I am trying to create a 4 drive raid 6 with mdadm in Ubuntu. The command I am using is
sudo mdadm --create /dev/md0 --level=6 --raid-devices=4 /dev/sdb /dev/sdc /dev/sdd /dev/sde
the error I am receiving in return is
mdadm: An option must be given to set the mode before a second device (/dev/md0) is listed
I really couldn't find much that helped me when searching google, I found one thing that suggested it had something to do with the automated email. I thought that was unnecessary so I tried to skip. Is there a way I can go back now and set that up if that's causing problems?