[Gluster-users] GlusterFS as virtual machine storage

Pavel Szalbot
Wed, 23 Aug 2017 16:14:17 -0000

Hi, after many VM crashes during upgrades of Gluster, losing network
connectivity on one node etc. I would advise running replica 2 with
arbiter.

I once even managed to break this setup (with arbiter) due to network
partitioning - one data node never healed and I had to restore from
backups (it was easier and kind of non-production). Be extremely
careful and plan for failure.

-ps


On Mon, Aug 21, 2017 at 10:09 PM, Gionatan Danti <g.danti at assyoma.it>
wrote:
> Hi all,
> I would like to ask if, and with how much success, you are using GlusterFS
> for virtual machine storage.
>
> My plan: I want to setup a 2-node cluster, where VM runs on the nodes
> themselves and can be live-migrated on demand.
>
> I have some questions:
> - do you use GlusterFS for similar setup?
> - if so, how do you feel about it?
> - if a node crashes/reboots, how the system re-syncs? Will the VM files be
> fully resynchronized, or the live node keeps some sort of write bitmap to
> resynchronize changed/written chunks only? (note: I know about sharding,
but
> I would like to avoid it);
> - finally, how much stable is the system?
>
> Thanks.
>
> --
> Danti Gionatan
> Supporto Tecnico
> Assyoma S.r.l. - www.assyoma.it
> email: g.danti at assyoma.it - info at assyoma.it
> GPG public key ID: FF5F32A8
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