func (d *Driver) CreateVolume(id string, opts map[string]string) error {
d.mutex.Lock()
defer d.mutex.Unlock()
backupURL := opts[convoydriver.OPT_BACKUP_URL]
if backupURL != "" {
objVolume, err := objectstore.LoadVolume(backupURL)
if err != nil {
return err
}
if objVolume.Driver != d.Name() {
return fmt.Errorf("Cannot restore backup of %v to %v", objVolume.Driver, d.Name())
}
}
volumeName := opts[convoydriver.OPT_VOLUME_NAME]
if volumeName == "" {
volumeName = "volume-" + id[:8]
}
volume := d.blankVolume(id)
exists, err := util.ObjectExists(volume)
if err != nil {
return err
}
if exists {
return fmt.Errorf("volume %v already exists", id)
}
volume.PrepareForVM, err = strconv.ParseBool(opts[convoydriver.OPT_PREPARE_FOR_VM])
if err != nil {
return err
}
if volume.PrepareForVM {
volume.Size, err = d.getSize(opts, d.DefaultVolumeSize)
if err != nil {
return err
}
}
volumePath := filepath.Join(d.Path, volumeName)
if err := util.MkdirIfNotExists(volumePath); err != nil {
return err
}
volume.Path = volumePath
volume.Snapshots = make(map[string]Snapshot)
if backupURL != "" {
file, err := objectstore.RestoreSingleFileBackup(backupURL, volumePath)
if err != nil {
return err
}
// file would be removed after this because it's under volumePath
if err := util.DecompressDir(file, volumePath); err != nil {
return err
}
}
return util.ObjectSave(volume)
}
func (d *Driver) GetBackupInfo(backupURL string) (map[string]string, error) {
objVolume, err := objectstore.LoadVolume(backupURL)
if err != nil {
return nil, err
}
if objVolume.Driver != d.Name() {
return nil, fmt.Errorf("BUG: Wrong driver handling DeleteBackup(), driver should be %v but is %v", objVolume.Driver, d.Name())
}
return objectstore.GetBackupInfo(backupURL)
}
func (d *Driver) DeleteBackup(backupURL string) error {
objVolume, err := objectstore.LoadVolume(backupURL)
if err != nil {
return err
}
if objVolume.Driver != d.Name() {
return fmt.Errorf("BUG: Wrong driver handling DeleteBackup(), driver should be %v but is %v", objVolume.Driver, d.Name())
}
return objectstore.DeleteSingleFileBackup(backupURL)
}
func (s *daemon) getBackupOpsForBackup(requestURL string) (convoydriver.BackupOperations, error) {
objVolume, err := objectstore.LoadVolume(requestURL)
if err != nil {
return nil, err
}
driver := s.ConvoyDrivers[objVolume.Driver]
if driver == nil {
return nil, fmt.Errorf("Cannot find driver %v for restoring", objVolume.Driver)
}
return driver.BackupOps()
}
func (d *Driver) DeleteBackup(backupURL string) error {
d.mutex.Lock()
defer d.mutex.Unlock()
objVolume, err := objectstore.LoadVolume(backupURL)
if err != nil {
return err
}
if objVolume.Driver != d.Name() {
return fmt.Errorf("BUG: Wrong driver handling DeleteBackup(), driver should be %v but is %v", objVolume.Driver, d.Name())
}
return objectstore.DeleteDeltaBlockBackup(backupURL)
}
func (s *daemon) getBackupOpsForBackup(requestURL string) (convoydriver.BackupOperations, error) {
driverName := ""
if _, err := objectstore.GetObjectStoreDriver(requestURL); err == nil {
// Known objectstore driver
objVolume, err := objectstore.LoadVolume(requestURL)
if err != nil {
return nil, err
}
driverName = objVolume.Driver
} else {
// Try Convoy driver
u, err := url.Parse(requestURL)
if err != nil {
return nil, err
}
driverName = u.Scheme
}
driver := s.ConvoyDrivers[driverName]
if driver == nil {
return nil, fmt.Errorf("Cannot find driver %v for restoring", driverName)
}
return driver.BackupOps()
}
func (d *Driver) CreateVolume(id string, opts map[string]string) error {
var (
size int64
err error
)
backupURL := opts[convoydriver.OPT_BACKUP_URL]
if backupURL != "" {
objVolume, err := objectstore.LoadVolume(backupURL)
if err != nil {
return err
}
if objVolume.Driver != d.Name() {
return fmt.Errorf("Cannot restore backup of %v to %v", objVolume.Driver, d.Name())
}
size, err = d.getSize(opts, objVolume.Size)
if err != nil {
return err
}
if size != objVolume.Size {
return fmt.Errorf("Volume size must match with backup's size")
}
} else {
size, err = d.getSize(opts, d.DefaultVolumeSize)
if err != nil {
return err
}
}
if size%(d.ThinpoolBlockSize*SECTOR_SIZE) != 0 {
return fmt.Errorf("Size must be multiple of block size")
}
volume := d.blankVolume(id)
exists, err := util.ObjectExists(volume)
if err != nil {
return err
}
if exists {
return generateError(logrus.Fields{
LOG_FIELD_VOLUME: id,
}, "Already has volume with specific uuid")
}
devID, err := d.allocateDevID()
if err != nil {
return err
}
log.WithFields(logrus.Fields{
LOG_FIELD_REASON: LOG_REASON_START,
LOG_FIELD_EVENT: LOG_EVENT_CREATE,
LOG_FIELD_OBJECT: LOG_OBJECT_VOLUME,
LOG_FIELD_VOLUME: id,
DM_LOG_FIELD_VOLUME_DEVID: devID,
}).Debugf("Creating volume")
err = devicemapper.CreateDevice(d.ThinpoolDevice, devID)
if err != nil {
return err
}
log.WithFields(logrus.Fields{
LOG_FIELD_REASON: LOG_REASON_START,
LOG_FIELD_EVENT: LOG_EVENT_ACTIVATE,
LOG_FIELD_OBJECT: LOG_OBJECT_VOLUME,
LOG_FIELD_VOLUME: id,
DM_LOG_FIELD_VOLUME_DEVID: devID,
}).Debugf("Activating device for volume")
err = devicemapper.ActivateDevice(d.ThinpoolDevice, id, devID, uint64(size))
if err != nil {
log.WithFields(logrus.Fields{
LOG_FIELD_REASON: LOG_REASON_ROLLBACK,
LOG_FIELD_EVENT: LOG_EVENT_REMOVE,
LOG_FIELD_OBJECT: LOG_OBJECT_VOLUME,
LOG_FIELD_VOLUME: id,
DM_LOG_FIELD_VOLUME_DEVID: devID,
}).Debugf("Removing device for volume due to fail to activate")
if err := devicemapper.DeleteDevice(d.ThinpoolDevice, devID); err != nil {
log.WithFields(logrus.Fields{
LOG_FIELD_REASON: LOG_REASON_FAILURE,
LOG_FIELD_EVENT: LOG_EVENT_REMOVE,
LOG_FIELD_OBJECT: LOG_OBJECT_VOLUME,
LOG_FIELD_VOLUME: id,
DM_LOG_FIELD_VOLUME_DEVID: devID,
}).Debugf("Failed to remove device")
}
return err
}
volume.DevID = devID
volume.Size = size
volume.Snapshots = make(map[string]Snapshot)
if err := util.ObjectSave(volume); err != nil {
return err
}
dev, err := d.GetVolumeDevice(id)
if err != nil {
return err
}
if backupURL == "" {
// format the device
if _, err := util.Execute("mkfs", []string{"-t", "ext4", dev}); err != nil {
return err
}
} else {
if err := objectstore.RestoreDeltaBlockBackup(backupURL, dev); err != nil {
return err
}
}
return nil
}