(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.
No errors or other oddities at all being logged on NFS server, completely
quiet.
We will probably have to roll back to 2.4, esp. since I can't reproduce
this.
--
"Genius might be described as a supreme capacity for getting its possessors
into trouble of all kinds."
-- Samuel Butler
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