Hi, With a one monitor one OSD test setup(osd pool default size = 1), I captured the packets with tshark. pcap.out file: https://ufile.io/43c78 The test I did was: dd if=tmp.txt bs=512 count=1 of=/dev/rbd0 oflag=direct About 350 packets were captured just for above simple "dd" command. If you open the file with wireshark, you'll see packet #41 is the data packet. "192.168.122.1" is the OSD and "192.168.122.131" is the rbd client. What are other packets? Thanks. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html