kern/63605: Can't unmount DVDRAM with write protect
Jason Bacon
bacon at smithers.neuro.mcw.edu
Mon Mar 1 10:50:13 PST 2004
>Number: 63605
>Category: kern
>Synopsis: Can't unmount DVDRAM with write protect
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Mar 01 10:50:13 PST 2004
>Closed-Date:
>Last-Modified:
>Originator: Jason Bacon
>Release: FreeBSD 5.1-RELEASE i386
>Organization:
Medical College of Wisconsin
>Environment:
System: FreeBSD smithers.neuro.mcw.edu 5.1-RELEASE FreeBSD 5.1-RELEASE #1: Thu Feb 19 13:09:05 CST 2004 bacon at smithers.neuro.mcw.edu:/usr/obj/usr/src/sys/smithers i386
>Description:
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.
>How-To-Repeat:
Set write protect on a DVDRAM and mount it.
>Fix:
Workaround: camcontrol eject bus:target:lun will eject the disk,
but will not update the mount table.
>Release-Note:
>Audit-Trail:
>Unformatted:
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