JFS is not supported by quota-tools. It's necessary a single patch:
Created attachment 111461 [details]
support to JFS
nobody cared, closing...
Soon quota-3.13 should be in Rawhide, this version add JFS into a set of
As of yesterday, quota-3.13 should be available in Rawhided and I just
verfied the patch in Comment #1 is included in that release