Automatically Performing Hdisk Reconfiguration - Hitachi XP P9500 User Manual

To change attribute values for an individual hdisk, use the chdev
command instead of the dlmchpdattr utility to change the values actually
used. The following explains how to use the dlmchpdattr utility to change
default hdisk values, and apply them as the actually used values.
If you execute the dlmchpdattr utility with the -A parameter specified, after
the default values are changed, hdisks will be automatically reconfigured.
Note that even though you can execute the utility without specifying the -A
parameter to change the default value, you have to manually reconfigure the
hdisks.
To automatically reconfigure hdisks, perform the procedure in
Performing hdisk Reconfiguration on page
hdisks, perform the procedure in
on page
For details on the dlmchpdattr utility, see
HDLM Default Settings on page

Automatically Performing hdisk Reconfiguration

To automatically reconfigure an hdisk:
1 Log in to AIX as a user with root permissions.
.
2 Execute the dlmchpdattr utility with the -A parameter specified.
.
# /usr/DynamicLinkManager/bin/dlmchpdattr -A -a
reserve_policy=no_reserve
A message is displayed to confirm whether processing should continue.
Enter y to continue processing.
If the command terminates normally, the KAPL10571-I message is
displayed.
3 Make sure that the default value for the hdisk reservation policy has
.
changed.
Execute the dlmchpdattr utility with the -o parameter specified.
# /usr/DynamicLinkManager/bin/dlmchpdattr -o
uniquetype = disk/fcp/Hitachi
KAPL10571-I The dlmchpdattr utility completed successfully.
If the execution environment is a boot disk environment, proceed to step
4. If the execution environment is a local boot disk environment, proceed
to step 5.
4 Execute the following command to restart the host.
.
# shutdown -Fr
5 Execute the following command to make sure that the status of the
.
hdisks recognized as HDLM-managed devices is Available.
# lsdev -Cc disk
hdisk0
4-18.
reserve_policy
Available 1S-08-00-8,0
HDLM Operation
Hitachi Dynamic Link Manager User Guide (for AIX(R))
4-17. To manually reconfigure
Manually Performing hdisk Reconfiguration
dlmchpdattr Utility for Changing
7-11.
: no_reserve
16 Bit LVD SCSI Disk Drive
Automatically
4-17