libceph missing protocol

root@s1:~# qm start 108
In some cases useful info is found in syslog - try "dmesg | tail" or so.
rbd: sysfs write failed
can't mount rbd volume vm-108-disk-1: rbd: sysfs write failed
root@s1:~# dmesg | tail
[14388.197775] libceph: mon2 192.168.121.30:6789 feature set mismatch, my 106b84a842a42 < server's 40106b84a842a42, missing 400000000000000
[14388.200927] libceph: mon2 192.168.121.30:6789 missing required protocol features
[14398.213714] libceph: mon0 192.168.121.33:6789 feature set mismatch, my 106b84a842a42 < server's 40106b84a842a42, missing 400000000000000
[14398.216700] libceph: mon0 192.168.121.33:6789 missing required protocol features
[14408.238541] libceph: mon1 192.168.121.32:6789 feature set mismatch, my 106b84a842a42 < server's 40106b84a842a42, missing 400000000000000
[14408.241499] libceph: mon1 192.168.121.32:6789 missing required protocol features
[14418.214042] libceph: mon0 192.168.121.33:6789 feature set mismatch, my 106b84a842a42 < server's 40106b84a842a42, missing 400000000000000
[14418.217078] libceph: mon0 192.168.121.33:6789 missing required protocol features
[14428.198470] libceph: mon1 192.168.121.32:6789 feature set mismatch, my 106b84a842a42 < server's 40106b84a842a42, missing 400000000000000
[14428.201448] libceph: mon1 192.168.121.32:6789 missing required protocol features