How can I boot a server from a replicated SAN LUN using device-mapper-multipath in Red Hat Enterprise Linux 5?

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Some storage vendors provide replication functionality which allows cloning a LUN from one SAN to another for purposes of disaster recovery (DR) or to allow testing in a non-production environment.  Booting of a replicated Red Hat Enterprise Linux system that is configured to use device-mapper-multipath I/O (DM-MPIO) for the LUN containing the root filesystem typically fa...

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