seastore/test_transaction_manager: add a test which forces an lba split

Signed-off-by: Samuel Just <sjust@redhat.com>

diff --git a/src/test/crimson/seastore/test_transaction_manager.cc b/src/test/crimson/seastore/test_transaction_manager.cc
index 5c6cccbebefafe7f22e32580970c693d7de0c9b5..d086c4ca34818b3970db098bc2492b92861ace63 100644 (file)
--- a/src/test/crimson/seastore/test_transaction_manager.cc
+++ b/src/test/crimson/seastore/test_transaction_manager.cc
@@ -324,3 +324,21 @@ TEST_F(transaction_manager_test_t, inc_dec_ref)
     }
   });
 }
+
+TEST_F(transaction_manager_test_t, cause_lba_split)
+{
+  constexpr laddr_t SIZE = 4096;
+  run_async([this] {
+    for (unsigned i = 0; i < 200; ++i) {
+      auto t = create_transaction();
+      auto extent = alloc_extent(
+       t,
+       i * SIZE,
+       SIZE,
+       (char)(i & 0xFF));
+      ASSERT_EQ(i * SIZE, extent->get_laddr());
+      submit_transaction(std::move(t));
+    }
+    check_mappings();
+  });
+}