qa/tasks/radosbenchsweep: get rid of cStringIO for py3

Signed-off-by: Kyr Shatskyy <kyrylo.shatskyy@suse.com>

diff --git a/qa/tasks/radosbenchsweep.py b/qa/tasks/radosbenchsweep.py
index f1fa7e04d0076a4c885392fc8aa0ada518bdb18c..0aeb7218681c3858e2b9b47d4833dbf5692bb6b7 100644 (file)
--- a/qa/tasks/radosbenchsweep.py
+++ b/qa/tasks/radosbenchsweep.py
@@ -5,7 +5,7 @@ import contextlib
 import logging
 import re
 
-from cStringIO import StringIO
+from io import BytesIO
 from itertools import product
 
 from teuthology.orchestra import run
@@ -189,7 +189,7 @@ def run_radosbench(ctx, config, f, num_osds, size, replica, rep):
             ],
             logger=log.getChild('radosbench.{id}'.format(id=id_)),
             stdin=run.PIPE,
-            stdout=StringIO(),
+            stdout=BytesIO(),
             wait=False
         )