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Diffstat (limited to '')
-rw-r--r-- | src/tools/rbd_mirror/image_replayer/GetMirrorImageIdRequest.cc | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/tools/rbd_mirror/image_replayer/GetMirrorImageIdRequest.cc b/src/tools/rbd_mirror/image_replayer/GetMirrorImageIdRequest.cc new file mode 100644 index 000000000..74e975373 --- /dev/null +++ b/src/tools/rbd_mirror/image_replayer/GetMirrorImageIdRequest.cc @@ -0,0 +1,85 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#include "tools/rbd_mirror/image_replayer/GetMirrorImageIdRequest.h" +#include "include/rados/librados.hpp" +#include "cls/rbd/cls_rbd_client.h" +#include "common/debug.h" +#include "common/errno.h" +#include "librbd/ImageCtx.h" +#include "librbd/Utils.h" + +#define dout_context g_ceph_context +#define dout_subsys ceph_subsys_rbd_mirror +#undef dout_prefix +#define dout_prefix *_dout << "rbd::mirror::image_replayer::" \ + << "GetMirrorImageIdRequest: " << this << " " \ + << __func__ << ": " + +namespace rbd { +namespace mirror { +namespace image_replayer { + +using librbd::util::create_rados_callback; + +template <typename I> +void GetMirrorImageIdRequest<I>::send() { + dout(20) << dendl; + get_image_id(); +} + +template <typename I> +void GetMirrorImageIdRequest<I>::get_image_id() { + dout(20) << dendl; + + // attempt to cross-reference a image id by the global image id + librados::ObjectReadOperation op; + librbd::cls_client::mirror_image_get_image_id_start(&op, m_global_image_id); + + librados::AioCompletion *aio_comp = create_rados_callback< + GetMirrorImageIdRequest<I>, + &GetMirrorImageIdRequest<I>::handle_get_image_id>( + this); + int r = m_io_ctx.aio_operate(RBD_MIRRORING, aio_comp, &op, &m_out_bl); + ceph_assert(r == 0); + aio_comp->release(); +} + +template <typename I> +void GetMirrorImageIdRequest<I>::handle_get_image_id(int r) { + if (r == 0) { + auto iter = m_out_bl.cbegin(); + r = librbd::cls_client::mirror_image_get_image_id_finish( + &iter, m_image_id); + } + + dout(20) << "r=" << r << ", " + << "image_id=" << *m_image_id << dendl; + + if (r < 0) { + if (r == -ENOENT) { + dout(10) << "global image " << m_global_image_id << " not registered" + << dendl; + } else { + derr << "failed to retrieve image id: " << cpp_strerror(r) << dendl; + } + finish(r); + return; + } + + finish(0); +} + +template <typename I> +void GetMirrorImageIdRequest<I>::finish(int r) { + dout(20) << "r=" << r << dendl; + + m_on_finish->complete(r); + delete this; +} + +} // namespace image_replayer +} // namespace mirror +} // namespace rbd + +template class rbd::mirror::image_replayer::GetMirrorImageIdRequest<librbd::ImageCtx>; |