crimson/osd/pg: add logs for repeating pulls

Signed-off-by: Xuehan Xu <[email protected]>

Author: xxhdx1985126

src/crimson/osd/pg.h

@@ -357,10 +357,17 @@ class PG : public boost::intrusive_ref_counter<
     shard_services.remove_want_pg_temp(orderer, pgid.pgid);
   }
   void check_recovery_sources(const OSDMapRef& newmap) final {
+    LOG_PREFIX(PG::check_recovery_sources);
     recovery_backend->for_each_recovery_waiter(
-      [newmap, FNAME](auto &, auto &waiter) {
+      [newmap, FNAME, this](auto &, auto &waiter) {
         if (waiter->is_pulling() &&
             newmap->is_down(waiter->pull_info->from.osd)) {
+          SUBDEBUGDPP(
+            osd,
+            " repeating pulling for {}, due to osd {} down",
+            *this,
+            waiter->pull_info->soid,
+            waiter->pull_info->from.osd);
           waiter->repeat_pull();
         }
       });