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Merge "Adding sysctl changes for post-copy migration"

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Zuul
2024-10-26 06:07:18 +00:00
committed by Gerrit Code Review
parent e4bd839547 3395484105
commit a8733bae3c
1 changed files with 9 additions and 0 deletions
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doc/source/admin/configuring-migrations.rst
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@@ -314,6 +314,15 @@ memory-intensive instances succeed.
interrupted, page faults cannot be resolved anymore and the instance is interrupted, page faults cannot be resolved anymore and the instance is
rebooted. rebooted.
.. important::
You may need to enable ``unprivileged_userfaultfd`` on newer kernels in
order for post-copy to work.
.. code-block:: console
sysctl vm.unprivileged_userfaultfd=1
.. TODO Bernd: I *believe* that it is certain to succeed, .. TODO Bernd: I *believe* that it is certain to succeed,
.. but perhaps I am missing something. .. but perhaps I am missing something.