Ideally lvm2 would be used to create/manage the thin-pool volume that is
then handed to docker to exclusively create/manage the thin and thin
snapshot volumes needed for it's containers. Managing the thin-pool
outside of docker makes for the most feature-rich method of having
docker utilize device mapper thin provisioning as the backing storage
for docker's containers. lvm2-based thin-pool management feature
highlights include: automatic or interactive thin-pool resize support,
dynamically change thin-pool features, automatic thinp metadata checking
when lvm2 activates the thin-pool, etc.
Docker will not activate/deactivate the specified thin-pool device but
it will exclusively manage/create thin and thin snapshot volumes in it.
Docker will not take ownership of the specified thin-pool device unless
it has 0 data blocks used and a transaction id of 0. This should help
guard against using a thin-pool that is already in use.
Also fix typos in setupBaseImage() relative to the thin volume type of
the base image.
Docker-DCO-1.1-Signed-off-by: Mike Snitzer <snitzer@redhat.com> (github: snitm)
Otherwise udev can unecessarily execute various rules (and issue
scanning IO, etc) against the thin-pool -- which can never be a
top-level device.
Docker-DCO-1.1-Signed-off-by: Mike Snitzer <snitzer@redhat.com> (github: snitm)
Took care of some review comments from crosbymichael.
v2:
- Return "err = nil" if file deviceset-metadata file does not exist.
- Use json.Decoder() interface for loading deviceset metadata.
v3:
- Reverted back to json marshal interface in loadDeviceSetMetaData().
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
I noticed a few things that were bugging me in the output
of the integration-cli tests.
- one of the tests used println to stdout so we had garage sent to the screen
- some of the test, in their final log message, didn't include the name of
the group/file e.g. daemon - run,iptables was just run,iptables
And yes, I noticed this because I'm anal :-) but also because we should keep
the output of the tests as clean as possible so its easy to spot it when
things go bad.
Signed-off-by: Doug Davis <dug@us.ibm.com>
The Docker Governance Advisory Board (DGAB) met for the first time Tue 10/21/2014.
Among other topics, the DGAB reviewed and refreshed the Docker Project Statement of Direction.
(Sven added from the Pull Req #9055)
Docker-DCO-1.1-Signed-off-by: Scott Johnston <scott.johnston@docker.com> (github: j0hnst0n)
Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>
Current implementation is hard to reason about because of trying to mix
unix/tcp server implementations, even though they are quite different.
This cleans that up.
Also makes it possible to create and manage a new API server easily,
e.g. for adding an introspection socket to a container.
Built in such a way as to allow a non-HTTP server to work as well, such
as libchan.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Linking to the docs readme to help would-be contributors discover the style guide and docs contribution guidelines.
Docker-DCO-1.1-Signed-off-by: Fred Lifton <fred.lifton@docker.com> (github: fredlf)
Running parseVolumesFromSpec on all VolumesFrom specs before initialize
any mounts endures that we don't leave container.Volumes in an
inconsistent (partially initialized) if one of out mount groups is not
available (e.g. the container we're trying to mount from does not
exist).
Keeping container.Volumes in a consistent state ensures that next time
we Start() the container, it'll run prepareVolumes() again.
The attached test demonstrates that when a container fails to start due
to a missing container specified in VolumesFrom, it "remembers" a Volume
that worked.
Fixes: #8726
Signed-off-by: Thomas Orozco <thomas@orozco.fr>
Mike Snitzer