// int rbd_create(rados_ioctx_t io, const char *name, uint64_t size, int *order);
// int rbd_create2(rados_ioctx_t io, const char *name, uint64_t size,
// uint64_t features, int *order);
// int rbd_create3(rados_ioctx_t io, const char *name, uint64_t size,
// uint64_t features, int *order,
// uint64_t stripe_unit, uint64_t stripe_count);
func Create(ioctx *rados.IOContext, name string, size uint64,
args ...uint64) (image *Image, err error) {
var ret C.int
var c_order C.int
var c_name *C.char = C.CString(name)
defer C.free(unsafe.Pointer(c_name))
switch len(args) {
case 2:
ret = C.rbd_create3(C.rados_ioctx_t(ioctx.Pointer()),
c_name, C.uint64_t(size),
C.uint64_t(args[0]), &c_order,
C.uint64_t(args[1]), C.uint64_t(args[2]))
case 1:
ret = C.rbd_create2(C.rados_ioctx_t(ioctx.Pointer()),
c_name, C.uint64_t(size),
C.uint64_t(args[0]), &c_order)
case 0:
ret = C.rbd_create(C.rados_ioctx_t(ioctx.Pointer()),
c_name, C.uint64_t(size), &c_order)
default:
return nil, errors.New("Wrong number of argument")
}
if ret < 0 {
return nil, RBDError(int(ret))
}
return &Image{
ioctx: ioctx,
name: name,
}, nil
}
// CreateImage creates a rbd image for the pool. Given a name and size in
// bytes, it will return any error if there was a problem creating the
// image.
func (p *Pool) CreateImage(name string, size uint64) error {
str := C.CString(name)
defer C.free(unsafe.Pointer(str))
order := C.int(0)
if i := C.rbd_create(p.ioctx, str, C.uint64_t(size), &order); i < 0 {
return strerror(i)
}
return nil
}