Re: [Engine-devel] Question about host compatibility version
----- Original Message -----
From: "Ashok Vemuri" <ashok(a)vemuris.com>
To: engine-devel(a)ovirt.org
Sent: Tuesday, May 29, 2012 2:47:55 PM
Subject: [Engine-devel] Question about host compatibility version
Hello,
I have a newbie question regarding host/cluster compatibility
versions. I hope someone could clarify this for me.
We have an old lab setup in which we were managing KVM hostnodes
using RHEV Manager ( version 2.2.4.51796 ) . We are now trying to
upgrade to the latest version of oVirt Engine ( version
3.1.0_0001-1.8.el6 ).
Now, when I add the old KVM node to oVirt Engine, I am getting
following error message:
Host's Compatibility Version doesn't match the Cluster's
Compatibility Version
Can someone tell me if oVirt Engine is backward-compatible with older
hostnodes? Or do I need to upgrade one or more components (such as
VDSM) on the hostnode to be compatible with new engine?
oVirt 3.1 will support 3.0 and 3.1 cluster levels, but it looks like you're trying to
mix RHEV 2.2 RHEV hypervisors with oVirt 3.1, that's not going to work.
I've never tried mixing RHEV 2.2 and oVirt 3.0, it might work in theory but for sure
RHEV 2.2 and oVirt 3.1 will not work.
Here is the version information from the hostnode I'm trying to
add:
OS : RHEV Hypervisor - 5.6 - 9.3.el5_6
Kernel : 2.6.18 - 238.5.1.el5
KVM : 83 - 224.el5
VDSM : 2.2.63.23
SPICE : 0.3.0 - 54.el5_5.2
Thanks,
Ashok
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