Hi @dadoubou ,
Well done on identifying that issue, getting a fix, and taking the time to share it with others in such a clear way!
You’re 100% correct on the root cause there!
This is actually a bug that was discovered shortly after we released 5.0.9 and for which a fix was released in 5.0.11 (V5.0+ Testing Channel Changelog - #22 by phillxnet). If you activate the Testing channel (Software update — Rockstor documentation) and update to the latest version, you should now no longer see this issue (not that it matters much for you as you already fixed it yourself). I simply wanted to clarify this for those users encountering that problem as well.
Please let us know how it goes with the rest of your endeavor!