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Date:      Thu, 3 Apr 1997 14:55:48 -0700 (MST)
From:      Terry Lambert <terry@lambert.org>
To:        joerg_wunsch@uriah.heep.sax.de
Cc:        hackers@freebsd.org
Subject:   Re: CD format for backups ?
Message-ID:  <199704032155.OAA17387@phaeton.artisoft.com>
In-Reply-To: <19970403224454.SP47619@uriah.heep.sax.de> from "J Wunsch" at Apr 3, 97 10:44:54 pm

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> > - 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.



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