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-rw-r--r--src/librbd/operation/SnapshotRenameRequest.cc102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/librbd/operation/SnapshotRenameRequest.cc b/src/librbd/operation/SnapshotRenameRequest.cc
new file mode 100644
index 000000000..e9257f18c
--- /dev/null
+++ b/src/librbd/operation/SnapshotRenameRequest.cc
@@ -0,0 +1,102 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/operation/SnapshotRenameRequest.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "librbd/ImageCtx.h"
+
+#define dout_subsys ceph_subsys_rbd
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::SnapshotRenameRequest: "
+
+namespace librbd {
+namespace operation {
+
+namespace {
+
+template <typename I>
+std::ostream& operator<<(std::ostream& os,
+ const typename SnapshotRenameRequest<I>::State& state) {
+ switch(state) {
+ case SnapshotRenameRequest<I>::STATE_RENAME_SNAP:
+ os << "RENAME_SNAP";
+ break;
+ }
+ return os;
+}
+
+} // anonymous namespace
+
+template <typename I>
+SnapshotRenameRequest<I>::SnapshotRenameRequest(I &image_ctx,
+ Context *on_finish,
+ uint64_t snap_id,
+ const std::string &snap_name)
+ : Request<I>(image_ctx, on_finish), m_snap_id(snap_id),
+ m_snap_name(snap_name), m_state(STATE_RENAME_SNAP) {
+}
+
+template <typename I>
+journal::Event SnapshotRenameRequest<I>::create_event(uint64_t op_tid) const {
+ I &image_ctx = this->m_image_ctx;
+ ceph_assert(ceph_mutex_is_locked(image_ctx.image_lock));
+
+ std::string src_snap_name;
+ auto snap_info_it = image_ctx.snap_info.find(m_snap_id);
+ if (snap_info_it != image_ctx.snap_info.end()) {
+ src_snap_name = snap_info_it->second.name;
+ }
+
+ return journal::SnapRenameEvent(op_tid, m_snap_id, src_snap_name,
+ m_snap_name);
+}
+
+template <typename I>
+void SnapshotRenameRequest<I>::send_op() {
+ send_rename_snap();
+}
+
+template <typename I>
+bool SnapshotRenameRequest<I>::should_complete(int r) {
+ I &image_ctx = this->m_image_ctx;
+ CephContext *cct = image_ctx.cct;
+ ldout(cct, 5) << this << " " << __func__ << ": state=" << m_state << ", "
+ << "r=" << r << dendl;
+ if (r < 0) {
+ if (r == -EEXIST) {
+ ldout(cct, 1) << "snapshot already exists" << dendl;
+ } else {
+ lderr(cct) << "encountered error: " << cpp_strerror(r) << dendl;
+ }
+ }
+ return true;
+}
+
+template <typename I>
+void SnapshotRenameRequest<I>::send_rename_snap() {
+ I &image_ctx = this->m_image_ctx;
+ ceph_assert(ceph_mutex_is_locked(image_ctx.owner_lock));
+ std::shared_lock image_locker{image_ctx.image_lock};
+
+ CephContext *cct = image_ctx.cct;
+ ldout(cct, 5) << this << " " << __func__ << dendl;
+
+ librados::ObjectWriteOperation op;
+ if (image_ctx.old_format) {
+ cls_client::old_snapshot_rename(&op, m_snap_id, m_snap_name);
+ } else {
+ cls_client::snapshot_rename(&op, m_snap_id, m_snap_name);
+ }
+
+ librados::AioCompletion *rados_completion = this->create_callback_completion();
+ int r = image_ctx.md_ctx.aio_operate(image_ctx.header_oid,
+ rados_completion, &op);
+ ceph_assert(r == 0);
+ rados_completion->release();
+}
+
+} // namespace operation
+} // namespace librbd
+
+template class librbd::operation::SnapshotRenameRequest<librbd::ImageCtx>;