update:
Looks like my MBLD is having a hardware problem - nothing works, so I just copied my data from
Raid(1) disc A to another disc
I used LINUX rescue system described in
I plugged disc A to a SATA USB controller and started mentioned rescue system.
Unfortuntely disc A could not be mounted (ext4 fs with block size of 65536) - not supported.
So I switched to command “debugfs /dev/md3” (to access my disc)
using debugfs-command “ls” or “cd” to check dirs/files on “shares” directory
With debugfs-command rdump I was able to copy missing content to another attached disc.
Check “man debugfs” for further details.
