20 lines
1.1 KiB
YAML
20 lines
1.1 KiB
YAML
---
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features:
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- |
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Microversion 2.49 brings device role tagging to the attach operation of
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volumes and network interfaces. Both network interfaces and volumes can now
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be attached with an optional ``tag`` parameter. The tag is then exposed to
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the guest operating system through the metadata API. Unlike the original
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device role tagging feature, tagged attach does not support the config
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drive. Because the config drive was never designed to be dynamic, it only
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contains device tags that were set at boot time with API 2.32. Any changes
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made to tagged devices with API 2.49 while the server is running will only
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be reflected in the metadata obtained from the metadata API. Because of
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metadata caching, changes may take up to ``metadata_cache_expiration`` to
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appear in the metadata API. The default value for
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``metadata_cache_expiration`` is 15 seconds.
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Tagged volume attachment is not supported for shelved-offloaded instances.
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Tagged device attachment (both volumes and network interfaces) is not
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supported for Cells V1 deployments.
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