On Fri, Oct 19, 2001 at 09:51:10PM -0700, Matthew Dillon wrote:
> 
> :
> :Unfortunately, the recent patch to vinvalbuf() hasn't solved all of
> :our problems. We had another, different panic today. The process that
> :caused it was a 'tail' of a growing logfile over NFS.
> :
> :I have actually had this problem before, with FreeBSD 3.4, and reported
> :it then. I believed this PR to be relevant at the time, however, I do
> :not believe this client was writing to the file.
> :
> :   [1998/06/23] kern/7028  http://www.freebsd.org/cgi/query-pr.cgi?pr=7028
> :   panic in vinvalbuf when appending/looking at tail of NFS file
> :
> :The system is running 4.4-RELEASE with the vinvalbuf() patch. Debugging
> :information is below. If I can provide any  additional information,
> :let me know.
> :
> :Thanks for any help,
> :Doug
> 
>     How easily can you reproduce this?  How often does it occur if you
>     leave a tail running?
> 
>                                       -Matt

I'm not able to reproduce this at will at the moment. The PR I mention
has a program which it claims can cause the crash, which I will try
running. I'll also try tailing various logfiles, including the one which
caused this crash, which is being written to on the machine that is the
NFS server.

Doug

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