[Qemu-devel] [PATCH v4 4/7] tests: iotests: drop some stderr line

[Peter Xu <peterx@redhat.com>]

In my Out-Of-Band test, "check -qcow2 060" fail with this (the output is
manually changed due to line width requirement):

060 5s ... - output mismatch (see 060.out.bad)
--- /home/peterx/git/qemu/tests/qemu-iotests/060.out
+++ /home/peterx/git/qemu/bin/tests/qemu-iotests/060.out.bad
@@ -427,8 +427,8 @@
 QMP_VERSION
 {"return": {}}
 qcow2: Image is corrupt: L2 table offset 0x2a2a2a00 unaligned (L1
  index: 0); further non-fatal corruption events will be suppressed
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP},
- "event": "BLOCK_IMAGE_CORRUPTED", "data": {"device": "", "msg": "L2
- table offset 0x2a2a2a0
0 unaligned (L1 index: 0)", "node-name": "drive", "fatal": false}}
 read failed: Input/output error
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP},
+ "event": "BLOCK_IMAGE_CORRUPTED", "data": {"device": "", "msg": "L2
+ table offset 0x2a2a2a0
0 unaligned (L1 index: 0)", "node-name": "drive", "fatal": false}}
 {"return": ""}
 {"return": {}}
 {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP},
  "event": "SHUTDOWN", "data": {"guest": false}}

The order of the event and the in/out error line is swapped.  I didn't
dig up the reason, but AFAIU what we want to verify is the event rather
than stderr.  Let's drop the stderr line directly for this test.

Signed-off-by: Peter Xu <peterx@redhat.com>

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 tests/qemu-iotests/060     | 10 +++++++++-
 tests/qemu-iotests/060.out |  1 -
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060
index 7bdf609f3f..74ad371885 100755
--- a/tests/qemu-iotests/060
+++ b/tests/qemu-iotests/060
@@ -33,6 +33,14 @@ _cleanup()
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
 
+# Sometimes the error line might be dumped before/after an event
+# randomly.  Mask it out for specific test that may trigger this
+# uncertainty for current test for now.
+_filter_io_error()
+{
+    sed '/Input\/output error/d'
+}
+
 # get standard environment, filters and checks
 . ./common.rc
 . ./common.filter
@@ -464,7 +472,7 @@ echo "{'execute': 'qmp_capabilities'}
                         }}" \
             -incoming exec:'cat /dev/null' \
             2>&1 \
-    | _filter_qmp | _filter_qemu_io
+    | _filter_qmp | _filter_qemu_io | _filter_io_error
 
 echo
 # Image should not have been marked corrupt
diff --git a/tests/qemu-iotests/060.out b/tests/qemu-iotests/060.out
index bff023d889..d67c6234a4 100644
--- a/tests/qemu-iotests/060.out
+++ b/tests/qemu-iotests/060.out
@@ -428,7 +428,6 @@ QMP_VERSION
 {"return": {}}
 qcow2: Image is corrupt: L2 table offset 0x2a2a2a00 unaligned (L1 index: 0); further non-fatal corruption events will be suppressed
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_IMAGE_CORRUPTED", "data": {"device": "", "msg": "L2 table offset 0x2a2a2a00 unaligned (L1 index: 0)", "node-name": "drive", "fatal": false}}
-read failed: Input/output error
 {"return": ""}
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}}
-- 
2.17.1