From owner-freebsd-hackers Thu Apr 3 14:12:43 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id OAA19739 for hackers-outgoing; Thu, 3 Apr 1997 14:12:43 -0800 (PST) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.50]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id OAA19734 for ; Thu, 3 Apr 1997 14:12:39 -0800 (PST) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id OAA17387; Thu, 3 Apr 1997 14:55:48 -0700 From: Terry Lambert Message-Id: <199704032155.OAA17387@phaeton.artisoft.com> Subject: Re: CD format for backups ? To: joerg_wunsch@uriah.heep.sax.de Date: Thu, 3 Apr 1997 14:55:48 -0700 (MST) Cc: hackers@freebsd.org In-Reply-To: <19970403224454.SP47619@uriah.heep.sax.de> from "J Wunsch" at Apr 3, 97 10:44:54 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > > - use the partition (/dev/wd0f or /dev/rwd0f ?) as the source for the > > CD data > > > > then in order to read the data I would only want to mount /dev/wcd0c as > > FFS instead of cd9660 -- any hope that it works ? > > Well, UFS is currently still a little iffy when it comes to devices > that are not using 512 bytes blocksize. So, ``it depends''. You should be able to pick a block size of 16k (with a frag size of 1k) or a smaller block size, as long as the frag size does not go below 1k. There is a small issue on directory modifications for a directory block size smaller than the physical device block size (this is really a bug in /sys/ufs/ufs/ufs_dir.c), but it should not bite you as long as you are dealing with read-only media, where insertions are unlikely. 8-). Regards, Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.