[ovirt-users] the better way to update vdsm

[Daniel Helgenberger]

Replying to my own mail since upgrading opportunities are not many.
Considering the procdure mentioned worked very well, it needs some
refinement.
On 24.09.2014 13:30, Daniel Helgenberger wrote:
> Hello Nathanaël,
>
> I think the supposed way to upgrade would be:
Here you need to insert:
# yum update engine-setup on the engine
(and for a new major version also new .repo files)
this is necessary since the engine-setup utility cannot upgrade itself
(though this might be doable;  RFE? :)
>
> * (hosted-engine only) put cluster in global maintenance if running
> hosted-enfgine
> * upgrade Engine using engine-setup (this *should* detect product updates)
> * (hosted-engine only) disable global maintenance
> * Put host in maintenance mode (witch will migrate VMs automatically)
This did not work for the hosted engine VM for some reason; I migrated
it manually. Is this intentional?
> * Click 'reinstall host' in Engine (this step will will invoke yum update?)
> * Activate host
>
> continue with the other hosts
>
>
> If there are kernel updates, I usually update them as well in the
> process (involving manual yum).
>
> Can anyone clarify if 'reinstall host' invokes yum? Thanks!
It will run yum update; but only on oVirt packages. One might want to
run it again to update all other system packages. Again, this makes sense.
>
>
> On 24.09.2014 11:41, Nathanaël Blanchet wrote:
>> Hi all,
>>
>> I'm about to update to 3.4.4 with the associated vdsm. Updating vdsm with yum is 
>> trivial, but it usually breaks running vms on the host.
>> So these are the steps I follow each time:
>>
>>   * live migrating runnings vms to a another host in the cluster
>>   * putting the host in maintenance
>>   * updating vdsm
>>   * activating the host
>>   * getting back the vms
>>   * and so on with the other hosts...
>>
>> But sometimes it is not enough, I need to reinstall the host so as to the host 
>> be able to successfully activate.
>>
>> When getting back the vms on the initial host, I must do it manually to load 
>> balance vms between the hosts and this is not very convinient.
>>
>> So my question is : do I update in the right way, or is there any 
>> recommendations that I didn't find anyway?
>>
>> Thanks.
>>

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Daniel Helgenberger
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