I'm trying to use an iso or cramfs image as a ubd device with a command
line option. However, I am unable to mount either iso9660 or cramfs
type filesystems. This is the setup:
host$ mkdir iso_tmp
host$ mkdir cramfs_tmp
host$ echo hello > iso_tmp/hello.txt
host$ echo hello > cramfs_tmp/hello.txt
host$ mkisofs -R -q -o iso_tmp.iso iso_tmp
host$ mkcramfs cramfs_tmp cramfs_tmp_fs
host$ linux ubd0=ext2_fs ubd1=iso_tmp.iso ubd2=cramfs_tmp_fs
uml# mount -t iso9660 /dev/ubd1 /opt
mount: wrong fs type, bad option, bad superblock on /dev/ubd1,
or too many mounted file systems
(could this be the IDE device where you in fact use
ide-scsi so that sr0 or sda or so is needed?)
uml# mount -t cramfs /dev/ubd2 /opt
mount: wrong fs type, bad option, bad superblock on /dev/ubd2,
or too many mounted file systems
(could this be the IDE device where you in fact use
ide-scsi so that sr0 or sda or so is needed?)
uml syslog shows:
Unable to identify CD-ROM format.
cramfs: wrong magic
I've also tried copying these files from the host to the uml machine
using scp. In this case I am able to mount both the iso9660 and the
cramfs as loopback devices.
Any suggestions would be great.
Casey
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