@olivierlambert ok, thanks. I will try this out.

Hello,

I did something stupid (please be kind with me ). I have two host setup. I started to upgrade from 7.6 to 8.2 and I did not read the documents well enough. It happened that I upgraded slave first and now it's 8.2 and master is still 7.6 with running VM's on it. Obviously, slave cannot connect with master anymore. I see "The host toolstack is still initialising. Please wait." when I run xe task-list so I guess, toolstack is not able to start either.

How should I proceed now? I see 3 possible ways to solve it but not sure what is the best way to do it.

1. Downgrade the slave back to 7.6 and start again, master first
2. upgrade master to 8.2 with VM's on it (which they all are down while I'm upgrading) and everything starts to work again?
3. is there another way to fix this?

All tips are greatly appreciated.