mount

Documentation

Index

• type Collection
  • func NewCollection() *Collection
  • func (c *Collection) Add(mc *storage.Mount)
  • func (c *Collection) Get(vol string) (*storage.Mount, error)
  • func (c *Collection) Remove(vol string)
• type Counter
  • func NewCounter() *Counter
  • func (c *Counter) Add(mp string) int
  • func (c *Counter) AddCount(mp string, n int) int
  • func (c *Counter) Get(mp string) int
  • func (c *Counter) Sub(mp string) int

Types

type Collection

type Collection struct {
	// contains filtered or unexported fields
}

Collection is a data structure used for tracking live mounts.

func NewCollection

func NewCollection() *Collection

NewCollection properly initializes the Collection struct.

func (*Collection) Add

func (c *Collection) Add(mc *storage.Mount)

Add adds a mount to the collection. It is assumed that volplugin will manage the pre-existence of a live mount for the purposes of this function and this function WILL panic w/ error if given an existing mount as a duplicate.

func (*Collection) Get

func (c *Collection) Get(vol string) (*storage.Mount, error)

Get obtains the mount from the collection

func (*Collection) Remove

func (c *Collection) Remove(vol string)

Remove removes a mount from the mount collection.

type Counter

type Counter struct {
	// contains filtered or unexported fields
}

Counter implements a tracker for specific mounts.

Each volume is assigned an integer and that integer is atomically incremented. This is used to track how many mounts a specific volume has on a given host. This is used to control mounting and heal the system if necessary.

func NewCounter

func NewCounter() *Counter

NewCounter safely constructs a *Counter.

func (*Counter) Add

func (c *Counter) Add(mp string) int

Add increments the mount counter for a volume name and returns the new value.

func (*Counter) AddCount

func (c *Counter) AddCount(mp string, n int) int

AddCount adds n to the mount counter for a volume name and returns the new value.

func (*Counter) Get

func (c *Counter) Get(mp string) int

Get obtains the mount counter for a volume name.

func (*Counter) Sub

func (c *Counter) Sub(mp string) int

Sub subtracts from the mount counter and returns the new value. Sub will panic if mount counts go less than zero.