[pve-devel] LXC volumes on ZFS over iSCSI

[Michael Rasmussen]

On Wed, 12 Oct 2016 05:41:26 +0200 (CEST)
Alexandre DERUMIER <aderumier at odiso.com> wrote:

> 
> Well, this is very dependent of nfs server implementation quality.
> I'm running vm on netapp san though nfs 4.1, and I have very good performance.
> 
netapp is a purpose build NFS based storage appliance with their own
customized NFS server so netapp is an exception to the rule.
> I think the biggest problem is lack of fstrim/discard. (should be availble in the future nfs 4.2)
> 
That and that you have to use hard locking to garanti against data
loss. The hard locking is the part which can bring any server down if
the nfs server connection hangs in any way.

Add to that that it is very difficult to make a high available NFS
server since client locks are stored in kernel mode.

-- 
Hilsen/Regards
Michael Rasmussen

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