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    SubjectRe: [PATCH] sunrpc: use better NUMA affinities
    On Sat, 30 Jul 2011 06:08:34 +0200 Eric Dumazet <eric.dumazet@gmail.com>
    wrote:

    > Le vendredi 29 juillet 2011 à 19:48 -0400, J. Bruce Fields a écrit :
    > > On Sat, Jul 30, 2011 at 09:30:25AM +1000, NeilBrown wrote:
    > > >
    > > > rpc.nfsd 0
    > > >
    > > > will stop all nfsd threads. Follow with
    > > >
    > > > exportfs -f
    > > >
    > > > and you should be done. I'm not 100% sure about the nfsv4 thread though -
    > > > would need to check.
    > >
    > > Should be fine.
    > >
    >
    > What are the needed steps to be able to unload nfsd module ?
    >
    > So far, I am unable to perform this without using -f option.
    >
    >
    >
    >

    Kill all nfsd threads.
    This can be done with 'kill' or 'rpc.nfsd 0' or
    echo 0 > /proc/fs/nfsd/threads

    kill mountd
    killall rpc.mountd

    kill idmapd

    unexport everything.
    This can be done with 'exportfs -f' and checked by
    grep . /proc/net/rpc/*/content
    this should only contain comments

    unmount the 'nfsd' filesystem
    umount /proc/fs/nfsd

    rmmod nfsd


    (it look me ages to remember idmapd - but
    lsof /proc/net/rpc/*/*
    gave it away)

    NeilBrown
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