Hi, I created and mounted a rbd for a virtual machine. And it can be used as a block device normally, but often prompt some log like below: "Oct 23 10:30:22 ubuntu12 kernel: [321506.941606] libceph: osd3 10.100.211.146:6810 socket closed Oct 23 10:30:59 ubuntu12 kernel: [321544.337856] libceph: osd9 10.100.211.68:6809 socket closed Oct 23 10:45:22 ubuntu12 kernel: [322407.233090] libceph: osd3 10.100.211.146:6810 socket closed Oct 23 10:45:59 ubuntu12 kernel: [322444.766796] libceph: osd9 10.100.211.68:6809 socket closed Oct 23 11:00:22 ubuntu12 kernel: [323307.529098] libceph: osd3 10.100.211.146:6810 socket closed Oct 23 11:01:00 ubuntu12 kernel: [323345.241679] libceph: osd9 10.100.211.68:6809 socket closed Oct 23 11:15:22 ubuntu12 kernel: [324207.821113] libceph: osd3 10.100.211.146:6810 socket closed Oct 23 11:16:00 ubuntu12 kernel: [324245.717747] libceph: osd9 10.100.211.68:6809 socket closed Oct 23 11:17:01 ubuntu12 CRON[10529]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Oct 23 11:30:23 ubuntu12 kernel: [325108.117134] libceph: osd3 10.100.211.146:6810 socket closed" These log also can be found in "/var/log/syslog". I google something about this problem,but didn't understand what you've wrote in "http://tracker.newdream.net/issues/2260" exactly. How can I resolve this problem? My ceph version is 0.48. Should I change some files, or modify some content of some file? Thank you ! -- 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