Enable io_uring in stress test (#12313)

Summary:
Enable io_uring in stress test

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12313

Test Plan: Crash test

Reviewed By: anand1976

Differential Revision: D53238319

Pulled By: akankshamahajan15

fbshipit-source-id: c0c8e6a6479f6977210370606e9d551c1299ba62

5 files changed, 5 insertions, 19 deletions

diff --git a/.circleci/config.yml b/.circleci/config.yml
index d47c18c7c..2c72a22d9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -547,7 +547,7 @@ jobs:
     resource_class: large
     steps:
       - pre-steps
-      - run: ulimit -S -n `ulimit -H -n` && make V=1 -j8 CRASH_TEST_EXT_ARGS='--duration=960 --max_key=2500000 --use_io_uring=0' blackbox_crash_test_with_atomic_flush
+      - run: ulimit -S -n `ulimit -H -n` && make V=1 -j8 CRASH_TEST_EXT_ARGS='--duration=960 --max_key=2500000' blackbox_crash_test_with_atomic_flush
       - post-steps
 
   build-linux-crashtest-tiered-storage-bb:
@@ -557,7 +557,7 @@ jobs:
       - pre-steps
       - run:
           name: "run crashtest"
-          command: ulimit -S -n `ulimit -H -n` && make V=1 -j32 CRASH_TEST_EXT_ARGS='--duration=10800 --use_io_uring=0' blackbox_crash_test_with_tiered_storage
+          command: ulimit -S -n `ulimit -H -n` && make V=1 -j32 CRASH_TEST_EXT_ARGS='--duration=10800' blackbox_crash_test_with_tiered_storage
           no_output_timeout: 100m
       - post-steps
 
@@ -568,7 +568,7 @@ jobs:
       - pre-steps
       - run:
           name: "run crashtest"
-          command: ulimit -S -n `ulimit -H -n` && make V=1 -j32 CRASH_TEST_EXT_ARGS='--duration=10800 --use_io_uring=0' whitebox_crash_test_with_tiered_storage
+          command: ulimit -S -n `ulimit -H -n` && make V=1 -j32 CRASH_TEST_EXT_ARGS='--duration=10800' whitebox_crash_test_with_tiered_storage
           no_output_timeout: 100m
       - post-steps
 
diff --git a/.github/workflows/pr-jobs.yml b/.github/workflows/pr-jobs.yml
index 68e660dc3..00f1305a2 100644
--- a/.github/workflows/pr-jobs.yml
+++ b/.github/workflows/pr-jobs.yml
@@ -352,7 +352,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4.1.0
     - uses: "./.github/actions/pre-steps"
-    - run: ulimit -S -n `ulimit -H -n` && make V=1 -j8 CRASH_TEST_EXT_ARGS='--duration=960 --max_key=2500000 --use_io_uring=0' blackbox_crash_test_with_atomic_flush
+    - run: ulimit -S -n `ulimit -H -n` && make V=1 -j8 CRASH_TEST_EXT_ARGS='--duration=960 --max_key=2500000' blackbox_crash_test_with_atomic_flush
     - uses: "./.github/actions/post-steps"
   # ======================= Linux with Sanitizers ===================== #
   build-linux-clang10-asan:
diff --git a/db_stress_tool/db_stress_common.h b/db_stress_tool/db_stress_common.h
index 4c7ee5f15..768e90b9f 100644
--- a/db_stress_tool/db_stress_common.h
+++ b/db_stress_tool/db_stress_common.h
@@ -351,7 +351,6 @@ DECLARE_uint64(readahead_size);
 DECLARE_uint64(initial_auto_readahead_size);
 DECLARE_uint64(max_auto_readahead_size);
 DECLARE_uint64(num_file_reads_for_auto_readahead);
-DECLARE_bool(use_io_uring);
 DECLARE_bool(auto_readahead_size);
 
 constexpr long KB = 1024;
diff --git a/db_stress_tool/db_stress_gflags.cc b/db_stress_tool/db_stress_gflags.cc
index c6ffbc93e..3a0059425 100644
--- a/db_stress_tool/db_stress_gflags.cc
+++ b/db_stress_tool/db_stress_gflags.cc
@@ -1129,11 +1129,9 @@ DEFINE_uint64(stats_dump_period_sec,
               ROCKSDB_NAMESPACE::Options().stats_dump_period_sec,
               "Gap between printing stats to log in seconds");
 
-DEFINE_bool(use_io_uring, false, "Enable the use of IO uring on Posix");
-
 DEFINE_bool(verification_only, false,
             "If true, tests will only execute verification step");
-extern "C" bool RocksDbIOUringEnable() { return FLAGS_use_io_uring; }
+extern "C" bool RocksDbIOUringEnable() { return true; }
 
 DEFINE_uint32(memtable_max_range_deletions, 0,
               "If nonzero, RocksDB will try to flush the current memtable"
diff --git a/db_stress_tool/db_stress_tool.cc b/db_stress_tool/db_stress_tool.cc
index 9c24e2c42..54147ea9c 100644
--- a/db_stress_tool/db_stress_tool.cc
+++ b/db_stress_tool/db_stress_tool.cc
@@ -100,17 +100,6 @@ int db_stress_tool(int argc, char** argv) {
 
   env_wrapper_guard = std::make_shared<CompositeEnvWrapper>(
       raw_env, std::make_shared<DbStressFSWrapper>(raw_env->GetFileSystem()));
-  if (!env_opts && !FLAGS_use_io_uring) {
-    // If using the default Env (Posix), wrap DbStressEnvWrapper with the
-    // legacy EnvWrapper. This is a workaround to prevent MultiGet and scans
-    // from failing when IO uring is disabled. The EnvWrapper
-    // has a default implementation of ReadAsync that redirects to Read.
-    legacy_env_wrapper_guard = std::make_shared<EnvWrapper>(raw_env);
-    env_wrapper_guard = std::make_shared<CompositeEnvWrapper>(
-        legacy_env_wrapper_guard,
-        std::make_shared<DbStressFSWrapper>(
-            legacy_env_wrapper_guard->GetFileSystem()));
-  }
   db_stress_env = env_wrapper_guard.get();
 
   FLAGS_rep_factory = StringToRepFactory(FLAGS_memtablerep.c_str());