Cinder合入L3版本BP简要分析

BP	Description		Patch
migration-improvement	There are several work items to do in order to make the current migration more stable and robust. https://etherpad.openstack.org/p/volume-migration-improvement Volume state Ceilometer notification Support volume preservation feature for cinder assisted volume migration		https://review.openstack.org/#/c/186312/ https://review.openstack.org/#/c/204953 https://review.openstack.org/#/c/189547 https://review.openstack.org/#/c/189614 (This one is abandoned) https://review.openstack.org/#/c/195443
assisted-snapshot-improvements	Cinder part of volume snapshot improvements 1) Add processing to update_snapshot_status API for new fields   2) Add new fields to the update_snapshot_status call made by Nova   4) Add support for compatibility with pre-liberty Nova   5) Add testcases   6) Fixed test_glusterfs testcases that were failing due to changes      in remotefs code by this patch   7) Refactored _delete_snapshot_online into pre, do and post steps		https://review.openstack.org/#/c/172808/ - merge conflict https://review.openstack.org/#/c/203979
Support clone_image from Glance cinder backend	This adds an implementation of clone_image which offloads  the image copy when the image is stored in Glance Cinder backend.  It uses "create_clone_volume" method to create a new volume  from an image that is placed on a cinder volume. In addition, if use_cinder_backend_for_image_upload is set to  True, upload-to-image in raw format will create a cloned volume  and register its location to the image service. This enables volume data copy offloading (or CoW) from/to Glance images.  Also useful for sharing volume data using Glance ACL feature.		Generic Image Caching Two reviewers: thingee,jungleboyj https://review.openstack.org/#/c/201754/22 https://review.openstack.org/#/c/213346/1 https://review.openstack.org/#/c/195795/
generic-volume-migration	Currently, cinder supports these 3ways for volume migration. - Cinder storage driver - Cinder volume manager - Nova compute The purpose of this bluprint is introduce a mechanism to handle sparse  copy option properly into Cinder assisted volume migration. This patch changes the generic volume migration logic to support non-attachable volumes.		Generic volume migration improvement Two reviewers: geguileo https://review.openstack.org/#/c/187270/
non-eventlet-wsgi-app	Implement cinder API WSGI application under Apache/Nginx		Allow Cinder-api to run under apache/nginx Two reviewers: smcginnis https://review.openstack.org/207020 https://review.openstack.org/200551
capacity-headroom	The proposol calculates virtual free capacity for pool and sum total for the backend which support thin provisioning. It will then notify various capacity info to ceilometer service.		Capacity headroom Two reviewers: xyang, geguileo https://review.openstack.org/206923
Incremental backup improvements for L	Incremental backup improvements for L 1. Add 'is_incremental=True' and 'has_dependent_backups=True/False' to response body of querying. 2. Add parent_id to notification system. Since we need to get volume has_dependent_backups value when querying volume detail list, to reduce the performance impact, add index to parent_id column in backup table.		Incremental backup improvements Two reviewers: thingee, geguileo, e0ne https://review.openstack.org/#/c/188328/
support-import-export-snapshots	Currently cinder support import/export volume function.  Import/export snapshots function could be an complement for the function of import/export volume. Implement function to manage/unmanage snapshots 1. Add snapshots manage action in contrib api and unmanage action in API extension. 2. Implement manage_existing_snapshot in manager and flow to import existing snapshots. 3. Add manage/unmanage support in the LVM driver		Manage/unmanage snapshots - merge conflict Two reviewers: thingee, e0ne https://review.openstack.org/#/c/144590/ https://blueprints.launchpad.net/cinder/+spec/support-import-export-snapshots
Add pagination to snapshots	Add pagination to snapshots Currently snapshot list does not provide pagination like volume does. This patch adds pagination for snapshots in the same way that volume does, using marker, limit, sort_keys and sort_dirs.		Add Pagination to backups Two reviewers: e0ne,jungleboyj https://review.openstack.org/195071