On 03/01/2017 12:23 PM, Phil Turmel wrote: > I strongly disagree. This procedure, as shown, is an admin cock-up: > >> mdadm --build /dev/mdbackup --device-count 2 /dev/md/home missing >> ... hotplug sd-big ... >> madam /dev/mdbackup --add /dev/sd-big >> ... wait for sync to finish ... >> mdadm --stop mdbackup >> ... unplug sd-big ... One more point. The above is functionally identical in every respect to just: # dd if=/dev/md/home of=/dev/sd-big bs=1M Why are you bothering to --build an array? Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html