Am 13.09.22 um 22:48 schrieb Roman Mamedov:

On Tue, 13 Sep 2022 22:46:23 +0200
Reindl Harald [off-list ref] wrote:

quoted

quoted

It has never occured to me to check, but you could also specify arrays by
"name=" there, instead of UUID. See "man mdadm.conf".

and the name is *what*

Name is, see mdadm --detail /dev/md1 | grep Name

[root@srv-rhsoft:/var/lib/mpd/playlists]$ mdadm --detail /dev/md1 | grep 
Name
               Name : localhost.localdomain:1  (local to host 
localhost.localdomain)

i nice joke when we talk about create new arrays, ensure they have the 
same identifiers, dd the data insinde the raid and remove the old RAID