[ovirt-users] oVirt 3.5 on RHEL 6.6 hyperv enabled breaks Windows VMs

[Charles Gruener]

https://bugzilla.redhat.com/show_bug.cgi?id=1110305

This enabled the hv_relaxed flag on all my Windows VMs, causing them to no
longer boot.  The same thing would happen if I simply booted from the
Windows install media.  I would get a screen with a stop error:

Your PC needs to restart.
Please hold down the power button.
Error Code: 0x0000001E
Parameters:
0xFFFFFFFFC0000096
0xFFFFF802C4044EA4
0x00000000000000000
0x00000000000000000

I created a file called
/etc/ovirt-engine/osinfo.conf.d/01-windows.properties that had one line:

os.windows_xp.devices.hyperv.enabled.value = false

I restarted ovirt-engine and now I can start my Windows VMs.

Why does this occur?  Is it because I upgraded from 3.4 to 3.5?  Is there
something else I'm doing wrong?  I would like to not need this workaround.
Thanks.

Charles
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