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[188.85.120.92]) by smtp.gmail.com with ESMTPSA id t23-20020a1c7717000000b003fbb9339b29sm2118064wmi.42.2023.07.26.07.36.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Jul 2023 07:36:33 -0700 (PDT) From: Juan Quintela To: Daniel P. =?utf-8?Q?Berrang=C3=A9?= Cc: Peter Maydell , qemu-devel@nongnu.org, richard.henderson@linaro.org Subject: Re: How to tame CI? In-Reply-To: ("Daniel P. =?utf-8?Q?Berrang?= =?utf-8?Q?=C3=A9=22's?= message of "Wed, 26 Jul 2023 15:17:01 +0100") References: <87fs5aho6e.fsf@secure.mitica> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) Date: Wed, 26 Jul 2023 16:36:32 +0200 Message-ID: <87bkfyhh8v.fsf@secure.mitica> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=170.10.129.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: quintela@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Daniel P. Berrang=C3=A9 wrote: > On Wed, Jul 26, 2023 at 02:00:03PM +0100, Peter Maydell wrote: >> On Wed, 26 Jul 2023 at 13:06, Juan Quintela wrote: >> > To make things easier, this is the part that show how it breaks (this = is >> > the gcov test): >> > >> > 357/423 qemu:block / io-qcow2-copy-before-write = ERROR 6.38s exit status 1 >> > >>> PYTHON=3D/builds/juan.quintela/qemu/build/pyvenv/bin/python3 >> > MALLOC_PERTURB_=3D44 >> > /builds/juan.quintela/qemu/build/pyvenv/bin/python3 >> > /builds/juan.quintela/qemu/build/../tests/qemu-iotests/check -tap >> > -qcow2 copy-before-write --source-dir >> > /builds/juan.quintela/qemu/tests/qemu-iotests --build-dir >> > /builds/juan.quintela/qemu/build/tests/qemu-iotests >> > =E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80= =95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95= =E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2= =80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80= =95=E2=80=95=E2=80=95=E2=80=95=E2=80=95 =E2=9C=80 =E2=80=95=E2=80=95=E2=80= =95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95= =E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2= =80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80= =95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95=E2=80=95= =E2=80=95 >> > stderr: >> > --- /builds/juan.quintela/qemu/tests/qemu-iotests/tests/copy-before-wr= ite.out >> > +++ /builds/juan.quintela/qemu/build/scratch/qcow2-file-copy-before-wr= ite/copy-before-write.out.bad >> > @@ -1,5 +1,21 @@ >> > -.... >> > +...F >> > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D >> > +FAIL: test_timeout_break_snapshot (__main__.TestCbwError) >> > +---------------------------------------------------------------------- >> > +Traceback (most recent call last): >> > + File "/builds/juan.quintela/qemu/tests/qemu-iotests/tests/copy-befo= re-write", line 210, in test_timeout_break_snapshot >> > + self.assertEqual(log, """\ >> > +AssertionError: 'wrot[195 chars]read 1048576/1048576 bytes at >> > offset 0\n1 MiB,[46 chars]c)\n' !=3D 'wrot[195 chars]read failed: >> > Permission denied\n' >> > + wrote 524288/524288 bytes at offset 0 >> > + 512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) >> > + wrote 524288/524288 bytes at offset 524288 >> > + 512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) >> > ++ read failed: Permission denied >> > +- read 1048576/1048576 bytes at offset 0 >> > +- 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) >> > + >>=20 >> This iotest failing is an intermittent that I've seen running >> pullreqs on master. I tend to see it on the s390 host. I >> suspect a race condition somewhere where it fails if the host >> is heavily loaded. What is weird to me is that I was unable to reproduce it on the previous commit. But with this one happened always. No, I have no clue why, and as said, it makes zero sense, it is for a binary that it is not used on the block test. Later, Juan. > > Since it is known flakey, we should just commit the change > > --- a/tests/qemu-iotests/tests/copy-before-write > +++ b/tests/qemu-iotests/tests/copy-before-write > @@ -1,5 +1,5 @@ > #!/usr/bin/env python3 > -# group: auto backup > +# group: backup > # > # Copyright (c) 2022 Virtuozzo International GmbH > # > > > and if someone wants to re-enable it, they get the job of fixing its > reliability first. > > With regards, > Daniel