qa/tasks/rbd_fio: update NamedTemporaryFile usage for python3

Open the file in text mode to avoid 'bytes' objects.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit 4e3160a019b5af51e498793aaa24a2a7b82b4b54)

diff --git a/qa/tasks/rbd_fio.py b/qa/tasks/rbd_fio.py
index 437a527fd2d67252f52adfffaeb81c582a145d15..4f3212847034855f7e18b6b15b739a0c13dcb9b3 100644 (file)
--- a/qa/tasks/rbd_fio.py
+++ b/qa/tasks/rbd_fio.py
@@ -91,7 +91,7 @@ def run_fio(remote, config, rbd_test_dir):
     get the fio from github, generate binary, and use it to run on
     the generated fio config file
     """
-    fio_config=NamedTemporaryFile(prefix='fio_rbd_', dir='/tmp/', delete=False)
+    fio_config=NamedTemporaryFile(mode='w', prefix='fio_rbd_', dir='/tmp/', delete=False)
     fio_config.write('[global]\n')
     if config.get('io-engine'):
         ioengine=config['io-engine']