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VCS Application Note: Sun Enterprise 10000 Dynamic Reconfiguration
Dynamic reconfiguration in VCS environment
Dynamic Multipathing (DMP) enabled. Dynamic Reconfiguration of I/O boards
depends on DMP being configured for the storage.
In the example, the system board SB3, which has a disk controller, is to be
removed, repaired, and replaced. The administrator disables the controller, and
the disk controller on SB1 automatically takes over because of the DMP
functionality. Using DR commands, the administrator can detach, or remove the
board from the Domain A’s configuration. When this is complete, the board can
be physically removed.
Replacing the board—a controller board in this case—involves physically
installing it and reconnecting it to the shared storage. Reconfiguring the board
requires using DR commands to “attach” it to the domain, after which the
controller can be re-enabled.
Detaching I/O system boards with DMP enabled
Make sure the
kernel_cage_enable
variable is set.
1
Freeze the VCS service groups running on the domain where you intend to
perform DR operations. Freezing the service groups prevents them from
being taken offline or failed over. Repeat the following command for each
service group:
#
hagrp -freeze
ser_grp_name
2
Connect to the SSP server and log in to the domain whose system board
requires Dynamic Reconfiguration (DR).
ssp:D1%
echo $SUNW_HOSTNAME
3
Enter the
dr
(1M) shell:
ssp:D1%
dr
Summary of Contents for Veritas Solaris
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