I have a strange and undocumented state for my replication :
Protocol type: Synchronous
Connection: Connected
Source info:
Logical volume: lv0003
Consistency: Diskless
Destination info:
Logical volume:lv0003
Consistency:Consistent
IP address: 192.168.0.2
Diskless. No local block device has been assigned to the DRBD driver. This may mean that the resource has never attached to its backing device, that it has been manually detached using drbdadm detach, or that it automatically detached after a lower-level I/O error.