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List: freebsd-fs
Subject: Re: NFS lockup when copying a "special" file
From: Oliver Lehmann <lehmann () ans-netz ! de>
Date: 2006-09-05 15:41:56
Message-ID: 20060905174156.ed8550e3.lehmann () ans-netz ! de
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Oliver Fromme wrote:
> Did you try any of the suggestions in my previous mail?
> E.g.: use TCP NFS transport instead of UDP, and/or force
> NFSv2 instead of NFSv3. You could also try lowering the
> MTU (although I think it's not the cause of the problem
> in your case, but it might be worth a try nonetheless).
I now switched to TCP NFS.
> What are your NFS mount options? What is the size of the
> file on which the mount became stuck? Do the contents of
> the file matter? i.e. when you create a file of the same
> size with dd(1) that contains only zeroes, can you copy
> it to the NFS share?
Mount options are:
tcp,soft,nfsv3,bg,rw
This time it was during playing music from nfs and scping a large
file from nfs to another system - so I can't tell this time what
exactly caused it.
At least the 1st appearence of the problems two month ago happend when
copying a file which was reproduceable. The file is still online in
that tar file:
http://pofo.de/tmp/file.tar - yang.xchatlog
>
> A bit of tcpdump output might be helpful, too. Please use
> the options "-vv -s1600", otherwise it's useless.
My initial mail only contained a standard tcpdump
19:18:39.582342 IP kartoffel.salatschuessel.net.2033686372 > \
dill.salatschuessel.net.nfs: 1472 write [|nfs] 19:18:39.582344 IP \
kartoffel.salatschuessel.net > dill.salatschuessel.net: udp 19:18:39.582346 IP \
kartoffel.salatschuessel.net > dill.salatschuessel.net: udp 19:18:39.582348 IP \
kartoffel.salatschuessel.net > dill.salatschuessel.net: udp
--
Oliver Lehmann
http://www.pofo.de/
http://wishlist.ans-netz.de/
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