Hi, Have you disabled apparmor? Please check apparmor_status if libvirtd is in enforcing mode then lttng traces will not be generated. Thanks, Shylesh On Fri, Oct 30, 2015 at 9:15 AM, hzwulibin <hzwulibin@xxxxxxxxx> wrote: > Hi, everyone > > After install hammer-0.94.5 in debian, i want to trace the librbd by lttng, but after done follow steps, i got nothing: > 2036 mkdir -p traces > 2037 lttng create -o traces librbd > 2038 lttng enable-event -u 'librbd:*' > 2039 lttng add-context -u -t pthread_id > 2040 lttng start > 2041 lttng stop > > So, is the lttng enabled in this version on debian? > > Thanks! > > -------------- > hzwulibin > 2015-10-30 > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Thanks & Regards Shylesh Kumar M _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com