--- Begin Message ---
Package: nfs-kernel-server
Version: 1:1.2.2-4
Severity: grave
Justification: renders package unusable
Hi there,
appologies if this has already been reported but I couldn't see anything quite matching what I'm seeing.
I have a 26TB debian squeeze fileserver providing NFS mounts to a large number of users. The system has been working flawlessly for a number of months but twice in the last week NFS seems to have crashed. The first thing I noticed is that users reported being unable to access shares. Logging into the system I see a single nfsd process taking 100% CPU with a very long run time. Restarting nfs-kernel-server has no effect. The process is unkillable (even with -9) and the system has required a reboot to get it usable again. jnettop is not showing significant network traffic and lsof on /export/ (where all my NFS exports are located) shows no nfs access to any files.
Please let me know if you need any further information. I am going to reboot the server now, so I may not be able to reproduce the problem straight away (but as its happened twice, I am quite sure it will happen again at some point...).
Thanks in advance for your help.
Dan Tomlinson
My /etc/exports file is below:
# /etc/exports: the access control list for filesystems which may be exported
# to NFS clients. See exports(5).
#
# Example for NFSv2 and NFSv3:
# /srv/homes hostname1(no_subtree_check,rw,sync,no_subtree_check) hostname2(ro,sync,no_subtree_check)
#
# Example for NFSv4:
#
# misc shares
/export/software 192.168.32.0/24(no_subtree_check,rw,sync,root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,root_squash,insecure)
/export/system_tools 192.168.32.0/24(no_subtree_check,rw,sync,no_root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,no_root_squash,insecure)
/export/home 192.168.32.0/24(no_subtree_check,rw,sync,root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,no_root_squash,insecure)
# flychip shares
/export/flychip/archives 192.168.32.0/24(no_subtree_check,rw,sync,root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,root_squash,insecure)
/export/flychip/misc 192.168.32.0/24(no_subtree_check,rw,sync,root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,root_squash,insecure)
/export/flychip/production 192.168.32.0/24(no_subtree_check,rw,sync,root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,root_squash,insecure)
/export/flychip/share 192.168.32.0/24(no_subtree_check,rw,sync,root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,root_squash,insecure)
/export/flychip/temp 192.168.32.0/24(no_subtree_check,rw,sync,root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,root_squash,insecure)
# mickelm shares
/export/micklem/releases 192.168.32.0/24(no_subtree_check,rw,sync,no_root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,no_root_squash,insecure)
/export/micklem/data 192.168.32.0/24(no_subtree_check,rw,sync,no_root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,no_root_squash,insecure)
# logic shares
/export/logic/data 192.168.32.0/24(no_subtree_check,rw,sync,no_root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,no_root_squash,insecure)
/export/logic/webdav 192.168.32.0/24(no_subtree_check,rw,sync,no_root_squash,insecure) 192.168.128.0/24(no_subtree_check,rw,sync,no_root_squash,insecure)
-- System Information:
Debian Release: 6.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/16 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages nfs-kernel-server depends on:
ii libblkid1 2.17.2-9 block device id library
ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib
ii libcomerr2 1.41.12-2 common error description library
ii libgssapi-krb5-2 1.8.3+dfsg-4 MIT Kerberos runtime libraries - k
ii libgssglue1 0.1-4 mechanism-switch gssapi library
ii libk5crypto3 1.8.3+dfsg-4 MIT Kerberos runtime libraries - C
ii libkrb5-3 1.8.3+dfsg-4 MIT Kerberos runtime libraries
ii libnfsidmap2 0.23-2 An nfs idmapping library
ii librpcsecgss3 0.19-2 allows secure rpc communication us
ii libwrap0 7.6.q-19 Wietse Venema's TCP wrappers libra
ii lsb-base 3.2-23.2squeeze1 Linux Standard Base 3.2 init scrip
ii nfs-common 1:1.2.2-4 NFS support files common to client
ii ucf 3.0025+nmu1 Update Configuration File: preserv
nfs-kernel-server recommends no packages.
nfs-kernel-server suggests no packages.
-- no debconf information
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