On Wed, Jan 05, 2011 at 17:44:16, Marc Kleine-Budde wrote:

On 01/05/2011 12:27 PM, Russell King - ARM Linux wrote:

quoted

On Wed, Jan 05, 2011 at 12:05:17PM +0100, Uwe Kleine-K?nig wrote:

quoted

Hello Trond,

On Wed, Jan 05, 2011 at 09:40:14AM +0100, Uwe Kleine-K?nig wrote:

quoted

On Mon, Jan 03, 2011 at 07:22:38PM -0500, Trond Myklebust wrote:

quoted

The question is whether this is something happening on the server or the
client. Does an older client kernel boot without any trouble?

I will set up a boot test with 2.6.37 (for statistics) and 2.6.36 to
compare with.  If you don't consider .36 to be old enough let me now.
Once the setup is done it should be easy to test .35 (say), too.

Marc (cc'd) saw similar[1] problems with .37, when using .36.2 the
problems didn't occur.  This was more reliable to trigger and he was so
kind to bisect the problem.

When testing v2.6.36-rc3-51-gafa8ccc init hanged.
(babddc72a9468884ce1a23db3c3d54b0afa299f0 is the first bad commit with
this hang.)  Commit 56e4ebf877b6043c289bda32a5a7385b80c17dee makes the
"init hangs" problem the "fileid changed on tab" problem.

I could only reproduce that on armv5 machines (imx27, imx28 and at91)
but not on armv6 (imx35).

FYI, I've seen the "fileid changed" problem, and it looked like a 32-bit
truncation of the fileid.  It occurred several times on successive
reboots, so I tried to capture a tcpdump trace off the server (Linux
2.6.23-rc8-ga64314e6 - its ancient because I've had issues with buggy
IDE drivers trying to move it forward.)  However, for the last couple
of weeks I've been unable to reproduce it.

We have the problem with nfs-root. From the kernel command line:

root=/dev/nfs
nfsroot=192.168.23.2:/home/mkl/pengutronix/xxx/bsp/OSELAS.BSP-xxx-Grabowski-trunk/platform-Ronetix-PM9263/root,v3,tcp

/home/mkl/pengutronix is a link which points to a link
/ptx/work/octopus/mkl (which is a ext3-based) which points to
WORK_1/mkl which is also ext3-based.

The server is 2.6.32 and has been rebooted yesterday :), nfs-utils are
1.2.2. I make a tcpdump if needed.

I see the issue too with an ARMv5 based DM355 board with the just released
v2.6.37 tag (nfs client). I too see the issue when using bash tab completion.

Here are some logs:

fileid changed fsid 0:c: expected fileid 0x2db61d, got 0x2dad20

fileid changed fsid 0:c: expected fileid 0x100000000000, got 0x7070000000000000

I am using Fedora 8 (2.6.25 kernel) on the server side. I will try the latest
Ubuntu release on the server side and test.

Thanks,
Sekhar