blockio

Documentation

Index

• Constants
• func SetContainerClass(cntnrDir string, class string) error
• func UpdateOciConfig(ignoreErrors bool) error
• type BlockDeviceInfo
• type Class
  • func GetClasses() []*Class
• type DevicesParameters

Constants

const (
	// ConfigModuleName is the configuration section of blockio class definitions
	ConfigModuleName = "blockio"
)

Functions

func SetContainerClass

func SetContainerClass(cntnrDir string, class string) error

SetContainerClass assigns a to a blockio class. cntnrDir is the cgroup directory of the container without mountpoint and controller (blkio) directory.

func UpdateOciConfig

func UpdateOciConfig(ignoreErrors bool) error

UpdateOciConfig converts the configuration in the opt variable into staticOciBlockIO

Types

type BlockDeviceInfo

type BlockDeviceInfo struct {
	Major   int64
	Minor   int64
	DevNode string
	Origin  string
}

BlockDeviceInfo holds information on a block device to be configured. As users can specify block devices using wildcards ("/dev/disk/by-id/*SSD*") BlockDeviceInfo.Origin is maintained for traceability: why this block device is included in configuration. BlockDeviceInfo.DevNode contains resolved device node, like "/dev/sda".

type Class

type Class struct {
	Name       string
	Parameters cgroups.OciBlockIOParameters
}

Class represents a block I/O class, a class name together with its associated parameters, essentially a single key/value pair from staticOciBlockIO below. This type is only used for querying all (static) block I/O classes in a sorting- form.

func GetClasses

func GetClasses() []*Class

GetClasses returns block I/O class names and associated parameters in sorted slice.

type DevicesParameters

type DevicesParameters struct {
	Devices           []string `json:",omitempty"`
	ThrottleReadBps   string   `json:",omitempty"`
	ThrottleWriteBps  string   `json:",omitempty"`
	ThrottleReadIOPS  string   `json:",omitempty"`
	ThrottleWriteIOPS string   `json:",omitempty"`
	Weight            string   `json:",omitempty"`
}

DevicesParameters defines Block IO parameters for a set of devices.