示例#1
0
// New constructs a new Driver
func New(params DriverParameters) (*Driver, error) {
	var conn *rados.Conn
	var err error

	if params.username != "" {
		log.Infof("Opening connection to pool %s using user %s", params.poolname, params.username)
		conn, err = rados.NewConnWithUser(params.username)
	} else {
		log.Infof("Opening connection to pool %s", params.poolname)
		conn, err = rados.NewConn()
	}

	if err != nil {
		return nil, err
	}

	err = conn.ReadDefaultConfigFile()
	if err != nil {
		return nil, err
	}

	err = conn.Connect()
	if err != nil {
		return nil, err
	}

	log.Infof("Connected")

	ioctx, err := conn.OpenIOContext(params.poolname)

	log.Infof("Connected to pool %s", params.poolname)

	if err != nil {
		return nil, err
	}

	d := &driver{
		Ioctx:     ioctx,
		Conn:      conn,
		chunksize: params.chunksize,
	}

	return &Driver{
		baseEmbed: baseEmbed{
			Base: base.Base{
				StorageDriver: d,
			},
		},
	}, nil
}
示例#2
0
// connect builds up the ceph conn and default pool
func (d *cephRBDVolumeDriver) connect() {
	log.Println("INFO: connecting to Ceph and default pool context")
	d.m.Lock()
	defer d.m.Unlock()

	// create reusable go-ceph Client Connection
	var cephConn *rados.Conn
	var err error
	if d.cluster == "" {
		cephConn, err = rados.NewConnWithUser(d.user)
	} else {
		// FIXME: TODO: can't seem to use a cluster name -- get error -22 from go-ceph/rados:
		// panic: Unable to create ceph connection to cluster=ceph with user=admin: rados: ret=-22
		cephConn, err = rados.NewConnWithClusterAndUser(d.cluster, d.user)
	}
	if err != nil {
		log.Panicf("ERROR: Unable to create ceph connection to cluster=%s with user=%s: %s", d.cluster, d.user, err)
	}

	// read ceph.conf and setup connection
	if d.config == "" {
		err = cephConn.ReadDefaultConfigFile()
	} else {
		err = cephConn.ReadConfigFile(d.config)
	}
	if err != nil {
		log.Panicf("ERROR: Unable to read ceph config: %s", err)
	}

	err = cephConn.Connect()
	if err != nil {
		log.Panicf("ERROR: Unable to connect to Ceph: %s", err)
	}

	// can now set conn in driver
	d.conn = cephConn

	// setup the default context (pool most likely to be used)
	defaultContext, err := d.openContext(d.defaultPool)
	if err != nil {
		log.Panicf("ERROR: Unable to connect to default Ceph Pool: %s", err)
	}
	d.defaultIoctx = defaultContext
}