var (
	DefaultDataLoopbackSize     int64  = 100 * 1024 * 1024 * 1024
	DefaultMetaDataLoopbackSize int64  = 2 * 1024 * 1024 * 1024
	DefaultBaseFsSize           uint64 = 100 * 1024 * 1024 * 1024
	DefaultThinpBlockSize       uint32 = 128 // 64K = 128 512b sectors
	DefaultUdevSyncOverride     bool   = false
	MaxDeviceId                 int    = 0xffffff // 24 bit, pool limit
	DeviceIdMapSz               int    = (MaxDeviceId + 1) / 8
	// We retry device removal so many a times that even error messages
	// will fill up console during normal operation. So only log Fatal
	// messages by default.
	DMLogLevel                   int  = devicemapper.LogLevelFatal
	DriverDeferredRemovalSupport bool = false
	EnableDeferredRemoval        bool = false
)

type DevInfo struct {
	Hash          string `json:"-"`
	DeviceId      int    `json:"device_id"`
	Size          uint64 `json:"size"`
	TransactionId uint64 `json:"transaction_id"`
	Initialized   bool   `json:"initialized"`
	// contains filtered or unexported fields
}

type DevStatus struct {
	DeviceId            int
	Size                uint64
	TransactionId       uint64
	SizeInSectors       uint64
	MappedSectors       uint64
	HighestMappedSector uint64
}

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

type DeviceSet struct {
	MetaData   `json:"-"`
	sync.Mutex `json:"-"` // Protects Devices map and serializes calls into libdevmapper

	TransactionId uint64 `json:"-"`
	NextDeviceId  int    `json:"next_device_id"`

	Transaction `json:"-"`

	BaseDeviceUUID string //save UUID of base device
	// contains filtered or unexported fields
}

type DiskUsage struct {
	Used      uint64
	Total     uint64
	Available uint64
}

type Driver struct {
	*DeviceSet
	// contains filtered or unexported fields
}

type MetaData struct {
	Devices map[string]*DevInfo `json:"Devices"`
	// contains filtered or unexported fields
}

type Status struct {
	PoolName              string
	DataFile              string // actual block device for data
	DataLoopback          string // loopback file, if used
	MetadataFile          string // actual block device for metadata
	MetadataLoopback      string // loopback file, if used
	Data                  DiskUsage
	Metadata              DiskUsage
	SectorSize            uint64
	UdevSyncSupported     bool
	DeferredRemoveEnabled bool
}

type Transaction struct {
	OpenTransactionId uint64 `json:"open_transaction_id"`
	DeviceIdHash      string `json:"device_hash"`
	DeviceId          int    `json:"device_id"`
}