On Jul 28, 2010, at 12:11 PM, sol wrote: > Richard Elling wrote: >> Gregory Gee wrote: >>> I am using OpenSolaris to host VM images over NFS for XenServer. I'm >>> looking >> for tips on what parameters can be set to help optimize my ZFS pool that >> holds >> my VM images. >> There is nothing special about tuning for VMs, the normal NFS tuning applies. > > > That's not been my experience. Out of the box VMware server would not work > with > the VMs stored on a zfs pool via NFS.
I do this regularly and know many people who run this way. > I've not yet found out why but the > analytics showed millions of getattr/access/lookup compared to read/write. These are requests from the client being serviced by the server. To find out why the client is sending such requests, you'll need to look at the client. > A partial workaround was to turn off access time on the share and to mount > with > noatime,actimeo=60 Yes, these are common NFS tunables. -- richard > But that's not perfect because when left along the VM got into a "stuck" > state. > I've never seen that state before when the VM was hosted on a local disk. > Hosting VMs on NFS is not working well so far... -- Richard Elling rich...@nexenta.com +1-760-896-4422 Enterprise class storage for everyone www.nexenta.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
