DP23.4 + SLES 12 or 15: EADR backup fails

Hello, 

I am trying to reproduce some EADR issues for a customer.

So I created some VM cellmanager, and I want to try to restore these CMs with EADR.

Unfortunately I cant get at least the backup to work:

DP 23.5  -  SLES 12 - BTRF Root Filesystem

Backup of configuration object of cellserver is not able to collect EADR information;

[Major] From: VBDA@xxxxxx.xx "xxxxxx.xx [/CONFIGURATION]"  Time: 14.02.2024 13:07:09
[81:145]
	Automatic DR information could not be collected.
 	Aborting the collecting of system recovery data.

In AUTODR.log I can see many warnings and an error at the end:

20240214T120709 WARN  storage  Could not find volume for: [8a7e59d5-4135-42cc-af54-c6456dd76da6/@/var/log]
20240214T120709 WARN  storage  Could not find volume for: [8a7e59d5-4135-42cc-af54-c6456dd76da6/@/var/opt]
20240214T120709 WARN  storage  Could not find volume for: [8a7e59d5-4135-42cc-af54-c6456dd76da6/@/var/spool]
20240214T120709 WARN  storage  Could not find volume for: [8a7e59d5-4135-42cc-af54-c6456dd76da6/@/var/tmp]
20240214T120709 INFO  storage  Querying swap volumes
20240214T120709 INFO  volume   Swap device: /dev/sda1
20240214T120709 INFO  storage  Swap device /dev/sda1 -> volume: /dev/sda1
20240214T120709 ERROR storage  Couldn't find volume for path (/) in: .
20240214T120709 FATAL storage  EXCEPTION at /svnstore/unix/panther/dp_git_master/src/recovery/drm/src/core/storage.cpp(79):
20240214T120709 FATAL storage  N3drm11inval_errorE(2): [ENOENT;No such file or directory]: Cannot find volume for boot volume (/).

On SLES 15, the AUTODR collection fails at all - also no AUTODR.log is written to the server:

"SRD information could not be collected. Aborting the collecting of system recovery information."

Any hints?