Thank you for reporting back. I don't have to use async with my NFS share. Its not the same comparison, but just for metrics I am running an HP dl380 with 2x6cores and 24GB of ram, with 16 disks in raidz2 with 4 vdevs. Backend is ZFS. Connections are 10GBE I get great performance from my setup. On Sat, Aug 1, 2015 at 9:00 PM, Matthew Lagoe <matthew.lagoe@subrigo.net> wrote:
You can run without async so long as your nfs server can handle sync writes quickly
-----Original Message----- From: users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] On Behalf Of Alan Murrell Sent: Saturday, August 01, 2015 05:37 PM To: users Subject: Re: [ovirt-users] Poor guest write speeds
Hi Donny (and everyone else who uses NFS-backed storage)
You mentioned that you get really good performance in oVirt and I am curious what you use for your NFS options in exportfs? The 'async' option fixed my performance issues, but of course this would not be a recommended option in a production environment, at least unless the NFS server was running with a BBU on the RAID card.
Just curious. Thanks! :-)
-Alan
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