Comment 14 for bug 879334

I converted my NFS server (which started life many Ubuntus ago,
probably as a 7.04 server) to v4 exports which solved my problem.

A newer Ubuntu server installation works fine as v3 server, so the
problem is probably caused by some old left over configuration

2011/12/16 Nobuaki Nakamura <email address hidden>:
> in kernel 3.0.0-14-server too.
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> Title:
>  nfsd from nfs-kernel-server very slow and system load from 25%-100%
>  from nfsd
> Status in “nfs-utils” package in Ubuntu:
>  Confirmed
> Bug description:
>  I have a diskless ubuntu 10.10 machine which I boot regularly using
>  pxe-boot from another ubuntu machine where I have the root filesystem
>  of the diskless machine exported over nfs.
>  I set it up about a year ago using 10.10. In the mean while the server
>  machine got upgraded to 11.04 and as of yesterday to 11.10.
>  After the upgrade to 11.10 the diskless machine is dead slow (most of
>  the times it wont even boot completely) and the load on the server
>  machine is high (25%-100% as shown from top). If in the middle of the
>  diskless computer booting I do a restart of the nfs server, the client
>  computer proceeds with the boot a bit more and then it gets stuck
>  again. I have to restart and nfs-server 3-4 times in order to get the
>  gdm login screen at the client machine
>  ProblemType: Bug
>  DistroRelease: Ubuntu 11.10
>  Package: nfs-kernel-server 1:1.2.4-1ubuntu2
>  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
>  Uname: Linux 3.0.0-12-generic i686
>  ApportVersion: 1.23-0ubuntu3
>  Architecture: i386
>  Date: Fri Oct 21 12:53:02 2011
>  ProcEnviron:
>   LANG=en_US.UTF-8
>   SHELL=/bin/bash
>  SourcePackage: nfs-utils
>  UpgradeStatus: Upgraded to oneiric on 2011-10-20 (1 days ago)
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