From owner-freebsd-current Wed Oct 9 12: 0:36 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3EAED37B401; Wed, 9 Oct 2002 12:00:35 -0700 (PDT) Received: from mailman.zeta.org.au (mailman.zeta.org.au [203.26.10.16]) by mx1.FreeBSD.org (Postfix) with ESMTP id A713443E7B; Wed, 9 Oct 2002 12:00:33 -0700 (PDT) (envelope-from bde@zeta.org.au) Received: from bde.zeta.org.au (bde.zeta.org.au [203.2.228.102]) by mailman.zeta.org.au (8.9.3/8.8.7) with ESMTP id FAA17622; Thu, 10 Oct 2002 05:00:30 +1000 Date: Thu, 10 Oct 2002 05:10:36 +1000 (EST) From: Bruce Evans X-X-Sender: bde@gamplex.bde.org To: "David O'Brien" Cc: Poul-Henning Kamp , Subject: Re: My problems with GEOM In-Reply-To: <20021009151926.GA19223@dragon.nuxi.com> Message-ID: <20021010045131.T6361-100000@gamplex.bde.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, 9 Oct 2002, David O'Brien wrote: > Also SCSI CDROM's are now only mountable as /dev/cd0, not /dev/cd0a as > before. I wonder how many others got hit by that. Apparently not as many as got hit by the block number scaling bug. I guess most users only have atapi cdroms. This is a good change, but needs time for conversion. The SCSI CDROM driver has some very nice new bugs apart from broken label contents. I have noticed the following so far: - b_pblkno seems to be unitialized. I think it is always 0, This affects mainly disksort^Wbioq_disksort(). The driver used to use b_pblkno internally and the scaling bug was introduced by replacing this by b_blkno and fixed by scaling b_blkno to the value that b_pblkno should be set to. - block sizes and offsets that are not a multiple of the sector size are now accepted, but don't work. E.g., dd with a block size of 1 byte doesn't fail, but produces garbage. - offsets beyond EOF are now accepted in software and are only rejected in hardware. This spams the console with error messages and gives wrong error handling (EIO; should be EOF (no error)). Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message