qa/tasks/cephfs: allow caller to use BytesIO when calling rados()

when the caller expects binary data, it should pass BytesIO as stdout.

this change shold address the failure of
```
2020-04-05T12:47:25.335 INFO:tasks.cephfs_test_runner:======================================================================
2020-04-05T12:47:25.336 INFO:tasks.cephfs_test_runner:ERROR: test_apply_tag (tasks.cephfs.test_forward_scrub.TestForwardScrub)
2020-04-05T12:47:25.336 INFO:tasks.cephfs_test_runner:----------------------------------------------------------------------
2020-04-05T12:47:25.336 INFO:tasks.cephfs_test_runner:Traceback (most recent call last):
2020-04-05T12:47:25.337 INFO:tasks.cephfs_test_runner:  File "/home/teuthworker/src/github.com_tchaikov_ceph_wip-qa-py3/qa/tasks/cephfs/test_forward_scrub.py", line 75, in test_apply_tag
2020-04-05T12:47:25.337 INFO:tasks.cephfs_test_runner:    self.assertTagged(inos[dirpath], tag, self.fs.get_metadata_pool_name())
2020-04-05T12:47:25.337 INFO:tasks.cephfs_test_runner:  File "/home/teuthworker/src/github.com_tchaikov_ceph_wip-qa-py3/qa/tasks/cephfs/test_forward_scrub.py", line 98, in assertTagged
2020-04-05T12:47:25.338 INFO:tasks.cephfs_test_runner:    "scrub_tag"
2020-04-05T12:47:25.338 INFO:tasks.cephfs_test_runner:  File "/home/teuthworker/src/github.com_tchaikov_ceph_wip-qa-py3/qa/tasks/cephfs/test_forward_scrub.py", line 35, in _read_str_xattr
2020-04-05T12:47:25.339 INFO:tasks.cephfs_test_runner:    strlen = struct.unpack('i', output[0:4])[0]
2020-04-05T12:47:25.339 INFO:tasks.cephfs_test_runner:TypeError: a bytes-like object is required, not 'str'
```

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/qa/tasks/cephfs/filesystem.py b/qa/tasks/cephfs/filesystem.py
index dc811fe8d47e2cb583900af3fb801eeb943eb95d..d7aa80093f0edf6b7401f041ad2b350ddc505fda 100644 (file)
--- a/qa/tasks/cephfs/filesystem.py
+++ b/qa/tasks/cephfs/filesystem.py
@@ -11,6 +11,7 @@ import random
 import traceback
 
 from io import BytesIO
+from six import StringIO
 
 from teuthology.exceptions import CommandFailedError
 from teuthology import misc
@@ -1230,7 +1231,8 @@ class Filesystem(MDSCluster):
             return True
 
     def rados(self, args, pool=None, namespace=None, stdin_data=None,
-              stdin_file=None):
+              stdin_file=None,
+              stdout_data=None):
         """
         Call into the `rados` CLI from an MDS
         """
@@ -1251,9 +1253,13 @@ class Filesystem(MDSCluster):
 
         if stdin_file is not None:
             args = ["bash", "-c", "cat " + stdin_file + " | " + " ".join(args)]
+        if stdout_data is None:
+            stdout_data = StringIO()
 
-        output = remote.sh(args, stdin=stdin_data)
-        return output.strip()
+        p = remote.run(args=args,
+                       stdin=stdin_data,
+                       stdout=stdout_data)
+        return p.stdout.getvalue().strip()
 
     def list_dirfrag(self, dir_ino):
         """

diff --git a/qa/tasks/cephfs/test_data_scan.py b/qa/tasks/cephfs/test_data_scan.py
index 481ef0e36b461eb2553efa09916304542a9583e9..dcc48a2a2ff6047844b78ca6a5c4c839db8a6140 100644 (file)
--- a/qa/tasks/cephfs/test_data_scan.py
+++ b/qa/tasks/cephfs/test_data_scan.py
@@ -7,9 +7,11 @@ import json
 import logging
 import os
 import time
-from textwrap import dedent
 import traceback
+
+from io import BytesIO
 from collections import namedtuple, defaultdict
+from textwrap import dedent
 
 from teuthology.orchestra.run import CommandFailedError
 from tasks.cephfs.cephfs_test_case import CephFSTestCase, for_teuthology
@@ -565,7 +567,8 @@ class TestDataScan(CephFSTestCase):
         # introduce duplicated primary link
         file1_key = "file1_head"
         self.assertIn(file1_key, dirfrag1_keys)
-        file1_omap_data = self.fs.rados(["getomapval", dirfrag1_oid, file1_key, '-'])
+        file1_omap_data = self.fs.rados(["getomapval", dirfrag1_oid, file1_key, '-'],
+                                        stdout_data=BytesIO())
         self.fs.rados(["setomapval", dirfrag2_oid, file1_key], stdin_data=file1_omap_data)
         self.assertIn(file1_key, self._dirfrag_keys(dirfrag2_oid))
 

diff --git a/qa/tasks/cephfs/test_forward_scrub.py b/qa/tasks/cephfs/test_forward_scrub.py
index 6eb31b244df4601e7a0245c7671f7e71b8425f20..94e99d3101d029fddefd1dbea89f2f2e6bd65a22 100644 (file)
--- a/qa/tasks/cephfs/test_forward_scrub.py
+++ b/qa/tasks/cephfs/test_forward_scrub.py
@@ -11,6 +11,7 @@ import json
 
 import logging
 from collections import namedtuple
+from io import BytesIO
 from textwrap import dedent
 
 from teuthology.orchestra.run import CommandFailedError
@@ -31,7 +32,8 @@ class TestForwardScrub(CephFSTestCase):
         """
         Read a ceph-encoded string from a rados xattr
         """
-        output = self.fs.rados(["getxattr", obj, attr], pool=pool)
+        output = self.fs.rados(["getxattr", obj, attr], pool=pool,
+                               stdout_data=BytesIO())
         strlen = struct.unpack('i', output[0:4])[0]
         return output[4:(4 + strlen)]