HP Hitachi Dynamic Link Manager Software - Manual (Page 496)

Example
To check the reservation keys, and then clear a reservation key:
1
.
Execute the dlmpr utility to display the reservation keys for sda, sdb,
sdc, sdd, sde, and sdf.
# /opt/DynamicLinkManager/bin/dlmpr -k sda sdb sdc sdd sde sdf
sda Reservation Key : [0xaaaaaaaaaaaaaaaa]
Regist Key : [0xaaaaaaaaaaaaaaaa], Key Count : 1
sdb Reservation Key : [0xbbbbbbbbbbbbbbbb]
Regist Key : [0xaaaaaaaaaaaaaaaa], Key Count : 2
Regist Key : [0xbbbbbbbbbbbbbbbb], Key Count : 2
sdc Reservation Key : [0xbbbbbbbbbbbbbbbb]
Regist Key : [0xbbbbbbbbbbbbbbbb], Key Count : 4
sdd Reservation Key : [0xaaaaaaaaaaaaaaaa]
Regist Key : [0xaaaaaaaaaaaaaaaa], Key Count : 4
sde Reservation Key : [0x0000000000000000]
sdf Reservation Key : [0x0000000000000000]
Regist Key : [0xaaaaaaaaaaaaaaaa], Key Count : 1
Regist Key : [0xbbbbbbbbbbbbbbbb], Key Count : 1
2
.
Execute the dlmpr utility to clear the reservation key.
# /opt/DynamicLinkManager/bin/dlmpr -c sdb sdc
3
.
The confirmation message appears. Enter y to clear. Otherwise, enter n.
KAPL10641-I Reservation Key will now be cleared. Is this OK?
[y/n]:y
KAPL10642-I Reservation Key of sdb was cleared.
KAPL10642-I Reservation Key of sdc was cleared.
Note
• Before executing the dlmpr utility, make sure that the LU for which
persistent reservation will be cleared is not being accessed.
If you perform the following operation while both of the following
conditions exist, an error occurs when reservation-key is read, and
0x???????????????? is displayed.
Conditions
- Multiple paths are configured to the HDLM device.
- A persistent reservation has been set by the cluster software.
Operation
1. Clear persistent reservation, specifying the SCSI device.
2. Execute the dlmpr utility with the -k parameter specified to display
the PersistentReserve information for a SCSI device associated with a
different path.
If the above display error occurs, re-execute the dlmpr utility with the -k
parameter specified.
7-36
Utility Reference
Hitachi Dynamic Link Manager User Guide for Linux ®