On Aug 4, 2008, at 4:55 PM, Paul Collins wrote:
Chuck Lever <chuck.lever@xxxxxxxxxx> writes:
On Aug 3, 2008, at 11:10 AM, J. Bruce Fields wrote:
On Mon, Aug 04, 2008 at 12:37:19AM +1200, Paul Collins wrote:
"J. Bruce Fields" <bfields@xxxxxxxxxxxx> writes:
On Fri, Aug 01, 2008 at 11:15:33PM +1000, Aníbal Monsalve Salazar
wrote:
On Mon, Jul 28, 2008 at 03:13:19AM -0400, Steve Dickson wrote:
I just cut the 1.1.3 nfs-utils release. Unfortunately I'm having
issues accessing my kernel.org account so for the moment the
tar ball is only available on SourceForge:
http://sourceforge.net/projects/nfs
[...]
1.1.3 clients don't work with a 1.0.10 server anymore.
Very weird--it might make sense if upgrading nfs-utils broke the
mount
itself, but here it seems the mount is succeeding and subsequent
file
access (which I'd expect to only involve the in-kernel client
code) is
failing. Maybe there's some difference in the mount options?
What does
/proc/self/mounts say? I assume these are all v2 or v3 mounts?
I discovered today that I was no longer able to write to the v3
mount on
my 1.1.2 server. I checked /proc/mounts and noticed sec=null on
the
mount. Either adding sec=sys to the client's mount options or
downgrading to nfs-common 1.1.2 on the client fixes the problem.
That would do it!
So it sounds like there's a bug that causes mount.nfs to get the
default
mount options wrong?
I'm not sure I'm following this. I can't think of a user-space
mount.nfs change in 1.1.3 that would affect the sec= option.
Paul, which kernel are you running on your clients?
Either 2.6.26 or 2.6.27-rc1+. I'll double-check.
It would be interesting if you could try both. I suspect 2.6.26
doesn't exhibit this problem, as 27-rc1 has changes in the NFS mount
parser that affect "sec=".
Also, enabling NFS mount debugging messages when performing the mount
that eventually doesn't work would be enlightening (for me). Either:
sudo sysctl -w sunrpc.nfs_debug=2048
or if you have the latest rpcdebug installed:
sudo rpcdebug -m nfs -s mount
Then perform the mount. Take a look in /var/log/messages for the
debugging messages.
And, please send the full command line of the failing mount request.
Whichever one it was, the problem was present with 1.1.3 installed,
and
not present with 1.1.2 installed.
Gotcha.
--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com--
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