Recently I tried to write an encrypted ext2fs to a CD-R. I basically
dd'ed a 650M file and created the encrypted fs in that file, then wrote
that file to the CD-R using cdwrite. I can mount the image via loopback
and all is well, but when I tried to do the same with the CD, the mount
fails with:
VFS: Can't find an ext2 filesystem on dev 07:00.
EXT2-fs error (device 07:00): ext2_check_descriptors: Block bitmap for group 0 not in group (block 365000324)!
EXT2-fs: group descriptors corrupted !
When I use losetup and attach the CD to a loop device, then run e2fsck
on it, it produces lots of block bitmap not in group errors. When I
dd the CD image to a file, the file shows no errors and mounts fine as
an encrypted ext2fs. BTW, a standard ext2fs works just fine written to
a CD-R.
I'm not familiar enough with ext2fs/encryption patch/CD drivers to know
where to look. My system is:
- Linux 2.0.29+"old" encryption patch (running on p133)
- mount-2.5k
- e2fsprogs-1.09
- Toshiba 3401B CD-ROM
- Phillips 2000 CD-R
- Adaptec 1542-CF
I would appreciate any help in getting this working.
Thanks,
James.
--
jtsiao@madoka.jpl.nasa.gov || SCSI is *NOT* magic. There are *fundamental
http://www.roadkill.com/thoth || technical reasons* why it is necessary to
|| sacrifice a young goat to your SCSI chain
#include <disclaimer.h> || now and then. -- jfw@proteon.com