README
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Layer0 Graph Driver
Layer0 implemenation piggy backs on existing overlay graphdriver implementation to provide persistent storage for the uppermost/writeable layer in the container rootfs. The persistent storage is derived from one of the OSD volume drivers.
To use this as the graphdriver in Docker with aws as the backend volume provider:
DOCKER_STORAGE_OPTIONS= -s layer0 --storage-opt layer0.volume_driver=aws
Documentation
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Index ¶
- Constants
- func Init(home string, options []string, uidMaps, gidMaps []idtools.IDMap) (graphdriver.Driver, error)
- type Layer0
- func (l *Layer0) ApplyDiff(id string, parent string, diff archive.Reader) (size int64, err error)
- func (l *Layer0) Create(id string, parent string, mountLabel string, storageOpts map[string]string) error
- func (l *Layer0) Exists(id string) bool
- func (l *Layer0) Get(id string, mountLabel string) (string, error)
- func (l *Layer0) GetMetadata(id string) (map[string]string, error)
- func (l *Layer0) Put(id string) error
- func (l *Layer0) Remove(id string) error
- type Layer0Vol
Constants ¶
View Source
const ( // Name of the driver Name = "layer0" // Type of the driver Type = api.DriverType_DRIVER_TYPE_GRAPH // Layer0VolumeDriver constant Layer0VolumeDriver = "layer0.volume_driver" )
Layer0Graphdriver options. This should be passed in as a st
Variables ¶
This section is empty.
Functions ¶
Types ¶
type Layer0 ¶
type Layer0 struct {
sync.Mutex
// Driver is an implementation of GraphDriver. Only select methods are overridden
graphdriver.Driver
// contains filtered or unexported fields
}
Layer0 implements the graphdriver interface
func (*Layer0) ApplyDiff ¶
ApplyDiff extracts the changeset between the specified layer and its parent
func (*Layer0) Create ¶
func (l *Layer0) Create(id string, parent string, mountLabel string, storageOpts map[string]string) error
Create creates a new and empty filesystem layer
func (*Layer0) GetMetadata ¶
GetMetadata returns key-value pairs
Source Files
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