HP Hitachi Dynamic Link Manager Software - Manual (Page 316)

3. Creating an HDLM Environment
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Migrate to the SCSI devices from an environment where HDLM devices use
LUKS.
For details on how to cancel the LUKS settings, see 3.23.10 Canceling the LUKS
Settings.
3.23.2 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
3.23.3 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