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Date:      Fri, 29 Sep 2006 10:10:02 +0200
From:      Yuri Khotyaintsev <yuri@irfu.se>
To:        freebsd-stable@freebsd.org
Cc:        Kris Kennaway <kris@obsecurity.org>
Subject:   NFS/TCP
Message-ID:  <451CD4DA.8060906@irfu.se>
In-Reply-To: <200605111111.07882.yuri@irfu.se>
References:  <200605081354.58807.yuri@irfu.se> <20060508174133.GA48163@xor.obsecurity.org> <200605111111.07882.yuri@irfu.se>

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Will a fix for NFS/TCP (nfs_socket.c rev 1.138) be ever committed to stab=
le?

Yuri Khotyaintsev wrote:
> On Monday 08 May 2006 19:41, Kris Kennaway wrote:
>  =20
>> On Mon, May 08, 2006 at 01:54:58PM +0200, Yuri Khotyaintsev wrote:
>>    =20
>>> I have an NSF server and several clients which write large text files=
 to
>>> the server. All machines are running max one week old STABLE and are
>>> connected to the same gigabit switch, and have identical nics (em). A=
md
>>> mount options are: /defaults
>>> type:=3Dnfs;cache:=3Dall;opts:=3Drw,intr,nosuid,grpid,nfsv3,tcp,resvp=
ort,soft
>>>
>>> Almost all the time I get the following messages on the server:
>>>
>>> nfsd send error 32
>>> nfsd send error 32
>>> nfsd send error 32
>>> nfsd send error 32
>>> nfsd send error 32
>>> ...
>>>
>>> And corresponding messages on a client:
>>>
>>> impossible packet length (8996061) from nfs server db:/export/data1/c=
aa
>>> impossible packet length (3123011) from nfs server db:/export/data1/c=
aa
>>> impossible packet length (893006905) from nfs server db:/export/data1=
/caa
>>> impossible packet length (842018868) from nfs server db:/export/data1=
/caa
>>> impossible packet length (874220) from nfs server db:/export/data1/ca=
a
>>> impossible packet length (14182767) from nfs server db:/export/data1/=
caa
>>> impossible packet length (16777216) from nfs server db:/export/data1/=
caa
>>> impossible packet length (758134573) from nfs server db:/export/data1=
/caa
>>> impossible packet length (1503661568) from nfs server
>>> db:/export/data1/caa impossible packet length (1300840) from nfs serv=
er
>>> db:/export/data1/caa ...
>>>
>>> And from time to time the files which are written to the server get
>>> truncated (regardless of the file size)...
>>>
>>> Does anybody have an idea how to make it work reliably and not to
>>> truncate the files?
>>>      =20
>> mohan committed a fix for one such problem a few days ago.  It will
>> not be in 6.1-RELEASE, but you should be able to apply the patch
>> yourself.  It would be nice to know how it works for you.
>>
>> =20
>> http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/nfsclient/nfs_socket.c.d=
iff?r
>> 1=3Dtext&tr1=3D1.136&r2=3Dtext&tr2=3D1.139
>>    =20
>
> I have patched nfs_socket.c on all clients and run the same kind of pro=
cessing=20
> which was causing the problem. I can report that the problem is gone wi=
th=20
> nfs_socket.c rev 1.139. I only got one "nfs send error 35" on one of th=
e=20
> clients instead of hundreds of messages I was seeing before. Thank you =
very=20
> much!
>  =20
--=20
Dr. Yuri Khotyaintsev
Institutet f=C3=B6r rymdfysik (IRF), Uppsala




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