HP Hitachi Dynamic Link Manager Software User Manual
Page 312
4. HDLM Operation
290
Environment.
2.
Change the path configuration.
3.
Return to the HDLM boot disk environment, following the procedure described
in 3.6 Configuring a Boot Disk Environment.
(5) 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.
4.5.2 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.
(1) 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.