created a crypto dev on a 1g usb key on f12. Tried to mount it under f13, it fails. creation: (18:17:45:root@gelk:~)# dd if=/dev/zero of=/dev/sdg bs=1M dd: writing `/dev/sdg': No space left on device 982+0 records in 981+0 records out 1028653056 bytes (1.0 GB) copied, 247.166 s, 4.2 MB/s (18:22:12:root@gelk:~)# cryptsetup create test /dev/sdg Enter passphrase: (18:25:22:root@gelk:~)# mkfs.ext2 /dev/mapper/test mke2fs 1.41.9 (22-Aug-2009) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) 62848 inodes, 251136 blocks 12556 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=260046848 8 block groups 32768 blocks per group, 32768 fragments per group 7856 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376 Writing inode tables: done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 31 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override. (18:25:39:root@gelk:~)# mount /dev/mapper/test /mnt/test/ (18:25:49:root@gelk:~)# cd /mnt/test/ (18:25:51:root@gelk:test)# ls lost+found/ (18:25:51:root@gelk:test)# mkdir testdir (18:25:55:root@gelk:test)# touch testfile (18:25:58:root@gelk:test)# echo blah > testfile2 (18:26:06:root@gelk:test)# sync (18:26:08:root@gelk:test)# ls -l total 36 drwx------. 2 root root 16384 2010-07-01 18:25 lost+found/ drwxr-xr-x. 2 root root 4096 2010-07-01 18:25 testdir/ -rw-r--r--. 1 root root 0 2010-07-01 18:25 testfile -rw-r--r--. 1 root root 5 2010-07-01 18:26 testfile2 (18:26:19:root@gelk:test)# cd .. (18:26:21:root@gelk:mnt)# umount /mnt/test (18:26:23:root@gelk:mnt)# Then, plug it into an f13 box.. $ cryptsetup create test /dev/sdd Enter passphrase: $ mount /dev/mapper/test /mnt/test/ [ 997.364633] EXT2-fs (dm-4): error: ext2_check_descriptors: Block bitmap for group 0 not in group (block 3416865761)! [ 997.370967] EXT2-fs (dm-4): group descriptors corrupted
I did a dd if=/dev/mapper/test on f12 and f13 to compare the two. Something is immediately wrong.. -rw-r--r--. 1 davej davej 1028653056 2010-07-01 18:36 f12-decrypted -rw-r--r--. 1 davej davej 199872471 2010-07-01 18:34 f13-decrypted for some reason dm-crypt on f13 thinks it's smaller than it is.
*nod* sorry (heh!) to say this doesn't look like a filesystem problem.
Please use LUKS, not plain crypto mapping (cryptsetup create). Default mode for plain crypt changed because old mode was vulnerable, if you want to use old plain crypt devices in f13 (formatted in older Fedora) you have to specify encryption mode explicitly (either in crypttab or on commandline). Try "cryptsetup create -c aes-cbc-plain -s 256 -h ripemd160 <name> <device>" on F13. and read http://code.google.com/p/cryptsetup/wiki/FrequentlyAskedQuestions#6._Issues_with_Specific_Versions_of_cryptsetup The LUKS hasn't this problem, because it stores mode in metadata on-disk.