Created attachment 1616717 [details] video_capture of the issue Description of problem: Via webadmin changing an existing DC compatibility level(from 4.3 to 4.2 or 4.1) with a local storage type is not available but with a shared storage type it is available. See short video attached. There is a workaround, see at additional info section. Version-Release number of selected component (if applicable): ovirt-engine 4.3.6.5-0.1.el7 How reproducible: 100% Steps to Reproduce: 1.Create data center DC-A + cluster with a local storage type and Compatibility Version 4.3 2.Edit DC-A and try to change the Compatibility Version to 4.2 or 4.1 Actual results: You can't only 4.3 is available in the dropdown. Expected results: As with editing an existing DC with a shared storage type you should also have 4.2 and 4.1 options available at the dropdown. Additional info: 1) Workaround: a) Change the DC to be a shared storage type. b) Change it to Compatibility Version 4.2 or 4.1. c) Change the storage type back to local. 2) Creating a DC with local/shared storage with Compatibility Version 4.3/4.2/4.1 works, only in edit/modify a DC with a local storage type has an issue. 3) Editing a DC with a shared storage type does show the Compatibility Versions 4.2 and 4.1 at the dropdown.
the DC can ben only upgraded to a higher version, showing older version (downgrade) is not possible. but what I see is: 1. select a data center with storage -> click edit 2. in versions list, all the version are present (which is not good) 3. change the storage type to local, then list the versions (the list will contain the current version only for the current dc) 4. change the storage type to shared, then list the versions (the list will contain the current version only for the current dc but when the popup first opened, the versions list showed all the versions)
Created attachment 1619443 [details] comment #1 flow preview attached a preview for the described steps in comment #1
Hi, The patch in this BZ does not allow downgrading an existing DC, even if it does not contain any hosts or storage. I have a new deployment of master and cannot downgrade the 'Default' DC to 4.3. Is it the expected behavior?
Data Center version can only be upgraded. this is an expected behavior
Verified via web-admin, version 4.4.0-0.13.master.el7. When trying to change DC compatibility level only upgrade is allowed, as expected. Checked both options of local and shared and for both verified that only upgrade is available and it depends on it cluster compatibility level as well.
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.