Hello, thanks for your attention. I have started using rados striper library, calling the functions from a C program. As soon as I add libradosstriper to the linking process, I get this error when the program runs, even though I am not calling any functions from the rados striper library (I commented them out). LTTng-UST: Error (-17) while registering tracepoint probe. Duplicate registration of tracepoint probes having the same name is not allowed. /bin/sh: line 1: 61001 Aborted (core dumped) ./$test I had been using lttng in my program but removed it to ensure it wasn't causing the problem. I have tried running the program using gdb but the calls to initialise lttng occur before main() is called and so I cannot add a break point to see what is happening. thanks Paul _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com