kern/63605: Can't unmount DVDRAM with write protect
kris at obsecurity.org
Sat Mar 6 01:10:10 PST 2004
The following reply was made to PR kern/63605; it has been noted by GNATS.
From: Kris Kennaway <kris at obsecurity.org>
To: Jason Bacon <bacon at smithers.neuro.mcw.edu>
Cc: FreeBSD-gnats-submit at FreeBSD.org
Subject: Re: kern/63605: Can't unmount DVDRAM with write protect
Date: Sat, 6 Mar 2004 01:05:07 -0800
On Mon, Mar 01, 2004 at 12:40:51PM -0600, Jason Bacon wrote:
> If a DVDRAM is mounted with the write-protect enabled, attempts
> to unmount will produce the error:
> umount: umount of /dvdram failed: resource temporarily unavailable
> Presumably, there is some pending write operation that cannot be
> completed. I think the system is missing the fact that the write
> protect is on, and mounting rw. It should detect the write-protect
> upon mounting, and automatically mount read-only.
> Set write protect on a DVDRAM and mount it.
> Workaround: camcontrol eject bus:target:lun will eject the disk,
> but will not update the mount table.
How are you mounting the disk? Read-only disks should be mounted
read-only; this may be the problem.
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