A.P. Lawrence

panic from bad hard drive

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From: Bill Walker <bw@cs4.ecok.edu>
Subject: Re: Panic trap solved
Date: Wed, 12 Dec 2001 18:40:30 GMT

This reports that we seem to have found a solution to frequent and
unexplained "panic trap" messages on our SCO OSR 5.0.5 machines.

I had posted earlier to this newsgroup seeking advice, and I received
plenty, but to no avail.

We have a rather large bank of disk drives.  One partition on one
of the drives had failed, and we had simply "unmounted" that partition
and not used it.  Three other partitions on the same drive worked
flawlessly, but we still kept them all unmounted.  Eventually, we
reformatted the drive altogether, and put it back into service, but
it still seemed to have some "funny" behavior.  fsck would report
an occasional problem on the partition that had given the errors
in the first place.  "fsck -ofull -y" usually seemed to "fix it".

When we physically removed the disk drive from the cabinet, the panic
traps went away, and have not returned.  (Weeks ago, now.)

Moral:  It's not always where you think, and in spite of all reason,
"bad vibes" come from broken hardware.

73 de Bill W5GFE

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