From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pat LaVarre <p.lavarre@ieee.org>
Subject: open write failure not predicted by blockdev getro
Date: 13 Jul 2004 15:38:37 -0600
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To: Jens Axboe <axboe@suse.de>
Cc: linux-scsi@vger.kernel.org

> Subject: Re: [PATCH] fix cdrom mt rainier probe

Does the reverse inconsistency also interest you?

By inserting a read-only DVD disc into a USB drive, I get to see the
paradoxical contradiction:

$ uname -msr
Linux 2.6.8-rc1 i686
$
$ sudo blockdev --getro /dev/scd0
0
$ sudo dd of=/dev/scd0 bs=64K count=1 if=/dev/zero
dd: opening `/dev/scd0': Read-only file system
$

I trust you'll tell me if I can help further.

Pat LaVarre