# [OmniOS-discuss] Win 8.1 NFS client

Schweiss, Chip chip at innovates.com
Fri Jun 13 11:54:40 UTC 2014

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    You may have revealed the cause of a problem I've seen a few times, but
    have not made the correlation.  In my case we have 100+ CentOS NFS clients
    and a periodic use of 2012R2 server connecting via NFS.

    I have had a few drop offs of the NFS server with out a single line in the
    event logs, just complete non-responsiveness.

    I will definitely be digging deeper into this.

    This is most likely Illumos wide, not just OmniOS.   I will report back to
    both lists if I can get anything reproducible.

    -Chip

    On Fri, Jun 13, 2014 at 5:54 AM, Valrhona <valrhona at gmail.com> wrote:

    > I have a very stable OmniOS machine (Dell T710, zpools are striped
    > mirrors of 2.5 SAS drives and 3-4 TB, DDRdrive ZIL and 72 GB of RAM,
    > so no L2ARC). I installed a new copy of r151010 a couple of months
    > ago, and in general have not had any problems at all. Until today.
    >
    > My older machines run either OpenIndiana, Xubuntu 14.04 LTS, and Win
    > 7. I share all of the zfs filesystems via NFS, and use Napp-It to
    > monitor status (as I tend to prefer the command line). In all cases,
    > the NFS drives were mounted to client computers with the "mount"
    > command (in either windows, Linux or Solaris). For windows, I used its
    > "mount" command, and have consistently had mediocre performance (30
    > MB/sec over gigabit, when both Linux and OpenSolaris can transfer data
    > at 110+ MB/sec.), and long latency, but otherwise it works.
    >
    > Today I got a new laptop, which I installed Win 8.1 Enterprise on. The
    > NFS connection is MUCH faster, both in terms of perceived latency, and
    > transfer rates, which for large sequential transfer can hit 80-90
    > MB/sec (rates that are typical when I NFS mount in Linux or
    > OpenSolaris).
    >
    > The problem is, after I use the NFS mount to my new machine, it
    > somehow causes OmniOS's NFS server to drop out, and say it's "offline"
    > in, for instance, Napp-It, and the zfs filesystems are then
    > inaccessible (though I can still look at the web status, and SSH into
    > the box, so it's not a general problem). As a result, t
    >
    > Has anyone else ever seen this, where an NFS client can cause
    > "nfs-server" on the host to freeze? I can reboot the server, but that
    > is not a great solution, and would like to know what I can do to
    > figure this problem out better. Thank you all in advance!
    >
    > Peter
    > _______________________________________________
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    > OmniOS-discuss at lists.omniti.com
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