On Tue, Apr 30, 2019 at 10:25:24AM +0200, Julien ROBIN wrote: > I'm about to play the following command : > > mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/sdd1 /dev/sde1 > /dev/sdb1 --assume-clean > > Is it fine ? If you must re-create - use overlays - see https://unix.stackexchange.com/a/131927/30851 Regards Andreas Klauer