NFS/TCP problems

[Kris Kennaway]

On Mon, May 08, 2006 at 01:54:58PM +0200, Yuri Khotyaintsev wrote:
> 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). Amd mount options are:
> /defaults  
> type:=nfs;cache:=all;opts:=rw,intr,nosuid,grpid,nfsv3,tcp,resvport,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/caa
> impossible packet length (3123011) from nfs server db:/export/data1/caa
> 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/caa
> 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 server 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?

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.

  http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/nfsclient/nfs_socket.c.diff?r1=text&tr1=1.136&r2=text&tr2=1.139

Kris
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20060508/611143d7/attachment.pgp