cinder/releasenotes/notes/compress-images-fed3e354d94b0845.yaml
Eric Harney 1e74f318d6 Compress images uploaded to Glance
When possible (based on the image format), compress
images that are uploaded to Glance.  For now, this is
done for the qcow2 format, but can be expanded to
other formats as needed.

This should be a performance win for some deployments,
consuming less network/storage at the expense of CPU.
An "image_compress_on_upload" option is provided to
disable this behavior for deployments that want to
prioritize minimal CPU usage, etc.

Closes-Bug: #1824821
Change-Id: I22bd2be6653bdc4e755ea8a9d8780e8e67b4485a
2019-07-17 08:08:34 -04:00

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YAML

---
features:
- |
When uploading qcow2 images to Glance, image data will be compressed. This
will generally result in less data transferred to Glance at the expense of
higher CPU usage. This behavior is controlled by the
"image_compress_on_upload" boolean option, which defaults to True.