func ProbeExistingVolume(v *pod.UserVolume, sharedDir string) (*hypervisor.VolumeInfo, error) {
if v == nil || v.Source == "" { //do not create volume in this function, it depends on storage driver.
return nil, fmt.Errorf("can not generate volume info from %v", v)
}
var err error = nil
vol := &hypervisor.VolumeInfo{
Name: v.Name,
}
if v.Driver == "vfs" {
vol.Fstype = "dir"
vol.Filepath, err = storage.MountVFSVolume(v.Source, sharedDir)
if err != nil {
return nil, err
}
glog.V(1).Infof("dir %s is bound to %s", v.Source, vol.Filepath)
} else {
vol.Fstype, err = dm.ProbeFsType(v.Source)
if err != nil {
vol.Fstype = DEFAULT_VOL_FS //FIXME: for qcow2, the ProbeFsType doesn't work, should be fix later
}
vol.Format = v.Driver
vol.Filepath = v.Source
}
return vol, nil
}
func (dms *DevMapperStorage) PrepareContainer(ci *Container, sharedDir string) error {
if err := dm.CreateNewDevice(ci.mountID, dms.DevPrefix, dms.RootPath()); err != nil {
return err
}
devFullName, err := dm.MountContainerToSharedDir(ci.mountID, sharedDir, dms.DevPrefix)
if err != nil {
glog.Error("got error when mount container to share dir ", err.Error())
return err
}
fstype, err := dm.ProbeFsType(devFullName)
if err != nil {
fstype = "ext4"
}
ci.rootfs = "/rootfs"
ci.fstype = fstype
ci.ApiContainer.Image = devFullName
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.db.UpdatePodVolume(podId, volName, []byte(fmt.Sprintf("%s:%s", 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
}
func ProbeExistingVolume(v *apitypes.UserVolume, sharedDir string) (*runv.VolumeDescription, error) {
if v == nil || v.Source == "" { //do not create volume in this function, it depends on storage driver.
return nil, fmt.Errorf("can not generate volume info from %v", v)
}
var err error = nil
vol := &runv.VolumeDescription{
Name: v.Name,
Source: v.Source,
Format: v.Format,
Fstype: v.Fstype,
}
if v.Option != nil {
vol.Options = &runv.VolumeOption{
User: v.Option.User,
Monitors: v.Option.Monitors,
Keyring: v.Option.Keyring,
}
}
if v.Format == "vfs" {
vol.Fstype = "dir"
vol.Source, err = storage.MountVFSVolume(v.Source, sharedDir)
if err != nil {
return nil, err
}
hlog.Log(DEBUG, "dir %s is bound to %s", v.Source, vol.Source)
} else if v.Format == "raw" && v.Fstype == "" {
vol.Fstype, err = dm.ProbeFsType(v.Source)
if err != nil {
vol.Fstype = storage.DEFAULT_VOL_FS
err = nil
}
}
return vol, nil
}