openstack/cinder
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Merge "Doc note warning about retyping an unencrypted/encrypted volume."

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Zuul 2020-08-03 18:11:03 +00:00 committed by Gerrit Code Review
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doc/source/contributor/migration.rst
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@ -45,6 +45,13 @@ regardless if they are located on the same c-vol node or not.
Scenario 2: Migration between two back-ends with different volume types,
regardless if the back-ends are located on the same c-vol node or not.
.. note::
Retyping an unencrypted volume to the same size encrypted volume will
most likely fail. Even though the volume is the same size as the source
volume, the encrypted volume needs to store additional encryption
information overhead. This results in the new volume not being large
enough to hold all data.
Please do not try this in older releases.
How to do volume migration via CLI
----------------------------------