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Colin Walters 42c60effbe pull: Support specifying exact commit to pull via branch@commit 
I don't know why we didn't do this a long time ago.  This extends the
pull API to allow grabbing a specific commit, and will set the branch
to it.  There's some support for this in the deploy engine, but there
are a lot of reasons to support it for raw pulls (such as subset
mirroring cases).

In fact I'm thinking we should also have the override-version logic
here too.

NOTE: One thing I debated here is inventing a new syntax on the
command line.  Git doesn't seem to have this functionality (probably
because it'd be rarely used). The '@' character at least doesn't
conflict with anything.

Anyways, I wanted this for some other test cases.  Without this,
writing tests that go between different commits is more awkward as one
must generate the content in one repo, then pull downstream, then
generate more content, then pull again.  But now I can just keep track
of commit IDs and do exactly what I want without synchronizing the
tests.
 		2016-02-14 10:12:26 -05:00
apidoc apidoc: Remove unnecessary srcdir != builddir workaround 2016-01-28 09:31:37 -05:00
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
docs Rewrite manual in mkdocs 2016-01-28 09:31:37 -05:00
libglnx@769522753c repo: Port -refs.c to openat() 2016-01-28 14:57:13 -05:00
man pull: Support specifying exact commit to pull via branch@commit 2016-02-14 10:12:26 -05:00
manual-tests manual-tests: New directory with custom test scripts 2014-02-14 18:16:37 -05:00
packaging packaging: Sync spec file with Fedora 2016-02-03 10:22:01 -05:00
src pull: Support specifying exact commit to pull via branch@commit 2016-02-14 10:12:26 -05:00
tests pull: Support specifying exact commit to pull via branch@commit 2016-02-14 10:12:26 -05:00
.gitignore Update .gitignore 2015-08-08 21:53:43 -04:00
.gitmodules bsdiff: change submodule location 2015-03-26 23:33:07 +01:00
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
GNUmakefile Add infrastructure for "make syntax-check" 2015-01-30 15:27:36 +01:00
Makefile-boot.am syntax-check: Remove empty lines at the end of file 2015-02-02 15:07:56 +01:00
Makefile-decls.am libostree: Add initial GRUB2 support 2014-10-16 14:15:00 -04:00
Makefile-libostree-defines.am build: ostree-gpg-verify-result.h is a public header, install it 2015-03-20 10:56:23 -04:00
Makefile-libostree.am build: 'make clean' removes parse-datetime.c 2016-02-07 14:56:21 +01:00
Makefile-man.am Add an `export` builtin, and API to write to libarchive 2016-02-14 09:53:01 -05:00
Makefile-ostree.am Add an `export` builtin, and API to write to libarchive 2016-02-14 09:53:01 -05:00
Makefile-otutil.am libotutil: Establish a place for GPG utilities 2015-05-01 10:20:34 -04:00
Makefile-switchroot.am Add support for mkinitcpio 2013-10-24 14:27:49 -04:00
Makefile-tests.am Add an `export` builtin, and API to write to libarchive 2016-02-14 09:53:01 -05:00
Makefile.am Import rofiles-fuse 2016-02-10 13:11:25 +01:00
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.md: Update to link to Read The Docs, describe a bit better 2016-02-08 14:35:24 +01:00
TODO Fix repeated words. 2015-01-30 15:27:36 +01:00
autogen.sh build: Make gtk-doc optional 2015-06-29 16:08:51 -04:00
cfg.mk build: exclude .sig files from syntax-check 2015-04-03 09:57:20 +02:00
configure.ac Import rofiles-fuse 2016-02-10 13:11:25 +01:00
maint.mk tests: prefix invocation of ostree with where missing 2015-11-16 11:07:55 +01:00
mkdocs.yml Rewrite manual in mkdocs 2016-01-28 09:31:37 -05:00
ostree.doap doap category infrastructure 2014-07-31 11:26:32 +02:00

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.

xdg-app 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.