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Subject: [PATCH v3 11/11] tests/acceptance: Linux boot test for record/replay
From: Pavel Dovgalyuk <Pavel.Dovgaluk@gmail.com>
To: qemu-devel@nongnu.org
Date: Fri, 29 May 2020 10:05:37 +0300
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This patch adds a test for record/replay, which boots Linux
image from the disk and interacts with the network.
The idea and code of this test is borrowed from boot_linux.py
However, currently record/replay works only for x86_64,
therefore other tests were excluded.
Each test consists of the following phases:
- downloading the disk image
- recording the execution
- replaying the execution
Replay does not validates the output, but waits until QEMU
finishes the execution. This is reasonable, because
QEMU usually hangs when replay goes wrong.
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
---
0 files changed
diff --git a/MAINTAINERS b/MAINTAINERS
index e9a9ce4f66..97f066a9b2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2498,6 +2498,7 @@ F: include/sysemu/replay.h
F: docs/replay.txt
F: stubs/replay.c
F: tests/acceptance/replay_kernel.py
+F: tests/acceptance/replay_linux.py
=20
IOVA Tree
M: Peter Xu <peterx@redhat.com>
diff --git a/tests/acceptance/replay_linux.py b/tests/acceptance/replay_lin=
ux.py
new file mode 100644
index 0000000000..328b03bb33
--- /dev/null
+++ b/tests/acceptance/replay_linux.py
@@ -0,0 +1,114 @@
+# Record/replay test that boots a complete Linux system via a cloud image
+#
+# Copyright (c) 2020 ISP RAS
+#
+# Author:
+# Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later. See the COPYING file in the top-level directory.
+
+import os
+import logging
+import time
+
+from avocado.utils import cloudinit
+from avocado.utils import network
+from avocado.utils import vmimage
+from avocado.utils import datadrainer
+from avocado.utils.path import find_command
+from boot_linux import BootLinuxBase
+
+class ReplayLinux(BootLinuxBase):
+ """
+ Boots a Linux system, checking for a successful initialization
+ """
+
+ timeout =3D 1800
+ chksum =3D None
+ hdd =3D 'ide-hd'
+ cd =3D 'ide-cd'
+ bus =3D 'ide'
+
+ def setUp(self):
+ super(ReplayLinux, self).setUp()
+ self.boot_path =3D self.download_boot()
+ self.cloudinit_path =3D self.download_cloudinit()
+
+ def vm_add_disk(self, vm, path, id, device):
+ bus_string =3D ''
+ if self.bus:
+ bus_string =3D ',bus=3D%s.%d' % (self.bus, id,)
+ vm.add_args('-drive', 'file=3D%s,snapshot,id=3Ddisk%s,if=3Dnone' %=
(path, id))
+ vm.add_args('-drive',
+ 'driver=3Dblkreplay,id=3Ddisk%s-rr,if=3Dnone,image=3Ddisk%s' %=
(id, id))
+ vm.add_args('-device',
+ '%s,drive=3Ddisk%s-rr%s' % (device, id, bus_string))
+
+ def launch_and_wait(self, record, args, shift):
+ vm =3D self.get_vm()
+ vm.add_args('-smp', '1')
+ vm.add_args('-m', '1024')
+ vm.add_args('-object', 'filter-replay,id=3Dreplay,netdev=3Dhub0por=
t0')
+ if args:
+ vm.add_args(*args)
+ self.vm_add_disk(vm, self.boot_path, 0, self.hdd)
+ self.vm_add_disk(vm, self.cloudinit_path, 1, self.cd)
+ logger =3D logging.getLogger('replay')
+ if record:
+ logger.info('recording the execution...')
+ mode =3D 'record'
+ else:
+ logger.info('replaying the execution...')
+ mode =3D 'replay'
+ replay_path =3D os.path.join(self.workdir, 'replay.bin')
+ vm.add_args('-icount', 'shift=3D%s,rr=3D%s,rrfile=3D%s' %
+ (shift, mode, replay_path))
+
+ start_time =3D time.time()
+
+ vm.set_console()
+ vm.launch()
+ console_drainer =3D datadrainer.LineLogger(vm.console_socket.filen=
o(),
+ logger=3Dself.log.getChild('console'),
+ stop_check=3D(lambda : not vm.is_runni=
ng()))
+ console_drainer.start()
+ if record:
+ cloudinit.wait_for_phone_home(('0.0.0.0', self.phone_home_port=
),
+ self.name)
+ vm.shutdown()
+ logger.info('finished the recording with log size %s bytes'
+ % os.path.getsize(replay_path))
+ else:
+ vm.wait()
+ logger.info('successfully fihished the replay')
+ elapsed =3D time.time() - start_time
+ logger.info('elapsed time %.2f sec' % elapsed)
+ return elapsed
+
+ def run_rr(self, args=3DNone, shift=3D7):
+ t1 =3D self.launch_and_wait(True, args, shift)
+ t2 =3D self.launch_and_wait(False, args, shift)
+ logger =3D logging.getLogger('replay')
+ logger.info('replay overhead {:.2%}'.format(t2 / t1 - 1))
+
+class ReplayLinuxX8664(ReplayLinux):
+ """
+ :avocado: tags=3Darch:x86_64
+ """
+
+ chksum =3D 'e3c1b309d9203604922d6e255c2c5d098a309c2d46215d8fc026954f3c=
5c27a0'
+
+ def test_pc_i440fx(self):
+ """
+ :avocado: tags=3Dmachine:pc
+ :avocado: tags=3Daccel:tcg
+ """
+ self.run_rr(shift=3D1)
+
+ def test_pc_q35(self):
+ """
+ :avocado: tags=3Dmachine:q35
+ :avocado: tags=3Daccel:tcg
+ """
+ self.run_rr(shift=3D3)