Esempio n. 1
0
func (d *Driver) removeDevice(name string) error {
	if err := devicemapper.BlockDeviceDiscard(name); err != nil {
		log.Debugf("Error %s when discarding %v, ignored", err, name)
	}
	for i := 0; i < 200; i++ {
		err := devicemapper.RemoveDevice(name)
		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.
		time.Sleep(100 * time.Millisecond)
	}
	return nil
}
Esempio n. 2
0
func (devices *DeviceSet) deleteDevice(info *DevInfo) error {
	if devices.doBlkDiscard {
		// This is a workaround for the kernel not discarding block so
		// on the thin pool when we remove a thinp device, so we do it
		// manually
		if err := devices.activateDeviceIfNeeded(info); err == nil {
			if err := devicemapper.BlockDeviceDiscard(info.DevName()); err != nil {
				log.Debugf("Error discarding block on device: %s (ignoring)", err)
			}
		}
	}

	devinfo, _ := devicemapper.GetInfo(info.Name())
	if devinfo != nil && devinfo.Exists != 0 {
		if err := devices.removeDeviceAndWait(info.Name()); err != nil {
			log.Debugf("Error removing device: %s", err)
			return err
		}
	}

	if err := devices.openTransaction(info.Hash, info.DeviceId); err != nil {
		log.Debugf("Error opening transaction hash = %s deviceId = %d", "", info.DeviceId)
		return err
	}

	if err := devicemapper.DeleteDevice(devices.getPoolDevName(), info.DeviceId); err != nil {
		log.Debugf("Error deleting device: %s", err)
		return err
	}

	if err := devices.unregisterDevice(info.DeviceId, info.Hash); err != nil {
		return err
	}

	if err := devices.closeTransaction(); err != nil {
		return err
	}

	devices.markDeviceIdFree(info.DeviceId)

	return nil
}
Esempio n. 3
0
func (devices *DeviceSet) deleteDevice(info *DevInfo) error {
	if devices.doBlkDiscard {
		// This is a workaround for the kernel not discarding block so
		// on the thin pool when we remove a thinp device, so we do it
		// manually
		if err := devices.activateDeviceIfNeeded(info); err == nil {
			if err := devicemapper.BlockDeviceDiscard(info.DevName()); err != nil {
				log.Debugf("Error discarding block on device: %s (ignoring)", err)
			}
		}
	}

	devinfo, _ := devicemapper.GetInfo(info.Name())
	if devinfo != nil && devinfo.Exists != 0 {
		if err := devices.removeDeviceAndWait(info.Name()); err != nil {
			log.Debugf("Error removing device: %s", err)
			return err
		}
	}

	if err := devicemapper.DeleteDevice(devices.getPoolDevName(), info.DeviceId); err != nil {
		log.Debugf("Error deleting device: %s", err)
		return err
	}

	devices.allocateTransactionId()
	devices.devicesLock.Lock()
	delete(devices.Devices, info.Hash)
	devices.devicesLock.Unlock()

	if err := devices.removeMetadata(info); err != nil {
		devices.devicesLock.Lock()
		devices.Devices[info.Hash] = info
		devices.devicesLock.Unlock()
		log.Debugf("Error removing meta data: %s", err)
		return err
	}

	return nil
}