diff --git a/tests/qtest/ufs-test.c b/tests/qtest/ufs-test.c
index 9cc9e57..9f45a07 100644
--- a/tests/qtest/ufs-test.c
+++ b/tests/qtest/ufs-test.c
@@ -539,6 +539,87 @@
     ufs_exit(ufs, alloc);
 }
 
+static void ufstest_query_flag_request(void *obj, void *data,
+                                       QGuestAllocator *alloc)
+{
+    QUfs *ufs = obj;
+
+    UtpTransferReqDesc utrd;
+    UtpUpiuRsp rsp_upiu;
+    ufs_init(ufs, alloc);
+
+    /* Read read-only flag */
+    ufs_send_query(ufs, 0, UFS_UPIU_QUERY_FUNC_STANDARD_READ_REQUEST,
+                   UFS_UPIU_QUERY_OPCODE_READ_FLAG,
+                   UFS_QUERY_FLAG_IDN_FDEVICEINIT, 0, 0, 0, &utrd, &rsp_upiu);
+    g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), ==, UFS_OCS_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.header.response, ==, UFS_COMMAND_RESULT_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.qr.opcode, ==, UFS_UPIU_QUERY_OPCODE_READ_FLAG);
+    g_assert_cmpuint(rsp_upiu.qr.idn, ==, UFS_QUERY_FLAG_IDN_FDEVICEINIT);
+    g_assert_cmpuint(rsp_upiu.qr.value, ==, be32_to_cpu(0));
+
+    /* Flag Set, Clear, Toggle Test with fDeviceLifeSpanModeEn */
+    ufs_send_query(ufs, 0, UFS_UPIU_QUERY_FUNC_STANDARD_READ_REQUEST,
+                   UFS_UPIU_QUERY_OPCODE_READ_FLAG,
+                   UFS_QUERY_FLAG_IDN_LIFE_SPAN_MODE_ENABLE, 0, 0, 0, &utrd,
+                   &rsp_upiu);
+    g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), ==, UFS_OCS_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.header.response, ==, UFS_COMMAND_RESULT_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.qr.value, ==, be32_to_cpu(0));
+
+    ufs_send_query(ufs, 0, UFS_UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST,
+                   UFS_UPIU_QUERY_OPCODE_SET_FLAG,
+                   UFS_QUERY_FLAG_IDN_LIFE_SPAN_MODE_ENABLE, 0, 0, 0, &utrd,
+                   &rsp_upiu);
+    g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), ==, UFS_OCS_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.header.response, ==, UFS_COMMAND_RESULT_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.qr.value, ==, be32_to_cpu(1));
+
+    ufs_send_query(ufs, 0, UFS_UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST,
+                   UFS_UPIU_QUERY_OPCODE_CLEAR_FLAG,
+                   UFS_QUERY_FLAG_IDN_LIFE_SPAN_MODE_ENABLE, 0, 0, 0, &utrd,
+                   &rsp_upiu);
+    g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), ==, UFS_OCS_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.header.response, ==, UFS_COMMAND_RESULT_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.qr.value, ==, be32_to_cpu(0));
+
+    ufs_send_query(ufs, 0, UFS_UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST,
+                   UFS_UPIU_QUERY_OPCODE_TOGGLE_FLAG,
+                   UFS_QUERY_FLAG_IDN_LIFE_SPAN_MODE_ENABLE, 0, 0, 0, &utrd,
+                   &rsp_upiu);
+    g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), ==, UFS_OCS_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.header.response, ==, UFS_COMMAND_RESULT_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.qr.value, ==, be32_to_cpu(1));
+
+    ufs_send_query(ufs, 0, UFS_UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST,
+                   UFS_UPIU_QUERY_OPCODE_TOGGLE_FLAG,
+                   UFS_QUERY_FLAG_IDN_LIFE_SPAN_MODE_ENABLE, 0, 0, 0, &utrd,
+                   &rsp_upiu);
+    g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), ==, UFS_OCS_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.header.response, ==, UFS_COMMAND_RESULT_SUCCESS);
+    g_assert_cmpuint(rsp_upiu.qr.value, ==, be32_to_cpu(0));
+
+    /* Read Write-only Flag (Intended Failure) */
+    ufs_send_query(ufs, 0, UFS_UPIU_QUERY_FUNC_STANDARD_READ_REQUEST,
+                   UFS_UPIU_QUERY_OPCODE_READ_FLAG,
+                   UFS_QUERY_FLAG_IDN_PURGE_ENABLE, 0, 0, 0, &utrd, &rsp_upiu);
+    g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), ==,
+                     UFS_OCS_INVALID_CMD_TABLE_ATTR);
+    g_assert_cmpuint(rsp_upiu.header.response, ==,
+                     UFS_QUERY_RESULT_NOT_READABLE);
+
+    /* Write Read-Only Flag (Intended Failure) */
+    ufs_send_query(ufs, 0, UFS_UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST,
+                   UFS_UPIU_QUERY_OPCODE_SET_FLAG, UFS_QUERY_FLAG_IDN_BUSY_RTC,
+                   0, 0, 0, &utrd, &rsp_upiu);
+    g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), ==,
+                     UFS_OCS_INVALID_CMD_TABLE_ATTR);
+    g_assert_cmpuint(rsp_upiu.header.response, ==,
+                     UFS_QUERY_RESULT_NOT_WRITEABLE);
+
+    ufs_exit(ufs, alloc);
+}
+
 static void drive_destroy(void *path)
 {
     unlink(path);
@@ -606,6 +687,8 @@
     }
     qos_add_test("init", "ufs", ufstest_init, NULL);
     qos_add_test("read-write", "ufs", ufstest_read_write, &io_test_opts);
+    qos_add_test("flag read-write", "ufs",
+                 ufstest_query_flag_request, &io_test_opts);
 }
 
 libqos_init(ufs_register_nodes);