The following reply was made to PR misc/34557; it has been noted by GNATS.

From: christos@zoulas.com (Christos Zoulas)
To: gnats-bugs@NetBSD.org, misc-bug-people@netbsd.org,
	gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Cc: 
Subject: Re: misc/34557: Problem with NetBSD-3 as a NFSv3 server with ext2fs
Date: Tue, 19 Sep 2006 09:26:36 -0400

 On Sep 19, 12:45pm, deather.dede@gmail.com (deather.dede@gmail.com) wrote:
 -- Subject: misc/34557: Problem with NetBSD-3 as a NFSv3 server with ext2fs
 
 | >Number:         34557
 | >Category:       misc
 | >Synopsis:       Problem with NetBSD-3 as a NFSv3 server with ext2fs
 | >Confidential:   no
 | >Severity:       serious
 | >Priority:       medium
 | >Responsible:    misc-bug-people
 | >State:          open
 | >Class:          sw-bug
 | >Submitter-Id:   net
 | >Arrival-Date:   Tue Sep 19 12:45:00 +0000 2006
 | >Originator:     Thomas Lecomte
 | >Release:        3.0
 | >Organization:
 | N/A
 | >Environment:
 | NetBSD barney.hinyx.info 3.0 NetBSD 3.0 (GENERIC) #0: Mon Dec 19 01:04:02 UTC 2005  builds@works.netbsd.org:/home/builds/ab/netbsd-3-0-RELEASE/i386/200512182024Z-obj/home/builds/ab/netbsd-3-0-RELEASE/src/sys/arch/i386/compile/GENERIC i386
 | >Description:
 | I export an ext2fs partition using NFS.
 | When I mount it on a Solaris box, it works using either NFSv2 and NFSv3.
 | However, when mounting it on a Linux box, NFSv3 doesn't work.
 | 
 | root@babe:~# mount -t nfs -o nfsvers=3 barney:/big /big
 | root@babe:~# ls /big
 | ls: reading directory /big: Input/output error
 | root@babe:~# umount /big
 | root@babe:~# mount -t nfs -o nfsvers=2 barney:/big /big
 | root@babe:~# ls /big
 | [Directory listing comes here]
 | 
 | Same problem when using an  SCO OpenServer client, but here with both NFSv2 and NFSv3:
 | 
 | bart#truss ls /big 2>&1 | grep EIO
 | getdents(3, 0x08329B70, 2048)                   Err#5  EIO
 | 
 | (have to use truss because  `ls' doesn't print out any error message)
 | 
 | Here's the tcpdump output when running `ls' on /big with NFSv3 under Linux:
 | 
 | 08:35:47.552875 IP (tos 0x0, ttl  64, id 54812, offset 0, flags [DF], proto: TCP (6), length: 52) babe.hinyx.info.1023 > barney.hinyx.info.nfs: ., cksum 0x53a5 (correct), 2156:2156(0) ack 1685 win 1728 <nop,nop,timestamp 16794340 72>
 | 
 | 08:35:57.296691 IP (tos 0x0, ttl  64, id 54813, offset 0, flags [DF], proto: TCP (6), length: 196) babe.hinyx.info.4274594373 > barney.hinyx.info.nfs: 144 getattr [|nfs]
 | 
 | 08:35:57.296877 IP (tos 0x0, ttl  64, id 10228, offset 0, flags [DF], proto: TCP (6), length: 168) barney.hinyx.info.nfs > babe.hinyx.info.4274594373: reply ok 116 getattr [|nfs]
 | 
 | [stops here]
 | 
 | Here's the uname -a output of the Linux box:
 | # uname -a
 | Linux babe 2.6.15-26-sparc64 #1 Thu Aug 3 02:59:18 UTC 2006 sparc64 GNU/Linux
 | 
 | It's an Ubuntu Server 6.06.1.
 | 
 | And by the way, if I suspect ext2fs, it's because the NetBSD machine exports an ffs NFS share as well, which works perfectly using NFSv3 on Linux and SCO boxes.
 | >How-To-Repeat:
 | Simply export an ext2fs partition using NFS and mount it with NFSv3 on a Linux box.
 | >Fix:
 | Using NFSv2 could be a workaround for Linuxes box.
 | Didn't found a fix for SCO OpenServer.
 
 what does rpcinfo -p say on the linux box?
 
 christos