Following your instructions, i upgraded to mdadm, but this command looks not to work
mdadm --grow /dev/md0 --level=6 --raid-disk=6 madam: /dev/md0: Cannot reshape array without increasing size (yet).
I wanted to convert a 5-disk RAID5 to 6-disk RAID6.
If i use this command below, there is another error: mdadm --grow /dev/md0 --level=6 --raid-disk=6 --size=max madam: can change at most one of size, raiddisks, bitmap, and layout.
Could you give some instructions? Thanks.