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Roland Vaughn's avatar
Roland Vaughn
Copper Contributor
Apr 18, 2018

Live Migration fails with "Disconnected VM Switch(s)" error on 17639 S2D cluster

I did an in-place upgrade of a 17623 S2D cluster to 17639 and live migrations now fail with Event ID 21502:

"Live migration of (VM) failed.
(VM) failed to live migrate to the destination (SERVER) because the destination has disconnected VM switch(s)."


There are no disconnected VM switches and it worked in 17623.

 

I have tried recreating the VM switches to no avail. I also get the same error after a clean install and setup of the cluster. The only way I can get the VMs to live migrate is to disconnect the virtual NIC in the VM settings first.


I also submitted this to the Feedback Hub. 

Hyper-V

4 Replies

  • Minh Phan's avatar
    Minh Phan
    Copper Contributor
    Jun 22, 2018

    Recreate the vSwitch with a different name solved the issue for me.

    • Alexey Shurov's avatar
      Alexey Shurov
      Copper Contributor
      Jun 26, 2018

      I use Build 17650.

      And the same problem. Re-creating the switch did not solve the problem.

      after disabling "network protection" everything works.

       

  • Roland Vaughn's avatar
    Roland Vaughn
    Copper Contributor
    Apr 21, 2018
    Reverting to 17623 solved this issue. It has something to do with the new build.
    • Lars Iwer's avatar
      Lars Iwer
      Copper Contributor
      Jun 12, 2018

      Are you seeing this behavior in more recent builds as well?

      We made some tweaks to the "link up" detection.

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