nfs export problems

Waleed Harbi waleed.harbi at
Sat Oct 16 19:31:39 UTC 2010

***Is the kernel & nfsd version releases packages are same on all servers?
Best Wishes,
Waleed Harbi

Dream | Do | Be

On Sat, Oct 16, 2010 at 10:13 PM, kristau <kristau at> wrote:

> On Fri, Oct 15, 2010 at 1:41 AM, Patrick Hornecker
> <phornecker at> wrote:
> > hi,
> > im using nfs version 3 to export data of several raids over the network.
> the
> > raids are attached to different server which are running ubuntu 10.04.
> the
> > exported raids are using xfs as filesystem.
> > On one server occurs a random freeze of the nfsd. if this happens, the
> > exported raid is not accessable over the network anymore. if a user wants
> to
> > open the directory with his shell, the shell freezes.
> > i haven't found any known bugs or problems, which fit to this problem. do
> > you have any suggestions oder maybe a known fix of this problem?
> > thanks in advance and regards,
> > patrick
> Patrick:
> If all of the hosts are the same, but only one is acting up in this
> manner, I would suspect a hardware or driver issue on the host having
> the problem. Beyond that, try isolating the differences between the
> malfunctioning host and the others.
> If they are all using the same hardware, this should be easy. If the
> hardware is different, then you may try replacing the differing
> hardware. For example, if a working host uses a specific type of RAID
> controller which is different from the host with the issue, try
> changing the malfunctioning host's RAID controller to that brand and
> model.
> If all the hardware is the same, try swapping RAID controllers between
> systems to see if the problem follows the RAID controller or stays
> with the system. Make sure the drivers are the same between the two
> systems.
> Again, if this were a general bug in Ubuntu I would expect the problem
> to be the same on all your systems. Since it is only one system acting
> up, I strongly suspect a hardware (most likely), driver (likely), or
> configuration (least likely) issue on that one system.
> Happy hunting and good luck!
> --
> Tired programmer
> Coding late into the night
> The core dump follows
> --
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