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

282 Chapter 8 Utility Reference
8.3.2.1 Clearing the Persistent Reservation in an MSCS Environment
To clear the persistent reservation in an environment in which MSCS is used:
1. Start a host from the hosts that make up the MSCS system.
2. Choose Start, Settings, Control Panel, double-click Administrative Tool, and then
double click Computer Management. The Computer Management window is displayed.
3. 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.
4. 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.
5. Execute dlmpr -d. The following shows what happens when this utility is executed.
The persistent reservation remains when the 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.
6. 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.