In the engine Dashboard, when navigating to : Compute -> Data Center -> Guide me -> Configure storage And selecting iSCSI It is not possible to add the iSCSI storage, error reported is : "Cannot add Storage. Discard after delete is not supported by underlying Storage" This was originally thought that it was only after a fresh install, but you can reproduce this if you have already a NFS storage configured. This reproduced consistently across various setups, including bug filer reproducing it on his own environment. This bug is reported as dashboard bug because attempting to perform the same operation through the following path : Storage -> Storage Domains -> New Domain It works without any kind of issue(s). I do not believe there is a point in providing logs considering how easy it is to reproduce and the fact that it reproduces systematically. The workaround is to use Storage -> Storage Domains -> New Domain and then the operation succeeds. The problem is a bug causing the value of "DiscardAfterDelete" among others not being propagated from the front end. Irrespective of the checkbox being checked or not, it behaves as if Discard After Delete was ticked. I have a patch for this which I unit tested against 4.2.8.2-1.0.8.el7 and which stops the problem. I would like to submit it myself to Gerrit.
Submitted change 103240 .
Created attachment 1614983 [details] example error
Verified (rhev Software Version:4.4.0-0.17.master.el7): 1. Data canter > Guide me > add more storage 2. Choose a LUN and create an iSCSI SD 3. SD was created successfully.
This bugzilla is included in oVirt 4.4.0 release, published on May 20th 2020. Since the problem described in this bug report should be resolved in oVirt 4.4.0 release, it has been closed with a resolution of CURRENT RELEASE. If the solution does not work for you, please open a new bug report.