From patchwork Tue Dec 29 07:09:05 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhanghailiang X-Patchwork-Id: 561448 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 97FB9140BF4 for ; Tue, 29 Dec 2015 18:17:39 +1100 (AEDT) Received: from localhost ([::1]:47372 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aDoXJ-0000US-Bc for incoming@patchwork.ozlabs.org; Tue, 29 Dec 2015 02:17:37 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45530) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aDoRP-0005qM-8L for qemu-devel@nongnu.org; Tue, 29 Dec 2015 02:11:32 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aDoRM-00071q-1g for qemu-devel@nongnu.org; Tue, 29 Dec 2015 02:11:31 -0500 Received: from szxga01-in.huawei.com ([58.251.152.64]:52312) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aDoRL-000708-7w for qemu-devel@nongnu.org; Tue, 29 Dec 2015 02:11:27 -0500 Received: from 172.24.1.47 (EHLO szxeml422-hub.china.huawei.com) ([172.24.1.47]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DBV44639; Tue, 29 Dec 2015 15:11:06 +0800 (CST) Received: from localhost (10.177.24.212) by szxeml422-hub.china.huawei.com (10.82.67.152) with Microsoft SMTP Server id 14.3.235.1; Tue, 29 Dec 2015 15:10:38 +0800 From: zhanghailiang To: Date: Tue, 29 Dec 2015 15:09:05 +0800 Message-ID: <1451372975-5048-10-git-send-email-zhang.zhanghailiang@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1451372975-5048-1-git-send-email-zhang.zhanghailiang@huawei.com> References: <1451372975-5048-1-git-send-email-zhang.zhanghailiang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.24.212] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020202.5682320F.0107, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: eb114848d002acc46ac2d7b77d584122 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 58.251.152.64 Cc: xiecl.fnst@cn.fujitsu.com, lizhijian@cn.fujitsu.com, quintela@redhat.com, yunhong.jiang@intel.com, eddie.dong@intel.com, peter.huangpeng@huawei.com, dgilbert@redhat.com, zhanghailiang , arei.gonglei@huawei.com, stefanha@redhat.com, amit.shah@redhat.com, zhangchen.fnst@cn.fujitsu.com, hongyang.yang@easystack.cn Subject: [Qemu-devel] [PATCH COLO-Frame v13 09/39] COLO/migration: Create a new communication path from destination to source X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This new communication path will be used for returning messages from destination to source. Signed-off-by: zhanghailiang Signed-off-by: Li Zhijian Reviewed-by: Dr. David Alan Gilbert --- v13: - Remove useless error report v12: - Add Reviewed-by tag v11: - Rebase master to use qemu_file_get_return_path() for opening return path v10: - fix the the error log (Dave's suggestion). --- migration/colo.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/migration/colo.c b/migration/colo.c index 6880aa0..65ac0c9 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -36,6 +36,12 @@ bool migration_incoming_in_colo_state(void) static void colo_process_checkpoint(MigrationState *s) { + s->rp_state.from_dst_file = qemu_file_get_return_path(s->to_dst_file); + if (!s->rp_state.from_dst_file) { + error_report("Open QEMUFile from_dst_file failed"); + goto out; + } + qemu_mutex_lock_iothread(); vm_start(); qemu_mutex_unlock_iothread(); @@ -43,8 +49,13 @@ static void colo_process_checkpoint(MigrationState *s) /*TODO: COLO checkpoint savevm loop*/ +out: migrate_set_state(&s->state, MIGRATION_STATUS_COLO, MIGRATION_STATUS_COMPLETED); + + if (s->rp_state.from_dst_file) { + qemu_fclose(s->rp_state.from_dst_file); + } } void migrate_start_colo_process(MigrationState *s) @@ -63,8 +74,23 @@ void *colo_process_incoming_thread(void *opaque) migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE, MIGRATION_STATUS_COLO); + mis->to_src_file = qemu_file_get_return_path(mis->from_src_file); + if (!mis->to_src_file) { + error_report("colo incoming thread: Open QEMUFile to_src_file failed"); + goto out; + } + /* Note: We set the fd to unblocked in migration incoming coroutine, + * But here we are in the colo incoming thread, so it is ok to set the + * fd back to blocked. + */ + qemu_file_set_blocking(mis->from_src_file, true); + /* TODO: COLO checkpoint restore loop */ +out: + if (mis->to_src_file) { + qemu_fclose(mis->to_src_file); + } migration_incoming_exit_colo(); return NULL;