http://bugzilla.kernel.org/show_bug.cgi?id=9400
Summary: nfsd gets stuck when underlying filesystem is XFS
Product: File System
Version: 2.5
KernelVersion: 2.6.24-rc2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: XFS
AssignedTo: xfs-masters@xxxxxxxxxxx
ReportedBy: lists@xxxxxxxxxxxxxxx
Most recent kernel where this bug did not occur: 2.6.23.1
Distribution: Debian/unstable, i386
Hardware Environment: AMD 2600+, 2GB RAM, see
http://nerdbynature.de/bits/2.6.24-rc2/nfsd/dmesg.2.gz
Software Environment: nfs-kernel-server 1.1.1-8
Problem Description:
Exported NFS shares can be mounted (client: 2.6-git/powerpc32,
nfs-common-1.1.1~git-20070709-3ubuntu1), but running "ls /mountpoint" (even
without "-l") on the client is enough to get the [nfsd] processes in "D" state.
Doing this again will put more [nfsd] processes in "D" state and the loadavg
is incremented +1.
Restarting the rpc.nfsd process on the
does not help much, the new rpc.nfsd processes get stuck quickly.
This has been reported by Chris Wedgwood too:
http://lkml.org/lkml/2007/11/14/50
More details: http://www.nerdbynature.de/bits/2.6.24-rc2/nfsd/
Steps to reproduce:
http://www.nerdbynature.de/bits/2.6.24-rc2/nfsd/debug.txt.gz
Workarounds:
* mount -o vers=2 (tested, works)
* mount -o vers=3,nordirplus
* set CONFIG_NFSD to "depends on !XFS && ..."
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