From patchwork Tue Oct 18 12:10:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhanghailiang X-Patchwork-Id: 9382019 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 5E91060839 for ; Tue, 18 Oct 2016 12:14:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4F01D2959F for ; Tue, 18 Oct 2016 12:14:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 436E7295A4; Tue, 18 Oct 2016 12:14:03 +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 87BEE2959F for ; Tue, 18 Oct 2016 12:14:02 +0000 (UTC) Received: from localhost ([::1]:41058 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bwTHN-0000NX-9Y for patchwork-qemu-devel@patchwork.kernel.org; Tue, 18 Oct 2016 08:14:01 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36443) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bwTEt-0006vp-DC for qemu-devel@nongnu.org; Tue, 18 Oct 2016 08:11:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bwTEp-00056q-JE for qemu-devel@nongnu.org; Tue, 18 Oct 2016 08:11:27 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:20978) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1bwTEp-00055G-1c for qemu-devel@nongnu.org; Tue, 18 Oct 2016 08:11:23 -0400 Received: from 172.24.1.60 (EHLO SZXEML423-HUB.china.huawei.com) ([172.24.1.60]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id CJR35535; Tue, 18 Oct 2016 20:11:06 +0800 (CST) Received: from localhost (10.177.24.212) by SZXEML423-HUB.china.huawei.com (10.82.67.154) with Microsoft SMTP Server id 14.3.235.1; Tue, 18 Oct 2016 20:10:55 +0800 From: zhanghailiang To: , Date: Tue, 18 Oct 2016 20:10:11 +0800 Message-ID: <1476792613-11712-16-git-send-email-zhang.zhanghailiang@huawei.com> X-Mailer: git-send-email 2.7.2.windows.1 In-Reply-To: <1476792613-11712-1-git-send-email-zhang.zhanghailiang@huawei.com> References: <1476792613-11712-1-git-send-email-zhang.zhanghailiang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.24.212] X-CFilter-Loop: Reflected X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 119.145.14.66 Subject: [Qemu-devel] [PATCH COLO-Frame (Base) v21 15/17] COLO: Implement failover work for secondary VM 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: xiecl.fnst@cn.fujitsu.com, zhanghailiang , lizhijian@cn.fujitsu.com, qemu-devel@nongnu.org, dgilbert@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP If users require SVM to takeover work, COLO incoming thread should exit from loop while failover BH helps backing to migration incoming coroutine. Signed-off-by: zhanghailiang Signed-off-by: Li Zhijian Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Amit Shah --- v20: - Rebase to master v12: - Improve error message that suggested by Dave - Add Reviewed-by tag --- migration/colo.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/migration/colo.c b/migration/colo.c index afd5de5..31664e0 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -46,6 +46,33 @@ static bool colo_runstate_is_stopped(void) return runstate_check(RUN_STATE_COLO) || !runstate_is_running(); } +static void secondary_vm_do_failover(void) +{ + int old_state; + MigrationIncomingState *mis = migration_incoming_get_current(); + + migrate_set_state(&mis->state, MIGRATION_STATUS_COLO, + MIGRATION_STATUS_COMPLETED); + + if (!autostart) { + error_report("\"-S\" qemu option will be ignored in secondary side"); + /* recover runstate to normal migration finish state */ + autostart = true; + } + + old_state = failover_set_state(FAILOVER_STATUS_ACTIVE, + FAILOVER_STATUS_COMPLETED); + if (old_state != FAILOVER_STATUS_ACTIVE) { + error_report("Incorrect state (%s) while doing failover for " + "secondary VM", FailoverStatus_lookup[old_state]); + return; + } + /* For Secondary VM, jump to incoming co */ + if (mis->migration_incoming_co) { + qemu_coroutine_enter(mis->migration_incoming_co); + } +} + static void primary_vm_do_failover(void) { MigrationState *s = migrate_get_current(); @@ -72,6 +99,8 @@ void colo_do_failover(MigrationState *s) if (get_colo_mode() == COLO_MODE_PRIMARY) { primary_vm_do_failover(); + } else { + secondary_vm_do_failover(); } } @@ -416,6 +445,11 @@ void *colo_process_incoming_thread(void *opaque) goto out; } assert(request); + if (failover_get_state() != FAILOVER_STATUS_NONE) { + error_report("failover request"); + goto out; + } + /* FIXME: This is unnecessary for periodic checkpoint mode */ colo_send_message(mis->to_src_file, COLO_MESSAGE_CHECKPOINT_REPLY, &local_err);