iotests: Skip test_stream_parallel in test 030 when doing "make check"

The test_stream_parallel test still occasionally fails in the CI.
Thus let's disable it during "make check" for now so that it does
not cause trouble during merge tests. We can enable it again once
the problem has been resolved.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200907113824.134788-1-thuth@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>

tests/check-block.sh

@@ -55,6 +55,9 @@ fi
 
 cd tests/qemu-iotests
 
+# QEMU_CHECK_BLOCK_AUTO is used to disable some unstable sub-tests
+export QEMU_CHECK_BLOCK_AUTO=1
+
 ret=0
 for fmt in $format_list ; do
     ./check -makecheck -$fmt $group || ret=1

tests/qemu-iotests/030

@@ -21,6 +21,7 @@
 import time
 import os
 import iotests
+import unittest
 from iotests import qemu_img, qemu_io
 
 backing_img = os.path.join(iotests.test_dir, 'backing.img')
@@ -228,6 +229,7 @@ class TestParallelOps(iotests.QMPTestCase):
 
     # Test that it's possible to run several block-stream operations
     # in parallel in the same snapshot chain
+    @unittest.skipIf(os.environ.get('QEMU_CHECK_BLOCK_AUTO'), 'disabled in CI')
     def test_stream_parallel(self):
         self.assert_no_active_block_jobs()