HiCommand Dynamic Link Manager (HDLM) for Windows Systems User's Guide (HIT5201-96001, January 2008)

HiCommand
®
Dynamic Link Manager (HDLM) for Windows
®
Systems User’s Guide 157
4.6.2 Deleting an LU Dynamically
The LU deletion functionality automatically removes an LU from HDLM management when all
the paths to that LU are disconnected.
You can set the LU deletion functionality by specifying the dlnkmgr command's set
operation together with the -rmlu on parameter in the HDLM command. You can also set
this functionality in the Options window of the HDLM GUI. For details on the Options
window, or set operation, see section
3.5.2.
4.6.2.1 Requirements for Deleting the LU Dynamically
An LU is deleted when all the paths to that LU are disconnected. This means that an LU is
deleted when HLU is deleted. When using the dlnkmgr command's set operation to
dynamically delete an LU, depending on the settings the following differences exist:
 When the -rmlu on parameter is specified, the LU is not removed from HDLM
management if the disconnected paths include a path in the Offline(C) status.
 When the -rmlu on -force parameter is specified, the LU is removed from HDLM
management even if the disconnected paths include a path in the Offline(C) status.
4.6.2.2 Confirming Dynamic Deletion
This section explains the two operations for confirming that the LU or path is deleted by
using the LU deletion functionality. One operation is performed when the user intentionally
deletes an LU or path, and the other operation is performed when an LU or path is deleted
because all the paths are disconnected.
Intentional Path Deletion
Use the disk administrator, HDLM command, or HDLM GUI to confirm that LU or path has
been deleted.
Deletion Caused by Path Disconnection
If an LU or path was deleted due to disconnection of a path, HDLM outputs the KAPL05301-E
message to the event log.
Note: When an LU is deleted from the HDLM management target by using the LU deletion
functionality, the KAPL08022-E message might not be output to the event log. In this case,
refer to the KAPL05301-E message to check the path information.
Figure 4.5 shows the example of displaying the KAPL05301-E message.