HP Hitachi Dynamic Link Manager Software - Manual (Page 308)

4. HDLM Operation
286
4.5 Changing the Configuration of the HDLM Operating Environment
This section describes how to reconfigure the environment for running HDLM.
If you perform any one of the following operations, you will also need to perform the
operations that are described in this section:
• Adding a new LU, or deleting or changing an existing LU
• Adding or deleting a path for an existing LU
• Editing the HDLM driver unconfiguration definition file (
/opt/
DynamicLinkManager/config/dlmfdrv.unconf
) to specify that an LU is
to be managed or is not to be managed by HDLM
• Adding, deleting or replacing hardware (including HBAs, Fibre Channel
switches, and storage systems)
• Changing the HBA mounting slot
• Installing or uninstalling the FCode on an HBA
• Changing the LU default controller for a storage system
• Adding, deleting, or changing a CHA port
• Changing the topology of a storage system
• Changing the Fibre Channel switches settings (including connection ports and
zoning)
• Changing a target ID
• Changing the instance number of the HBA driver by changing the contents of the
/etc/path_to_inst
file
• Switching the kernel mode
4.5.1 Precautions Regarding Changes to the Configuration of an
HDLM Operating Environment
Keep the following in mind when changing the configuration of an HDLM operating
environment.
(1) Changing the Configuration of a System that Uses HDLM
After changing the configuration of a system that uses HDLM, perform these steps:
1.
Delete all unnecessary logical device files in the
/dev/dsk
and
/dev/rdsk
directories.
2. Back up the HDLM driver configuration definition file (
/kernel/drv/