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Date:      Sun, 05 Mar 2000 23:11:03 -0500
From:      "David E. Cross" <crossd@cs.rpi.edu>
To:        dillon@backplane.com
Cc:        freebsd-hackers@freebsd.org, crossd@cs.rpi.edu
Subject:   vmpfw, again...
Message-ID:  <200003060411.XAA23516@cs.rpi.edu>

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I have 2 cores from machines in the aforementioned state.  What should I do?

For those not playing at home, it appears there is some sort of deadlock
situation in the NFS or VM system.  The indication of this is a process that
blocks in 'vmpfw' for no apparent reason.  All other transactions to that
same filesystem continue per normal.  A specific interaction to that same file
will block.  For example say that 'emacs' has entered the 'vmpfw' state,
other transactions to the same FS will continue unimpeded, but
'cat emacs >/dev/null' will also enter eternal disk-wait without ever any
kernel messages.

--
David Cross                               | email: crossd@cs.rpi.edu 
Acting Lab Director                       | NYSLP: FREEBSD
Systems Administrator/Research Programmer | Web: http://www.cs.rpi.edu/~crossd 
Rensselaer Polytechnic Institute,         | Ph: 518.276.2860            
Department of Computer Science            | Fax: 518.276.4033
I speak only for myself.                  | WinNT:Linux::Linux:FreeBSD


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