This separates out the directory as returned from the graphdriver (the
"base" fs) from the root filesystem of the live container. This is
necessary as the "diff" operation needs access to the base filesystem
without all the mounts that the running container needs (/.dockerinit,
volumes, etc).
We change container in the following way:
Container.RootfsPath() returns the the directory which will be used as
the root in a running container. It is always of the form
"/var/lib/docker/container/<id>/root" and is a private bind mount to
the base filesystem. It is only available while the container is running.
Container.BasefsPath() returns the raw directory from the graph driver
without the container runtime mounts. It is availible whenever the
container is mounted (in between a container.Mount()/Unmount() pair,
which are properly refcounted).
This fixes issue #3840
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
This was deprecated already and all it did was call Mount().
The use of this was a bit confusing since we need to pair Mount/Unmount
calls which wasn't obvious with "EnsureMounted".
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
This makes all users of Put() have a corresponding call
to Get() which means we will be able to track whether
any particular ID is in use and if not unmount it.
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
* Jobs return an integer status instead of a string
* Status convention mimics unix process execution: 0=success, 1=generic error, 127="no such command"
* Stdout and Stderr support multiple thread-safe data receivers and ring buffer filtering
Johan Euphrosine