Commit 1f4b774a authored by Vladimir Sementsov-Ogievskiy's avatar Vladimir Sementsov-Ogievskiy Committed by Eric Blake
Browse files

iotests.py: QemuIoInteractive: print output on failure 



Make it simpler to debug when qemu-io fails due to wrong arguments or
environment.

Signed-off-by: default avatarVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Message-Id: <20200701105331.121670-3-vsementsov@virtuozzo.com>
Signed-off-by: default avatarEric Blake <eblake@redhat.com>
parent a1a7f56c

tests/qemu-iotests/iotests.py

+7 −1
Original line number Diff line number Diff line
@@ -217,7 +217,13 @@ class QemuIoInteractive: 
                                   stdout=subprocess.PIPE,

                                   stderr=subprocess.STDOUT,

                                   universal_newlines=True)

        assert self._p.stdout.read(9) == 'qemu-io> '

        out = self._p.stdout.read(9)

        if out != 'qemu-io> ':

            # Most probably qemu-io just failed to start.

            # Let's collect the whole output and exit.

            out += self._p.stdout.read()

            self._p.wait(timeout=1)

            raise ValueError(out)



    def close(self):

        self._p.communicate('q\n')