<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>(I should add that I'm trying to upgrade "oVirt Engine Appliance 4.0" to "oVirt Engine Appliance 4.1")<br></div><div><br data-mce-bogus="1"></div><div data-marker="__QUOTED_TEXT__"><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Hello,<br></div><br><div>I'm trying to upgrade an appliance based oVirt install (2 nodes with centos 7.3, ovirt 4.0) using "hosted-engine --upgrade-appliance" on one host.<br></div><br><div>After multiples tries, I always get this error at the end :<br></div><br><div>[ INFO ] Running engine-setup on the appliance<br> |- Preparing to restore:<br> |- - Unpacking file '/root/engine_backup.tar.gz'<br> |- FATAL: Backup was created by version '4.0' and can not be restored using the installed version 4.1<br> |- HE_APPLIANCE_ENGINE_RESTORE_FAIL<br>[ ERROR ] Engine backup restore failed on the appliance<br></div><br><div>is this normal? </div><div>is this process not yet compatible with oVirt 4.1 appliance?<br></div><div>which is the "official" way to update oVirt from 4.0 to 4.1<br></div><br><div>I tried to do a "yum update && engine setup && reboot" on engine, and indeed it works, but there is no rollback possible, so it seems a little dangerours (?)<br></div><div><br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><br><div><div>cordialement, regards,</div><br><table style="margin: 0px; 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