[Users] Experience with low cost NFS-Storage as VM-Storage?

[Sven Kieske]

Hi,

I'd like to ask around if someone does run oVirt
with NFS backed Storage provided by simple servers (no SAN or NAS)
and what your experience is so far?

In particular I'm interested what happens if there is a connection
loss to the NFS-Volume.

How does this affect running vms and the compute nodes they run on?

I suspect they would first write their changes to RAM instead of virtual
HDD.
But once the RAM is full, does just the vm become unresponsive or
does the whole compute node die?

I couldn't test this yet myself, but my limited experience with
NFS-Servers tells me, that they become unresponsive if they are under
heavy load and I'd like to know how this affects the vms and
computenode.

Thanks!

PS: Bonus question: Does someone utilize the NFS-Servers also as
computenodes ?

-- 
Mit freundlichen Grüßen / Regards

Sven Kieske

Systemadministrator
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