Add strip size support to rbd driver

Registered by Haomai Wang

Rbd support strip size for volume, in general, we would like to think the default value 4M is a proper for most of newers.

In the ceph side, the proper value of rbd strip size is depend on the configuration and backend of ceph. Just add a config called "rbd_store_chunk_size" like glance done.

Blueprint information

Status:
Complete
Approver:
None
Priority:
Undefined
Drafter:
Haomai Wang
Direction:
Needs approval
Assignee:
Haomai Wang
Definition:
Obsolete
Series goal:
None
Implementation:
Unknown
Milestone target:
None
Completed by
Sean McGinnis

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(smcginnis): Marking obsolete as this has been sitting out there for a long time. If this is still needed, please submit a new bp.

Gerrit topic: https://review.openstack.org/#q,topic:bp/add-rbd-strip-size,n,z

Addressed by: https://review.openstack.org/95652
    Add strip size support to rbd driver

The code has beened merged, I think it could be mark as implemented as to let other stackers know that this feature has been implemented.
---- ling-yun

(?)

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