# [OmniOS-discuss] OmniOS NFS fileserver hanging under sustained high write loads

Chris Siebenmann cks at cs.toronto.edu
Tue May 5 16:15:54 UTC 2015

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    > >> The hard part will be testing this. I'm not sure I have the HW
    > >> in-house to do it.  I may need illumos community help.
    > >
    > > Since we have a test environment where we can reproduce this and a
    > > high interest in seeing it fixed, we can test new kernel packages
    > > and so on.
    > >
    > > (If given specific howto instructions we can probably build test
    > > kernels from source, but we've never tried to do any OmniOS source
    > > building before so it may take us some time to get up to speed on
    > > that. It'd be much easier to take a prebuilt test kernel, drop it
    > > in, and go.)
    >
    > I can turn around the whole world in an hour or less and provide
    > ONU images if your'e on 012 or 014. What revision are you running
    > currently? I can also help you get a build-illumos-omnios up and
    > running as well. Pick your favorite.

     For now, the simplest thing is installable kernel images (I assume
    that's ONU images) for r151014, which is what our test environment
    is using now and what we'd wind up on with all of our production
    fileservers[*]. I won't be able to start any testing with the images
    until this afternoon at the earliest, so I don't think it's urgent to
    build them right away.

     Thanks for all of this!

    	- cks
    [*: our production fileservers are currently at r151010 but we're
        already looking at an r151014 upgrade. having this fix as part
        of r151014 would make that upgrade definite, and there's other
        things in 14 that we want, eg >16 group support over NFS.
    ]

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