Description of problem: I started two deployments in parallel. One for RHEV+CFME and the other for RHELOSP. Both of them are now syncing content, but the second one (RHELOSP) reports sub task failed. The sub task: Id: a2cc12a5-ebe0-4584-8c8c-26c7982b91e4 Label: Actions::Katello::Repository::Sync Name: Synchronize Owner: admin Started at: 2016-01-27 10:56:20 UTC Ended at: 2016-01-27 10:56:22 UTC State: stopped Result: error Params: repository 'Red Hat Enterprise Linux 7 Server Kickstart x86_64 7.1'; product 'Red Hat Enterprise Linux Server'; organization 'Default Organization' reports error: Required lock is already taken by other running tasks. Please inspect their state, fix their errors and resume them. Required lock: read Conflicts with tasks: - https://<URL>/foreman_tasks/tasks/48b8eefb-3174-4924-8ac2-9f56372ae0d2 The conflicting task is: Id: 48b8eefb-3174-4924-8ac2-9f56372ae0d2 Label: Actions::Fusor::Content::ManageContent Name: Manage Content Owner: admin Started at: 2016-01-27 10:37:02 UTC Ended at: State: running Result: - Params: {"services_checked"=> ["pulp", "pulp_auth", "candlepin", "candlepin_auth", "elasticsearch"], "locale"=>"en"} which is the manage content task for the first deployment (RHEVM+CFME). Version-Release number of selected component (if applicable): RHCI-6.0-RHEL-7-20160126.7-RHCI-x86_64-dvd1.iso RHCIOOO-7-RHEL-7-20160126.2-RHCIOOO-x86_64-dvd1.iso How reproducible: Happened to me once Steps to Reproduce: 1. Do two parallel deployments in such a way that they will try to sync content at the same time 2. Inspect Installation Progress screen of the second deployment 3. Actual results: Sub task failed; Required lock is already taken by other running tasks Expected results: Maybe the second task should wait for the first task to finish Additional info: