[ILUG] mount errors.

[Liam O'Hagan]

Hi All,


I've written a script which generates an iso containing about 60,000 files
totalling about 3.5GB and then writes the iso to two internal DVD drives
one after the other using dvdrecord.

The iso is created with -JR arguments

After writing I'm unable to mount the dvd devices, getting the following
error :

"mount: wrong fs type, bad option, bad superblock on /dev/cdrom, or too
many mounted file systems"

Additionally, the following kernel messages were logged for each of the
failed mount attempts.

isofs_read_super: bread failed, dev=0b:00, iso_blknum=16, block=16
isofs_read_super: bread failed, dev=0b:01, iso_blknum=16, block=16


The write operation was successful as I can read the discs in another
machine. If the first machine is rebooted I can then mount the devices and
read the discs. However, rebooting is obviously not the solution to the
problem.


Machine   : Dell Poweredge 1400
OS        : RedHat 9
mkisofs   : v2.0.6
dvdrecord : 0.1.2-10
Drives    : hdc: IOMEGA DVDRW4216IND-A, ATAPI CD/DVD-ROM drive
          : hdd: IOMEGA DVDRW4216IND-A, ATAPI CD/DVD-ROM drive

The following arguments are passed to the kernel at boot :
hdc=ide-scsi hdd=ide-scsi


The generated iso is mountable with "mount -o loop -tiso9660 nlc.iso
/mnt/nlc_iso"

I also tried "mount /dev/cdrom -tiso9660 /mnt/cdrom" with no change in
results.

Googling has revealed a number of similar problems but I haven't found an
answer. Any hints/pointers (or complete solutions) welcomed.

Regards,

Liam