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[Bug 2113933] [NEW] VM started on s390x zVM in ubuntu_kvm_smoke_test will take more than 120s to spin up

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Po-Hsu Lin <2113933@xxxxxxxxxxxxxxxxxx>
Date: Wed, 11 Jun 2025 10:50:32 -0000
Reply-to: Bug 2113933 <2113933@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx

Public bug reported:

Issue found on O/linux 6.11.0-28.28 with s390x zVM kernel03

The default value to wait for a VM to spin up is 120s [1].
However, test shows it will take more than that on s390x zVM:

16:53:24 ERROR| [stderr] + uvt-kvm create bjf-test release=oracular arch=s390x
16:53:29 ERROR| [stderr] + uvt-kvm wait --timeout 600 bjf-test --insecure --ssh-private-key-file /home/ubuntu/.ssh/id_rsa
17:02:29 ERROR| [stderr] ++ uvt-kvm ip bjf-test

In this experimental case with timeout set to 600s, it took 540s to be
ready.


[1] https://manpages.ubuntu.com/manpages/focal/man1/uvt-kvm.1.html

** Affects: ubuntu-kernel-tests
     Importance: Undecided
     Assignee: Po-Hsu Lin (cypressyew)
         Status: In Progress


** Tags: s390x ubuntu-kvm-smoke-test

** Changed in: ubuntu-kernel-tests
       Status: New => In Progress

** Changed in: ubuntu-kernel-tests
     Assignee: (unassigned) => Po-Hsu Lin (cypressyew)

** Tags added: s390x ubuntu-kvm-smoke-test

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https://bugs.launchpad.net/bugs/2113933

Title:
  VM started on s390x zVM in ubuntu_kvm_smoke_test will take more than
  120s to spin up

Status in ubuntu-kernel-tests:
  In Progress

Bug description:
  Issue found on O/linux 6.11.0-28.28 with s390x zVM kernel03

  The default value to wait for a VM to spin up is 120s [1].
  However, test shows it will take more than that on s390x zVM:

  16:53:24 ERROR| [stderr] + uvt-kvm create bjf-test release=oracular arch=s390x
  16:53:29 ERROR| [stderr] + uvt-kvm wait --timeout 600 bjf-test --insecure --ssh-private-key-file /home/ubuntu/.ssh/id_rsa
  17:02:29 ERROR| [stderr] ++ uvt-kvm ip bjf-test

  In this experimental case with timeout set to 600s, it took 540s to be
  ready.

  
  [1] https://manpages.ubuntu.com/manpages/focal/man1/uvt-kvm.1.html

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