On 01/12/20 08:45, c.buhtz@xxxxxxxxx wrote: > I think my missunderstand depends also on my bad english? > > Am 30.11.2020 21:51 schrieb antlists: >> On 30/11/2020 20:05, David T-G wrote: >>> You don't see any "filesystem" or, more correctly, partition in your >>> >>> fdisk -l >>> >>> output because you have apparently created your filesystem on the entire >>> device (hey, I didn't know one could do that!). >> >> That, actually, is the norm. It is NOT normal to partition a raid array. > > In my understanding you are contradicting yourself here. > Is there a difference between > "create filesystem on the entire device" > and > "partition a raid array" > ? Yes. Creating a raid array on an entire device means "mdadm --create --devices sda sdb" partioning a raid array means "fdisk /dev/md127" Remember linux doesn't care what a block device is, it's a block device. So you can put a raid array directly on top of physical disks, and you can put a GPT on top of a raid array. Neither are recommended. Cheers, Wol
