Thank you every visitors and for those who did not had the chance to visit fosdem check this report:
https://xcp-ng.org/blog/2026/02/19/fosdem-2026-follow-up/
[image: vates-xcp-ng-at-fosdem-2026-1.webp]
One question, I promised to forward to the forum, how many VM are you running on XCP-ng ?
Dozen, hundreds, thousands or more ?
@afmart_dei I'd be surprised that you can't add this host to the pool because it has a different number of PIFs... more likely than not the version mismatch is what is getting you hung up here.
Is there anyway to update everything to the same level, once that is done then you should be able to add this host to the pool.
As for Windows XP, CentOS 4 (CentOS 4 was EoL'd in 2012.... only 14 years ago) so that's likely gonna be a hard no. XP was in 2014.. likely the same boat.
The issue likely being that no one wants to program on old ass OS's to support something that the original dev no longer supports.
@MichaelCropper
Truenas on bare metal just as storage, XCP-NG is also bare metal on 3 hosts to make a pool. That's the minimum if you want to enable High Availability, it also works really well as a "normal" pool which is what I have.
Rolling Pool functions are great, click the button and the system moves the VMS off of the host that need updates, reboots, moves VMs off of the next host, repeat. Only works with Shared storage.
Difficile de parler de « réalité » avec les benchmarks. Vérifiez aussi l'iodepth (qui dépend du type matériel que vous avez, sur du flash/NVMe vous pouvez monter à 128 ou 256), la latence entre en compte aussi bien sûr.
Le bottleneck principal est le monothreading de tapdisk, si vous testez sur plusieurs VMs différentes la somme va monter de manière assez régulière.
