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Date:      Fri, 19 Oct 2001 21:51:10 -0700 (PDT)
From:      Matthew Dillon <dillon@apollo.backplane.com>
To:        Doug Swarin <doug@staff.texas.net>
Cc:        hackers@FreeBSD.ORG, tmoestl@gmx.net, bp@FreeBSD.ORG
Subject:   Re: more on Re: Please review: bugfix for vinvalbuf()
Message-ID:  <200110200451.f9K4pAU49727@apollo.backplane.com>
References:  <20010711003926.B8799@crow.dom2ip.de> <200107110643.f6B6hTB24707@earth.backplane.com> <20010926204333.A15865@staff.texas.net> <200109281747.f8SHlUP29063@earth.backplane.com> <20011019212807.A538@staff.texas.net>

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:
: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

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