Merge "Add multihash release note."

1 files changed, 15 insertions, 0 deletions

diff --git a/releasenotes/notes/multihash-support-f1474590cf3ef5cf.yaml b/releasenotes/notes/multihash-support-f1474590cf3ef5cf.yaml
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+++ b/releasenotes/notes/multihash-support-f1474590cf3ef5cf.yaml
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+---
+features:
+  - |
+    This release adds client support for the Glance "multihash" feature
+    introduced in Rocky.  This feature introduces two new image properties,
+    ``os_hash_algo`` and ``os_hash_value``.  The content of ``os_hash_algo``
+    is an algorithm identifier recognized by the Python ``hashlib`` library.
+    The ``os_hash_value``is a hexdigest of the image data computed using
+    this algorithm.  The ``os_hash_algo`` is not end-user settable; it
+    is configured in Glance by the cloud operator.  In the glanceclient,
+    the feature is limited solely to the display of these values.
+
+    If the "multihash" properties are not available on an image, their
+    values are displayed as ``None`` in the glanceclient image-show and
+    image-list responses.