From patchwork Thu Feb 28 16:55:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Chen X-Patchwork-Id: 10833509 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F8CD17E9 for ; Thu, 28 Feb 2019 17:09:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 520322F1AA for ; Thu, 28 Feb 2019 17:09:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 502C72F2F1; Thu, 28 Feb 2019 17:09:21 +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=0.1 required=2.0 tests=BAYES_00,FROM_ADDR_WS, FROM_WSP_TRAIL,MAILING_LIST_MULTI autolearn=no version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 03A752F1AA for ; Thu, 28 Feb 2019 17:09:21 +0000 (UTC) Received: from localhost ([127.0.0.1]:43250 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gzPBQ-0005HJ-7x for patchwork-qemu-devel@patchwork.kernel.org; Thu, 28 Feb 2019 12:09:20 -0500 Received: from eggs.gnu.org ([209.51.188.92]:57008) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gzP1W-0005fE-UT for qemu-devel@nongnu.org; Thu, 28 Feb 2019 11:59:07 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gzP1M-0007Rz-OC for qemu-devel@nongnu.org; Thu, 28 Feb 2019 11:59:02 -0500 Received: from mga17.intel.com ([192.55.52.151]:63424) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gzP1D-0007LG-Cs for qemu-devel@nongnu.org; Thu, 28 Feb 2019 11:58:49 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Feb 2019 08:58:45 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,423,1544515200"; d="scan'208";a="142431800" Received: from unknown (HELO localhost.localdomain) ([10.239.13.19]) by orsmga001.jf.intel.com with ESMTP; 28 Feb 2019 08:58:43 -0800 From: Zhang Chen To: Li Zhijian , Zhang Chen , "Dr. David Alan Gilbert" , Juan Quintela , zhanghailiang , Markus Armbruster , Eric Blake , qemu-dev Date: Fri, 1 Mar 2019 00:55:08 +0800 Message-Id: <20190228165508.21594-8-chen.zhang@intel.com> X-Mailer: git-send-email 2.17.GIT In-Reply-To: <20190228165508.21594-1-chen.zhang@intel.com> References: <20190228165508.21594-1-chen.zhang@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.151 Subject: [Qemu-devel] [PATCH V2 7/7] Migration/colo.c: Make user obtain the COLO mode info after failover 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: Zhang Chen Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Zhang Chen Add the last_colo_mode to save the status after failover. This patch can solve the issue that user got nothing to call query_colo_status after failover. Signed-off-by: Zhang Chen --- migration/colo.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) diff --git a/migration/colo.c b/migration/colo.c index d1ae2e6d11..6eba8e06f2 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -38,6 +38,9 @@ static bool vmstate_loading; static Notifier packets_compare_notifier; +/* User need to know colo mode after COLO failover */ +static COLOMode last_colo_mode; + #define COLO_BUFFER_BASE_SIZE (4 * 1024 * 1024) bool migration_in_colo_state(void) @@ -197,7 +200,10 @@ void colo_do_failover(MigrationState *s) vm_stop_force_state(RUN_STATE_COLO); } - switch (get_colo_mode()) { + /* Update last_COLO_mode to avoid unexpectedly exit COLO status */ + last_colo_mode = get_colo_mode(); + + switch (last_colo_mode) { case COLO_MODE_PRIMARY: primary_vm_do_failover(); break; @@ -263,7 +269,7 @@ COLOStatus *qmp_query_colo_status(Error **errp) { COLOStatus *s = g_new0(COLOStatus, 1); - s->mode = get_colo_mode(); + s->mode = last_colo_mode; switch (failover_get_state()) { case FAILOVER_STATUS_NONE: @@ -515,6 +521,12 @@ static void colo_process_checkpoint(MigrationState *s) Error *local_err = NULL; int ret; + last_colo_mode = get_colo_mode(); + if (last_colo_mode != COLO_MODE_PRIMARY) { + error_report("COLO mode must be COLO_MODE_PRIMARY"); + return; + } + failover_init_state(); s->rp_state.from_dst_file = qemu_file_get_return_path(s->to_dst_file); @@ -682,12 +694,18 @@ void *colo_process_incoming_thread(void *opaque) Error *local_err = NULL; int ret; - rcu_register_thread(); - qemu_sem_init(&mis->colo_incoming_sem, 0); - migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE, MIGRATION_STATUS_COLO); + last_colo_mode = get_colo_mode(); + if (last_colo_mode != COLO_MODE_SECONDARY) { + error_report("COLO mode must be COLO_MODE_SECONDARY"); + return NULL; + } + + rcu_register_thread(); + qemu_sem_init(&mis->colo_incoming_sem, 0); + failover_init_state(); mis->to_src_file = qemu_file_get_return_path(mis->from_src_file);