Storage domain server & Rolling pool upgrade
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Hello,
In the post about XCP-NG 9.0, there was a discussion about Storage Domain Virtual machines, as i understood, the project was abandonned, but the concept is still doable without this implementation.
https://xcp-ng.org/forum/post/102311
On each of my hosts, i have a VM dedicated for ceph which mount the PCI devices ( NVME disks ).
Everything works like a charm !
But the RPU is not available due to the VMS which have PCI attached resources.
Is it possible to exclude VMS from RPU and make it shutdown before the upgrade ?
something like you done to exclude Security warning about old windows guest tools.
This would be very great
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Yeah, as far as I understand, this looks like something RPU wasn't really designed to handle, and I'm not deep enough in the internals to say for sure how tricky it would be to add.
My instinct is this sits more in feature request territory than a bug, so I'd suggest filing it on https://feedback.vates.tech with something like "RPU: graceful shutdown/restart for PCI-pinned VMs" and your actual topology in the description. The product team will understand the constraint much better with a concrete Ceph setup to look at.
Someone here probably knows if there's a cleaner workaround than manually draining and shutting down the pinned VMs before each host update, but that's what I'd fall back on in the meantime. -
Technically speaking, this could be an improvement of the RPU yeah, for non-agile VMs (to shut them down). IDK if it's already in the backlog somewhere or not, pinging @gregoire
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@olivierlambert I added this feature request in the backlog regarding RPU improvements.
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