Hitachi Dynamic Link Manager Software Users Guide for AIX

• 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
¢
If reservation policy for the device that is managed by HDLM is set to
PR_shared, the Key shown for self Reservation Key might not
match the Key that is actually being used. To check which Key is
actually being used, use the lsattr command.
The following is an example of executing the command to check the
Key for hdiskn.
# lsattr -El hdisk12 | grep PR_key_value
PR_key_value 0xaaaaaaaaaaaaaaaa Reserve Key TRUE
¢
[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, hdisk8, hdisk9,
hdisk10
# /usr/DynamicLinkManager/bin/dlmpr -k hdisk1 hdisk2 hdisk3
hdisk4 hdisk5 hdisk6 hdisk7 hdisk8 hdisk9 hdisk10
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
Utility Reference
7-27
Hitachi Dynamic Link Manager (for AIX) User Guide