Have you started ceph-osd with LD_PRELOAD=/usr/lib64/liblttng-ust-fork.so [matched to correct OS path]? I just tested ceph-osd on the master branch and was able to generate OSD trace events. You should also make sure that AppArmor / SElinux isn't denying access to /dev/shm/lttng-ust-*. What tracing events do you see being generated from ceph-mon? I didn't realize it had any registered tracepoint events. -- Jason Dillaman ----- Original Message ----- > From: "Aakanksha Pudipeddi-SSI" <aakanksha.pu@xxxxxxxxxxxxxxx> > To: ceph-users@xxxxxxxxxxxxxx > Sent: Wednesday, January 6, 2016 10:36:13 PM > Subject: Unable to see LTTng tracepoints in Ceph > Hello Cephers, > A very happy new year to you all! > I wanted to enable LTTng tracepoints for a few tests with infernalis and > configured Ceph with the –with-lttng option. Seeing a recent post on conf > file options for tracing, I added these lines: > osd_tracing = true > osd_objectstore_tracing = true > rados_tracing = true > rbd_tracing = true > However, I am unable to see LTTng tracepoints within ceph-osd. I can see > tracepoints in ceph-mon though. The main difference with respect to tracing > between ceph-mon and ceph-osd seems to be TracepointProvider and I thought > the addition in my config file should do the trick but that didn’t change > anything. I do not know if this is relevant but I also checked with lsof and > I see ceph-osd is accessing the lttng library as is ceph-mon. Did anyone > come across this issue and if so, could you give me some direction on this? > Thanks a lot for your help! > Aakanksha > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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