HP Data Protector--Device is already locked by someone else (and no sessions running)

因為磁帶機故障送修，回來後接上機器，但是在HP Data Protector卻沒有辦法使用原來的Drivers，

只好將它刪除，重建Drivers，但是在掃描磁帶時卻出現下列錯誤的訊息，以致無法操作：

Device is already locked by someone else (and no sessions running)

查lock的訊息

hp7420:/opt/omni/sbin>./omnidbutil -show_locked_devs

Locked devices/media/cartridges:

================================

Type:     Device

Name/Id:  HP:Ultrium 1-SCSI:HU74B00251

Pid:      7358

Host:     hp7420

解開lock，會詢問是否確定要unlock，輸入y

hp7420:/opt/omni/sbin>./omnidbutil -free_locked_devs

Are you sure you want to unlock ALL locked devices/media/cartridges (y/n)? y

DONE!

重新查詢後就看不到被lock了

hp7420:/opt/omni/sbin>./omnidbutil -show_locked_devs

Locked devices/media/cartridges:

================================

No locked devices/media/cartridges found!

最後再重建Drivers，這次掃描就成功了。