HiCommand Dynamic Link Manager User's Guide (for Windows(R))

8.3.2 Parameters

-c

Displays a list of the paths for LUs managed by HDLM and persistent reservation information. When you specify the path ID, the persistent reservation for the path is cleared.

-d

Displays a list of the paths for LUs managed by HDLM and persistent reservation information.

-h

Displays the help of this utility.

None

Displays an overview of this utility.

Clearing the Persistent Reservation

Organization of this subsection

(1) Environment in which MSCS is used:

(2) Environments in which VCS is used:

(1) Environment in which MSCS is used:

Start a host from the hosts that make up the MSCS system.

Choose Start, Settings, Control Panel, double-click Administrative Tool, and then double click Computer Management.
The Computer Management window is displayed.

Choose Services and Applications and then double-click Services. A list of services is displayed. From the list, choose Cluster Service, right-click it and choose Properties. In the General tab, select Disabled from the Startup type combo box and then click the OK button.

In the Computer Management window, choose Device Manager. From the View menu, select Show hidden devices. Choose Cluster Disk Driver from Non-Plug and Play Drivers in the right window, right-click it, and then choose Disabled. The message Disabling this device will cause it to stop functioning. Do you really want to disable it? is displayed: choose Yes.
The message prompting you to restart the system is displayed again, choose Yes. The system restarts and the Cluster Disk Driver becomes disabled.
Execute dlmpr -d.
The following shows what happens when this utility is executed. The persistent reservation remains when KeyCount is not 0.
>dlmpr.exe -d
PathID PathName                           KeyCount
ReservedKey       Type
000000 0001.0000.0000000000000000.0000     1    200000E08B1059EC ExclusiveAccessRegistrantOnly
000001 0001.0000.0000000000000000.0001     1    200000E08B1059EC ExclusiveAccessRegistrantOnly
KAPL10640-I The dlmpr utility completed normally.
Execute dlmpr -c.
From the displayed list, enter the path ID where KeyCount is not 0. The confirmation message is displayed twice. Check the message and enter y. The persistent reservation is cleared. Repeat the procedure until KeyCount for all paths is changed to 0. The following shows what happens in executing this utility.
>dlmpr.exe -c
PathID PathName                           KeyCount
ReservedKey       Type
000000 0001.0000.0000000000000000.0000     1    200000E08B1059EC ExclusiveAccessRegistrantOnly
000001 0001.0000.0000000000000000.0001     1    200000E08B1059EC ExclusiveAccessRegistrantOnly
KAPL10655-I Specify the PathID of the LU for which you want to clear persistent reservation information. (To cancel, press the x key):0
KAPL10656-I The persistent reservation information of PathID = 0 will be cleared. Is this OK? [y/n]:y
KAPL10657-I If you continue this process, the reservation of the LU you specified will be cleared. Please confirm that no other servers are accessing this LU.
[y/n]:y
KAPL10658-I The persistent reservation information of PathID = 0 was cleared.
KAPL10640-I The dlmpr utility completed normally.
Choose Start, Settings, Control Panel, double-click Administrative Tool, and then double-click Computer Management.
The Computer Management window is displayed.

Choose Services and Applications and then double-click Services. A list of services is displayed. From the list, right-click Cluster Service, and then choose Properties. Select Automatic from the Startup type combo box in the General tab, and then click OK button.

In the Computer Management window, choose Device Manager. From the View menu, select Show hidden devices. Choose Cluster Disk Driver from Non-Plug and Play Drivers on the right window, right-click it, and choose Enabled.
The message prompting you to restart the system is displayed again. Choose Yes. The system restarts and the Cluster Disk Driver becomes enabled.

Make sure that MSCS starts correctly.

Start another host from the hosts that make up the MSCS system.

(2) Environments in which VCS is used:

Start one host from the hosts that make up the VCS system.

Stop the VCS.

Execute dlmpr -d.

Execute dlmpr -c.

From the displayed list, enter the path ID where KeyCount is not 0. The confirmation message is displayed twice. Check the message and enter y. The persistent reservation is cleared. Repeat the procedure until KeyCount for all paths is changed to 0.

Restart the VCS.

Restart the VCS, or start another host from the hosts that make up the VCS system.

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