[PATCH v2 3/4] iotests/mirror-top-perms: switch to AQMP

[John Snow <jsnow@redhat.com>]

We don't have to maintain compatibility with both QMP libraries anymore,
so we can just remove the old exception. While we're here, take
advantage of the extra fields present in the VMLaunchFailure exception
that machine.py now raises.

(Note: I'm leaving the logging suppression here unchanged. I had
suggested previously we use filters to scrub the PID out of the logging
information so it could just be diffed as part of the iotest output, but
that meant *always* scrubbing PID from logger output, which defeated the
point of even offering that information in the output to begin with.

Ultimately, I decided it's fine to just suppress the logger temporarily.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/tests/mirror-top-perms | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/tests/qemu-iotests/tests/mirror-top-perms b/tests/qemu-iotests/tests/mirror-top-perms
index b5849978c4..223f3c1620 100755
--- a/tests/qemu-iotests/tests/mirror-top-perms
+++ b/tests/qemu-iotests/tests/mirror-top-perms
@@ -22,7 +22,6 @@
 import os
 
 from qemu.machine import machine
-from qemu.qmp import QMPConnectError
 
 import iotests
 from iotests import change_log_level, qemu_img
@@ -99,15 +98,13 @@ class TestMirrorTopPerms(iotests.QMPTestCase):
         self.vm_b.add_blockdev(f'file,node-name=drive0,filename={source}')
         self.vm_b.add_device('virtio-blk,drive=drive0,share-rw=on')
         try:
-            # Silence AQMP errors temporarily.
-            # TODO: Remove this and just allow the errors to be logged when
-            # AQMP fully replaces QMP.
+            # Silence AQMP logging errors temporarily.
             with change_log_level('qemu.aqmp'):
                 self.vm_b.launch()
                 print('ERROR: VM B launched successfully, '
                       'this should not have happened')
-        except (QMPConnectError, machine.VMLaunchFailure):
-            assert 'Is another process using the image' in self.vm_b.get_log()
+        except machine.VMLaunchFailure as exc:
+            assert 'Is another process using the image' in exc.output
 
         result = self.vm.qmp('block-job-cancel',
                              device='mirror')
-- 
2.34.1