Hi,
Your gluster mount option is not correct.
You need 'backup-volfile-servers=storagehost2:storagehost3' (without the volume name as they all have thaylt volume) .
yes, of course. I'm sorry but the appended volume name was a mistake I made for the email and not during deployment where only specified the FQDNs without the volname.
As mentioned, the mount generally seema to work as data ist written during deployment. It fails later during health check :-(
Best regards
Oliver