fs

Documentation

Index

• type DeviceId
• type DeviceInfo
• type DiskStats
• type DiskUsageCollector
  • func (du *DiskUsageCollector) GetStats(stats *container.Statistics, opts container.GetStatOpt) error
  • func (c *DiskUsageCollector) Init()
• type Fs
• type FsInfo
• type FsType
  • func (ft FsType) String() string
• type RealFsInfo
  • func (self *RealFsInfo) GetDirFsDevice(dir string) (*DeviceInfo, error)
  • func (self *RealFsInfo) GetDirUsage(dir string, timeout time.Duration) (uint64, error)
  • func (self *RealFsInfo) GetFsInfoForPath(mountSet map[string]struct{}, procfs string) ([]Fs, error)
  • func (self *RealFsInfo) GetGlobalFsInfo(procfs string) ([]Fs, error)

Types

type DeviceId

type DeviceId struct {
	Major uint
	Minor uint
}

Identifies device in system

type DeviceInfo

type DeviceInfo struct {
	Device string
	Major  uint
	Minor  uint
}

DeviceInfo holds device name and major and minor numbers

type DiskStats

type DiskStats struct {
	ReadsCompleted  uint64
	ReadsMerged     uint64
	SectorsRead     uint64
	ReadTime        uint64
	WritesCompleted uint64
	WritesMerged    uint64
	SectorsWritten  uint64
	WriteTime       uint64
	IoInProgress    uint64
	IoTime          uint64
	WeightedIoTime  uint64
}

DiskStats holds disk statistics

type DiskUsageCollector

type DiskUsageCollector struct {
	Mut       *sync.Mutex
	DiskUsage map[string]uint64
	// contains filtered or unexported fields
}

DiskUsageCollector collects container disk usage (based on `du -u` command) in the background

func (*DiskUsageCollector) GetStats

func (du *DiskUsageCollector) GetStats(stats *container.Statistics, opts container.GetStatOpt) error

GetFsStats returns filesystem statistics for a given container

func (*DiskUsageCollector) Init

func (c *DiskUsageCollector) Init()

type Fs

type Fs struct {
	DeviceInfo
	Type       FsType
	Capacity   uint64
	Free       uint64
	Available  uint64
	Inodes     uint64
	InodesFree uint64
	DiskStats  DiskStats
}

Fs holds information about device (name, minor, major), type, capacity, etc.

type FsInfo

type FsInfo interface {
	// Returns capacity and free space, in bytes, of all the ext2, ext3, ext4 filesystems on the host.
	GetGlobalFsInfo(procfs string) ([]Fs, error)

	// Returns capacity and free space, in bytes, of the set of mounts passed.
	GetFsInfoForPath(mountSet map[string]struct{}, procfs string) ([]Fs, error)

	// Returns number of bytes occupied by 'dir'.
	GetDirUsage(dir string, timeout time.Duration) (uint64, error)

	// Returns the block device info of the filesystem on which 'dir' resides.
	GetDirFsDevice(dir string) (*DeviceInfo, error)
}

FsInfo specifies methods to get filesystem information and statistics

type FsType

type FsType string

FsType is a docker filesystem type, supported: zfs, vfs and devicemapper

const (
	ZFS          FsType = "zfs"
	DeviceMapper FsType = "devicemapper"
	VFS          FsType = "vfs"
)

func (FsType) String

func (ft FsType) String() string

type RealFsInfo

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

RealFsInfo holds information about filesystem (e.g. partitions)

func (*RealFsInfo) GetDirFsDevice

func (self *RealFsInfo) GetDirFsDevice(dir string) (*DeviceInfo, error)

GetDirFsDevice returns the block device info of the filesystem on which 'dir' resides.

func (*RealFsInfo) GetDirUsage

func (self *RealFsInfo) GetDirUsage(dir string, timeout time.Duration) (uint64, error)

GetDirUsage returns number of bytes occupied by 'dir'.

func (*RealFsInfo) GetFsInfoForPath

func (self *RealFsInfo) GetFsInfoForPath(mountSet map[string]struct{}, procfs string) ([]Fs, error)

GetFsInfoForPath returns capacity and free space, in bytes, of the set of mounts passed.

func (*RealFsInfo) GetGlobalFsInfo

func (self *RealFsInfo) GetGlobalFsInfo(procfs string) ([]Fs, error)

GetGlobalFsInfo returns capacity and free space, in bytes, of all the ext2, ext3, ext4 filesystems on the host.