Example #1
0
func parseKeyValueOpts(opts opts.ListOpts) ([]KeyValuePair, error) {
	out := make([]KeyValuePair, opts.Len())
	for i, o := range opts.GetAll() {
		k, v, err := parsers.ParseKeyValueOpt(o)
		if err != nil {
			return nil, err
		}
		out[i] = KeyValuePair{Key: k, Value: v}
	}
	return out, nil
}
Example #2
0
func TestParseLxcConfOpt(t *testing.T) {
	opts := []string{"lxc.utsname=docker", "lxc.utsname = docker "}

	for _, o := range opts {
		k, v, err := parsers.ParseKeyValueOpt(o)
		if err != nil {
			t.FailNow()
		}
		if k != "lxc.utsname" {
			t.Fail()
		}
		if v != "docker" {
			t.Fail()
		}
	}
}
Example #3
0
func NewDeviceSet(root string, doInit bool, options []string) (*DeviceSet, error) {
	devicemapper.SetDevDir("/dev")

	devices := &DeviceSet{
		root:                  root,
		MetaData:              MetaData{Devices: make(map[string]*DevInfo)},
		dataLoopbackSize:      DefaultDataLoopbackSize,
		metaDataLoopbackSize:  DefaultMetaDataLoopbackSize,
		baseFsSize:            DefaultBaseFsSize,
		overrideUdevSyncCheck: DefaultUdevSyncOverride,
		filesystem:            "ext4",
		doBlkDiscard:          true,
		thinpBlockSize:        DefaultThinpBlockSize,
		deviceIdMap:           make([]byte, DeviceIdMapSz),
	}

	foundBlkDiscard := false
	for _, option := range options {
		key, val, err := parsers.ParseKeyValueOpt(option)
		if err != nil {
			return nil, err
		}
		key = strings.ToLower(key)
		switch key {
		case "dm.basesize":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			devices.baseFsSize = uint64(size)
		case "dm.loopdatasize":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			devices.dataLoopbackSize = size
		case "dm.loopmetadatasize":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			devices.metaDataLoopbackSize = size
		case "dm.fs":
			if val != "ext4" && val != "xfs" {
				return nil, fmt.Errorf("Unsupported filesystem %s\n", val)
			}
			devices.filesystem = val
		case "dm.mkfsarg":
			devices.mkfsArgs = append(devices.mkfsArgs, val)
		case "dm.mountopt":
			devices.mountOptions = joinMountOptions(devices.mountOptions, val)
		case "dm.metadatadev":
			devices.metadataDevice = val
		case "dm.datadev":
			devices.dataDevice = val
		case "dm.thinpooldev":
			devices.thinPoolDevice = strings.TrimPrefix(val, "/dev/mapper/")
		case "dm.blkdiscard":
			foundBlkDiscard = true
			devices.doBlkDiscard, err = strconv.ParseBool(val)
			if err != nil {
				return nil, err
			}
		case "dm.blocksize":
			size, err := units.RAMInBytes(val)
			if err != nil {
				return nil, err
			}
			// convert to 512b sectors
			devices.thinpBlockSize = uint32(size) >> 9
		case "dm.override_udev_sync_check":
			devices.overrideUdevSyncCheck, err = strconv.ParseBool(val)
			if err != nil {
				return nil, err
			}

		case "dm.use_deferred_removal":
			EnableDeferredRemoval, err = strconv.ParseBool(val)
			if err != nil {
				return nil, err
			}

		default:
			return nil, fmt.Errorf("Unknown option %s\n", key)
		}
	}

	// By default, don't do blk discard hack on raw devices, its rarely useful and is expensive
	if !foundBlkDiscard && (devices.dataDevice != "" || devices.thinPoolDevice != "") {
		devices.doBlkDiscard = false
	}

	if err := devices.initDevmapper(doInit); err != nil {
		return nil, err
	}

	return devices, nil
}