1 files changed, 82 insertions, 0 deletions
diff --git a/src/librbd/image/DetachParentRequest.cc b/src/librbd/image/DetachParentRequest.cc
new file mode 100644
index 00000000..40ff44b7
--- /dev/null
+++ b/src/librbd/image/DetachParentRequest.cc
@@ -0,0 +1,82 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/image/DetachParentRequest.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "common/WorkQueue.h"
+#include "cls/rbd/cls_rbd_client.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/Utils.h"
+
+#define dout_subsys ceph_subsys_rbd
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::image::DetachParentRequest: " << this \
+                           << " " << __func__ << ": "
+
+namespace librbd {
+namespace image {
+
+using util::create_context_callback;
+using util::create_rados_callback;
+
+template <typename I>
+void DetachParentRequest<I>::send() {
+  detach_parent();
+}
+
+template <typename I>
+void DetachParentRequest<I>::detach_parent() {
+  auto cct = m_image_ctx.cct;
+  ldout(cct, 5) << dendl;
+
+  librados::ObjectWriteOperation op;
+  if (!m_legacy_parent) {
+    librbd::cls_client::parent_detach(&op);
+  } else {
+    librbd::cls_client::remove_parent(&op);
+  }
+
+  auto aio_comp = create_rados_callback<
+    DetachParentRequest<I>,
+    &DetachParentRequest<I>::handle_detach_parent>(this);
+  int r = m_image_ctx.md_ctx.aio_operate(m_image_ctx.header_oid, aio_comp, &op);
+  ceph_assert(r == 0);
+  aio_comp->release();
+}
+
+template <typename I>
+void DetachParentRequest<I>::handle_detach_parent(int r) {
+  auto cct = m_image_ctx.cct;
+  ldout(cct, 5) << dendl;
+
+   if (!m_legacy_parent && r == -EOPNOTSUPP) {
+    ldout(cct, 10) << "retrying using legacy parent method" << dendl;
+    m_legacy_parent = true;
+    detach_parent();
+    return;
+  }
+
+  if (r < 0 && r != -ENOENT) {
+    lderr(cct) << "detach parent encountered an error: " << cpp_strerror(r)
+               << dendl;
+    finish(r);
+    return;
+  }
+
+  finish(0);
+}
+
+template <typename I>
+void DetachParentRequest<I>::finish(int r) {
+  auto cct = m_image_ctx.cct;
+  ldout(cct, 5) << "r=" << r << dendl;
+
+  m_on_finish->complete(r);
+  delete this;
+}
+
+} // namespace image
+} // namespace librbd
+
+template class librbd::image::DetachParentRequest<librbd::ImageCtx>;