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Date:      Thu, 22 Apr 1999 21:31:46 -0700 (PDT)
From:      Matthew Dillon <dillon@apollo.backplane.com>
To:        "David E. Cross" <crossd@cs.rpi.edu>
Cc:        freebsd-hackers@FreeBSD.ORG, crossd@cs.rpi.edu, schimken@cs.rpi.edu
Subject:   Re: what are the possible causes of the following...
Message-ID:  <199904230431.VAA19604@apollo.backplane.com>
References:   <199904230424.AAA26019@cs.rpi.edu>

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:In the logs for a machine:
:vm_fault: pager read error, pid 26656 (valtest)
:vm_page_free: freeing wired page
:Apr 22 20:40:00 monica /kernel: pid 26656 (valtest), uid 2436: exited on signal 11
:...
:...
:Apr 22 21:11:32 monica routed ....
:panic: vm_page_unwire: invalid wire count: 0
:
:It seems obvious the 3 messages are all tied together.  What would cause the 
:first (whihc is the apparent cause of the other, and the final panic).  
:There is no mention anywhere in the logs of mechanical difficulties.  The
:swap disk is a <Maxtor 84320D4>, DMA, 32-bit, multi-block-16>.
:
:(the other messages ahre there just to provide a time context for when this
:happened.)
:--
:David Cross                               |  email: crossd@cs.rpi.edu 
:Systems Administrator/Research Programmer |  Web: http://www.cs.rpi.edu/~crossd 

    Where is the valtest binary?  Over NFS?  Did you compile up a new binary
    while a client was running the old one?  This is the most typical cause
    of a pager read error.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>



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