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Date:      25 Mar 2003 20:54:40 -0500
From:      Jeff Utter <sirfunk@sadclown.net>
To:        freebsd-current@FreeBSD.ORG
Subject:   [Re: NFS -current
Message-ID:  <1048643679.74985.8.camel@localhost>
In-Reply-To: <200303260034.aa92057@salmon.maths.tcd.ie>
References:  <200303260034.aa92057@salmon.maths.tcd.ie>

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	I'm not sure if it's related, but i've noticed under HEAVY nfs load my
nfs server hangs for a while, then it REBOOTS! i'm pretty sure it's a
nfs related problem, because doing heavy disk i/o on the server itself
doen't have any related problems at all.. only when it's heavy access
over nfs.

I'm going to try makeworld again today, maybe it was a bug that has been
fixed. we'll see

> >On several clients (-DP1, -DP2, 4-stable) mounting a nfs-share
> >(mount_nfs -i -U -3 server:/nfs /mnt) and then copying data from that
> >share to the local disk (find -x -d /mnt | cpio -pdumv /local) results
> >in lost NFS-mount.
> >
> >client kernel: nfs server server:/nfs: not responding 10 > 9
> 
> I'm not sure what you mean by a "lost" mount. Do all further accesses
> to the filesystem hang?
> 
> It is normal enough to get the above 'not responding' errors
> occasionally on a busy fileserver, but only if they are almost
> immediately followed by 'is alive again' messages.
> 
> If the filesystem stops working and doesn't recover, could you run
> `tcpdump -nepX -s 1600 udp port 2049' when it hangs and record a
> few packets?
> 
> Ian



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