Hi mdadm raid gurus, I wanted to make a raid1 array, but at the moment I have only 1 drive available. The other disk is in the mail. I wanted to make a raid1 that i will use as a backup. But I need to do the backup now, before the second drive comes. So I did this. formated /dev/sda creating /dev/sda1 with type fd. then I tried to run mdadm -C /dev/md0 --level=1 --raid-devices=1 /dev/sda1 but I got an error message mdadm: 1 is an unusual numner of drives for an array so it is probably a mistake. If you really mean it you will need to specify --force before setting the number of drives so then i tried mdadm -C /dev/md0 --level=1 --force --raid-devices=1 /dev/sda1 mdadm: /dev/sda1 is too small:0K mdadm: create aborted now what does that mean? fdisk -l /dev/sda shows device boot start end blocks Id System /dev/sda1 1 60801 488384001 fd linux raid autodetect so what do I do? I need to back up my data. If I simply format /dev/sda1 as an ext3 file system then I can't "add" the second drive later on. How can I set it up as a `degraded` raid1 array so I can later on add in the second drive and sync? Thanks for your help! Mitchell - 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
