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  1. OpenShift Virtualization
  2. CNV-64466

Localnet does not work well with cross-cluster live-migration

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      Description of problem:

      Based on initial testing, localnet live migration downtime is much worse when live migration is performed between clusters, compare to live migration within a cluster.

It should be comparable.

      Version-Release number of selected component (if applicable):

      4.19

      How reproducible:

      Tried only once in https://redhat-internal.slack.com/archives/C019X3PEF2B/p1750750969236329?thread_ts=1750750738.384119&cid=C019X3PEF2B

      Steps to Reproduce:

      1. Measure downtime during live-migration between clusters, use a quiet small VM, and colocated workers

      Actual results:

      Downtime of 12 seconds

      Expected results:

      Comparable downtime to live migration within a cluster, i.e. sub 1 second

      Additional info:

      We may want to run the same test with linux bridge CNI. Bridge CNI does not involve any cross-component synchronization and so it should perform the same way within and between clusters.

              ellorent Felix Enrique Llorente Pastora
              phoracek@redhat.com Petr Horacek
              Yossi Segev Yossi Segev
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                Created:
                Updated: