http://blog.nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/selfhosting/raid1disks/index.html
root@megapede ~ # mount /dev/md3
root@megapede ~ # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 1.8T 0 disk
└─md3 9:3 0 1.8T 0 raid1 /mnt/md3
sdb 8:16 0 1.8T 0 disk
└─md3 9:3 0 1.8T 0 raid1 /mnt/md3
[...] and we successfully mounted it thanks to having it in /etc/fstab. Create a raid 1 with 1 disk, and then add another: I have a usecase where i already have data on a disk, and i want to mirror it without...