Date: Mon, 15 Jul 2002 08:04:14 +0200 From: Bernd Walter <ticso@cicely5.cicely.de> To: Rob <listone@deathbeforedecaf.net> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FFS on CD-ROM - can it be done? Message-ID: <20020715060413.GF63545@cicely5.cicely.de> In-Reply-To: <004a01c22b31$1b706da0$a4b826cb@goo> References: <004a01c22b31$1b706da0$a4b826cb@goo>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, Jul 14, 2002 at 09:52:22PM +0930, Rob wrote:
> Wise Ones,
>
> I'm trying to put a FFS filesystem on CD-ROM. My current attempt builds
> a virtual filesystem with vnconfig + disklabel + newfs, then writes the image
> file using burncd. I end up with something that half works - df and fsdb can
> see the filesystem, but ffsinfo and mount can't.
>
> # mount -r /dev/acd1c /mnt
> mount: /dev/acd1c on /mnt: incorrect super block
> # df -h /dev/acd1c
> Filesystem Size Used Avail Capacity Mounted on
> /dev/acd1c 678M 256M 368M 41%
> # ffsinfo /dev/acd1c
> ffsinfo: partition is unavailable
> # fsdb -r /dev/acd1c
> ** /dev/acd1c (NO WRITE)
>
> CANNOT READ: BLK 2048
> CONTINUE? yes
>
> THE FOLLOWING DISK SECTORS COULD NOT BE READ:
> Examining file system `/dev/acd1c'
> Last Mounted on /var/spool/cdrom-images/mount
> current inode: directory
> I=2 MODE=40755 SIZE=512
^^^^^^^^ Here is your problem!
> MTIME=Jul 6 16:17:23 2002 [0 nsec]
> CTIME=Jul 6 16:17:23 2002 [0 nsec]
> ATIME=Jul 6 16:23:36 2002 [0 nsec]
> OWNER=root GRP=wheel LINKCNT=5 FLAGS=0 BLKCNT=2 GEN=baec144
> fsdb (inum: 2)> q
CDs have a blocksize of 2048 bytes.
Therefor you need your filesystem newfs'ed with -f 2048.
--
B.Walter COSMO-Project http://www.cosmo-project.de
ticso@cicely.de Usergroup info@cosmo-project.de
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020715060413.GF63545>