From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick Mansfield Subject: Re: [PATCH] mount -w of dvd+rw etc. in vanilla 2.6 Date: Wed, 10 Sep 2003 15:49:29 -0700 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20030910154929.B3367@beaverton.ibm.com> References: <1063217791.3669.43.camel@patehci2> <1063219776.3669.72.camel@patehci2> <1063224520.3669.115.camel@patehci2> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from e1.ny.us.ibm.com ([32.97.182.101]:53153 "EHLO e1.ny.us.ibm.com") by vger.kernel.org with ESMTP id S265932AbTIJWuG (ORCPT ); Wed, 10 Sep 2003 18:50:06 -0400 Content-Disposition: inline In-Reply-To: <1063224520.3669.115.camel@patehci2>; from p.lavarre@ieee.org on Wed, Sep 10, 2003 at 02:08:40PM -0600 List-Id: linux-scsi@vger.kernel.org To: Pat LaVarre , axboe@suse.de Cc: linux-scsi@vger.kernel.org On Wed, Sep 10, 2003 at 02:08:40PM -0600, Pat LaVarre wrote: > # /sbin/blockdev --setro /dev/scd1 > # /sbin/blockdev --getro /dev/scd1 > 1 > # dd of=/dev/scd1 if=/dev/zero bs=2K count=1 > dd: opening `/dev/scd1': Read-only file system > # > > So far so good, but then: > > # /sbin/blockdev --setrw /dev/scd1 > # /sbin/blockdev --getro /dev/scd1 > 0 > # dd of=/dev/scd1 if=/dev/zero bs=2K count=1 > dd: opening `/dev/scd1': Read-only file system > # > > That is, no matter if --getro is 0 or 1, still we do not write. The > default I see here is 0, but still I cannot write. Should sd.c and sr.c be calling set_device_ro (after adding a read only block device, or changing back to read/write)? -- Patrick Mansfield