2c52349cc5
Add a new config option "backup_ceph_max_snapshots" to only keep the last n snapshots of a volume backup on the source volume storage to save disk space. By default, the current behavior of keeping all snapshots is used, but can now be adjusted as requested. Commitbc9ab142dachanged the previous behavior of keeping only the last snapshot to keeping all snapshots of a backup. However, this can take up much more disk space on the source volume storage. If enabled, the driver checks the number of snapshots of a volume backup after successful creation of a new snapshot and removes older ones, so that only the n most recent snapshots are kept on the source storage. This change also creates a new special case which was not present before: If a user deletes at least n backup snapshots, the next incremental snapshot creation would fail (due to how RBD works). This will be handled by forcing a full backup instead. Therefore, this commit introduces a configurable tradeoff between required space on the source volume storage and a potentially longer backup time. Change-Id: Ief71e6e62ccc0654f4e1e71ccc53df66d5ffbfac Related-Bug: #1703011 Signed-off-by: Jan Hartkopf <jhartkopf@inovex.de> (cherry picked from commit03cbcd3cd0) (cherry picked from commit14912780b8)
Cinder Development Docs
Files under this directory tree are used for generating the documentation for the Cinder source code.
Developer documentation is built to: https://docs.openstack.org/cinder/latest/
Tools
- Sphinx
-
The Python Sphinx package is used to generate the documentation output. Information on Sphinx, including formatting information for RST source files, can be found in the Sphinx online documentation.
- Graphviz
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Some of the diagrams are generated using the
dotlanguage from Graphviz. See the Graphviz documentation for Graphviz and dot language usage information.
Building Documentation
Doc builds are performed using tox with the docs
target:
% cd ..
% tox -e docs