Hitachi Dynamic Link Manager Software Users Guide for Linux

For details on how to cancel the LUKS settings, see Canceling the LUKS
Settings on page 3-223.
Canceling the Heartbeat Settings
If Heartbeat is being used with SUSE LINUX Enterprise Server, the HDLM
device settings must be cancelled from Heartbeat.
The following is the procedure for migrating an environment in which HDLM
devices have already been used for Heartbeat to an environment that uses
character-type SCSI devices.
1. Stop the Heartbeat service in the cluster.
If the Heartbeat service is running, stop it by executing the following
command:
# etc/init.d/heartbeat stop
2. Migrate the SCSI devices used by Heartbeat to HDLM devices.
If a SCSI device that is subordinate to an HDLM device is being used as a
file system resource, edit the settings as shown in the following example:
# host1 172.26.4.321 Filesystem::/dev/sddlmaa::/mnt/point::ext3
host1 172.26.4.321 Filesystem::/dev/sda::/mnt/point::ext3
In this example, the HDLM device /dev/sddlmaa is commented out, and
the SCSI device /dev/sda is added.
3. Start the Heartbeat service in the cluster.
Execute the following command to start the Heartbeat service:
# /etc/init.d/heartbeat start
Canceling the Settings for Oracle RAC
This section describes how to cancel the values set for HDLM in an
environment where Oracle RAC is used.
• When using release 10.1.0.3.0 or later of Oracle RAC 10g, the value set in
the MISSCOUNT parameter, for which the threshold of the I/O timeout of
the voting disk is set, must be returned to the value that was set before
HDLM was installed. For details on how to set the value of the MISSCOUNT
parameter, contact the company with which you have a support service
contract for Oracle.
• When using release 10.2.0.2.0 or later of Oracle RAC 10g, the value set in
the DISKTIMEOUT parameter, must be returned to the value that was set
before HDLM was installed. For details on how to set the value of the
DISKTIMEOUT parameter, contact the company with which you have a
support service contract for Oracle.
Creating an HDLM Environment
3-207
Hitachi Dynamic Link Manager (for Linux®) User Guide