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William Manley 94e50ca5aa tests: Add basic tests for ostree-prepare-root 
These tests use unshare and mount to prepare a fake initrd/early boot
directory structure so we can then test ostree-prepare-root.

Things that are tested:

* Running in an initrd environment
* Running without initrd
* /var and /sysroot being mounted correctly
* /usr being mounted read-only

Things not tested (yet):

* Running as init - this could be accomplished by unsharing the pid
  namespace too.
* mounting/unmounting `/proc` if `/proc/cmdline` isn't available
* Persistent overlayfs for `/usr`
* Probably other things

The tests are basic but can be extended in the future as we do more work
on `ostree-prepare-root`.

These tests must be run as root as they require the ability to `mount`
and to `unshare` the mount namespace. Perhaps in the future we can use
user namespaces for this test once they are more widely available.

Closes: #403
Approved by: cgwalters
 		2016-08-02 19:07:25 +00:00
apidoc libostree: new function ostree_repo_checkout_at 2016-07-30 11:24:52 +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 tap-test: clean up temporary test directories as intended 2016-03-31 14:22:06 +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/formats: Elaborate a bit on delta from NULL usage 2016-07-19 17:44:32 +00:00
libglnx@c072ef1eba libglnx: bump to latest 2016-07-22 13:44:19 +00:00
man commit: Update manpage to reflect --editor 2016-05-25 18:37:47 +00:00
manual-tests tests/delta-crosscheck: Add missing --from 2016-07-29 14:30:42 +00:00
packaging build: Introduce --with-dracut=yesbutnoconf 2016-05-01 10:25:19 +00:00
src repo: Port to g_autoptr() rather than old style cleanup macros 2016-08-01 21:00:12 +00:00
tests tests: Add basic tests for ostree-prepare-root 2016-08-02 19:07:25 +00:00
.gitmodules bsdiff: change submodule location 2015-03-26 23:33:07 +01:00
.travis.yml Remove empty new lines at the EOF 2016-04-07 12:25:24 +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
GNUmakefile Add infrastructure for "make syntax-check" 2015-01-30 15:27:36 +01:00
Makefile-boot.am build: Override systemd unit directory for distcheck 2016-06-27 20:20:21 +00:00
Makefile-decls.am Makefile: Move to AM_DISTCHECK_CONFIGURE_FLAGS 2016-05-12 12:25:08 +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 libostree: mark ostree_repo_checkout_tree_at as deprecated 2016-07-30 11:24:52 +00:00
Makefile-man.am admin: Add an `unlock` command, and libostree API 2016-03-23 11:09:09 -04:00
Makefile-ostree.am lib: Use sd_journal directly (optionally) 2016-06-21 18:24:17 +00:00
Makefile-otutil.am lib: Use sd_journal directly (optionally) 2016-06-21 18:24:17 +00:00
Makefile-switchroot.am Add support for mkinitcpio 2013-10-24 14:27:49 -04:00
Makefile-tests.am tests: Add basic tests for ostree-prepare-root 2016-08-02 19:07:25 +00:00
Makefile.am libglnx porting: Migrate to new tempfile code 2016-07-29 19:02:41 +00:00
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
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 libglnx porting: Migrate to new tempfile code 2016-07-29 19:02:41 +00:00
git.mk Use git.mk 2016-04-07 12:49:40 +00:00
maint.mk tests: prefix invocation of ostree with where missing 2015-11-16 11:07:55 +01:00
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.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.