openstack/cinder
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Merge "[docs] quotas apply to image-volume-cache owner"

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Zuul 2024-01-19 15:30:24 +00:00 committed by Gerrit Code Review
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doc/source/admin/image-volume-cache.rst
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@ -18,6 +18,8 @@ instead of downloading the image contents and copying data to the volume.
The cache itself is configurable per back end and will contain the most The cache itself is configurable per back end and will contain the most
recently used images. recently used images.
.. _internal-tenant:
Configure the Internal Tenant Configure the Internal Tenant
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -89,6 +91,20 @@ cache entries will be configured as:
image_volume_cache_max_size_gb = 200 image_volume_cache_max_size_gb = 200
image_volume_cache_max_count = 50 image_volume_cache_max_count = 50
.. note::
As mentioned above, the :ref:`internal tenant<internal-tenant>` configured
as the cache owner does not require any special permissions and is subject
to quotas like any other user. Hence, it is possible that the quotas for
the internal tenant may need to be adjusted to allow the internal tenant
to hold at least ``image_volume_cache_max_count`` volumes not exceeding
``image_volume_cache_max_size_gb`` total size. Thus, although the default
value for these image volume cache settings is ``0`` (unlimited), in
practice, these will be limited by the quotas that apply to the internal
tenant.
See :doc:`../cli/cli-cinder-quotas` for more information.
Notifications Notifications
~~~~~~~~~~~~~ ~~~~~~~~~~~~~