1 files changed, 56 insertions, 0 deletions
diff --git a/src/crimson/osd/osd_meta.h b/src/crimson/osd/osd_meta.h
new file mode 100644
index 000000000..841572087
--- /dev/null
+++ b/src/crimson/osd/osd_meta.h
@@ -0,0 +1,56 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include <map>
+#include <string>
+#include <seastar/core/future.hh>
+#include "osd/osd_types.h"
+#include "crimson/os/futurized_collection.h"
+
+namespace ceph::os {
+  class Transaction;
+}
+
+namespace crimson::os {
+  class FuturizedCollection;
+  class FuturizedStore;
+}
+
+/// metadata shared across PGs, or put in another way,
+/// metadata not specific to certain PGs.
+class OSDMeta {
+  template<typename T> using Ref = boost::intrusive_ptr<T>;
+
+  crimson::os::FuturizedStore* store;
+  Ref<crimson::os::FuturizedCollection> coll;
+
+public:
+  OSDMeta(Ref<crimson::os::FuturizedCollection> coll,
+          crimson::os::FuturizedStore* store)
+    : store{store}, coll{coll}
+  {}
+
+  auto collection() {
+    return coll;
+  }
+  void create(ceph::os::Transaction& t);
+
+  void store_map(ceph::os::Transaction& t,
+                 epoch_t e, const bufferlist& m);
+  seastar::future<bufferlist> load_map(epoch_t e);
+
+  void store_superblock(ceph::os::Transaction& t,
+                        const OSDSuperblock& sb);
+  seastar::future<OSDSuperblock> load_superblock();
+
+  using ec_profile_t = std::map<std::string, std::string>;
+  seastar::future<std::tuple<pg_pool_t,
+			     std::string,
+			     ec_profile_t>> load_final_pool_info(int64_t pool);
+private:
+  static ghobject_t osdmap_oid(epoch_t epoch);
+  static ghobject_t final_pool_info_oid(int64_t pool);
+  static ghobject_t superblock_oid();
+};