Red Hat GNBD WITH GLOBAL FILE SYSTEM IN RHEL 4.5 Guia de Instalação descarregar pdf (Página 16)

Chapter 2. Multipath Devices

If you want the system-defined user-friendly names to be consistent across all nodes in the cluster,

however, you can follow this procedure:

1. Set up all of the multipath devices on one machine.

2. Disable all of your multipath devices on your other machines by running the following commands:

# service multipathd stop

# multipath -F

3. Copy the bindings file from the first machine to all the other machines in the cluster. By default,

the location of this file is /var/lib/multipath/bindings. If /var is a separate partition

on your system, however, you should change this value with the bindings_file option in

the defaults section of the multipath.conf configuration file, as described in Section 4.3,

“Configuration File Defaults”. This file needs to be located on your root file system partition, for

example:

bindings_file "/etc/multipath_bindings"

4. Re-enable the multipathd daemon on all the other machines in the cluster by running the

following command:

# service mutipathd start

If you add a new device, you will need to repeat this process.

Similarly, if you configure an alias for a device that you would like to be consistent across the nodes in

the cluster, you should ensure that the /etc/multipath.conf file is the same for each node in the

cluster by following the same procedure:

1. Configure the aliases for the multipath devices in the in the multipath.conf file on one

machine.

2. Disable all of your multipath devices on your other machines by running the following commands:

# service multipathd stop

# multipath -F

3. Copy the /etc/multipath.conf file from the first machine to all the other machines in the

cluster.

4. Re-enable the multipathd daemon on all the other machines in the cluster by running the

following command:

# service mutipathd start

When you add a new device you will need to repeat this process.

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