Comment 11 for bug 1255622

Performed the following steps to generate an issue:
1) Installed devstack with liberty version

2) Created multibackend (with two LVMS)

3) Migrated from lvm1 to lvm2 through retype which was successful.
     cinder retype 45cd3d68-6864-4d9a-a4cc-a9ab452603e0 lvm2

4) Volume occupied by the new driver was the same as the one with which retype was operated.

Hence , marking it as invalid.