Messages in this thread | | | Subject | Re: Crash when unmounting NFS/TCP with -f | From | Trond Myklebust <> | Date | Fri, 22 Apr 2005 09:39:10 -0400 |
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fr den 22.04.2005 Klokka 14:32 (+0200) skreiv Brice Goglin: > Hi Trond, > > 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).
I'll try to reproduce. There has just been a discussion about "umount -f" on the NFS mailing list (nfs@lists.sourceforge.net), where Peter Cendio said he was seeing the following Oops:
http://www.cendio.se/~peter/fc3-umount-crash.png
I am unable to reproduce Peter's crash, but I didn't try the scenario that you describe above.
Cheers, Trond -- Trond Myklebust <trond.myklebust@fys.uio.no>
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