From mboxrd@z Thu Jan  1 00:00:00 1970
From: NeilBrown <neilb-l3A5Bk7waGM@public.gmane.org>
Subject: Re: [PATCH] sunrpc: use better NUMA affinities
Date: Sat, 30 Jul 2011 16:06:10 +1000
Message-ID: <20110730160610.0b751ffd@notabene.brown>
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Cc: "J. Bruce Fields" <bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>,
	Greg Banks <gnb-97jfqw80gc6171pxa8y+qA@public.gmane.org>,
	Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
	"linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
	linux-kernel <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	netdev <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
To: Eric Dumazet <eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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On Sat, 30 Jul 2011 06:08:34 +0200 Eric Dumazet <eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org=
>
wrote:

> Le vendredi 29 juillet 2011 =E0 19:48 -0400, J. Bruce Fields a =E9cri=
t :
> > On Sat, Jul 30, 2011 at 09:30:25AM +1000, NeilBrown wrote:
> > >=20
> > > rpc.nfsd 0
> > >=20
> > > will stop all nfsd threads.  Follow with
> > >=20
> > >   exportfs -f
> > >=20
> > > and you should be done.  I'm not 100% sure about the nfsv4 thread=
 though -
> > > would need to check.
> >=20
> > Should be fine.
> >=20
>=20
> What are the needed steps to be able to unload nfsd module ?
>=20
> So far, I am unable to perform this without using -f option.
>=20
>=20
>=20
>=20

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=20
   lsof /proc/net/rpc/*/*
 gave it away)

NeilBrown
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