliable. The Ovirt added advantage would be
memory consistency at time of snapshot as well.
Feedback appreciated, including 'you are insane for thinking this is a good
idea' (and some supported reasoning would be great).
Thanks,
Steve Dainard
IT Infrastructure Manager
Miovision | Rethink Traffic
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