Re: bin/38171 (mount_ffs doesn't work on CDs)

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR bin/38171; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: bin/38171 (mount_ffs doesn't work on CDs)
Date: Mon, 7 Feb 2011 06:07:56 +0000

 On Mon, Jan 31, 2011 at 07:10:05PM +0000, Michael L. Hitch wrote:
  >     I may have some DEC ufs CDs - but the problem is almost certainly that
  >  the ufs is written using 512 byte blocks, and CDROM drives used by old DEC
  >  systems present the CD data as 512 blocks (although they are recorded on
  >  the CDROM as 2048 byte blocks.
 
 Yeah, a closer look at the dumpfs output shows that the filesystem has
 a fragsize of 1024, which is just not going to work with 2048-byte
 device-level blocks without extra compat code.
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost