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3.3. Configuring Storage Devices

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By default, DM Multipath includes support for the most common storage arrays that themselves support DM Multipath. For information on the default configuration value, including supported devices, run either of the following commands.
# multipathd show config
# multipath -t 
If you need to add a storage device that is not supported by default as a known multipath device, edit the /etc/multipath.conf file and insert the appropriate device information.
For example, to add information about the HP Open-V series the entry looks like this. This example sets the device to queue for a minute (or 12 retries and 5 seconds per retry) after all paths have failed.
devices {
        device {
                vendor "HP"
                product "OPEN-V"
                no_path_retry 12
        }
}
For more information on the devices section of the configuration file, see Section 4.5, “Configuration File Devices”.
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