Enabling multipathing for Linux hosts

This section provides instructions for enabling multipathing for Linux® hosts.

After the iSCSI devices are discovered, you can enable multipathing.

To enable multipathing for a Linux host, perform the following steps:

Issue the service multipathd stop command if the daemon is already running.
Open the /etc/multipath.conf file.
Go to the device section and add the following entry to the file:
```
device {
        vendor          "IBM"
	       product         "2145"
        path_grouping_policy  group_by_prio
        prio_callout      "/sbin/mpath_prio_alua/dev/%n"

}
```
Note: If you are using SUSE Linux Enterprise Server 10 Service Pack 2, use prio "alua" instead of prio_callout "/sbin/mpath_prio_alua/dev/%n" to disable the Using deprecated prio_callout message. The prio "alua" value disables only the error message and does not affect the operations.
Save the file.
Issue the service multipathd start command to start the daemon.
Note: If you have discovered a new iSCSI disk, repeat all steps.