resdiskloop

func (*T) CurrentSize ¶

func (t *T) CurrentSize(ctx context.Context) (int64, error)

CurrentSize implements resource.Sizer.

The size is read from the loop device when the file is set up, because that is what the resources above rest on: a file grown without a capacity refresh is larger than the device still exposing the size it was set up with.

func (*T) DriverID ¶

func (t *T) DriverID() driver.ID

func (*T) ExposedDevices ¶

func (t *T) ExposedDevices(ctx context.Context) device.L

func (*T) Info ¶

func (t *T) Info(ctx context.Context) (resource.InfoKeys, error)

func (*T) Label ¶

func (t *T) Label(_ context.Context) string

func (*T) Manifest ¶

func (t *T) Manifest() *manifest.T

Manifest exposes to the core the input expected by the driver.

func (*T) PoolCharge ¶

func (t *T) PoolCharge() (string, int64)

Label implements Label from resource.Driver interface, it returns a formatted short description of the Resource PoolCharge implements resource.PoolCharger. A loop file takes its size of the directory it is created in.

func (*T) ProvisionAsLeader ¶

func (t *T) ProvisionAsLeader(ctx context.Context) error

func (*T) Provisioned ¶

func (t *T) Provisioned(ctx context.Context) (provisioned.T, error)

func (*T) Resize ¶

func (t *T) Resize(ctx context.Context, to int64) error

Resize implements resource.Resizer.

func (*T) ResizePlan ¶

func (t *T) ResizePlan(ctx context.Context, to int64) (int64, error)

ResizePlan implements resource.Resizer.

A loop device rests on a file of a filesystem the object does not own, so there is no link below to ask for anything. What that filesystem cannot take is refused here, while the chain is still being planned, rather than by a write failing long after the resize was reported done.

func (*T) Start ¶

func (t *T) Start(ctx context.Context) error

func (*T) Status ¶

func (t *T) Status(ctx context.Context) status.T

func (*T) Stop ¶

func (t *T) Stop(ctx context.Context) error

func (*T) UnprovisionAsLeader ¶

func (t *T) UnprovisionAsLeader(ctx context.Context) error