The update to 3.4.0 beta2 was very smooth. My 3.3.3 setup was very basic so my testing was not extremely extensive, but I wanted to make sure I could still override NFS mount options (I could) to ensure use of RDMA. Now I'd like to downgrade, but that was not as simple as I'd hoped. I could not find any definitive docs on the subject so pieced together the steps. # Backup 3.3.3 $ engine-backup --mode=backup --scope=all --file=engine-20140211-1457.tar.bz2 --log=engine-backup.log # Enabled the 3.4.0 repo per release notes $ yum update ovirt-engine-setup $ engine-setup # I tested 3.4.0 and wanted to "downgrade". $ engine-backup --mode=restore --scope=all --file=engine-20140211-1457.tar.bz2 --log=engine-backup.log FATAL: Engine service is active - can not restore backup $ /etc/init.d/ovirt-engine stop $ engine-backup --mode=restore --scope=all --file=engine-20140211-1457.tar.bz2 --log=engine-backup.log Restoring... FATAL: Backup version '3.3' doesn't match installed version # Disabled the 3.4.0 repo $ yum downgrade ovirt-engine-setup-3.3.3-2.el6 Loaded plugins: downloadonly, fastestmirror, security, versionlock Setting up Downgrade Process Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package ovirt-engine-setup.noarch 0:3.3.3-2.el6 will be a downgrade ---> Package ovirt-engine-setup.noarch 0:3.4.0-0.7.beta2.el6 will be erased --> Finished Dependency Resolution Error: Package: ovirt-engine-3.4.0-0.7.beta2.el6.noarch (@ovirt-3.4.0-prerelease) Requires: ovirt-engine-setup >= 3.4.0-0.7.beta2.el6 Removing: ovirt-engine-setup-3.4.0-0.7.beta2.el6.noarch (@ovirt-3.4.0-prerelease) ovirt-engine-setup = 3.4.0-0.7.beta2.el6 Downgraded By: ovirt-engine-setup-3.3.3-2.el6.noarch (ovirt-3.3.3) ovirt-engine-setup = 3.3.3-2.el6 Available: ovirt-engine-setup-3.3.0-4.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.0-4.el6 Available: ovirt-engine-setup-3.3.0.1-1.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.0.1-1.el6 Available: ovirt-engine-setup-3.3.1-1.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.1-1.el6 Available: ovirt-engine-setup-3.3.1-2.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.1-2.el6 Available: ovirt-engine-setup-3.3.2-1.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.2-1.el6 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest # Re-enabled the 3.4.0 repo $ yum downgrade ovirt-engine-setup-3.3.3-2.el6 Loaded plugins: downloadonly, fastestmirror, security, versionlock Setting up Downgrade Process Loading mirror speeds from cached hostfile ovirt-3.3.3 | 2.9 kB 00:00 ovirt-3.4.0-prerelease | 3.4 kB 00:00 ovirt-stable | 2.9 kB 00:00 Resolving Dependencies --> Running transaction check ---> Package ovirt-engine-setup.noarch 0:3.3.3-2.el6 will be a downgrade ---> Package ovirt-engine-setup.noarch 0:3.4.0-0.7.beta2.el6 will be erased --> Finished Dependency Resolution Error: Package: ovirt-engine-3.4.0-0.7.beta2.el6.noarch (@ovirt-3.4.0-prerelease) Requires: ovirt-engine-setup >= 3.4.0-0.7.beta2.el6 Removing: ovirt-engine-setup-3.4.0-0.7.beta2.el6.noarch (@ovirt-3.4.0-prerelease) ovirt-engine-setup = 3.4.0-0.7.beta2.el6 Downgraded By: ovirt-engine-setup-3.3.3-2.el6.noarch (ovirt-3.3.3) ovirt-engine-setup = 3.3.3-2.el6 Available: ovirt-engine-setup-3.3.0-4.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.0-4.el6 Available: ovirt-engine-setup-3.3.0.1-1.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.0.1-1.el6 Available: ovirt-engine-setup-3.3.1-1.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.1-1.el6 Available: ovirt-engine-setup-3.3.1-2.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.1-2.el6 Available: ovirt-engine-setup-3.3.2-1.el6.noarch (ovirt-stable) ovirt-engine-setup = 3.3.2-1.el6 Available: ovirt-engine-setup-3.4.0-0.5.beta1.el6.noarch (ovirt-3.4.0-prerelease) ovirt-engine-setup = 3.4.0-0.5.beta1.el6 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest # Disable 3.4.0 repo again $ yum remove ovirt-engine-setup ovirt-engine-setup-base $ yum install ovirt-engine-setup $ engine-backup --mode=restore --scope=all --file=engine-20140211-1457.tar.bz2 --log=engine-backup.log Restoring... FATAL: Database is not empty $ engine-cleanup $ engine-backup --mode=restore --scope=all --file=engine-20140211-1457.tar.bz2 --log=engine-backup.log Restoring... FATAL: Database is not empty Attached are the two engine-cleanup logs from both attempts. The first (from 20140211) was answering "Yes" only to "remove Engine DB content". The second (from 20140212, today) was "Yes" to "remove all components". Thanks - Trey