Thanks Stefan. Ubuntu will never mount a filesystem with multiple signatures, since it cannot know which is correct and getting it wrong could badly corrupt the filesystem. You'll need to use wipefs to remove the signature that is incorrect.
I'd recommend backing up the device first, you probably only need the first megabyte at most, try: # dd if=/dev/mapper/var of=var.bak bs=1M count=1 Then # wipefs -o 0x438 After that, blkid -p /dev/mapper/var should only return the btrfs data and the drive should be mounted ** Changed in: udev (Ubuntu) Status: Incomplete => Invalid -- does not mount decrypted secondary luks crypttab partitions (btrfs) https://bugs.launchpad.net/bugs/508848 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs