Ubuntu
gnome-disk-utility package

  1. Lucid (10.04)
  2. Bug #484429
  3. Comment #52

Comment 52 for bug 484429

Revision history for this message
In , Saikat (saikat-redhat-bugs) wrote :

Steps to reproduce:
1) Insert a USB stick with an encrypted partition
3) Pull out the USB stick
4) Intert the USB stick again

Result:
GNOME displays a dialog for the password. Once submitted, the following error comes up:
Error unlocking device: cryptsetup exited with exit code 239: Command failed: Device already exists

This is due to the mapping being Opened when the stick is first inserted, but never closed, which creates a conflict.

Workaround:
Do the following to resolve the conflict of the existing device in /dev/mapper.
$ ls -al /dev/mapper
(Identify the mount point for your drive, "sudo blkid" may help)
$ sudo cryptsetup luksClose devkit-disks-luks-uuid-<uuid>-uid1000

What is expected:
Someone (e.g. cryptsetup) should "cryptsetup luksClose" when it detects an old mapped device can no longer be accessed (perhaps in response to the same device being plugged in again).