Subcategories

• Management

  VMs, hosts, pools, networks and all other usual management tasks.
  476 Topics

  4k Posts

  P

  @Danp No, it's not quite that. We don't use HA anywhere. But reading the source code I did notice exactly what's mentioned in that bug: in some HA cases, the xen-api code will throw a NOT_ENOUGH_FREE_MEMORY that is just absolutely misleading. At the macro scale, I think that you could say that the issue I'm running into is that the RPU migrations aren't planned out across the entire process of the RPU. If you have VMs that take up a significant fraction of some hosts' memory, failure to plan the whole process at once can lead the system to get itself "wedged" where it's unable to evacuate one of the hosts. More narrowly, you could say that the issue is that during an RPU the host evacuation code gives up more easily than it could. Say that you're trying to evacuate host A with a 64 GB VM, and you have two other hosts, B and C, with 60 GB free. It will give up, even if there are VMs that you could move from B to C (or vice versa) that would open up one of them to having 64 GB free. If the evacuation during the RPU was more resilient, then the macro-scale issue would be less of a problem. (Although with a more resilient evacuation command but no large-scale planning, you might end up with an RPU that succeeds but is wildly inefficient.)
• Advanced features

  ACLs, Self-service, Cloud-init, Load balancing...
  105 Topics

  864 Posts

  M

  Is a centralized XOA server "managing" two remote Proxy-fronted XCP clusters supported with the SDN Controller Plugin? We are looking to deploy an architecture similar to this blog post from 2022: https://xen-orchestra.com/blog/xo-proxy-a-concrete-guide/
• Backup

  All XO backup features: full and incremental, replication, mirrors...
  515 Topics

  5k Posts

  A

  So not sure why this problem has come back but all backups are failing back to Full backups. 2026-07-06T02_09_34.032Z - backup NG.txt <- this was a Planned full backup. 2026-07-07T02_00_00.007Z - backup NG.txt - first Delta backup after full fell back to full. I just tried to disable "Purge snapshot data when using CBT" but still fell back to full. Unless i need to run a nother full job first?
• REST API

  Everything related to Xen Orchestra's REST API
  86 Topics

  645 Posts

  J

  Hello I'm pulling stats for all VMs to understand CPU usage. We're a bit behind the curve in terms of XO versions, but these questions hopefully are still relevant. If using a granularity of days, the interval is set to 86400 (understandably) but the endTimestamp varies. Running this on June 9th @ ~1740 we get timestamps for both Mon Jun 8 01:00:00 AM BST 2026 and Tues Jun 9 01:00:00 AM BST 2026. Does this average across the day? Why is the timestamp 0100? Why would there be different timestamps between VMs (all are running) and does that mean that the figures are misaligned in the results? These are retrieved via curl and a bash script, a bit hacky, but for clarity the request is: ++ curl -X GET -s -H accept:application/json -b authenticationToken=[[REDACTED]] -o [[REDACTED]] 'https://[[REDACTED]]/rest/v0/vms/[[REDACTED]]/stats?granularity=days' Really keen to know if we can control the start and endtime, as well as provide a manual interval, as well as the aggregation strategy (min, max, average). Are any of these possible? Lastly, is cpuUsage the percentage as per the dashboard, but averaged over all CPUs? Thanks so much in advance. James
• Infrastructure as Code

  Terraform, Packer or any tool to do IaC
  51 Topics

  471 Posts

  P

  The Kubernetes CSI driver for Xen Orchestra just hit v0.4.0, and we want it on more real clusters before it reaches a stable release candidate. If you run Kubernetes on XCP-ng VMs, this is a good time to give it a proper workout. What's new in v0.4.0: Local-storage support Automatic pool-discovery fallback Kubernetes metadata now lives in Xen Orchestra VDI tags instead of the deprecated other_config. That change also drops the old requirement for Xen Orchestra 6.4 or newer, so the driver runs on more deployments now. ️ Read this before you upgrade. v0.4.0 is a breaking change. The Kubernetes metadata moved from other_config to VDI tags, so you must migrate before upgrading from v0.3.0. Do not upgrade in place: follow the v0.3.0 to v0.4.0 migration guide in the release notes, then move to v0.4.0. What helps us most is hearing how it behaves on your own setup: what works, what breaks, which storage backend you use, and which flavour of Kubernetes you run (k3s, full k8s, or something else). Edge cases on real clusters are the ones we don't see in our own testing. Where to report: start right here in this thread. It keeps everything visible to the community and lets others on the same setup jump in. If something turns out to be a reproducible bug, we'll move it to a GitHub issue on the repo so the team can track it to a fix. Release notes and migration guide: https://github.com/vatesfr/xenorchestra-csi-driver/releases/tag/v0.4.0