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Allow external volume drivers to host anonymous volumes and copy existing data from image.

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Signed-off-by: Stephen Rust <srust@blockbridge.com>
This commit is contained in:
Stephen Rust 2016-01-08 13:19:25 -05:00
parent 05de2aadff
commit 7c70ad058f
4 changed files with 4 additions and 52 deletions
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2
daemon/create.go
View file

@ -105,7 +105,7 @@ func (daemon *Daemon) create(params types.ContainerCreateConfig) (retC *containe
}
}()
if err := daemon.createContainerPlatformSpecificSettings(container, params.Config, params.HostConfig, img); err != nil {
if err := daemon.createContainerPlatformSpecificSettings(container, params.Config, params.HostConfig); err != nil {
return nil, err
}

16
daemon/create_unix.go
View file

@ -9,15 +9,13 @@ import (
"github.com/Sirupsen/logrus"
"github.com/docker/docker/container"
derr "github.com/docker/docker/errors"
"github.com/docker/docker/image"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/volume"
containertypes "github.com/docker/engine-api/types/container"
"github.com/opencontainers/runc/libcontainer/label"
)
// createContainerPlatformSpecificSettings performs platform specific container create functionality
func (daemon *Daemon) createContainerPlatformSpecificSettings(container *container.Container, config *containertypes.Config, hostConfig *containertypes.HostConfig, img *image.Image) error {
func (daemon *Daemon) createContainerPlatformSpecificSettings(container *container.Container, config *containertypes.Config, hostConfig *containertypes.HostConfig) error {
if err := daemon.Mount(container); err != nil {
return err
}
@ -42,17 +40,7 @@ func (daemon *Daemon) createContainerPlatformSpecificSettings(container *contain
return derr.ErrorCodeMountOverFile.WithArgs(path)
}
volumeDriver := hostConfig.VolumeDriver
if destination != "" && img != nil {
if _, ok := img.ContainerConfig.Volumes[destination]; ok {
// check for whether bind is not specified and then set to local
if _, ok := container.MountPoints[destination]; !ok {
volumeDriver = volume.DefaultDriverName
}
}
}
v, err := daemon.volumes.CreateWithRef(name, volumeDriver, container.ID, nil)
v, err := daemon.volumes.CreateWithRef(name, hostConfig.VolumeDriver, container.ID, nil)
if err != nil {
return err
}

11
daemon/create_windows.go
View file

@ -4,14 +4,13 @@ import (
"fmt"
"github.com/docker/docker/container"
"github.com/docker/docker/image"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/volume"
containertypes "github.com/docker/engine-api/types/container"
)
// createContainerPlatformSpecificSettings performs platform specific container create functionality
func (daemon *Daemon) createContainerPlatformSpecificSettings(container *container.Container, config *containertypes.Config, hostConfig *containertypes.HostConfig, img *image.Image) error {
func (daemon *Daemon) createContainerPlatformSpecificSettings(container *container.Container, config *containertypes.Config, hostConfig *containertypes.HostConfig) error {
for spec := range config.Volumes {
mp, err := volume.ParseMountSpec(spec, hostConfig.VolumeDriver)
@ -31,14 +30,6 @@ func (daemon *Daemon) createContainerPlatformSpecificSettings(container *contain
}
volumeDriver := hostConfig.VolumeDriver
if mp.Destination != "" && img != nil {
if _, ok := img.ContainerConfig.Volumes[mp.Destination]; ok {
// check for whether bind is not specified and then set to local
if _, ok := container.MountPoints[mp.Destination]; !ok {
volumeDriver = volume.DefaultDriverName
}
}
}
// Create the volume in the volume driver. If it doesn't exist,
// a new one will be created.

27
integration-cli/docker_cli_start_volume_driver_unix_test.go
View file

@ -296,33 +296,6 @@ func hostVolumePath(name string) string {
return fmt.Sprintf("/var/lib/docker/volumes/%s", name)
}
func (s *DockerExternalVolumeSuite) TestExternalVolumeDriverNamedCheckBindLocalVolume(c *check.C) {
err := s.d.StartWithBusybox()
c.Assert(err, checker.IsNil)
expected := s.server.URL
dockerfile := fmt.Sprintf(`FROM busybox:latest
RUN mkdir /nobindthenlocalvol
RUN echo %s > /nobindthenlocalvol/test
VOLUME ["/nobindthenlocalvol"]`, expected)
img := "test-checkbindlocalvolume"
_, err = buildImageWithOutInDamon(s.d.sock(), img, dockerfile, true)
c.Assert(err, checker.IsNil)
out, err := s.d.Cmd("run", "--rm", "--name", "test-data-nobind", "-v", "external-volume-test:/tmp/external-volume-test", "--volume-driver", "test-external-volume-driver", img, "cat", "/nobindthenlocalvol/test")
c.Assert(err, checker.IsNil)
c.Assert(out, checker.Contains, expected)
c.Assert(s.ec.activations, checker.Equals, 1)
c.Assert(s.ec.creations, checker.Equals, 1)
c.Assert(s.ec.removals, checker.Equals, 1)
c.Assert(s.ec.mounts, checker.Equals, 1)
c.Assert(s.ec.unmounts, checker.Equals, 1)
}
// Make sure a request to use a down driver doesn't block other requests
func (s *DockerExternalVolumeSuite) TestExternalVolumeDriverLookupNotBlocked(c *check.C) {
specPath := "/etc/docker/plugins/down-driver.spec"