func (daemon *Daemon) CreateVolume(podId, volName, dev_id string, restore bool) error {
err := dm.CreateVolume(daemon.Storage.DmPoolData.PoolName, volName, dev_id, 2*1024*1024*1024, restore)
if err != nil {
return err
}
daemon.SetVolumeId(podId, volName, dev_id)
return nil
}
func (dms *DevMapperStorage) CreateVolume(daemon *Daemon, podId, shortName string) (*hypervisor.VolumeInfo, error) {
volName := fmt.Sprintf("%s-%s-%s", dms.VolPoolName, podId, shortName)
dev_id, _ := daemon.GetVolumeId(podId, volName)
glog.Infof("DeviceID is %d", dev_id)
restore := dev_id > 0
for {
if !restore {
dev_id = dms.randDevId()
}
dev_id_str := strconv.Itoa(dev_id)
err := dm.CreateVolume(dms.VolPoolName, volName, dev_id_str, DEFAULT_DM_VOL_SIZE, restore)
if err != nil && !restore && strings.Contains(err.Error(), "failed: File exists") {
glog.V(1).Infof("retry for dev_id #%d creating collision: %v", dev_id, err)
continue
} else if err != nil {
glog.V(1).Infof("failed to create dev_id #%d: %v", dev_id, err)
return nil, err
}
glog.V(3).Infof("device (%d) created (restore:%v) for %s: %s", dev_id, restore, podId, volName)
daemon.SetVolumeId(podId, volName, dev_id_str)
break
}
fstype, err := dm.ProbeFsType("/dev/mapper/" + volName)
if err != nil {
fstype = "ext4"
}
glog.V(1).Infof("volume %s created with dm as %s", shortName, volName)
return &hypervisor.VolumeInfo{
Name: shortName,
Filepath: path.Join("/dev/mapper/", volName),
Fstype: fstype,
Format: "raw",
}, nil
}