[DRBD-user] DRBD Dual Primary + GFS2 for redundant KVM hosts

Yannis Milios yannis.milios at gmail.com
Sat Aug 26 14:28:09 CEST 2017

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Ah I see, sorry I wasn't aware of that. Is there a particular reason in
using file based VMs ? since generally speaking the performance on raw
devices is much better and in DRBD9 you can leverage of thin lvm or zfs
based snapshots.


On 26 Aug 2017 15:14, "Gionatan Danti" <g.danti at assyoma.it> wrote:

Il 26-08-2017 13:56 Yannis Milios ha scritto:

> Have you considered a HA NFS over a 2-node DRBD8 cluster ? Should work
> well on most hypervisors (qcow2,raw,vmdk based).
> Yannis

Hi Yannis, yes, I considered that.
However, as this would be a converged setup (ie: virtual machines run on
the same node exporting the storage), this would require a loopback NFS
mount. From what I know, this is (was?) discouraged due to possible
livelock on the NFS kernel process.


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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