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stormi

CCing @Team-XAPI-Network and @Team-Hypervisor-Kernel for them to have a look at this strong vs weak host model and the impact on HA.

stormi

@pandusen said:
its scary that GPU passthrough still has a low priority for XCP-ng, during the boom of AI and local LLM Inferencing.

As XCP-ng product owner, and someone who sees how much work developers put into such topics, may I ask you to elaborate on this "has low priority" statement?

poddingue

Your thread looks a lot like https://xcp-ng.org/forum/topic/12321. Same error, same call, HA enabled there too. Olivier's answer on that one was that VMs whose HA restart priority isn't Restart aren't protected, so they never get a real evacuation plan.
His two workarounds were setting those VMs to Restart, or turning HA off for the maintenance window.

It doesn't land for everyone, though. On https://xcp-ng.org/forum/topic/12348 @MajorP93 fixed his by moving every VM from best-effort to restart, and @acebmxer tried the same thing and got HA_OPERATION_WOULD_BREAK_FAILOVER_PLAN instead. Same change, opposite outcome.

So, what are your VMs set to, restart or best-effort? That would tell us whether you're looking at the same thing or something else entirely.

Upstream there are two PRs off the back of that discussion. 7145 merged on 8 July and only makes the error message clearer. 7146 is the one that changes the evacuation behaviour itself, and it's still open. So if it is the same problem, I don't think there's anything you can pull down yet.

poddingue

Thanks, @Jonathon !

poddingue

@Jonathon if I read your xen02 output right, from before the resync it already had 0 out of sync towards both other nodes, so the big number only ever lived between xen01 and xen05.

After invalidate-remote both of them are copying fully from xen02 (that's the SyncSource and Inconsistent lines in your last post).

I don't know whether that secondary-to-secondary figure comes back on its own once the resync is done.
If it does, the date it reappears and roughly what that k8s worker was doing at the time are probably what @Team-Storage would want to see. I'm curious too, so please do post how it looks after a few days.

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