I recently upgraded my laptop to the latest Ubuntu 8. The upgrade process was easy and quick however after the reboot I was unable to access my home-directory. I have a separate partition on which /home is mounted. This partition is encrypted with cryptsetup.
When I start the cryptdisk daemon it returns an error:
* Starting remaining cryptodisks...
mount: special device /dev/mapper/cryptohome does not exist
Checking the status with cryptdisk doesn’t show any errors:
/dev/mapper/cryptohome is active:
keysize: 256 bits
offset: 0 sectors
size: 40949685 sectors
And the device is there:
ls -l /dev/mapper/
crw-rw---- 1 root root 10, 63 2008-07-12 17:20 control
brw-rw---- 1 root disk 254, 0 2008-07-12 17:47 cryptohome
Crypttab is also configured correctly:
Mounting the /home partition on /dev/mapper/cryptohome (as root) returns :
mount: wrong fs type, bad option, bad superblock on /dev/mapper/cryptohome,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
with these errors in dmesg
[ 1966.915329] VFS: Can't find ext3 filesystem on dev dm-0
Creating new encrypted partitions (with similar settings) works like a charm. The partition worked perfectly for months before the upgrade and currently I don’t have any clue on how to access my encrypted data. Any help would be highly appreciated.