HP Hitachi Dynamic Link Manager Software User Manual

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4. HDLM Operation

293

• If the major and minor numbers of the sd or ssd device of an LU to be newly added

to HDLM matches the major or minor number of an sd or ssd device previously

registered in HDLM, dynamic reconfiguration cannot be performed. You must

restart the host.

• Dynamic reconfiguration cannot be performed when using VxVM, because the

host must be restarted in order to use (in VxVM) an LU that has been newly added

to HDLM.

• After you execute the

dlmcfgmgr

utility to add a new LU, when you execute the

path status display command (the

view -path

operation), the HDevName of the

added LU may be displayed as a hyphen (

(2) Adding a New LU (When Not Using Sun Cluster)

To add a new LU:
1.

Set up the storage system and switch so that Solaris recognizes the LU.
Specify the following settings to have Solaris recognize the newly added LU:

• Storage system settings (to map the internal LU to the storage port LUN)
• Connection between the storage port and the host HBA port
• Fibre Channel switch settings
• Settings for the host HBA, and for the sd or ssd driver

For details on how to perform these settings, refer to the documentation for the

HBA being used. You may need to restart the host, depending on the HBA being

used, its drivers, and the path configuration of the newly added LU.

Check the newly recognized LU.
You can check the LU by using the

format

command. Figure 4-1: Example of

executing the format command shows an example of executing the

format

command. The shaded portion represents the newly recognized LU.