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+++ This bug is a downstream clone. The original bug is: +++ +++ bug 1619866 +++ ====================================================================== Description of problem: We have a report of a customer that does not wish to use IO-Threads and after upgrade to 4.2.5 all VMs are getting randomly IO-Threads enabled. To reproduce: 1. Create VM with IO Threads Disabled 2. Power up the VM 3. Edit the VM, i.e. disable Memory Baloon* 4. Click OK RESULT: IO Threads is enabled for the next-run * Any config that triggers next-run config seems to do it. Only seem to happen if the VM is up. Version-Release number of selected component (if applicable): ovirt-engine-4.2.5.3-1.el7.noarch How reproducible: 100% Steps to Reproduce: As above Actual results: IO Threads Enabled Expected results: IO Threads Disabled (Originally by Germano Veit Michel)
it should be the same root cause (and same fix eventually) as bug 1619474 But I would prefer to keep this bug opened to independently verify both flows (Originally by michal.skrivanek)
Verified on: ovirt-engine-4.2.6.4-0.0.master.20180823141941.gitb3a5b18.el7.noarch Steps of verification: 1. Create a new VM with IO-Threads disabled. 2. Start the VM. 3. Change a VM property - for example disabled ballooning (confirm that the change require VM restart). 4. Check the VM configuration for next-run (IO-Threads should be disabled). 4. Restart the VM. 5. Check the VM IO-Threads. Results: The VM IO-Threads was disabled all along and didn't change when editing other VM property. (Originally by Liran Rotenberg)
Verified on: ovirt-engine-4.2.6.4-0.1.el7ev.noarch Same steps as in comment #7
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:2623