// int rbd_snap_create(rbd_image_t image, const char *snapname);
func (image *Image) CreateSnapshot(snapname string) (*Snapshot, error) {
if image.image == nil {
return nil, RbdErrorImageNotOpen
}
var c_snapname *C.char = C.CString(snapname)
defer C.free(unsafe.Pointer(c_snapname))
ret := C.rbd_snap_create(image.image, c_snapname)
if ret < 0 {
return nil, RBDError(int(ret))
}
return &Snapshot{
image: image,
name: snapname,
}, nil
}
// CreateSnapshot creates a named snapshot for the image provided.
func (img *Image) CreateSnapshot(snapshotName string) error {
snapshotStr := C.CString(snapshotName)
defer func() {
C.free(unsafe.Pointer(snapshotStr))
}()
action := func(image *C.rbd_image_t) error {
if i, err := C.rbd_snap_create(*image, snapshotStr); err != nil || i < 0 {
if i < 0 {
err = strerror(i)
}
return fmt.Errorf("Error creating snapshot: %v", err)
}
return nil
}
if err := img.pool.wrapOpen(img.imageName, action); err != nil {
return err
}
return nil
}