# [OmniOS-discuss] NFSv4 client soft lockups

matthew lagoe matthew.lagoe at subrigo.net
Fri Sep 12 17:50:56 UTC 2014

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    I do not know if it is relevant but I came from open Indiana and it had a
    similar issue where nfsv4 had a bug that wouldn't unlock files

    Valrhona <valrhona at gmail.com> wrote:

    Not sure if this is the same issue, but I had the same behavior with
    Windows 8.1 on my laptop; everything has been fine for many months
    with clients running Win 7, Ubuntu 12.04 LTS, Ubuntu 14.04 LTS,
    OpenIndiana and XStreamOS (Illumos-based). But the Win 8.1 laptop
    causes NFSv4 to lock up, and (obviously) blocks the rest of the
    clients from accessing the server when it does, until NFS is reset.

    Interestingly, it doesn't seem to do this immediately; NFSv4 works
    just fine for maybe 15 minutes before the lockup occurs, but I haven't
    exactly troubleshot the details. Is there a particular log file which
    might be helpful to examine? Thanks!

    Peter

    On Fri, Sep 12, 2014 at 11:25 AM, Derek Yarnell <derek at umiacs.umd.edu>
    wrote:
    >
    >
    > On 9/12/14 11:05 AM, Schweiss, Chip wrote:
    >> Is you RHEL 6.5 client a virtual machine?   If so this message is a red
    >> herring to your problem.
    >>
    >> See the VMware KB article:
    >>
    http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=dis
    playKC&externalId=1009996
    >>
    >> I run all NFSv4 from CentOS 6.5 to OmniOS, but do not use kerberos.
    It's
    >> been rock solid.
    >
    > Hi Chip,
    >
    > No we are running on physical hardware.  It also looks like the
    > parameter they talk about is something different[1] post RHEL 6.1.  We
    > are trying to drop to just sec=krb5 to see if that provides any relief
    > and may increase the watchdog timer a bit to see if this is just a race
    > condition.
    >
    > [1] - https://access.redhat.com/solutions/57811?
    >
    > Thanks,
    > derek
    >
    > --
    > Derek T. Yarnell
    > University of Maryland
    > Institute for Advanced Computer Studies
    > _______________________________________________
    > OmniOS-discuss mailing list
    > OmniOS-discuss at lists.omniti.com
    > http://lists.omniti.com/mailman/listinfo/omnios-discuss
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