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To: Bruce Evans <bde@zeta.org.au>
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Subject: Re: scsi drives left locked by shutdown
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Bruce Evans wrote:
> 
> I use a zip drive for "/" and swap on a test machine.  Shutdown doesn't
> close the swap device, so scsi_prevent() isn't called to unlock the drive,
> so a hard reset is required to eject disks.
> 
> Bruce

maybe a use for the at_shutdown() call?
At one stage in the Berkeley BSD 4.4 course there was discussion
of adding "shutdown" entries to cdevsw entries..