From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8BCFEC433E6 for ; Tue, 12 Jan 2021 11:18:33 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DE64F23102 for ; Tue, 12 Jan 2021 11:18:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DE64F23102 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53010 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kzHh1-0007GH-M5 for qemu-devel@archiver.kernel.org; Tue, 12 Jan 2021 06:18:31 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:54846) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kzHIe-0004hy-RO for qemu-devel@nongnu.org; Tue, 12 Jan 2021 05:53:20 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:47555) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kzHIc-0005zb-Eh for qemu-devel@nongnu.org; Tue, 12 Jan 2021 05:53:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1610448796; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IBovUTgDaYL5b2D7RW+bh3eg/qaX3RMteCV0hxOBNHw=; b=VqIJvXsBdaS7rNhtrQCxJzilWrMk4/jQPwo4ATruo8o+aezEWGA5W5Y1HUTndtJYW1R0aD C5o5wUPNSGbojUue+19mkuFvn4PPrkyNSwkVEVCrgT/QLAEj2EEnVtlOCOGTQeyAu7IVz2 w80XfgDuzTk7PMB4p1PJhJF202UKoig= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-517-e6I2369oOKyahP9hIr2niQ-1; Tue, 12 Jan 2021 05:53:14 -0500 X-MC-Unique: e6I2369oOKyahP9hIr2niQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 09029107ACF8; Tue, 12 Jan 2021 10:53:13 +0000 (UTC) Received: from gondolin (ovpn-114-102.ams2.redhat.com [10.36.114.102]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4E4585D9CD; Tue, 12 Jan 2021 10:53:08 +0000 (UTC) Date: Tue, 12 Jan 2021 11:53:05 +0100 From: Cornelia Huck To: Thomas Huth Subject: Re: [PATCH] tests/acceptance: Fix race conditions in s390x tests & skip fedora on gitlab-CI Message-ID: <20210112115305.1cd5b8c5.cohuck@redhat.com> In-Reply-To: <20210108185645.86351-1-thuth@redhat.com> References: <20210108185645.86351-1-thuth@redhat.com> Organization: Red Hat GmbH MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=cohuck@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=cohuck@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.251, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alex =?UTF-8?B?QmVubsOpZQ==?= , qemu-devel@nongnu.org, Wainer dos Santos Moschetta , Halil Pasic , Christian Borntraeger , qemu-s390x@nongnu.org, Cleber Rosa , Philippe =?UTF-8?B?TWF0aGlldS1EYXVkw6k=?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, 8 Jan 2021 19:56:45 +0100 Thomas Huth wrote: > There was a race condition in the first test where there was already the > "crw" output in the dmesg, but the "0.0.4711" entry has not been created > in the /sys fs yet. Fix it by waiting until it is there. > > The second test has even more problems on gitlab-CI. Even after adding some > more synchronization points (that wait for some messages in the "dmesg" > output to make sure that the modules got loaded correctly), there are still > occasionally some hangs in this test when it is running in the gitlab-CI. > So far I was unable to reproduce these hangs locally on my computer, so > this issue might take a while to debug. Thus disable the 2nd test in the > gitlab-CI until the problems are better understood and fixed. > > Signed-off-by: Thomas Huth > --- > tests/acceptance/machine_s390_ccw_virtio.py | 14 ++++++++++++-- > 1 file changed, 12 insertions(+), 2 deletions(-) > > diff --git a/tests/acceptance/machine_s390_ccw_virtio.py b/tests/acceptance/machine_s390_ccw_virtio.py > index eccf26b262..4028c99afc 100644 > --- a/tests/acceptance/machine_s390_ccw_virtio.py > +++ b/tests/acceptance/machine_s390_ccw_virtio.py > @@ -12,6 +12,7 @@ > import os > import tempfile > > +from avocado import skipIf > from avocado_qemu import Test > from avocado_qemu import exec_command_and_wait_for_pattern > from avocado_qemu import wait_for_console_pattern > @@ -133,8 +134,10 @@ class S390CCWVirtioMachine(Test): > self.vm.command('device_add', driver='virtio-net-ccw', > devno='fe.0.4711', id='net_4711') > self.wait_for_crw_reports() > - exec_command_and_wait_for_pattern(self, 'ls /sys/bus/ccw/devices/', > - '0.0.4711') > + exec_command_and_wait_for_pattern(self, 'for i in 1 2 3 4 5 6 7 ; do ' > + 'if [ -e /sys/bus/ccw/devices/*4711 ]; then break; fi ;' > + 'sleep 1 ; done ; ls /sys/bus/ccw/devices/', > + '0.0.4711') I'm wondering whether we should introduce a generic helper function for "execute command repeatedly, if the expected result did not yet show up", or "wait for a file/directory to exist". It's probably not uncommon for a desired outcome to arrive asynchronously, and having a function for waiting/retrying could be handy. > # and detach it again > self.clear_guest_dmesg() > self.vm.command('device_del', id='net_4711')