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 ?
The thing is that it works very well and doesn't need fixes… I know, not usual right? It was so stable that we left it like that waiting for people coming for bugs and nothing happened… We'll cut a 1.0 in the next weeks/months.
Hello,
I have hardware issues, specially on the disks.
Unfortunately I don't have fully access to the machine to be able to confirm if is effectively disks( more likely ) or back-plane.
Interestingly some of those VMs does work, I can boot them and work with them but cannot copy the disks.
Since those are Windows server VM I have also tried the Windows backup tool and this failed as well to perform to finish the backup.
So I'm closing this investigation as hardware issue.
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.
