0cb7322ac6
Adds the support for FlexGroup pool using the NFS storage mode. The FlexGroup pool has a different view of aggregate capabilites, changing them by a list of elements, instead of an element. They are: `netapp_aggregate`, `netapp_raid_type`, `netapp_disk_type` and `netapp_hybrid_aggregate`. The `netapp_aggregate_used_percent` capability is an average of used percent of all FlexGroup's aggregates. The `utilization` capability is not calculated to FlexGroup pools, it is always set to default value. The driver cannot support consistency group with volumens that are over FlexGroup pools. ONTAP does not support FlexClone for file inside a FlexGroup pool, so the operations of clone volume, create snapshot and create volume from an image are implemented as the NFS generic driver. The driver with FlexGroup pools has the snapshot support disabled, requiring that setting the `nfs_snapshot_supprot` to true on the backend definition. This config is the same as the NFS generic driver. The driver image cache relies on FlexClone for file, so it is not applied for volumes over FlexGroup pools. It can use the core cache image, though. The QoS minimum is only enabled for FlexGroup pool if all nodes of the FlexGroup support it. Implements: blueprint netapp-flexgroup-support Change-Id: I507083c3e34e5a5cf1db9a3d1f6bef47bd51a9f8
33 lines
1.5 KiB
YAML
33 lines
1.5 KiB
YAML
---
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features:
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- |
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NetApp ONTAP driver: added support for FlexGroup pool using the NFS
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mode. There are several considerations for using the driver with it:
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1. The FlexGroup pool has a different view of aggregate capabilites,
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changing them by a list of elements, instead of a single element. They
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are ``netapp_aggregate``, ``netapp_raid_type``, ``netapp_disk_type`` and
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``netapp_hybrid_aggregate``. The ``netapp_aggregate_used_percent``
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capability is an average of used percent of all FlexGroup's aggregates.
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2. The ``utilization`` capability is not calculated to FlexGroup pools, it is
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always set to default of 50.
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3. The driver cannot support consistency group with volumes that are over
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FlexGroup pools.
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4. For volumes over the FlexGroup pool, the operations of clone volume,
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create snapshot and create volume from an image are implemented as the NFS
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generic driver. Hence, it does not rely on the ONTAP storage to perform
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those operations.
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5. A driver with FlexGroup pools has snapshot support disabled by default. To
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enable, you must set ``nfs_snapshot_support`` to true in the backend's configuration
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section of the cinder configuration file.
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6. The driver image cache is not applied for volumes over FlexGroup pools.
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It can use the core image cache for avoiding downloading twice, though.
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7. Given that the FlexGroup pool may be on several cluster nodes, the QoS minimum
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support is only enabled if all nodes support it.
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