8:41 a.m.
Thank you for the confirmation Strahil!
As our current environment is more or less the same (except the Hardware
RAID, which is not possible with NVMe disks), we planned to use Gluster.
I guess we will proceed as we originally planned as we are satisfied
with the performance.
On 3/11/22 07:08, Strahil Nikolov via Users wrote:
Red Hat Gluster Storage is discontinued, but the Gluster (upstream)
is
pretty active and as Sandro Bonazzola (RH) confirmed -> there are no
plans to remove support for Gluster.
I think it's still a good choice, especially if you don't have SAN/
Higly-Available NFS.
Also, storage migration is transparent for the VMs, so you can add SAN
on a later stage and move all VMs from Gluster to SAN without
disruption* .
Keep in mind that Gluster is a tier2 storage and if you really need a
lot of IOPS, CEPH might be suitable.
Best Regards,
Strahil Nikolov
*: Note that this is valid if the FUSE client is used. Other oVirt
users report huge performance increase when using libgfapi interface,
but it has drawbacks like storage migration can happen only when you
switch off libgfapi, power off the VM (on a scheduled basis), power on
the VM, live migrate the VM to other storage type, enable libgfapi
again for the rest of the VMs.
Thanks to Nikolov and Strahil for the valuable input! I was off
for a few weeks, so I would like to apologize if I'm potentially
reviving a zombie thread.
I am a bit confused about where to go with this environment after
the discontinuation of the hyperconverged setup. What alternative
options are there for us? Or do you think going the Gluster way
would still be advisable, even though it seems as it is being
discontinued over time?
Thanks for any input on this!
Best regards,
Jonas
On 1/22/22 14:31, Strahil Nikolov via Users wrote:
> Using the wizzard is utilizing the Gluster Andible roles.
> I would highly recommend using it, unless you know what you are
> doing (for example storage alignment when using Hardware raid).
>
> Keep in mind that the DHT xlator (the logic in distributed
> volumes) is shard aware, so your shards are spread between
> subvolumes and additional performance can be gained.So using
> replicated-distributed volumes have their benefits.
>
> If you decide to avoid the software raid, use only replica3
> volumes as with SSDs/NVMEs usually the failures are not physical,
> but logical (maximum writes reached -> predictive failure ->
> total failure).
>
> Also, consider mounting via noatime/relatime and
> context="system_u:object_r:glusterd_brick_t:s0" for your gluster
> bricks.
>
> Best Regards,
> Strahil Nikolov
>
> On Fri, Jan 21, 2022 at 11:00, Gilboa Davara
> <gilboad(a)gmail.com> <mailto:gilboad@gmail.com> wrote:
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