Ceph » rbd

Hi ceph-team,

I am not sure if I created the ticket in the right place but we have a problem with our ceph lrbd --if we exceed a number of entries in the lrbd configuration.

OUR ENV:
SUSE: SLES 12.2
ceph version: 10.2.6-269-g57146d8
targetcli : Version : 2.1-17.1

Description:
I've attached 2 configs(lrbd -f ourconfig.cong):

One working --> newlrbd.conf
One not working --> newlrbd_wo.conf

Problem: if we exceed a number of entries inside the config it will literally crash with the bellow error - Even if the config is correct
Looking inside the /usr/sbin/lrbd --> it will die at:
def _get_optional(self, ioctx, config_name, attr):
...
return json.loads(ioctx.get_xattr(config_name, attr), object_pairs_hook=OrderedDict)

ERROR:
ceph-iscsi-mpio1:~ # lrbd -o
terminate called after throwing an instance of 'ceph::buffer::end_of_buffer'
what(): buffer::end_of_buffer
Aborted (core dumped)

Can you please advise us or help us - what we can do? is this a buffer limitation