Comment # 7 on bug 1043043 from zhen ren

On sle12 sp3 beta3, it acts as follows:
# lvcreate --type cache-pool -L10 testvg/cpool
  Rounding up size to full physical extent 12.00 MiB
  Logical volume "cpool" created.
# lvcreate --type cache -l 1 --cachepool testvg/cpool -n corigin testvg
  Logical volume "corigin" created.

lvremove -f testvg
  Logical volume "cpool" successfully removed
  Logical volume "corigin" successfully removed
# lvcreate --type cache-pool -L10 testvg/cpool
  Rounding up size to full physical extent 12.00 MiB
  Logical volume "cpool" created.
# lvcreate --type cache -l 1 --cachepool testvg/cpool -n corigin testvg
--cachesettings migration_threshhold=233
  device-mapper: reload ioctl on (254:6) failed: Invalid argument
  Failed to lock logical volume testvg/corigin.
  Aborting. Manual intervention required.