[nycbug-talk] Nas4Free

Charles Sprickman spork at bway.net
Mon Mar 18 22:17:56 EDT 2013

On Mar 18, 2013, at 8:27 PM, Nick Danger wrote:

> Is anyone running nas4free and mounting via NFS? I just set up a box and I am having horrible write performance over NFS. Write only, reads are fine. And same partition mounted via CIFS works great reads and writes (to the same linux host even, just mount cifs instead of nfs).   I haven't been able to gleen any advice via google, and most of the NFS tuning advice is more like "how to eek the last few bits of speed" where as when I say horrible, I mean instead of 45 MB/s, I am getting 0.6 MB/s write performance.
> Any advice?

Not a solution, but something to test.

If you turn off sync writes on whatever fs you're exporting, does the write speed on nfs start to match smb?

ie:  zfs set sync=disabled yourpool/yourfs

Don't do that with important data, just use it for testing.


> Server: Nas4Free v9.1.0.1, 4 disks in a ZFS pool (raid1Z).  Client: Fedora 18, mounts 2 other NFS servers (working fine) and can mount the NAS4Free as CIFS or NFS. CIFS works, NFS is SLOOOOOOOOOOW. :-)
> More details on request.
> Nick
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