*BSD News Article 30363


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From: tinguely@plains.NoDak.edu (Mark Tinguely)
Subject: Re: Reading 8mm tape under FreeBSD 1.0.2
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Date: Wed, 11 May 1994 14:24:03 GMT
References: <1994May10.045408.11205@ticipa.pac.sc.ti.com>
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In article <1994May10.045408.11205@ticipa.pac.sc.ti.com> rmfowler@landru.mtc.ti.com (Rex Fowler) writes:
>AHA 1542CF SCSI adapter, FreeBSD 1.02.
>
>What steps should I have to perform in order to read a 2Gb 8mm tape
>written in the following steps?
>
># shutdown -r now             (make sure tape drive is at defaults)
># tar cvf /dev/rst0 .         (writes tape without problem)
># tar tvf /dev/rst0           (reads fine)
># shutdown -r now
># tar tvf /dev/rst0           (error, won't read tape)
>	st0: medium error, info = 10 (decimal)

This may not answer your question, but we have always see a reboot trash a
mounted 8mm tape on our Sparc machines. I can see tape activity when it is
initialized, I wonder if the unit does some test write that trashes the
data.

--mark.