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SubjectRe: Cannot mount old ext2 cdrom, but e2fsck shows no problems
On Tuesday 05 June 2001 02:36, Nick Urbanik wrote:
> Dear folks,
> I made 18 ext2 cdroms in October 1998 using an old (new at the time) Red
> Hat system. Now I can't mount them. e2fsck shows no problems. I also
> can dd them to a file, then mount the file. But I want to be able to
> simply access them directly. Current system: RH 7.1 with all updates.
> Sorry, I can't remember the exact command I used to create the images.
> I also want to better understand the output of dumpe2fs, and how to
> relate this to mount.

I think you are running into a block size issue. I notice your fs
block size is only 1024. See if you can mount it on an IDE CDROM
drive. I ran into the same problem with file systems with a block
size of 1024 when using the ide-scsi module because it saw the device
bs as being 4096. You cannot mount a file system with block size
smaller than the device. I would unload the the ide-scsi modules and
mount it as /dev/hdxx and it mounted just fine. I started specifying
the bs to be 4k when creating the file system to backup to CD and the
problem went away. The error message was deceiving. I did not
discover what it was until I left X windows and tried it from the
console and finally got an error relating to block size.

- Vincent Stemen

> $ dumpe2fs -h /dev/scd0
> dumpe2fs 1.19, 13-Jul-2000 for EXT2 FS 0.5b, 95/08/09
> Filesystem volume name: <none>
> Last mounted on: <not available>
> Filesystem UUID: 7eb1b040-59f7-11d2-9e35-002018530df2
> Filesystem magic number: 0xEF53
> Filesystem revision #: 0 (original)
> Filesystem features: (none)
> Filesystem state: clean
> Errors behavior: Continue
> Filesystem OS type: Linux
> Inode count: 166624
> Block count: 665600
> Reserved block count: 33280
> Free blocks: 142206
> Free inodes: 153910
> First block: 1
> Block size: 1024
> Fragment size: 1024
> Blocks per group: 8192
> Fragments per group: 8192
> Inodes per group: 2032
> Inode blocks per group: 254
> Last mount time: Fri Oct 2 21:06:45 1998
> Last write time: Fri Oct 2 23:53:28 1998
> Mount count: 3
> Maximum mount count: 20
> Last checked: Fri Oct 2 20:57:46 1998
> Check interval: 15552000 (6 months)
> Next check after: Wed Mar 31 20:57:46 1999
> Reserved blocks uid: 0 (user root)
> Reserved blocks gid: 0 (group root)
> (I originally sent this to the Red Hat list, but there was no response).
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