Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1642 insertions, 0 deletions

diff --git a/src/test/librados/aio.cc b/src/test/librados/aio.cc
new file mode 100644
index 000000000..2ffff1c34
--- /dev/null
+++ b/src/test/librados/aio.cc
@@ -0,0 +1,1642 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <string>
+#include <sstream>
+#include <utility>
+#include <boost/scoped_ptr.hpp>
+
+#include "include/err.h"
+#include "include/rados/librados.h"
+#include "include/types.h"
+#include "include/stringify.h"
+#include "include/scope_guard.h"
+
+#include "common/errno.h"
+
+#include "gtest/gtest.h"
+
+#include "test.h"
+
+using std::ostringstream;
+
+class AioTestData
+{
+public:
+  AioTestData()
+    : m_cluster(NULL),
+      m_ioctx(NULL),
+      m_init(false)
+  {
+  }
+
+  ~AioTestData()
+  {
+    if (m_init) {
+      rados_ioctx_destroy(m_ioctx);
+      destroy_one_pool(m_pool_name, &m_cluster);
+    }
+  }
+
+  std::string init()
+  {
+    int ret;
+    m_pool_name = get_temp_pool_name();
+    std::string err = create_one_pool(m_pool_name, &m_cluster);
+    if (!err.empty()) {
+      ostringstream oss;
+      oss << "create_one_pool(" << m_pool_name << ") failed: error " << err;
+      return oss.str();
+    }
+    ret = rados_ioctx_create(m_cluster, m_pool_name.c_str(), &m_ioctx);
+    if (ret) {
+      destroy_one_pool(m_pool_name, &m_cluster);
+      ostringstream oss;
+      oss << "rados_ioctx_create failed: error " << ret;
+      return oss.str();
+    }
+    m_init = true;
+    return "";
+  }
+
+  rados_t m_cluster;
+  rados_ioctx_t m_ioctx;
+  std::string m_pool_name;
+  bool m_init;
+};
+
+TEST(LibRadosAio, TooBig) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(-E2BIG, rados_aio_write(test_data.m_ioctx, "foo",
+                                    my_completion, buf, UINT_MAX, 0));
+  ASSERT_EQ(-E2BIG, rados_aio_write_full(test_data.m_ioctx, "foo",
+                                         my_completion, buf, UINT_MAX));
+  ASSERT_EQ(-E2BIG, rados_aio_append(test_data.m_ioctx, "foo",
+                                     my_completion, buf, UINT_MAX));
+  rados_aio_release(my_completion);
+}
+
+TEST(LibRadosAio, SimpleWrite) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  auto sg = make_scope_guard([&] { rados_aio_release(my_completion); });
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+
+  rados_ioctx_set_namespace(test_data.m_ioctx, "nspace");
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  auto sg2 = make_scope_guard([&] { rados_aio_release(my_completion2); });
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion2, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+}
+
+TEST(LibRadosAio, WaitForSafe) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  TestAlarm alarm;
+  ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  rados_aio_release(my_completion);
+}
+
+TEST(LibRadosAio, RoundTrip) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[256];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAio, RoundTrip2) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAio, RoundTrip3) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+
+  rados_write_op_t op1 = rados_create_write_op();
+  rados_write_op_write(op1, buf, sizeof(buf), 0);
+  rados_write_op_set_alloc_hint2(op1, 0, 0, LIBRADOS_OP_FLAG_FADVISE_DONTNEED); 
+  ASSERT_EQ(0, rados_aio_write_op_operate(op1, test_data.m_ioctx, my_completion,
+					  "foo", NULL, 0));
+  rados_release_write_op(op1);
+
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  rados_aio_release(my_completion);
+
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+
+  rados_read_op_t op2 = rados_create_read_op();
+  rados_read_op_read(op2, 0, sizeof(buf2), buf2, NULL, NULL);
+  rados_read_op_set_flags(op2, LIBRADOS_OP_FLAG_FADVISE_NOCACHE |
+			       LIBRADOS_OP_FLAG_FADVISE_RANDOM);
+  ceph_le32 init_value = init_le32(-1);
+  ceph_le32 checksum[2];
+  rados_read_op_checksum(op2, LIBRADOS_CHECKSUM_TYPE_CRC32C,
+			 reinterpret_cast<char *>(&init_value),
+			 sizeof(init_value), 0, 0, 0,
+                         reinterpret_cast<char *>(&checksum),
+                         sizeof(checksum), NULL);
+  ASSERT_EQ(0, rados_aio_read_op_operate(op2, test_data.m_ioctx, my_completion2,
+					 "foo", 0));
+  rados_release_read_op(op2);
+  
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion2);
+
+  bufferlist bl;
+  bl.append(buf, sizeof(buf));
+  ASSERT_EQ(1U, checksum[0]);
+  ASSERT_EQ(bl.crc32c(-1), checksum[1]);
+}
+
+TEST(LibRadosAio, RoundTripAppend) {
+  AioTestData test_data;
+  rados_completion_t my_completion, my_completion2, my_completion3;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_append(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0xdd, sizeof(buf2));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_append(test_data.m_ioctx, "foo",
+			       my_completion2, buf2, sizeof(buf2)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  char buf3[sizeof(buf) + sizeof(buf2)];
+  memset(buf3, 0, sizeof(buf3));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion3, buf3, sizeof(buf3), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ((int)sizeof(buf3), rados_aio_get_return_value(my_completion3));
+  ASSERT_EQ(0, memcmp(buf3, buf, sizeof(buf)));
+  ASSERT_EQ(0, memcmp(buf3 + sizeof(buf), buf2, sizeof(buf2)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+}
+
+TEST(LibRadosAio, RemoveTest) {
+  char buf[128];
+  char buf2[sizeof(buf)];
+  rados_completion_t my_completion;
+  AioTestData test_data;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  memset(buf, 0xaa, sizeof(buf));
+  ASSERT_EQ(0, rados_append(test_data.m_ioctx, "foo", buf, sizeof(buf)));
+  ASSERT_EQ(0, rados_aio_remove(test_data.m_ioctx, "foo", my_completion));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  memset(buf2, 0, sizeof(buf2));
+  ASSERT_EQ(-ENOENT, rados_read(test_data.m_ioctx, "foo", buf2, sizeof(buf2), 0));
+  rados_aio_release(my_completion);
+}
+
+TEST(LibRadosAio, XattrsRoundTrip) {
+  char buf[128];
+  char attr1[] = "attr1";
+  char attr1_buf[] = "foo bar baz";
+  // append
+  AioTestData test_data;
+  ASSERT_EQ("", test_data.init());
+  memset(buf, 0xaa, sizeof(buf));
+  ASSERT_EQ(0, rados_append(test_data.m_ioctx, "foo", buf, sizeof(buf)));
+  // async getxattr
+  rados_completion_t my_completion;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  ASSERT_EQ(0, rados_aio_getxattr(test_data.m_ioctx, "foo", my_completion, attr1, buf, sizeof(buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(-ENODATA, rados_aio_get_return_value(my_completion));
+  rados_aio_release(my_completion);
+  // async setxattr
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_setxattr(test_data.m_ioctx, "foo", my_completion2, attr1, attr1_buf, sizeof(attr1_buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  rados_aio_release(my_completion2);
+  // async getxattr
+  rados_completion_t my_completion3;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_getxattr(test_data.m_ioctx, "foo", my_completion3, attr1, buf, sizeof(buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ((int)sizeof(attr1_buf), rados_aio_get_return_value(my_completion3));
+  rados_aio_release(my_completion3);
+  // check content of attribute
+  ASSERT_EQ(0, memcmp(attr1_buf, buf, sizeof(attr1_buf)));
+}
+
+TEST(LibRadosAio, RmXattr) {
+  char buf[128];
+  char attr1[] = "attr1";
+  char attr1_buf[] = "foo bar baz";
+  // append
+  memset(buf, 0xaa, sizeof(buf));
+  AioTestData test_data;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_append(test_data.m_ioctx, "foo", buf, sizeof(buf)));  
+  // async setxattr
+  rados_completion_t my_completion;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  ASSERT_EQ(0, rados_aio_setxattr(test_data.m_ioctx, "foo", my_completion, attr1, attr1_buf, sizeof(attr1_buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  rados_aio_release(my_completion);
+  // async rmxattr
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+            nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_rmxattr(test_data.m_ioctx, "foo", my_completion2, attr1));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  rados_aio_release(my_completion2);
+  // async getxattr after deletion
+  rados_completion_t my_completion3;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+            nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_getxattr(test_data.m_ioctx, "foo", my_completion3, attr1, buf, sizeof(buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ(-ENODATA, rados_aio_get_return_value(my_completion3));
+  rados_aio_release(my_completion3);
+  // Test rmxattr on a removed object
+  char buf2[128];
+  char attr2[] = "attr2";
+  char attr2_buf[] = "foo bar baz";
+  memset(buf2, 0xbb, sizeof(buf2));
+  ASSERT_EQ(0, rados_write(test_data.m_ioctx, "foo_rmxattr", buf2, sizeof(buf2), 0));
+  // asynx setxattr
+  rados_completion_t my_completion4;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+            nullptr, &my_completion4));
+  ASSERT_EQ(0, rados_aio_setxattr(test_data.m_ioctx, "foo_rmxattr", my_completion4, attr2, attr2_buf, sizeof(attr2_buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion4));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion4));
+  rados_aio_release(my_completion4);
+  // remove object
+  ASSERT_EQ(0, rados_remove(test_data.m_ioctx, "foo_rmxattr"));
+  // async rmxattr on non existing object
+  rados_completion_t my_completion5;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+            nullptr, &my_completion5));
+  ASSERT_EQ(0, rados_aio_rmxattr(test_data.m_ioctx, "foo_rmxattr", my_completion5, attr2));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion5));
+  }
+  ASSERT_EQ(-ENOENT, rados_aio_get_return_value(my_completion5));
+  rados_aio_release(my_completion5);
+}
+
+TEST(LibRadosAio, XattrIter) {
+  AioTestData test_data;
+  ASSERT_EQ("", test_data.init());
+  // Create an object with 2 attributes
+  char buf[128];
+  char attr1[] = "attr1";
+  char attr1_buf[] = "foo bar baz";
+  char attr2[] = "attr2";
+  char attr2_buf[256];
+  for (size_t j = 0; j < sizeof(attr2_buf); ++j) {
+    attr2_buf[j] = j % 0xff;
+  }
+  memset(buf, 0xaa, sizeof(buf));
+  ASSERT_EQ(0, rados_append(test_data.m_ioctx, "foo", buf, sizeof(buf)));
+  ASSERT_EQ(0, rados_setxattr(test_data.m_ioctx, "foo", attr1, attr1_buf, sizeof(attr1_buf)));
+  ASSERT_EQ(0, rados_setxattr(test_data.m_ioctx, "foo", attr2, attr2_buf, sizeof(attr2_buf)));
+  // call async version of getxattrs and wait for completion
+  rados_completion_t my_completion;
+  ASSERT_EQ(0, rados_aio_create_completion2((void*)&test_data,
+            nullptr, &my_completion));
+  rados_xattrs_iter_t iter;
+  ASSERT_EQ(0, rados_aio_getxattrs(test_data.m_ioctx, "foo", my_completion, &iter));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  // loop over attributes
+  int num_seen = 0;
+  while (true) {
+    const char *name;
+    const char *val;
+    size_t len;
+    ASSERT_EQ(0, rados_getxattrs_next(iter, &name, &val, &len));
+    if (name == NULL) {
+      break;
+    }
+    ASSERT_LT(num_seen, 2);
+    if ((strcmp(name, attr1) == 0) && (val != NULL) && (memcmp(val, attr1_buf, len) == 0)) {
+      num_seen++;
+      continue;
+    }
+    else if ((strcmp(name, attr2) == 0) && (val != NULL) && (memcmp(val, attr2_buf, len) == 0)) {
+      num_seen++;
+      continue;
+    }
+    else {
+      ASSERT_EQ(0, 1);
+    }
+  }
+  rados_getxattrs_end(iter);
+}
+
+TEST(LibRadosAio, IsComplete) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+
+    // Busy-wait until the AIO completes.
+    // Normally we wouldn't do this, but we want to test rados_aio_is_complete.
+    while (true) {
+      int is_complete = rados_aio_is_complete(my_completion2);
+      if (is_complete)
+	break;
+    }
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAio, IsSafe) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+
+    // Busy-wait until the AIO completes.
+    // Normally we wouldn't do this, but we want to test rados_aio_is_safe.
+    while (true) {
+      int is_safe = rados_aio_is_safe(my_completion);
+      if (is_safe)
+	break;
+    }
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAio, ReturnValue) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "nonexistent",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(-ENOENT, rados_aio_get_return_value(my_completion));
+  rados_aio_release(my_completion);
+}
+
+TEST(LibRadosAio, Flush) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xee, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  ASSERT_EQ(0, rados_aio_flush(test_data.m_ioctx));
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf2), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAio, FlushAsync) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  rados_completion_t flush_completion;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr, nullptr, &flush_completion));
+  char buf[128];
+  memset(buf, 0xee, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  ASSERT_EQ(0, rados_aio_flush_async(test_data.m_ioctx, flush_completion));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(flush_completion));
+  }
+  ASSERT_EQ(1, rados_aio_is_complete(my_completion));
+  ASSERT_EQ(1, rados_aio_is_complete(flush_completion));
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf2), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(flush_completion);
+}
+
+TEST(LibRadosAio, RoundTripWriteFull) {
+  AioTestData test_data;
+  rados_completion_t my_completion, my_completion2, my_completion3;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[64];
+  memset(buf2, 0xdd, sizeof(buf2));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_write_full(test_data.m_ioctx, "foo",
+			       my_completion2, buf2, sizeof(buf2)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  char buf3[sizeof(buf) + sizeof(buf2)];
+  memset(buf3, 0, sizeof(buf3));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion3, buf3, sizeof(buf3), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ((int)sizeof(buf2), rados_aio_get_return_value(my_completion3));
+  ASSERT_EQ(0, memcmp(buf3, buf2, sizeof(buf2)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+}
+
+TEST(LibRadosAio, RoundTripWriteSame) {
+  AioTestData test_data;
+  rados_completion_t my_completion, my_completion2, my_completion3;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char full[128];
+  memset(full, 0xcc, sizeof(full));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, full, sizeof(full), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  /* write the same buf four times */
+  char buf[32];
+  size_t ws_write_len = sizeof(full);
+  memset(buf, 0xdd, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_writesame(test_data.m_ioctx, "foo",
+				   my_completion2, buf, sizeof(buf),
+				   ws_write_len, 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion3, full, sizeof(full), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ((int)sizeof(full), rados_aio_get_return_value(my_completion3));
+  for (char *cmp = full; cmp < full + sizeof(full); cmp += sizeof(buf)) {
+    ASSERT_EQ(0, memcmp(cmp, buf, sizeof(buf)));
+  }
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+}
+
+TEST(LibRadosAio, SimpleStat) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  uint64_t psize;
+  time_t pmtime;
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion2, &psize, &pmtime));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(sizeof(buf), psize);
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAio, SimpleStatNS) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  rados_ioctx_set_namespace(test_data.m_ioctx, "nspace");
+  char buf2[64];
+  memset(buf2, 0xbb, sizeof(buf2));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  uint64_t psize;
+  time_t pmtime;
+  rados_completion_t my_completion2;
+  rados_ioctx_set_namespace(test_data.m_ioctx, "");
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion2, &psize, &pmtime));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(sizeof(buf), psize);
+
+  rados_ioctx_set_namespace(test_data.m_ioctx, "nspace");
+  rados_completion_t my_completion3;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion3, &psize, &pmtime));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion3));
+  ASSERT_EQ(sizeof(buf2), psize);
+
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+}
+
+TEST(LibRadosAio, StatRemove) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  uint64_t psize;
+  time_t pmtime;
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion2, &psize, &pmtime));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(sizeof(buf), psize);
+  rados_completion_t my_completion3;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_remove(test_data.m_ioctx, "foo", my_completion3));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion3));
+  uint64_t psize2;
+  time_t pmtime2;
+  rados_completion_t my_completion4;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion4));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion4, &psize2, &pmtime2));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion4));
+  }
+  ASSERT_EQ(-ENOENT, rados_aio_get_return_value(my_completion4));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+  rados_aio_release(my_completion4);
+}
+
+TEST(LibRadosAio, ExecuteClass) {
+  AioTestData test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  }
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  char out[128];
+  ASSERT_EQ(0, rados_aio_exec(test_data.m_ioctx, "foo", my_completion2,
+			      "hello", "say_hello", NULL, 0, out, sizeof(out)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(13, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, strncmp("Hello, world!", out, 13));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+using std::string;
+using std::map;
+using std::set;
+
+TEST(LibRadosAio, MultiWrite) {
+  AioTestData test_data;
+  rados_completion_t my_completion, my_completion2, my_completion3;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+
+  char buf2[64];
+  memset(buf2, 0xdd, sizeof(buf2));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion2, buf2, sizeof(buf2), sizeof(buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+
+  char buf3[(sizeof(buf) + sizeof(buf2)) * 3];
+  memset(buf3, 0, sizeof(buf3));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion3, buf3, sizeof(buf3), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ((int)(sizeof(buf) + sizeof(buf2)), rados_aio_get_return_value(my_completion3));
+  ASSERT_EQ(0, memcmp(buf3, buf, sizeof(buf)));
+  ASSERT_EQ(0, memcmp(buf3 + sizeof(buf), buf2, sizeof(buf2)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+}
+
+TEST(LibRadosAio, AioUnlock) {
+  AioTestData test_data;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_lock_exclusive(test_data.m_ioctx, "foo", "TestLock", "Cookie", "", NULL, 0));
+  rados_completion_t my_completion;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+            nullptr, &my_completion));
+  ASSERT_EQ(0, rados_aio_unlock(test_data.m_ioctx, "foo", "TestLock", "Cookie", my_completion));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  ASSERT_EQ(0, rados_lock_exclusive(test_data.m_ioctx, "foo", "TestLock", "Cookie", "", NULL,  0));
+}
+
+// EC test cases
+class AioTestDataEC
+{
+public:
+  AioTestDataEC()
+    : m_cluster(NULL),
+      m_ioctx(NULL),
+      m_init(false)
+  {
+  }
+
+  ~AioTestDataEC()
+  {
+    if (m_init) {
+      rados_ioctx_destroy(m_ioctx);
+      destroy_one_ec_pool(m_pool_name, &m_cluster);
+    }
+  }
+
+  std::string init()
+  {
+    int ret;
+    m_pool_name = get_temp_pool_name();
+    std::string err = create_one_ec_pool(m_pool_name, &m_cluster);
+    if (!err.empty()) {
+      ostringstream oss;
+      oss << "create_one_ec_pool(" << m_pool_name << ") failed: error " << err;
+      return oss.str();
+    }
+    ret = rados_ioctx_create(m_cluster, m_pool_name.c_str(), &m_ioctx);
+    if (ret) {
+      destroy_one_ec_pool(m_pool_name, &m_cluster);
+      ostringstream oss;
+      oss << "rados_ioctx_create failed: error " << ret;
+      return oss.str();
+    }
+    m_init = true;
+    return "";
+  }
+
+  rados_t m_cluster;
+  rados_ioctx_t m_ioctx;
+  std::string m_pool_name;
+  bool m_init;
+};
+
+TEST(LibRadosAioEC, SimpleWrite) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  auto sg = make_scope_guard([&] { rados_aio_release(my_completion); });
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+
+  rados_ioctx_set_namespace(test_data.m_ioctx, "nspace");
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  auto sg2 = make_scope_guard([&] { rados_aio_release(my_completion2); });
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion2, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+}
+
+TEST(LibRadosAioEC, WaitForComplete) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  TestAlarm alarm;
+  ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  rados_aio_release(my_completion);
+}
+
+TEST(LibRadosAioEC, RoundTrip) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[256];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAioEC, RoundTrip2) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAioEC, RoundTripAppend) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion, my_completion2, my_completion3, my_completion4;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  int requires;
+  ASSERT_EQ(0, rados_ioctx_pool_requires_alignment2(test_data.m_ioctx, &requires));
+  ASSERT_NE(0, requires);
+  uint64_t alignment;
+  ASSERT_EQ(0, rados_ioctx_pool_required_alignment2(test_data.m_ioctx, &alignment));
+  ASSERT_NE(0U, alignment);
+
+  int bsize = alignment;
+  char *buf = (char *)new char[bsize];
+  memset(buf, 0xcc, bsize);
+  ASSERT_EQ(0, rados_aio_append(test_data.m_ioctx, "foo",
+			       my_completion, buf, bsize));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+
+  int hbsize = bsize / 2;
+  char *buf2 = (char *)new char[hbsize];
+  memset(buf2, 0xdd, hbsize);
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_append(test_data.m_ioctx, "foo",
+			       my_completion2, buf2, hbsize));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_append(test_data.m_ioctx, "foo",
+			       my_completion3, buf2, hbsize));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  EXPECT_EQ(-EOPNOTSUPP, rados_aio_get_return_value(my_completion3));
+
+  int tbsize = bsize + hbsize;
+  char *buf3 = (char *)new char[tbsize];
+  memset(buf3, 0, tbsize);
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion4));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion4, buf3, bsize * 3, 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion4));
+  }
+  ASSERT_EQ(tbsize, rados_aio_get_return_value(my_completion4));
+  ASSERT_EQ(0, memcmp(buf3, buf, bsize));
+  ASSERT_EQ(0, memcmp(buf3 + bsize, buf2, hbsize));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+  rados_aio_release(my_completion4);
+  delete[] buf;
+  delete[] buf2;
+  delete[] buf3;
+}
+
+TEST(LibRadosAioEC, IsComplete) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+
+    // Busy-wait until the AIO completes.
+    // Normally we wouldn't do this, but we want to test rados_aio_is_complete.
+    while (true) {
+      int is_complete = rados_aio_is_complete(my_completion2);
+      if (is_complete)
+	break;
+    }
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAioEC, IsSafe) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+
+    // Busy-wait until the AIO completes.
+    // Normally we wouldn't do this, but we want to test rados_aio_is_safe.
+    while (true) {
+      int is_safe = rados_aio_is_safe(my_completion);
+      if (is_safe)
+	break;
+    }
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAioEC, ReturnValue) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "nonexistent",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(-ENOENT, rados_aio_get_return_value(my_completion));
+  rados_aio_release(my_completion);
+}
+
+TEST(LibRadosAioEC, Flush) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xee, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  ASSERT_EQ(0, rados_aio_flush(test_data.m_ioctx));
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf2), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAioEC, FlushAsync) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  rados_completion_t flush_completion;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr, nullptr, &flush_completion));
+  char buf[128];
+  memset(buf, 0xee, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  ASSERT_EQ(0, rados_aio_flush_async(test_data.m_ioctx, flush_completion));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(flush_completion));
+  }
+  ASSERT_EQ(1, rados_aio_is_complete(my_completion));
+  ASSERT_EQ(1, rados_aio_is_complete(flush_completion));
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[128];
+  memset(buf2, 0, sizeof(buf2));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion2, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ((int)sizeof(buf2), rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(flush_completion);
+}
+
+TEST(LibRadosAioEC, RoundTripWriteFull) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion, my_completion2, my_completion3;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  char buf2[64];
+  memset(buf2, 0xdd, sizeof(buf2));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_write_full(test_data.m_ioctx, "foo",
+			       my_completion2, buf2, sizeof(buf2)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  char buf3[sizeof(buf) + sizeof(buf2)];
+  memset(buf3, 0, sizeof(buf3));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion3, buf3, sizeof(buf3), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ((int)sizeof(buf2), rados_aio_get_return_value(my_completion3));
+  ASSERT_EQ(0, memcmp(buf3, buf2, sizeof(buf2)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+}
+
+TEST(LibRadosAioEC, SimpleStat) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  uint64_t psize;
+  time_t pmtime;
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion2, &psize, &pmtime));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(sizeof(buf), psize);
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+
+TEST(LibRadosAioEC, SimpleStatNS) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  rados_ioctx_set_namespace(test_data.m_ioctx, "nspace");
+  char buf2[64];
+  memset(buf2, 0xbb, sizeof(buf2));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf2, sizeof(buf2), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  uint64_t psize;
+  time_t pmtime;
+  rados_completion_t my_completion2;
+  rados_ioctx_set_namespace(test_data.m_ioctx, "");
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion2, &psize, &pmtime));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(sizeof(buf), psize);
+
+  rados_ioctx_set_namespace(test_data.m_ioctx, "nspace");
+  rados_completion_t my_completion3;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion3, &psize, &pmtime));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion3));
+  ASSERT_EQ(sizeof(buf2), psize);
+
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+}
+
+TEST(LibRadosAioEC, StatRemove) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  uint64_t psize;
+  time_t pmtime;
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion2, &psize, &pmtime));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(sizeof(buf), psize);
+  rados_completion_t my_completion3;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_remove(test_data.m_ioctx, "foo", my_completion3));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion3));
+  uint64_t psize2;
+  time_t pmtime2;
+  rados_completion_t my_completion4;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion4));
+  ASSERT_EQ(0, rados_aio_stat(test_data.m_ioctx, "foo",
+			      my_completion4, &psize2, &pmtime2));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion4));
+  }
+  ASSERT_EQ(-ENOENT, rados_aio_get_return_value(my_completion4));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+  rados_aio_release(my_completion4);
+}
+
+TEST(LibRadosAioEC, ExecuteClass) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+  rados_completion_t my_completion2;
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  char out[128];
+  ASSERT_EQ(0, rados_aio_exec(test_data.m_ioctx, "foo", my_completion2,
+			      "hello", "say_hello", NULL, 0, out, sizeof(out)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(13, rados_aio_get_return_value(my_completion2));
+  ASSERT_EQ(0, strncmp("Hello, world!", out, 13));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+}
+
+TEST(LibRadosAioEC, MultiWrite) {
+  AioTestDataEC test_data;
+  rados_completion_t my_completion, my_completion2, my_completion3;
+  ASSERT_EQ("", test_data.init());
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion));
+  char buf[128];
+  memset(buf, 0xcc, sizeof(buf));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion, buf, sizeof(buf), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion));
+  }
+  ASSERT_EQ(0, rados_aio_get_return_value(my_completion));
+
+  char buf2[64];
+  memset(buf2, 0xdd, sizeof(buf2));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion2));
+  ASSERT_EQ(0, rados_aio_write(test_data.m_ioctx, "foo",
+			       my_completion2, buf2, sizeof(buf2), sizeof(buf)));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion2));
+  }
+  ASSERT_EQ(-EOPNOTSUPP, rados_aio_get_return_value(my_completion2));
+
+  char buf3[(sizeof(buf) + sizeof(buf2)) * 3];
+  memset(buf3, 0, sizeof(buf3));
+  ASSERT_EQ(0, rados_aio_create_completion2(nullptr,
+	      nullptr, &my_completion3));
+  ASSERT_EQ(0, rados_aio_read(test_data.m_ioctx, "foo",
+			      my_completion3, buf3, sizeof(buf3), 0));
+  {
+    TestAlarm alarm;
+    ASSERT_EQ(0, rados_aio_wait_for_complete(my_completion3));
+  }
+  ASSERT_EQ((int)sizeof(buf), rados_aio_get_return_value(my_completion3));
+  ASSERT_EQ(0, memcmp(buf3, buf, sizeof(buf)));
+  rados_aio_release(my_completion);
+  rados_aio_release(my_completion2);
+  rados_aio_release(my_completion3);
+}