コード例 #1
0
func (d *idm) Mount(
	ctx types.Context,
	volumeID, volumeName string,
	opts *types.VolumeMountOpts) (string, *types.Volume, error) {

	opts.Preempt = d.preempt()

	fields := log.Fields{
		"volumeName": volumeName,
		"volumeID":   volumeID,
		"opts":       opts}
	ctx.WithFields(fields).Debug("mounting volume")

	mp, vol, err := d.IntegrationDriver.Mount(
		ctx.Join(d.ctx), volumeID, volumeName, opts)
	if err != nil {
		return "", nil, err
	}

	// if the volume has attachments assign the new mount point to the
	// MountPoint field of the first attachment element
	if len(vol.Attachments) > 0 {
		vol.Attachments[0].MountPoint = mp
	}

	d.incCount(volumeName)
	return mp, vol, err
}
コード例 #2
0
ファイル: docker.go プロジェクト: emccode/libstorage
// Mount will return a mount point path when specifying either a volumeName
// or volumeID.  If a overwriteFs boolean is specified it will overwrite
// the FS based on newFsType if it is detected that there is no FS present.
func (d *driver) Mount(
	ctx types.Context,
	volumeID, volumeName string,
	opts *types.VolumeMountOpts) (string, *types.Volume, error) {

	ctx.WithFields(log.Fields{
		"volumeName": volumeName,
		"volumeID":   volumeID,
		"opts":       opts}).Info("mounting volume")

	vol, err := d.volumeInspectByIDOrName(
		ctx, volumeID, volumeName,
		types.VolAttReqWithDevMapOnlyVolsAttachedToInstanceOrUnattachedVols,
		opts.Opts)
	if isErrNotFound(err) && d.volumeCreateImplicit() {
		var err error
		if vol, err = d.Create(ctx, volumeName, &types.VolumeCreateOpts{
			Opts: utils.NewStore(),
		}); err != nil {
			return "", nil, goof.WithError(
				"problem creating volume implicitly", err)
		}
	} else if err != nil {
		return "", nil, err
	}

	if vol == nil {
		return "", nil, goof.New("no volume returned or created")
	}

	client := context.MustClient(ctx)
	if len(vol.Attachments) == 0 || opts.Preempt {
		mp, err := d.getVolumeMountPath(vol.Name)
		if err != nil {
			return "", nil, err
		}

		ctx.Debug("performing precautionary unmount")
		_ = client.OS().Unmount(ctx, mp, opts.Opts)

		var token string
		vol, token, err = client.Storage().VolumeAttach(
			ctx, vol.ID, &types.VolumeAttachOpts{
				Force: opts.Preempt,
				Opts:  utils.NewStore(),
			})
		if err != nil {
			return "", nil, err
		}

		if token != "" {
			opts := &types.WaitForDeviceOpts{
				LocalDevicesOpts: types.LocalDevicesOpts{
					ScanType: apiconfig.DeviceScanType(d.config),
					Opts:     opts.Opts,
				},
				Token:   token,
				Timeout: apiconfig.DeviceAttachTimeout(d.config),
			}

			_, _, err = client.Executor().WaitForDevice(ctx, opts)
			if err != nil {
				return "", nil, goof.WithError(
					"problem with device discovery", err)
			}
		}

		vol, err = d.volumeInspectByIDOrName(
			ctx, vol.ID, "", types.VolAttReqTrue, opts.Opts)
		if err != nil {
			return "", nil, err
		}

	}

	if len(vol.Attachments) == 0 {
		return "", nil, goof.New("volume did not attach")
	}

	inst, err := client.Storage().InstanceInspect(ctx, utils.NewStore())
	if err != nil {
		return "", nil, goof.New("problem getting instance ID")
	}
	var ma *types.VolumeAttachment
	for _, att := range vol.Attachments {
		if att.InstanceID.ID == inst.InstanceID.ID {
			ma = att
			break
		}
	}

	if ma == nil {
		return "", nil, goof.New("no local attachment found")
	}

	if ma.DeviceName == "" {
		return "", nil, goof.New("no device name returned")
	}

	mounts, err := client.OS().Mounts(
		ctx, ma.DeviceName, "", opts.Opts)
	if err != nil {
		return "", nil, err
	}

	if len(mounts) > 0 {
		return d.volumeMountPath(mounts[0].MountPoint), vol, nil
	}

	if opts.NewFSType == "" {
		opts.NewFSType = d.fsType()
	}

	if err := client.OS().Format(
		ctx,
		ma.DeviceName,
		&types.DeviceFormatOpts{
			NewFSType:   opts.NewFSType,
			OverwriteFS: opts.OverwriteFS,
		}); err != nil {
		return "", nil, err
	}

	mountPath, err := d.getVolumeMountPath(vol.Name)
	if err != nil {
		return "", nil, err
	}

	if err := os.MkdirAll(mountPath, 0755); err != nil {
		return "", nil, err
	}

	if err := client.OS().Mount(
		ctx,
		ma.DeviceName,
		mountPath,
		&types.DeviceMountOpts{}); err != nil {
		return "", nil, err
	}

	mntPath := d.volumeMountPath(mountPath)

	fields := log.Fields{
		"vol":     vol,
		"mntPath": mntPath,
	}
	ctx.WithFields(fields).Info("volume mounted")

	return mntPath, vol, nil
}