Hitachi XP P9500 User Manual page 287

Specify this parameter to clear the Reservation Key.
Note
• Do not use the -c parameter during normal operation. Once the
Reservation Key is cleared, the hdisk can be accessed from other
hosts, which may lead to data corruption.
Use the -c parameter only when you need to clear a Reservation
Key that was improperly retained.
• When the hdisk-name parameter is omitted, the Reservation Key
for the hdisks that makes up rootvg will not be cleared. In this
case, the KAPL10670-I message is displayed in the execution
result.
hdisk-name
Specify the hdisk for which you want to display or clear the Reservation
Key. You can specify more than one volume.
If you omit this parameter, the utility assumes all hdisks.
-a
When multiple hdisks are specified, even if an error occurs during
processing, the processing continues for all hdisks.
-h
Displays the format of the dlmpr utility.
Note
[0x????????????????] appears for Reservation Key if the destination
storage system does not support the persistent reservation or if a
hardware error occurs.
Example
To check the Reservation Keys, and then clear the Reservation Keys other
than those for the local host:
1 Execute the dlmpr utility to display the Reservation Keys for hdisk1,
.
hdisk2, hdisk3, hdisk4, hdisk5, hdisk6, hdisk7
# /usr/DynamicLinkManager/bin/dlmpr –k hdisk1 hdisk2 hdisk3
hdisk4 hdisk5 hdisk6 hdisk7
self Reservation Key : [0xaaaaaaaaaaaaaaaa]
hdisk1 Reservation Key : [0x????????????????] ,
reserve_policy : PR_exclusive
hdisk2 Reservation Key : [0x0000000000000000] ,
reserve_policy : no_reserve
hdisk3 Reservation Key : [0xaaaaaaaaaaaaaaaa] ,
reserve_policy : PR_exclusive
Regist Key : [0xaaaaaaaaaaaaaaaa] , Key Count : 4
Regist Key : [0xcccccccccccccccc] , Key Count : 4
hdisk4 Reservation Key : [0xbbbbbbbbbbbbbbbb]*,
reserve_policy : PR_exclusive
Regist Key : [0xaaaaaaaaaaaaaaaa] , Key Count : 4
Regist Key : [0xbbbbbbbbbbbbbbbb] , Key Count : 4
Hitachi Dynamic Link Manager User Guide (for AIX(R))
Utility Reference
7-23