package aufs

import "github.com/docker/docker/daemon/graphdriver/aufs"

Index ¶

• Constants
• Variables
• func Init(root string, options []string) (graphdriver.Driver, error)
• func Unmount(target string) error
• type Driver
• func (a *Driver) ApplyDiff(id, parent string, diff archive.ArchiveReader) (size int64, err error)
• func (a *Driver) Changes(id, parent string) ([]archive.Change, error)
• func (a *Driver) Cleanup() error
• func (a *Driver) Create(id, parent string) error
• func (a *Driver) Diff(id, parent string) (archive.Archive, error)
• func (a *Driver) DiffSize(id, parent string) (size int64, err error)
• func (a *Driver) Exists(id string) bool
• func (a *Driver) Get(id, mountLabel string) (string, error)
• func (a *Driver) Migrate(pth string, setupInit func(p string) error) error
• func (a *Driver) Put(id string) error
• func (a *Driver) Remove(id string) error
• func (a *Driver) Status() [][2]string
• func (*Driver) String() string

Constants ¶

const MsRemount = 0

Variables ¶

var (
	ErrAufsNotSupported = fmt.Errorf("AUFS was not found in /proc/filesystems")
)

Functions ¶

func Init ¶

func Init(root string, options []string) (graphdriver.Driver, error)

New returns a new AUFS driver. An error is returned if AUFS is not supported.

func Unmount ¶

func Unmount(target string) error

Types ¶

type Driver ¶

type Driver struct {
	sync.Mutex // Protects concurrent modification to active
	// contains filtered or unexported fields
}

func (*Driver) ApplyDiff ¶

func (a *Driver) ApplyDiff(id, parent string, diff archive.ArchiveReader) (size int64, err error)

ApplyDiff extracts the changeset from the given diff into the layer with the specified id and parent, returning the size of the new layer in bytes.

func (*Driver) Changes ¶

func (a *Driver) Changes(id, parent string) ([]archive.Change, error)

Changes produces a list of changes between the specified layer and its parent layer. If parent is "", then all changes will be ADD changes.

func (*Driver) Cleanup ¶

func (a *Driver) Cleanup() error

During cleanup aufs needs to unmount all mountpoints

func (*Driver) Create ¶

func (a *Driver) Create(id, parent string) error

Three folders are created for each id mnt, layers, and diff

func (*Driver) Diff ¶

func (a *Driver) Diff(id, parent string) (archive.Archive, error)

Diff produces an archive of the changes between the specified layer and its parent layer which may be "".

func (*Driver) DiffSize ¶

func (a *Driver) DiffSize(id, parent string) (size int64, err error)

DiffSize calculates the changes between the specified id and its parent and returns the size in bytes of the changes relative to its base filesystem directory.

func (*Driver) Exists ¶

func (a *Driver) Exists(id string) bool

Exists returns true if the given id is registered with this driver

func (*Driver) Get ¶

func (a *Driver) Get(id, mountLabel string) (string, error)

Return the rootfs path for the id This will mount the dir at it's given path

func (*Driver) Migrate ¶

func (a *Driver) Migrate(pth string, setupInit func(p string) error) error

Migrate existing images and containers from docker < 0.7.x

The format pre 0.7 is for docker to store the metadata and filesystem content in the same directory. For the migration to work we need to move Image layer data from /var/lib/docker/graph/<id>/layers to the diff of the registered id.

Next we need to migrate the container's rw layer to diff of the driver. After the contents are migrated we need to register the image and container ids with the driver.

For the migration we try to move the folder containing the layer files, if that fails because the data is currently mounted we will fallback to creating a symlink.

func (*Driver) Put ¶

func (a *Driver) Put(id string) error

func (*Driver) Remove ¶

func (a *Driver) Remove(id string) error

Unmount and remove the dir information

func (*Driver) Status ¶

func (a *Driver) Status() [][2]string

func (*Driver) String ¶

func (*Driver) String() string

Source Files ¶

aufs.go dirs.go migrate.go mount.go mount_unsupported.go