You would normally do this on lower environments first to test this out. Do you have a LAB, DEV or QA environment to use before going to PROD? Specifically about the upgrade, I can only speak to what I did yesterday. Had to go to 4.2.8 from 4.2.1 before going to 4.3.5 . I did get RPM dependency issues but in the end the UI came back up and worked like a charm. However I didn't really have anything I really cared about in oVirt. My environment was only a testing one. Take a look at the notes here for more detail: https://www.ovirt.org/release/4.3.3/#centos--rhel Cheers, TK On 9/26/2019 6:47 AM, Demeter Tibor wrote:

Dear list members,

I would like to upgrade my Centos 7.6 based ovirt 4.2 to 4.3.5. How is safe the upgrade ? How is stable the actual branch ? It seems to me, in 4.3.x there are a lot of cases caused by live migration, snapshot deletion, etc. Are these really existing problems? So, I'm a little bit afraid of the upgrade. It is a productive system, I don't want to make an outage.

Thanks in advance, Regards,

* *

Tibor

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-- Thx, TK.