How to Setup Linux to Boot from A Cloned LUN with Multipath to SAN (Doc ID 822988.1)

Last updated on MAY 05, 2020

Applies to:

Goal

The scenario is: You have a server booting from a multipathed LUN and the server works fine. You cloned the LUN into a new one, and presented it to the same server to replace the original one. When starting up the server, you got kernel panic on the screen:

This issue was because the ramdisk/initrd still use the old LUN's SCSI ID to create the multipath pseudo device on new LUN, therefor root filesystem can not be mounted.
This note illustrate the procedure to fix this problem.

Solution

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