GitHub user herrickaccuwebhosting added a comment to the discussion: Can't start the virtual machine [CloudStack 4.22.1.0 | XCP-NG 8.2.1]
That Types$UuidInvalid right after "Created Instance ... for i-354-8711-VM" is the interesting part, XAPI is rejecting the VM object CloudStack just created, not failing on capacity or networking (those all succeeded). A few things worth checking: XAPI database desync on that host. This error often shows up when the XenServer/XCP-ng host's XAPI toolstack has a stale or orphaned VM object with the same UUID sitting in its local DB, sometimes left behind from a previous failed start/migrate. Try xe vm-list params=uuid,name-label on the affected hosts (77360, 77359, 77352 in your logs) and check if d81f6675-9f75-4b28-bf89-bbee9c4c4432 already exists there in a weird state. Restart the toolstack. xe-toolstack-restart on the specific host that's throwing it, this clears a lot of stale XAPI object cache issues without needing a reboot. Check xensource.log on that host around the same timestamp, XAPI's own log usually has more detail on why it rejected that specific UUID than what bubbles up to CloudStack's log. Notice it fails identically across three different hosts (77360, 77359, 77352), so this probably isn't a single host issue, it's more likely the VM instance record on the CloudStack DB side, or how CloudStack 4.22.1 is calling VM.create against XCP-ng 8.2.1 specifically. Worth checking if there's a known compatibility issue between that exact CloudStack and XCP-ng version combo on GitHub issues, this smells like a version mismatch bug rather than infra. As a workaround test, try destroying and recreating just that one VM's instance record (not the disk) if downtime is acceptable, if a fresh UUID starts clean, that confirms it's a stuck/corrupt record rather than a systemic issue. We run XCP-ng backed CloudStack too at AccuWeb.Cloud and this specific UUID rejection has usually traced back to toolstack cache weirdness in our experience, so the toolstack restart is worth trying first since it's low risk. GitHub link: https://github.com/apache/cloudstack/discussions/13717#discussioncomment-17857693 ---- This is an automatically sent email for [email protected]. To unsubscribe, please send an email to: [email protected]
