crimson/.../transaction_manager: add log for eagain

Signed-off-by: Yingxin Cheng <yingxin.cheng@intel.com>

diff --git a/src/crimson/os/seastore/transaction_manager.cc b/src/crimson/os/seastore/transaction_manager.cc
index a20ffc1ed2e6c03fa84dd39dbfe3ebcd972ce6bb..f9689254b916aab936bf367a1221d8fbdc818c5b 100644 (file)
--- a/src/crimson/os/seastore/transaction_manager.cc
+++ b/src/crimson/os/seastore/transaction_manager.cc
@@ -218,6 +218,8 @@ TransactionManager::submit_transaction_direct(
         -> submit_transaction_ertr::future<> {
     auto record = cache->try_construct_record(tref);
     if (!record) {
+      logger().debug("TransactionManager::submit_transaction_direct: "
+                     "conflict detected, returning eagain.");
       return crimson::ct_error::eagain::make();
     }