- -f
Specify this parameter to change the name of an HDLM device that is being used.
You must restart the host after the command is completed.
- -o
Specify this parameter to output the correspondence between the current iLUs and HDLM device names to the device name replacement definition file (/etc/opt/DynamicLinkManager/dlmchname.conf).
The device name definition file is backed up for three generations (including the current device name definition file).
Important
If you execute the dlmchname utility without specifying any parameters, initial values (0) are set for all statistics (number of I/Os and number of I/O errors) managed by HDLM.
If the -f parameter is not specified, the name of an HDLM device that is being used cannot be changed.
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.