Example #1
0
func (devices *DeviceSet) poolStatus() (totalSizeInSectors, transactionId, dataUsed, dataTotal, metadataUsed, metadataTotal uint64, err error) {
	var params string
	if _, totalSizeInSectors, _, params, err = devicemapper.GetStatus(devices.getPoolName()); err == nil {
		_, err = fmt.Sscanf(params, "%d %d/%d %d/%d", &transactionId, &metadataUsed, &metadataTotal, &dataUsed, &dataTotal)
	}
	return
}
Example #2
0
func (devices *DeviceSet) deviceStatus(devName string) (sizeInSectors, mappedSectors, highestMappedSector uint64, err error) {
	var params string
	_, sizeInSectors, _, params, err = devicemapper.GetStatus(devName)
	if err != nil {
		return
	}
	if _, err = fmt.Sscanf(params, "%d %d", &mappedSectors, &highestMappedSector); err == nil {
		return
	}
	return
}
Example #3
0
func (devices *DeviceSet) initMetaData() error {
	_, _, _, params, err := devicemapper.GetStatus(devices.getPoolName())
	if err != nil {
		return err
	}

	if _, err := fmt.Sscanf(params, "%d", &devices.TransactionId); err != nil {
		return err
	}
	devices.NewTransactionId = devices.TransactionId

	// Migrate old metadatafile

	jsonData, err := ioutil.ReadFile(devices.oldMetadataFile())
	if err != nil && !os.IsNotExist(err) {
		return err
	}

	if jsonData != nil {
		m := MetaData{Devices: make(map[string]*DevInfo)}

		if err := json.Unmarshal(jsonData, &m); err != nil {
			return err
		}

		for hash, info := range m.Devices {
			info.Hash = hash

			// If the transaction id is larger than the actual one we lost the device due to some crash
			if info.TransactionId <= devices.TransactionId {
				devices.saveMetadata(info)
			}
		}
		if err := os.Rename(devices.oldMetadataFile(), devices.oldMetadataFile()+".migrated"); err != nil {
			return err
		}

	}

	return nil
}