Merge "api-ref: explain aggregate set_metadata semantics"
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@ -1644,7 +1644,12 @@ aggregate_metadata_request:
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Metadata key and value pairs associated with the aggregate.
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Metadata key and value pairs associated with the aggregate.
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The maximum size for each metadata key and value pair is 255 bytes.
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The maximum size for each metadata key and value pair is 255 bytes.
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.. warning:: You should not change or unset the availability zone of an
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New keys will be added to existing aggregate metadata. For existing
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keys, if the value is ``null`` the entry is removed, otherwise the
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value is updated. Note that the special ``availability_zone`` metadata
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entry cannot be unset to ``null``.
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.. warning:: You should not change the availability zone of an
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aggregate when that aggregate has hosts which contain servers in it
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aggregate when that aggregate has hosts which contain servers in it
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since that may impact the ability for those servers to move to another
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since that may impact the ability for those servers to move to another
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host.
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host.
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