HP Hitachi Dynamic Link Manager Software - Manual (Page 492)

• For disks, such as system disks, that cannot be placed in offline during
system operation, execute the HDLM device name replacement utility with
the -f parameter specified, and then restart the host to change the
name.
If an HDLM device name is changed with the -f parameter specified, the
following restrictions are applied until the host restarts:
¢
An error occurs if the dlmcfgmgr utility is executed.
¢
The HDLM device name before the change is used in I/Os.
• When changing the name of an HDLM device that is a member of an LVM
volume group, execute the dlmchname utility, and then the vgscan
command.
• You cannot execute the dlmchname utility on HDLM devices that are not
configured.
Editing the Device Name Replacement Definition File
This subsection explains how to edit the device name replacement definition
file (/etc/opt/DynamicLinkManager/dlmchname.conf).
How to Edit the Device Name Replacement Definition File
Keep the following in mind when you edit the device name replacement
definition file:
• Specify a storage system serial number, an iLU, and an HDLM device
name on one line, separating each one with a space.
• To enter a comment line, specify a hash mark (#) at the beginning of the
line.
Items to Be Defined in the Device Name Replacement Definition File
In the device name replacement definition file, the correspondence among
storage system serial numbers, iLUs, and HDLM device names is defined.
Execute the dlmchname utility with the -o parameter to create a device name
replacement definition file (/etc/opt/DynamicLinkManager/
dlmchname.conf). An example of executing the command is as follows:
3585011299 0090 sddlmac
3585011299 0091 sddlmab
3585011299 0092 sddlmaa
To change an HDLM device name, edit only the third field, which indicates the
HDLM device name.
For details about the characters that can be used for HDLM device names, see
Logical Device Files for HDLM Devices on page 2-11 .
#
When several digits are output before storage system serial numbers,
ignore them.
7-32
Utility Reference
Hitachi Dynamic Link Manager User Guide for Linux ®