Would like to have the option to zero the superblock of an incoming drive and have it treated as a virgin replacement. I tried this (I think) by running mdadm --add /dev/md2 /dev/sde It worked, but assigned the new drive as device number [2], which seems incorrect. I tried failing/removing the drive followed by a mdadm --remove /dev/md2 detached and repeated the --add with a zero-superblock drive but it does the same thing every time. Only way to get it to reuse drive slot 1 was to do a mdadm --grow --raid-devices=1 --force /dev/md2 followed by a mdadm --grow --add --raid-devices=2 /dev/md2 /dev/sde Is this the expected behavior? I find it confusing and probably don't understand it properly. Kernel is 3.1.8. -- 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