Package: linux-image-2.6.26
Version: nfsfix.1
Severity: important

When an export is exported and mounted via autofs using BOTH
NFSv3 and NFSv4 the NFSv4 one deadlocks.

Setup - transition from v3 to v4.

System A is still perusing the old map:
cat /etc/auto.local | grep iPodResolution
iPodResolution          -rsize=4096,wsize=4096,rw   eden:/exports/md4/videoiPod

System B is using the newever version of same map with a v4 mount:
cat /var/yp/auto.local | grep iPodResolution
iPodResolution          -fstype=nfs4   eden:/md4/videoiPod

If system B is writing to the mount and A is reading from it B starts getting 
I/O errors/BAD FDs. If B is running from disk lots of things fail. If B is
running diskless - total lock up. 

Same setup with V3 only has been working flawlessly for 5+ years. Same setup 
with 
V4 only (when the v3 machines are off) seems to work OK as well.

Fairly easy to reproduce.

I am not sure at this point if autofs has any role in this and I will not be in 
a position to retest until 19th. Apologies.

Tested with: stock debian, older version with just the nfs regression fix, 
stock recompiled with preempt, 686 and 486 versions.

-- System Information:
Debian Release: 5.0.3
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-2-686 (SMP w/1 CPU core)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages linux-image-2.6.26 depends on:
ii  coreutils                     6.10-6     The GNU core utilities
ii  debconf [debconf-2.0]         1.5.24     Debian configuration management sy

linux-image-2.6.26 recommends no packages.

Versions of packages linux-image-2.6.26 suggests:
ii  fdutils                   5.5-20060227-3 Linux floppy utilities
pn  ksymoops                  <none>         (no description available)
pn  linux-doc-2.6.26 | linux- <none>         (no description available)

-- debconf-show failed



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