Hitachi Dynamic Link Manager Software Users Guide for Linux

Canceling the Settings for RHCM

This section describes how to cancel the HDLM device settings in RHCM in an

environment where RHCM is used. If the environment is one where an HDLM

device is already being used in RHCM, the following procedure must be

executed in order to change to an environment that uses a character-type

device of a SCSI device.

Note:

For Oracle Unbreakable Enterprise Kernel 5, RHCM environments are not

supported.

When Using Red Hat Enterprise Linux AS4/ES4

To cancel the settings for RHCM:

1. Stop the cluster service of RHCM.

If the RHCM service is running, stop the service by executing the

following command:

# service rgmanager stop

# service cman stop

# service ccsd stop

2. Replace the HDLM device used by RHCM with a SCSI device.

Edit as shown below to use the SCSI device /dev/sda, which is the lower

SCSI device of the HDLM device/dev/sddlmaa, as /dev/raw/raw1.

# /dev/raw/raw1 /dev/sddlmaa

/dev/raw/raw1 /dev/sda

Comment out /dev/sddlmaa and add /dev/sda.

3. Restart the rawdevices service to apply the changes made in Step 2.

Execute the following command to restart the service:

# service rawdevices restart

4. Start the cluster service of RHCM.

Executing the following command to start the service:

# service ccsd start

# service cman start

# service rgmanager start

When Using Red Hat Enterprise Linux 5 or When Using Red Hat Enterprise Linux

To cancel the settings for RHCM:

1. Stop the cluster service of RHCM.

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Creating an HDLM Environment

Hitachi Dynamic Link Manager (for Linux®) User Guide