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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 6DBFAC63793 for ; Thu, 22 Jul 2021 10:47:20 +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 14BCE61289 for ; Thu, 22 Jul 2021 10:47:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 14BCE61289 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]:50846 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m6WEY-0003o2-Rf for qemu-devel@archiver.kernel.org; Thu, 22 Jul 2021 06:47:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57130) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m6WDL-0002D8-3o for qemu-devel@nongnu.org; Thu, 22 Jul 2021 06:46:03 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:54176) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m6WDH-0002Fl-NE for qemu-devel@nongnu.org; Thu, 22 Jul 2021 06:46:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626950758; 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; bh=JEVbe1IxCOK+503Y9bUmDTb805WumH1bGgS2kbjlVPc=; b=Q6WxpcIt+WJjzIXec1cVGCSLyGNL40KRr3zyHfpj5652s28QZJUehdsxLvMXH5aw7R5mua KEqoW70wpQ66niBDy9jwFnVfXGg/5hc9UY8dLj72Qa6VxNMGuqfUyflquycO3kEtdfrbzR hsOHwSl+B8MqgxrHpqtuy+jr1G80Bro= 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-184-_m6F254QMhOCw_8Y13pvVw-1; Thu, 22 Jul 2021 06:45:56 -0400 X-MC-Unique: _m6F254QMhOCw_8Y13pvVw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A86831932481; Thu, 22 Jul 2021 10:45:55 +0000 (UTC) Received: from pick.home.annexia.org (ovpn-114-133.ams2.redhat.com [10.36.114.133]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9089E797C0; Thu, 22 Jul 2021 10:45:54 +0000 (UTC) From: "Richard W.M. Jones" To: vsementsov@virtuozzo.com Subject: [PATCH] nbd/server: Suppress Broken pipe errors on abrupt disconnection Date: Thu, 22 Jul 2021 11:45:51 +0100 Message-Id: <20210722104552.2351167-1-rjones@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=rjones@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=170.10.133.124; envelope-from=rjones@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.459, 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_H4=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: eblake@redhat.com, qemu-devel@nongnu.org, qemu-block@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This simple patch suppresses a warning message from qemu-nbd when a client abruptly disconnects. There is a way to work around this in the client (by shutting down the connection properly). Nevertheless the "Broken pipe" error seems unnecessary to me as it does not convey any useful information and might be used to fill up logs. Rich.