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| author | Colin Walters <walters@verbum.org> | 2016-07-19 10:24:18 -0400 |
|---|---|---|
| committer | Atomic Bot <atomic-devel@projectatomic.io> | 2016-07-19 17:44:32 +0000 |
| commit | d49d42b983483f990460f64af59b7d6b9266f058 (patch) | |
| tree | ea6e8179d64f8d69bf3cd479281608d40071735e /docs | |
| parent | 29451a39994ba54c2d41887b84342af9e3632b19 (diff) | |
| download | ostree-d49d42b983483f990460f64af59b7d6b9266f058.tar.gz | |
docs/formats: Elaborate a bit on delta from NULL usage
See discussion on ostree-list.
Closes: #402
Approved by: gatispaeglis
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/manual/formats.md | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/docs/manual/formats.md b/docs/manual/formats.md index 87d0005f..e3fe00e1 100644 --- a/docs/manual/formats.md +++ b/docs/manual/formats.md @@ -79,7 +79,10 @@ concept of a "static delta". These deltas are targeted to be a delta between two specific commit objects, including "bsdiff" and "rsync-style" deltas within a content object. Static deltas also support `from NULL`, where the client can -more efficiently download a commit object from scratch. +more efficiently download a commit object from scratch - this is +mostly useful when using OSTree for containers, rather than OS images. +For OS images, one tends to download an installer ISO or qcow2 image +which is a single file that contains the tree data already. Effectively, we're spending server-side storage (and one-time compute cost), and gaining efficiency in client network bandwidth. |