Hi! I try to format a loop-aes encrypted DVD-RAM in /dev/sr0 with mke2fs. ,----[command line] | eagle:~# losetup -v -e AES256 -K ./key.gpg /dev/loop2 /dev/sr0 | Password: | eagle:~# losetup /dev/loop2 | /dev/loop2: [000b]:985 (/dev/sr0) encryption=AES256 multi-key-v3 | eagle:~# mke2fs -K -N 2048 -m 0 -b 4096 -v /dev/loop2 | mke2fs 1.41.12 (17-May-2010) | fs_types for mke2fs.conf resolution: 'ext2', 'default' | Filesystem label= | OS type: Linux | Block size=4096 (log=2) | Fragment size=4096 (log=2) | Stride=0 blocks, Stripe width=0 blocks | 2240 inodes, 1118352 blocks | 0 blocks (0.00%) reserved for the super user | First data block=0 | Maximum filesystem blocks=1149239296 | 35 block groups | 32768 blocks per group, 32768 fragments per group | 64 inodes per group | Superblock backups stored on blocks: | 32768, 98304, 163840, 229376, 294912, 819200, 884736 | | Writing inode tables: done | Writing superblocks and filesystem accounting information: done | | This filesystem will be automatically checked every 29 mounts or | 180 days, whichever comes first. Use tune2fs -c or -i to override. | eagle:~# echo $? | 0 | eagle:~# `---- After the successfull mke2fs run ($? = 0) I have got this error message in syslog: ,----[/var/log/syslog] | Mar 27 15:29:27 eagle kernel: loop2: loop_end_io_transfer err=-95 bi_rw=0x461 | Mar 27 15:29:27 eagle kernel: Buffer I/O error on device loop2, logical block 0 | Mar 27 15:29:27 eagle kernel: lost page write due to I/O error on loop2 | Mar 27 15:29:27 eagle kernel: loop2: loop_end_io_transfer err=-95 bi_rw=0x20 | Mar 27 15:29:27 eagle kernel: Buffer I/O error on device loop2, logical block 0 `---- And I'm not able to mount the freshly created file system: ,----[command line] | eagle:~# mount -text2 /dev/loop2 /media/backup/ | mount: wrong fs type, bad option, bad superblock on /dev/loop2, | missing codepage or helper program, or other error | In some cases useful info is found in syslog - try | dmesg | tail or so | | eagle:~# `---- ,----[/var/log/syslog] | Mar 27 15:30:40 eagle kernel: EXT2-fs (loop2): error: can't find an ext2 filesystem on dev loop2. `---- Do I the same without encryption this means: ,----[command line] | eagle:~# mke2fs -K -N 2048 -m 0 -b 4096 -v /dev/sr0 | mke2fs 1.41.12 (17-May-2010) | /dev/sr0 is entire device, not just one partition! | Proceed anyway? (y,n) y | fs_types for mke2fs.conf resolution: 'ext2', 'default' | Filesystem label= | OS type: Linux | Block size=4096 (log=2) | Fragment size=4096 (log=2) | Stride=0 blocks, Stripe width=0 blocks | 2240 inodes, 1118352 blocks | 0 blocks (0.00%) reserved for the super user | First data block=0 | Maximum filesystem blocks=1149239296 | 35 block groups | 32768 blocks per group, 32768 fragments per group | 64 inodes per group | Superblock backups stored on blocks: | 32768, 98304, 163840, 229376, 294912, 819200, 884736 | | Writing inode tables: done | Writing superblocks and filesystem accounting information: done | | This filesystem will be automatically checked every 30 mounts or | 180 days, whichever comes first. Use tune2fs -c or -i to override. | eagle:~# mount -text2 /dev/sr0 /media/backup/ | eagle:~# `---- It just works fine but unencrypted :-(. I guess it is a problem with loop-aes. Have someone an idea how I can track this down or has someone seen this already? My recipe above did work two years ago. I have a couple of working formatted DVD-RAM from this time. Only e2fsck doesn't work any longer in fact with the same behavior as mke2fs above this means $? = 0 and the same errors in /var/log/syslog. Thanks for help Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html