Re: Crash when unmounting NFS/TCP with -f
From: Bill Davidsen
Date: Mon Apr 25 2005 - 11:54:56 EST
Brice Goglin wrote:
I'm using NFS (v2) over TCP (in a SSH tunnel).
Each time the SSH dies before a umount NFS, I have to umount -f
and I get a crash (only sysrq works).
Actually, the crash occurs a few seconds after umount -f.
It seems that killing SSH by hand does _not_ lead to crash.
But a long network failure does.
I remember seeing this bug several times with all stable releases
from 2.6.7 to 2.6.11. I didn't try with earlier versions.
I didn't see anything in the logs (after reboot). But I can't be sure
there was nothing in dmesg since I didn't get a chance to chvt 1 and
see console messages before rebooting (with sysrq).
Do you have any idea how to debug this ?
No clue, but a question: is this a hard or soft mount? Could you post
your ssh and mount commands, munged as needed for security? That might
give someone a clue.
I did this "back when" but I don't recall having a problem with it.
-bill davidsen (davidsen@xxxxxxx)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
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