I did search a bit through the forum and tried some commands. UNfortunately I cannot access SSH so I cant copy them to full extend here.
Tried
cat /proc/mdstat
blkid
fdisk -l | grep "Disk "
mdstat shows all 3 Raided Disks in md0 and active so looks ok.
blkid shows sda, sdb and sde (the md0 ext 4 RAID5) and the two sdc1 and sdd1 - those two are my UFS drives.
sdc1 and sdd1 have exactly the same entries and numbers for LABEL, UUID, TYPE and PARTUUID but apart from that nothing obviously wroong points to my eye....
fdisk though showed something:
on sdb and sdc it says Backup GPT table is corrupt, but the primary seems OK, so that will be used.
Does this point somebody to an obvious issue?
I am a bit lost...