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5.2. Moving root File Systems from a Single Path Device to a Multipath Device‌

This is dramatically simplified by the use of UUIDs to identify devices as an intrinsic label. Simply install multipath-tools-boot and reboot. This will rebuild the initial ramdisk and afford multipath the opportunity to build it's paths before the root file system is mounted by UUID.


Whenever multipath.conf is updated, so should the initrd by executing update-initramfs -u -k all. The reason being is multipath.conf is copied to the ramdisk and is integral to determining the available devices for grouping via it's blacklist and device sections.

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