crimson/osd: Rename MOSDMap::oldest_map users

Signed-off-by: Matan Breizman <mbreizma@redhat.com>

2 files changed, 18 insertions, 7 deletions

diff --git a/src/crimson/osd/osd.cc b/src/crimson/osd/osd.cc
index 0d282327e65..03b002a2a96 100644
--- a/src/crimson/osd/osd.cc
+++ b/src/crimson/osd/osd.cc
@@ -667,6 +667,8 @@ void OSD::dump_status(Formatter* f) const
   f->dump_unsigned("whoami", superblock.whoami);
   f->dump_string("state", pg_shard_manager.get_osd_state_string());
   f->dump_unsigned("oldest_map", superblock.oldest_map);
+  f->dump_unsigned("cluster_osdmap_trim_lower_bound",
+                   superblock.cluster_osdmap_trim_lower_bound);
   f->dump_unsigned("newest_map", superblock.newest_map);
   f->dump_unsigned("num_pgs", pg_shard_manager.get_num_pgs());
 }
@@ -857,7 +859,8 @@ seastar::future<> OSD::handle_osd_map(crimson::net::ConnectionRef conn,
   const auto first = m->get_first();
   const auto last = m->get_last();
   logger().info("handle_osd_map epochs [{}..{}], i have {}, src has [{}..{}]",
-                first, last, superblock.newest_map, m->oldest_map, m->newest_map);
+                first, last, superblock.newest_map,
+                m->cluster_osdmap_trim_lower_bound, m->newest_map);
   // make sure there is something new, here, before we bother flushing
   // the queues and such
   if (last <= superblock.newest_map) {
@@ -869,15 +872,16 @@ seastar::future<> OSD::handle_osd_map(crimson::net::ConnectionRef conn,
   if (first > start) {
     logger().info("handle_osd_map message skips epochs {}..{}",
                   start, first - 1);
-    if (m->oldest_map <= start) {
+    if (m->cluster_osdmap_trim_lower_bound <= start) {
       return get_shard_services().osdmap_subscribe(start, false);
     }
     // always try to get the full range of maps--as many as we can.  this
     //  1- is good to have
     //  2- is at present the only way to ensure that we get a *full* map as
     //     the first map!
-    if (m->oldest_map < first) {
-      return get_shard_services().osdmap_subscribe(m->oldest_map - 1, true);
+    if (m->cluster_osdmap_trim_lower_bound < first) {
+      return get_shard_services().osdmap_subscribe(
+        m->cluster_osdmap_trim_lower_bound - 1, true);
     }
     skip_maps = true;
     start = first;
@@ -984,7 +988,8 @@ seastar::future<> OSD::committed_osd_maps(version_t first,
       logger().info("osd.{}: now preboot", whoami);
 
       if (m->get_source().is_mon()) {
-        return _preboot(m->oldest_map, m->newest_map);
+        return _preboot(
+          m->cluster_osdmap_trim_lower_bound, m->newest_map);
       } else {
         logger().info("osd.{}: start_boot", whoami);
         return start_boot();
diff --git a/src/crimson/osd/shard_services.cc b/src/crimson/osd/shard_services.cc
index a1d2580b358..94ab24ee098 100644
--- a/src/crimson/osd/shard_services.cc
+++ b/src/crimson/osd/shard_services.cc
@@ -689,7 +689,7 @@ seastar::future<> OSDSingletonState::send_incremental_map(
       auto m = crimson::make_message<MOSDMap>(
 	monc.get_fsid(),
 	osdmap->get_encoding_features());
-      m->oldest_map = first;
+      m->cluster_osdmap_trim_lower_bound = first;
       m->newest_map = superblock.newest_map;
       m->maps = std::move(bls);
       return conn.send(std::move(m));
@@ -700,7 +700,13 @@ seastar::future<> OSDSingletonState::send_incremental_map(
       auto m = crimson::make_message<MOSDMap>(
 	monc.get_fsid(),
 	osdmap->get_encoding_features());
-      m->oldest_map = superblock.oldest_map;
+      /* TODO: once we support the tracking of superblock's
+       *       cluster_osdmap_trim_lower_bound, the MOSDMap should
+       *       be populated with this value instead of the oldest_map.
+       *       See: OSD::handle_osd_map for how classic updates the
+       *       cluster's trim lower bound.
+       */
+      m->cluster_osdmap_trim_lower_bound = superblock.oldest_map;
       m->newest_map = superblock.newest_map;
       m->maps.emplace(osdmap->get_epoch(), std::move(bl));
       return conn.send(std::move(m));