Hitachi Dynamic Link Manager Software Users Guide for AIX (6.6) (T5208-96010, April 2011)

3. Creating an HDLM Environment
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When using HDLM in a cluster configuration, make sure to perform the operations
described in the following sub-sections on all hosts that comprise the cluster.
(1) Stop Applications
HDLM manager stops during an upgrade installation or re-installation, so stop any
applications that require HDLM manager operations before you start the upgrade
installation or re-installation.
(2) Perform Operations for HDLM Management-Target Device
1. Terminate the processes of all applications that are accessing the HDLM
management-target devices.
2. If necessary, back up all HDLM management-target devices to a medium such as
tape.
3. Unmount the disks.
If the HDLM management-target devices are mounted, unmount them as follows:
• First, execute the command below to check the current settings.
# mount -p
The current settings will be output as shown in Figure 3-3: Example of
Results from Executing the Mount -p Command (Preparations for an
Upgrade Installation or Re-installation of HDLM).
Figure 3-3: Example of Results from Executing the Mount -p Command
(Preparations for an Upgrade Installation or Re-installation of HDLM)
This example uses HDLM to manage the devices that are shaded in
Figure 3-3: Example of Results from Executing the Mount -p Command
(Preparations for an Upgrade Installation or Re-installation of HDLM).
• Execute the following command to unmount the disk.
# umount /mntpt
4. Execute the following command to inactivate the applicable volume group: