GitHub user winterhazel added a comment to the discussion: KVM: cross cluster migration - hidden feature?
@ingox cross-cluster live migration with KVM has been supported for a while, but the documentation was never updated. The "UI bug" was actually a bug in the `findHostsForMigration` API, which the UI uses to show which hosts are suitable for migration. There was a regression in 4.20.3 and 4.22.1 that made it stop returning hosts from other clusters. It was fixed through #13452, which will be available in 4.22.2 and 4.23.0 (and 4.20.4, if this version releases). One interesting note regarding the KVM live migration that I don't see mentioned often: it uses the libvirt connection between the hosts to transfer the disks, so direct migration between primary storages that are not shared by the source and destination hosts is also possible. I know this works for NFS, SharedMountPoint, and local storage (probably also for CLVM and CLVM_NG). However, there were a few regressions between versions 4.20 and 4.22 that blocked live migration to SharedMountPoint (without workarounds) and were not addressed yet (see #13390). GitHub link: https://github.com/apache/cloudstack/discussions/13963#discussioncomment-18170108 ---- This is an automatically sent email for [email protected]. To unsubscribe, please send an email to: [email protected]
