unittest_alloc: add test_alloc_big

Ensure that big allocations work. Verifies http://tracker.ceph.com/issues/16662 Signed-off-by: Sage Weil <[email protected]>
limx59 · May 4, 2017 · e61d9e4 · e61d9e4
1 parent 577cca0
commit e61d9e4
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/src/test/objectstore/Allocator_test.cc b/src/test/objectstore/Allocator_test.cc
@@ -200,6 +200,22 @@ TEST_P(AllocTest, test_alloc_failure)
   }
 }
 
+TEST_P(AllocTest, test_alloc_big)
+{
+  int64_t block_size = 4096;
+  int64_t blocks = 104857600;
+  int64_t mas = 4096;
+  init_alloc(blocks*block_size, block_size);
+  alloc->init_add_free(2*block_size, (blocks-2)*block_size);
+  for (int64_t big = mas; big < 1048576*128; big*=2) {
+    cout << big << std::endl;
+    EXPECT_EQ(alloc->reserve(big), 0);
+    AllocExtentVector extents;
+    EXPECT_EQ(big,
+	      alloc->allocate(big, mas, 0, &extents));
+  }
+}
+
 TEST_P(AllocTest, test_alloc_hint_bmap)
 {
   if (GetParam() == std::string("stupid")) {