Example #1
0
func (devices *DeviceSet) deactivatePool() error {
	glog.V(1).Infof("[devmapper] deactivatePool()")
	defer glog.V(1).Infof("[devmapper] deactivatePool END")
	devname := devices.getPoolDevName()

	devinfo, err := devicemapper.GetInfo(devname)
	if err != nil {
		return err
	}
	if d, err := devicemapper.GetDeps(devname); err == nil {
		// Access to more Debug output
		glog.V(1).Infof("[devmapper] devicemapper.GetDeps() %s: %#v", devname, d)
	}
	if devinfo.Exists != 0 {
		return devicemapper.RemoveDevice(devname)
	}

	return nil
}
Example #2
0
// Issues the underlying dm remove operation.
func (devices *DeviceSet) removeDevice(devname string) error {
	var err error

	glog.V(1).Infof("[devmapper] removeDevice START(%s)", devname)
	defer glog.V(1).Infof("[devmapper] removeDevice END(%s)", devname)

	for i := 0; i < 200; i++ {
		err = devicemapper.RemoveDevice(devname)
		if err == nil {
			break
		}
		if err != devicemapper.ErrBusy {
			return err
		}

		// If we see EBUSY it may be a transient error,
		// sleep a bit a retry a few times.
		devices.Unlock()
		time.Sleep(100 * time.Millisecond)
		devices.Lock()
	}

	return err
}