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Colin Walters 5c940987e7 Add support for more selective pruning 
There are use cases for having a single repo with branches
with different lifecycles; a simple example of what I was
trying to do in CentOS Atomic Host work is have "stable"
and "devel" branches, were we want to prune devel, but
retain *all* of stable.

This patch is split into two parts - first we add a low level "delete all
objects not in this set" API, and change the current prune API
to use this.

Next, we move more logic into the "ostree prune" command. This paves the way for
demonstrating how more sophisticated algorithms/logic could be developed outside
of the ostree core.

Also, the --keep-younger-than logic already lived in the commandline, so it
makes sense to keep extending it there.

Closes: https://github.com/ostreedev/ostree/issues/604

Closes: #646
Approved by: jlebon
2017-01-19 16:28:00 +00:00
apidoc Add support for more selective pruning 2017-01-19 16:28:00 +00:00
bsdiff@1edf9f6568 bsdiff: change submodule location 2015-03-26 23:33:07 +01:00
build-aux Add infrastructure for "make syntax-check" 2015-01-30 15:27:36 +01:00
buildutil Terminate individual tests after (10 * $TEST_TIMEOUT_FACTOR) minutes 2016-12-01 18:22:51 +00:00
contrib/golang contrib: indent golang code using only tabs instead of both tabs and spaces 2016-04-07 12:25:24 +00:00
docs docs: Fix ostree.version -> version 2016-12-23 15:24:56 +00:00
libglnx@abd37a4790 libglnx: Bump to master (for -fsanitize fixes) 2016-10-28 17:47:50 +00:00
man repo: Add unconfigured-state to remote config options 2016-12-09 17:46:54 +00:00
manual-tests tests/delta-crosscheck: Add missing --from 2016-07-29 14:30:42 +00:00
packaging Final excision of libgsystem dependency 2016-08-09 15:36:09 +00:00
src Add support for more selective pruning 2017-01-19 16:28:00 +00:00
tests Add support for more selective pruning 2017-01-19 16:28:00 +00:00
.dir-locals.el .dir-locals.el: Standard Emacs indentation config 2017-01-12 16:09:34 +00:00
.gitmodules bsdiff: change submodule location 2015-03-26 23:33:07 +01:00
.redhat-ci.Dockerfile ci: Rebase to f25 2016-12-12 16:00:45 +00:00
.redhat-ci.yml ci: Combine UBSAN and ASAN by default 2016-12-09 18:05:53 +00:00
.travis.yml travis-ci: Enable stretch (the future Debian 9), replacing unstable 2016-11-29 14:11:50 +00:00
autogen.sh libglnx porting: Migrate to new tempfile code 2016-07-29 19:02:41 +00:00
cfg.mk small cleanups 2016-04-08 18:43:18 +00:00
configure.ac Release 2016.15 2016-12-12 17:19:01 +00:00
CONTRIBUTING.md Rewrite manual in mkdocs 2016-01-28 09:31:37 -05:00
COPYING COPYING: Update to latest FSF with current address 2014-01-16 10:22:30 -05:00
git.mk Use git.mk 2016-04-07 12:49:40 +00:00
GNUmakefile Add infrastructure for "make syntax-check" 2015-01-30 15:27:36 +01:00
maint.mk tests: prefix invocation of ostree with where missing 2015-11-16 11:07:55 +01:00
Makefile-boot.am Move ostree-* executables to /usr/lib/ostree 2016-08-11 14:04:59 +00:00
Makefile-decls.am build-sys: Minor makefile tweaks 2017-01-04 16:32:11 +00:00
Makefile-libostree-defines.am libostree: mark ostree_repo_checkout_tree_at as deprecated 2016-07-30 11:24:52 +00:00
Makefile-libostree.am fetcher: Move high level functions into "fetcher-util" 2017-01-04 16:32:11 +00:00
Makefile-man.am build: Actually distribute man page XML source 2016-09-01 19:23:49 +00:00
Makefile-ostree.am Split trivial-httpd into separate binary 2017-01-04 16:32:11 +00:00
Makefile-otutil.am lib: Use sd_journal directly (optionally) 2016-06-21 18:24:17 +00:00
Makefile-switchroot.am build: clean up ostree-remount if building without systemd 2016-11-29 14:11:50 +00:00
Makefile-tests.am Make corrupt-repo-ref.js executable 2017-01-19 13:54:59 +00:00
Makefile.am build: Set --enable-man during distcheck 2016-09-01 19:03:23 +00:00
mkdocs.yml docs: Add a section on repository management 2016-03-29 14:10:24 +00:00
ostree.doap doap category infrastructure 2014-07-31 11:26:32 +02:00
README-historical.md README: Just link to wiki, move most of it to README-historical.md 2014-01-20 18:00:09 -05:00
README.md README: Fix broken link 2016-07-14 20:32:41 +00:00
TODO Fix repeated words. 2015-01-30 15:27:36 +01:00

README.md

OSTree

New! See the docs online at Read The Docs (OSTree)

OSTree is a tool that combines a "git-like" model for committing and downloading bootable filesystem trees, along with a layer for deploying them and managing the bootloader configuration.

OSTree is like git in that it checksums individual files and has a content-addressed-object store. It's unlike git in that it "checks out" the files via hardlinks, and they should thus be immutable. Therefore, another way to think of OSTree is that it's just a more polished version of Linux VServer hardlinks.

Features:

  • Atomic upgrades and rollback for the system
  • Replicating content incrementally over HTTP via GPG signatures and "pinned TLS" support
  • Support for parallel installing more than just 2 bootable roots
  • Binary history on the server side (and client)
  • Introspectable shared library API for build and deployment systems

This last point is important - you should think of the OSTree command line as effectively a "demo" for the shared library. The intent is that package managers, system upgrade tools, container build tools and the like use OSTree as a "deduplicating hardlink store".

Projects using OSTree

rpm-ostree is a tool that uses OSTree as a shared library, and supports committing RPMs into an OSTree repository, and deploying them on the client. This is appropriate for "fixed purpose" systems. There is in progress work for more sophisticated hybrid models, deeply integrating the RPM packaging with OSTree.

Project Atomic uses rpm-ostree to provide a minimal host for Docker formatted Linux containers. Replicating a base immutable OS, then using Docker for applications meshes together two different tools with different tradeoffs.

flatpak uses OSTree for desktop application containers.

GNOME Continuous is a custom build system designed for OSTree, using OpenEmbedded in concert with a custom build system to do continuous delivery from hundreds of git repositories.

Building

Releases are available as GPG signed git tags, and most recent versions support extended validation using git-evtag.

However, in order to build from a git clone, you must update the submodules. If you're packaging OSTree and want a tarball, I recommend using a "recursive git archive" script. There are several available online; this code in OSTree is an example.

Once you have a git clone or recursive archive, building is the same as almost every autotools project:

env NOCONFIGURE=1 ./autogen.sh
./configure --prefix=...
make
make install DESTDIR=/path/to/dest

More documentation

New! See the docs online at Read The Docs (OSTree)

Some more information is available on the old wiki page: https://wiki.gnome.org/Projects/OSTree

Contributing

See Contributing.