On Mon, 11 Feb 2013, Roman Alekseev wrote: > Hi, > > When I try to reboot a client server without unmounting of rbd volume > manually > its services stop working but server doesn't reboot completely and show the > following logs in KVM console: > > [235618.0202207] libceph: connect 192.168.0.19:6789 error -101 That is #define ENETUNREACH 101 /* Network is unreachable */ Note that that (or any other) socket error is not necessarily fatal; the kernel client will retry and eventually connect to that or another OSD to complete the IO. Are you observing that the RBD image hangs or something? You can peek at in-flight IO (and other state) with cat /sys/kernel/debug/ceph/*/osdc unmount/unmap should not be necessarily in any case unless there is a bug. We backported a bunch of stuff to 3.6.6, so 3.6.10 ought to be okay. You might try a newer 3.6.x kernel too; I forget if there was a second batch of fixes.. sage -- 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
