Dynamic Reconfiguration (Dr) For Solaris; Overview Of Reconfiguring The Hdlm Device; Reconfiguring The Hdlm Device - Hitachi XP P9500 User Manual

1 Migrate to the local boot disk environment, following the procedure
.
described in
Disk Environment on page
2 Change the path configuration.
.
3 Return to the HDLM boot disk environment, following the procedure
.
described in

Dynamic Reconfiguration (DR) for Solaris

You cannot use the Solaris dynamic reconfiguration (DR) function on HBAs
that exist on a path managed by HDLM. To add, delete, or replace such HBAs,
you need to perform a reconfiguration reboot of the host.

Overview of Reconfiguring the HDLM Device

Whether or not the host must be restarted after the reconfiguration depends
on the contents of the reconfiguration. This section describes the
reconfigurations that does and does not require the restarting of the host. It
also gives notes for reconfiguration.

Reconfiguring the HDLM Device

You can change the HDLM device configuration in one of the following two
ways:
• Restart the host, with the reconfiguration option specified.
Execute the dlmsetconf utility for creating the HDLM driver configuration
definition file to update the HDLM driver configuration definition file (/
kernel/drv/dlmfdrv.conf), and then restart the host, with the
reconfiguration option specified.
• Use the dlmcfgmgr utility for managing the HDLM configuration, without
restarting the host.
Execute the dlmsetconf utility to update the HDLM driver configuration
definition file (/kernel/drv/dlmfdrv.conf), and then execute the
dlmcfgmgr utility.
Modifying the configuration of the HDLM device without restarting the host
while HDLM is running is called a dynamic reconfiguration of the HDLM
device.
Dynamic reconfiguration of the HDLM device is applicable to the following
operations:
• Adding a new logical unit (LU)
A new LU is one that has been added to the host, and recognized by the
HDLM driver for the first time. When a new LU is added, the path
connected to that LU is also added.
• Deleting an existing LU
In Solaris 10, if an LU that is managed by HDLM is deleted, it is also
removed from HDLM management.
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Migrating from a Boot Disk Environment to the Local Boot
Configuring a Boot Disk Environment on page
HDLM Operation
Hitachi Dynamic Link Manager User Guide (for Solaris(R))
3-96.
3-76.