To run lvm commands inside the mock env, we need this configuration: # cat /etc/lvm/lvmlocal.conf activation { udev_sync = 0 udev_rules = 0 } We can use these options from the command line, using --config '...' - but having it in the local lvm conf, we can test also vdsm lvm commands running in mock. This enables very interesting unit tests that we cannot write today, using real lvs on top of loop device, instead of our complicated and fragile fake lvm. Here is an example of such test: https://gerrit.ovirt.org/#/c/74991/11/tests/virttests/dmstats_test.py This runs now successfully on travis and jenkins! It would be nice if we can include this conf file in the automation/ dir, and have it installed inside the chroot, or we can install it manually from check-patch.sh. For travis we will write this file when building the container. Nir