Comment 17 for bug 1526984

Hum, that's kind of weird. You should see disks being picked up by multipath if they should, even if they are detected *after* multipath scripts run (because multipathd...). They wouldn't be detected before multipath runs, because then they would most likely be remapped anyway (unless something else claims them).

Could you file a new bug for this, including the output of multipath -v4 taken from the initramfs? You may stop the boot process by adding "break=pre-multipath" to break boot just before the multipath scripts. At that point, you'll need to modprobe dm_multipath; and then you should be able to run multipath -v4. If you exit from there boot should complete (hopefully succesfully, since there will have been some extra delay).