Description of problem: I've tried to create pool with same name and UI has allowed it. Then there was no error message, no failed task. There is only error message in Skyring log: ERROR storage.go:147 POST_Storages] admin:22c09efe-0b1e-41c0-81b4-bcc3c5c8f630-Storage entity: testpool already added Version-Release number of selected component (if applicable): ceph-ansible-1.0.5-15.el7scon.noarch ceph-installer-1.0.11-1.el7scon.noarch rhscon-ceph-0.0.18-1.el7scon.x86_64 rhscon-core-0.0.19-1.el7scon.x86_64 rhscon-ui-0.0.34-1.el7scon.noarch How reproducible: 100% Steps to Reproduce: 1. create cluster and pool 2. try to create pool with same name as in 1. Actual results: There are no checks for duplicates when user tries to create object(cluster, pool, rbd, user) with already existing name. Expected results: There should be proper error message in UI when user tries to create object(cluster, pool, rbd, user) with already existing name.