On Mon, 2006-01-16 at 02:01 -0700, Michael Loftis wrote:
> (Sincere apologies if this gets posted twice, old habits die hard, and I
> was posting to rutgers instead of kernel.org!)
>
> We recently attempted to upgrade a completely working Linux 2.4 NFS
> environment to 2.6 based server, nothing else has changed, at all, just the
> server.
>
> On with the show, when did the 2.6 series NFS lose it's stateless ability?
> Now whenever I update NFS exports, or reboot the NFS server, I have to
> remount or reboot all NFS clients now. I thought part of the whole point
> of NFS is it is stateless. Indeed we didn't have this behavior before
> 2.6...
>
> Secondly we're getting weird intermittent failures, most easily seen by the
> webservers with logs along the lines of below, apparently random, and
> inconsistent. I removed the particular path and client from the below log
> entry. There is NOT a permissions problem on these elements. Subsequent
> accesses will (usually) succeed. Right after a reboot everything will be
> fine for a while...then after a bit the webserver starts to get these
> errors intermittently, with no apparent reasoning behind them. Again, with
> 2.4, we had nothing of the sort going on except in the (very very limited
> and few) legitimate cases caused by customers setting incorrect perms.
>
> [Sun Jan 15 12:14:00 2006] [error] [client a.b.c.d] (13)Permission denied:
> access to /path... failed because search permissions are missing on a
> component of the path
>
> Debian 3.1 Kernel 2.6.8-2-686-smp w/ ReiserFS on LVM on a qlogic QLA2342
> (2312) based PCI-X/133Mhz card.
AFAIK, most of these bugs have been fixed.
Please try to reproduce the problems on a more recent kernel, or get
Debian to backport the fixes.
Cheers,
Trond
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