Rolling Pool Upgrade grayed out

[scpcom]

If I connect my XenServer 7.2 in XCP-ng Center and try to run a Rolling Pool Upgrade the server is grayed out
I needed to go back to XenCenter 7.2 where I could run Rolling Pool Upgrade from XS 7.2 to XCP-ng 7.4.1.
This works for a single host but will not work for a multi-host pool because after upgrade is done, XenCenter 7.2 will be unable to connect to the server.

[borzel]

Workaround: Upgrade pool manually.

I do allways manually upgrade my pools at work:

1. move all VMs from master (or shut down VMs)
2. upgrade master
3. move VMs back to master
4. move VMs on next host elsewhere or shut them down
5. upgrade that host
6. go to step 4) until all hosts are upgraded

It's far easier if you can shutdown all VMs, so you have not to migrate your VMs ;-)

[scpcom]

I forgot to add the feature request: :-)
Enable Rolling Pool Upgrade for free/unlicensed XenServer versions (at least for 7.0, 7.1 and 7.2).

[borzel]

Note to myself: Should be related to the brand name change from "XenServer" to "XCP-ng" or something else in this area.

[scpcom]

I found that Citrix removed it in XenCenter 7.4 for all free/unlicensed versions.
Related code:
https://github.com/xcp-ng/xenadmin/blob/master/XenAdmin/Wizards/RollingUpgradeWizard/RollingUpgradeWizardSelectPool.cs#L200
https://github.com/xcp-ng/xenadmin/blob/master/XenModel/XenAPI-Extensions/Host.cs#L451

[borzel]

as my personal tests show, it should be resolved with #51

[borzel]

I published a pre-release: https://github.com/xcp-ng/xenadmin/releases/tag/v7.4.2-RC1

@scpcom Can you please test your rolling pool upgrade again?

@gangsterrapper22 I think, we don't need an installer for this pre-release?

[gangsterrapper22]

@borzel I can create an Installer if needed but if this release is only for test then I think it is not needed.

[scpcom]

Rolling Pool Upgrade is possible now, but you need to place the required mini hotfixes inside XCP-ng folder:

Could not find file 'C:\XCP-ng_Center_7.4.2.5-RC1_Binaries\RPU003.xsupdate'.

RPU001: XenServer 6.2
RPU002: XenServer 6.5
RPU003: XenServer 7.0
RPU004: XenServer 7.1 and newer

[borzel]

hhmm.... not sure about that, if we can include this files... I think not, because they are Citrix branded and so not easly redistributable.

In future we don't need these xsupdate files any more, because of the yum repo of XCP-ng.

@olivierlambert How do you plan to implement/enhance the rolling pool upgrade feature of XCP-ng? Maybe it's possible to keep this per XAPI and use this for the rolling poll upgrade feature from XCP-ng Center and a new upgrade feature in XO?
In other words: As part of the rolling pool upgrade we could trigger "yum update" or whatever yum needs to do it's thing :-)

[scpcom]

Yes, thats OK I think. They can be just copied from the XenCenter folder to XCP-ng Center folder before starting the Upgrade.