From patchwork Thu Nov 16 02:33:43 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: fangying X-Patchwork-Id: 10060603 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2D23D6019D for ; Thu, 16 Nov 2017 02:35:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0AF432858E for ; Thu, 16 Nov 2017 02:35:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F3C4D2A5C7; Thu, 16 Nov 2017 02:35:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 80EED2858E for ; Thu, 16 Nov 2017 02:35:55 +0000 (UTC) Received: from localhost ([::1]:38669 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eFA1y-0003iB-TM for patchwork-qemu-devel@patchwork.kernel.org; Wed, 15 Nov 2017 21:35:54 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48158) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eFA1M-0003fu-A6 for qemu-devel@nongnu.org; Wed, 15 Nov 2017 21:35:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eFA1J-000433-39 for qemu-devel@nongnu.org; Wed, 15 Nov 2017 21:35:16 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:2294) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1eFA1I-0003z4-EE for qemu-devel@nongnu.org; Wed, 15 Nov 2017 21:35:12 -0500 Received: from 172.30.72.60 (EHLO DGGEMS409-HUB.china.huawei.com) ([172.30.72.60]) by dggrg05-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id DLA80781; Thu, 16 Nov 2017 10:35:03 +0800 (CST) Received: from localhost (10.177.223.127) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.361.1; Thu, 16 Nov 2017 10:34:56 +0800 From: fangying To: , , Date: Thu, 16 Nov 2017 10:33:43 +0800 Message-ID: <20171116023343.2756-1-fangying1@huawei.com> X-Mailer: git-send-email 2.10.0.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.177.223.127] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.5A0CF958.00CC, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: cfb56102b7e0a35995e73d7d28de0008 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 45.249.212.191 Subject: [Qemu-devel] [PATCH v2] vhost: Cancel migration when vhost-user process restarted during migration X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ying Fang , quintela@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Ying Fang QEMU will abort when vhost-user process is restarted during migration when vhost_log_global_start/stop is called. The reason is clear that vhost_dev_set_log returns -1 because network connection is temporarily lost. To handle this situation, let's cancel migration and report it to user. Signed-off-by: Ying Fang --- hw/virtio/vhost.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index ddc42f0..a9d1895 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -27,6 +27,7 @@ #include "hw/virtio/virtio-access.h" #include "migration/blocker.h" #include "sysemu/dma.h" +#include "migration/migration.h" /* enabled until disconnected backend stabilizes */ #define _VHOST_DEBUG 1 @@ -882,20 +883,24 @@ static int vhost_migration_log(MemoryListener *listener, int enable) static void vhost_log_global_start(MemoryListener *listener) { int r; + Error *errp = NULL; r = vhost_migration_log(listener, true); if (r < 0) { - abort(); + error_setg(&errp, "Failed to start vhost migration log"); + migrate_fd_error(migrate_get_current(), errp); } } static void vhost_log_global_stop(MemoryListener *listener) { int r; + Error *errp = NULL; r = vhost_migration_log(listener, false); if (r < 0) { - abort(); + error_setg(&errp, "Failed to stop vhost migration log"); + migrate_fd_error(migrate_get_current(), errp); } }