Same issue for me: root@myserver:~# uname -r 4.4.0-112-generic root@myserver:~# ceph version ceph version 12.2.2 (cf0baeeeeba3b47f9427c6c97e2144b094b7e5ba) luminous (stable) root@myserver:~# rbd create testimage --size 10G root@myserver:~# rbd ls -l NAME SIZE PARENT FMT PROT LOCK testimage 10240M 2 root@myserver:~# rbd map testimage rbd: sysfs write failed In some cases useful info is found in syslog - try "dmesg | tail". rbd: map failed: (110) Connection timed out root@myserver:~# dmesg | tail [ 1392.958472] libceph: mon0 51.254.215.26:6789 feature set mismatch, my 106b84a842a42 < server's 40106b84a842a42, missing 400000000000000 [ 1392.958721] libceph: mon0 51.254.215.26:6789 missing required protocol features
... same last two messages repeat -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1728739 Title: Attempt to map rbd image from ceph jewel/luminous hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1728739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
