libqb0 0.16.0.real-1ubuntu3 (amd64 binary) in ubuntu vivid

 libqb provides a set of high performance client-server reusable features. It
 offers high performance logging, tracing, IPC and poll. Its initial features
 were spun off the Corosync cluster communication suite to make the accessible
 easier for other projects.
 .
 You'll need this package when installing the Pacemaker cluster manager (1.1.7
 or higher) as it makes use of functions provided by this library.