Version: v1.36.0 Latest Latest

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Published: Sep 10, 2021 License: Apache-2.0 Imports: 22 Imported by: 2




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func Init

func Init(home string, options graphdriver.Options) (graphdriver.Driver, error)

Init returns a new BTRFS driver. An error is returned if BTRFS is not supported.


type Driver

type Driver struct {
	// contains filtered or unexported fields

Driver contains information about the filesystem mounted.

func (*Driver) AdditionalImageStores

func (d *Driver) AdditionalImageStores() []string

AdditionalImageStores returns additional image stores supported by the driver

func (*Driver) Cleanup

func (d *Driver) Cleanup() error

Cleanup unmounts the home directory.

func (*Driver) Create

func (d *Driver) Create(id, parent string, opts *graphdriver.CreateOpts) error

Create the filesystem with given id.

func (*Driver) CreateFromTemplate

func (d *Driver) CreateFromTemplate(id, template string, templateIDMappings *idtools.IDMappings, parent string, parentIDMappings *idtools.IDMappings, opts *graphdriver.CreateOpts, readWrite bool) error

CreateFromTemplate creates a layer with the same contents and parent as another layer.

func (*Driver) CreateReadWrite

func (d *Driver) CreateReadWrite(id, parent string, opts *graphdriver.CreateOpts) error

CreateReadWrite creates a layer that is writable for use as a container file system.

func (*Driver) Exists

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

Exists checks if the id exists in the filesystem.

func (*Driver) Get

func (d *Driver) Get(id string, options graphdriver.MountOpts) (string, error)

Get the requested filesystem id.

func (*Driver) Metadata

func (d *Driver) Metadata(id string) (map[string]string, error)

Metadata returns empty metadata for this driver.

func (*Driver) Put

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

Put is not implemented for BTRFS as there is no cleanup required for the id.

func (*Driver) ReadWriteDiskUsage added in v1.25.0

func (d *Driver) ReadWriteDiskUsage(id string) (*directory.DiskUsage, error)

ReadWriteDiskUsage returns the disk usage of the writable directory for the ID. For BTRFS, it queries the subvolumes path for this ID.

func (*Driver) Remove

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

Remove the filesystem with given id.

func (*Driver) Status

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

Status returns current driver information in a two dimensional string array. Output contains "Build Version" and "Library Version" of the btrfs libraries used. Version information can be used to check compatibility with your kernel.

func (*Driver) String

func (d *Driver) String() string

String prints the name of the driver (btrfs).

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