[Users] affects of changing compatibility setting on running cluster

[Itamar Heim]

On 03/06/2014 04:59 PM, Charles Weber wrote:
> Hi everyone,
> I believe I need to change my cluster compatibility level and would like to know if I can do this ona live cluster or if I have to change everything to maintenance mode first.
>
> I ran engine setup and upgraded to current engine level then tried to add a new node using the 3.3.4 el6 iso. This resulted in an error:
>
> Host x.x.x.x is installed with VDSM version (4.14) and cannot join cluster Default which is compatible with VDSM versions [4.13,4.9,4.11,4.12,4.10].
>
> My current versions are:
> Engine 3.3.4-1.el6 at compatibiltiy version 3.2
>
> 2 Nodes running CentOS 6.4 with VDSM 4.10.3-0.36.23.el6
>
> Am I correct that I need to change the compatibility version to 3.3?
> This has some production VMs, do I need to turn everything off first or is this a non-interruptive change?
> How will this upgrade affect my current 2 hosts at their version?
>
> My original idea was to migrate working VMs to new ovirt ISO node and then re-install original nodes to the same version off the 3.3.4 el6 iso.
>
> I appreciate any advice.
> Chuck
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>

actually no. this sounds like a bug in VDSM 4.14 not updated to report 
compatibility with ovirt-engine 3.3
danken?