This is a two part question. 1) Can you reshape raid 5 to 6 with mdadm on linux (fairly sure you can, but cant get mdadm to accept it) 2) Can you do 1) while also growing the array in one go ?
Before, I had four 1TB drives on a RAID array. I added two more 1TB drives to the array, let it do its rebuild and it is not showing the size increase when I mount it. jacks@Gen2:~$ df -h ...