Device mapper device should use UUID string if possible.
UDEV can then easily distinguish the device type etc.
cryptsetup now uses CRYPT prefix for uuid.
git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@55 36d66b0a-2a48-0410-832c-cd162a569da5
(And remove misleading error message later.)
Because kernel and libdevmapper does not provide
better error message then "invalid parameters"
add some error hint if dm-crypt mapping failed.
(Key size and kernel version check for XTS and LRW mode
for now.)
git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@52 36d66b0a-2a48-0410-832c-cd162a569da5
