Created attachment 474331 [details] Output from libguestfs-test-tool Description of problem: kernel-rt breaks libguestfs. When kernel-rt is installed, libguestfs uses it and is not able to run properly. A simple way to test it is running libguestfs-test-tool. kernel-rt and libguestfs were running on the host (bare metal). Version-Release number of selected component (if applicable): kernel-rt-2.6.33.7-rt29.45 python-libguestfs-1.2.7-1.el5.8 libguestfs-1.2.7-1.el5.8 See also BZ670942
See: https://bugzilla.redhat.com/show_bug.cgi?id=670942#c5
Given the feedback from the previous comment and the maintenance status of kernel-rt 1.3, closing as WONTFIX (yes, it should have been done long time ago).