Quobyte driver¶
The Quobyte volume driver enables storing Block Storage service volumes on a Quobyte storage back end. Block Storage service back ends are mapped to Quobyte volumes and individual Block Storage service volumes are stored as files on a Quobyte volume. Selection of the appropriate Quobyte volume is done by the aforementioned back end configuration that specifies the Quobyte volume explicitly.
Note
Note the dual use of the term volume in the context of Block Storage
service volumes and in the context of Quobyte volumes.
For more information see the Quobyte support webpage.
Supported operations¶
The Quobyte volume driver supports the following volume operations:
- Create, delete, attach, and detach volumes
- Secure NAS operation (Starting with Mitaka release secure NAS operation is optional but still default)
- Create and delete a snapshot
- Create a volume from a snapshot
- Extend a volume
- Clone a volume
- Copy a volume to image
- Generic volume migration (no back end optimization)
Note
When running VM instances off Quobyte volumes, ensure that the Quobyte Compute service driver has been configured in your OpenStack cloud.
Configuration¶
To activate the Quobyte volume driver, configure the corresponding
volume_driver parameter:
volume_driver = cinder.volume.drivers.quobyte.QuobyteDriver
The following table contains the configuration options supported by the Quobyte driver:
| Configuration option = Default value | Description |
|---|---|
quobyte_client_cfg = None |
(String) Path to a Quobyte Client configuration file. |
quobyte_mount_point_base = $state_path/mnt |
(String) Base dir containing the mount point for the Quobyte volume. |
quobyte_qcow2_volumes = True |
(Boolean) Create volumes as QCOW2 files rather than raw files. |
quobyte_sparsed_volumes = True |
(Boolean) Create volumes as sparse files which take no space. If set to False, volume is created as regular file. |
quobyte_volume_from_snapshot_cache = False |
(Boolean) Create a cache of volumes from merged snapshots to speed up creation of multiple volumes from a single snapshot. |
quobyte_volume_url = None |
(String) Quobyte URL to the Quobyte volume using e.g. a DNS SRV record (preferred) or a host list (alternatively) like quobyte://<DIR host1>, <DIR host2>/<volume name> |
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