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diff --git a/src/messages/MOSDRepOpReply.h b/src/messages/MOSDRepOpReply.h
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+++ b/src/messages/MOSDRepOpReply.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+
+#ifndef CEPH_MOSDREPOPREPLY_H
+#define CEPH_MOSDREPOPREPLY_H
+
+#include "MOSDFastDispatchOp.h"
+#include "MOSDRepOp.h"
+
+/*
+ * OSD Client Subop reply
+ *
+ * oid - object id
+ * op  - OSD_OP_DELETE, etc.
+ *
+ */
+
+class MOSDRepOpReply final : public MOSDFastDispatchOp {
+private:
+  static constexpr int HEAD_VERSION = 2;
+  static constexpr int COMPAT_VERSION = 1;
+public:
+  epoch_t map_epoch, min_epoch;
+
+  // subop metadata
+  osd_reqid_t reqid;
+  pg_shard_t from;
+  spg_t pgid;
+
+  // result
+  __u8 ack_type;
+  int32_t result;
+
+  // piggybacked osd state
+  eversion_t last_complete_ondisk;
+
+  ceph::buffer::list::const_iterator p;
+  // Decoding flags. Decoding is only needed for messages caught by pipe reader.
+  bool final_decode_needed;
+
+  epoch_t get_map_epoch() const override {
+    return map_epoch;
+  }
+  epoch_t get_min_epoch() const override {
+    return min_epoch;
+  }
+  spg_t get_spg() const override {
+    return pgid;
+  }
+
+  void decode_payload() override {
+    using ceph::decode;
+    p = payload.cbegin();
+    decode(map_epoch, p);
+    if (header.version >= 2) {
+      decode(min_epoch, p);
+      decode_trace(p);
+    } else {
+      min_epoch = map_epoch;
+    }
+    decode(reqid, p);
+    decode(pgid, p);
+  }
+
+  void finish_decode() {
+    using ceph::decode;
+    if (!final_decode_needed)
+      return; // Message is already final decoded
+    decode(ack_type, p);
+    decode(result, p);
+    decode(last_complete_ondisk, p);
+
+    decode(from, p);
+    final_decode_needed = false;
+  }
+  void encode_payload(uint64_t features) override {
+    using ceph::encode;
+    encode(map_epoch, payload);
+    if (HAVE_FEATURE(features, SERVER_LUMINOUS)) {
+      header.version = HEAD_VERSION;
+      encode(min_epoch, payload);
+      encode_trace(payload, features);
+    } else {
+      header.version = 1;
+    }
+    encode(reqid, payload);
+    encode(pgid, payload);
+    encode(ack_type, payload);
+    encode(result, payload);
+    encode(last_complete_ondisk, payload);
+    encode(from, payload);
+  }
+
+  spg_t get_pg() { return pgid; }
+
+  int get_ack_type() { return ack_type; }
+  bool is_ondisk() { return ack_type & CEPH_OSD_FLAG_ONDISK; }
+  bool is_onnvram() { return ack_type & CEPH_OSD_FLAG_ONNVRAM; }
+
+  int get_result() { return result; }
+
+  void set_last_complete_ondisk(eversion_t v) { last_complete_ondisk = v; }
+  eversion_t get_last_complete_ondisk() const { return last_complete_ondisk; }
+
+public:
+  MOSDRepOpReply(
+    const MOSDRepOp *req, pg_shard_t from, int result_, epoch_t e, epoch_t mine,
+    int at) :
+    MOSDFastDispatchOp{MSG_OSD_REPOPREPLY, HEAD_VERSION, COMPAT_VERSION},
+    map_epoch(e),
+    min_epoch(mine),
+    reqid(req->reqid),
+    from(from),
+    pgid(req->pgid.pgid, req->from.shard),
+    ack_type(at),
+    result(result_),
+    final_decode_needed(false) {
+    set_tid(req->get_tid());
+  }
+  MOSDRepOpReply() 
+    : MOSDFastDispatchOp{MSG_OSD_REPOPREPLY, HEAD_VERSION, COMPAT_VERSION},
+      map_epoch(0),
+      min_epoch(0),
+      ack_type(0), result(0),
+      final_decode_needed(true) {}
+private:
+  ~MOSDRepOpReply() final {}
+
+public:
+  std::string_view get_type_name() const override { return "osd_repop_reply"; }
+
+  void print(std::ostream& out) const override {
+    out << "osd_repop_reply(" << reqid
+        << " " << pgid << " e" << map_epoch << "/" << min_epoch;
+    if (!final_decode_needed) {
+      if (ack_type & CEPH_OSD_FLAG_ONDISK)
+        out << " ondisk";
+      if (ack_type & CEPH_OSD_FLAG_ONNVRAM)
+        out << " onnvram";
+      if (ack_type & CEPH_OSD_FLAG_ACK)
+        out << " ack";
+      out << ", result = " << result;
+    }
+    out << ")";
+  }
+
+private:
+  template<class T, typename... Args>
+  friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
+};
+
+#endif