From patchwork Wed Jun 27 20:41:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Chen X-Patchwork-Id: 10492615 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 E8F6E60375 for ; Wed, 27 Jun 2018 20:45:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EADCA29EE7 for ; Wed, 27 Jun 2018 20:45:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DD83A29F86; Wed, 27 Jun 2018 20:45:03 +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=-7.8 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID 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 414E729EE7 for ; Wed, 27 Jun 2018 20:45:03 +0000 (UTC) Received: from localhost ([::1]:33107 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fYHJG-0005zu-Ek for patchwork-qemu-devel@patchwork.kernel.org; Wed, 27 Jun 2018 16:45:02 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49336) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fYHGa-0003kZ-25 for qemu-devel@nongnu.org; Wed, 27 Jun 2018 16:42:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fYHGY-0005oQ-Pm for qemu-devel@nongnu.org; Wed, 27 Jun 2018 16:42:16 -0400 Received: from mail-pl0-x235.google.com ([2607:f8b0:400e:c01::235]:40008) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fYHGY-0005n2-I2 for qemu-devel@nongnu.org; Wed, 27 Jun 2018 16:42:14 -0400 Received: by mail-pl0-x235.google.com with SMTP id t6-v6so1593006plo.7 for ; Wed, 27 Jun 2018 13:42:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=TPawtPgLqdrFV1QK3KMsmmn98rew7bufpMNjFbIbc60=; b=JNy8RyINWQEt3+uLqSbV1O1Ii5RAj3ly3vrAlMy/0/dTeoM3JDXXL2iZMwQ7Io8eVE H91i8oCgekQHiiahXUQt9tSbLbL/XcbL5qHt9YF4nW11ehSHg6Iti4a4Jj+qmyU9BCU4 HbT5cT9ON9Gio5w8qIcI7ruV1mF1YYWo4fA7mYQi+Q8MZXOwK9eI7MvAAY5L9XIWY2N3 hrG6tsmjItQbEF6AiTdRiZCAJ9mZNuF1bs9NnN6I3UpkmHlhaOF8SOMfe0cX5Ll/PZ+p Kk0jgg7S4COqL3t5eupUvJCufoyNAog1fc2aGYdXx58RWalquPhQ/I8A93odcFb3YD6W MZmQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=TPawtPgLqdrFV1QK3KMsmmn98rew7bufpMNjFbIbc60=; b=ZnWdXsGomjePWIJyzj7IrVBfb+tsUnkEJLRG3M228p/Mq3fJ/5FPYjAYjIVwzfmvc9 TgHpzyTKfRHx62TZw5U75qRiDZCGseE5xOR1X52zB05fToQPou4k+TzierV2i6WdjKwa nFlBIsTwTkkPl+LfcVlHKDHWql6uadG/KJDugRbkZGMCmcrFNEM77y1/DOIdlqtuCRIf J9FuLAhwR7qrDY00IAMOW0d8jmSJwY6k7sIwUMDH1L3ky4nLQnIezAFUy2Mzex/RBQ79 iWLwjrsyBdv2jv3d5QVMNRMqpSARzzqfji739y+V1XWnvRqvdU0FkCOj0Zrrzn00/Hh3 uPfg== X-Gm-Message-State: APt69E0PohFIw9OGQ7HRQRjWvOma37k5+vcvhvx8AZwlEb9ria8P02Pv Y3t+ZciSZT1NedlFFFcaEgND9Q== X-Google-Smtp-Source: ADUXVKLdRCbgf7Os8hHCb2ghDYun/JrYWhHe/qRx/inGDKeb0uDfJR7NDdO3s2y1XD+WrKFzaKYoGg== X-Received: by 2002:a17:902:b48f:: with SMTP id y15-v6mr7671645plr.261.1530132133237; Wed, 27 Jun 2018 13:42:13 -0700 (PDT) Received: from localhost.localdomain (155.150.229.35.bc.googleusercontent.com. [35.229.150.155]) by smtp.gmail.com with ESMTPSA id c67-v6sm9690428pfj.173.2018.06.27.13.42.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 27 Jun 2018 13:42:12 -0700 (PDT) From: Zhang Chen To: qemu-devel@nongnu.org, Paolo Bonzini , Juan Quintela , "Dr . David Alan Gilbert" , Jason Wang , Eric Blake , Markus Armbruster Date: Thu, 28 Jun 2018 04:41:21 +0800 Message-Id: <20180627204136.4177-6-zhangckid@gmail.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180627204136.4177-1-zhangckid@gmail.com> References: <20180627204136.4177-1-zhangckid@gmail.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c01::235 Subject: [Qemu-devel] [PATCH V9 05/20] COLO: Add block replication into colo process 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: zhanghailiang , Li Zhijian , Zhang Chen Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Make sure master start block replication after slave's block replication started. Besides, we need to activate VM's blocks before goes into COLO state. Signed-off-by: zhanghailiang Signed-off-by: Li Zhijian Signed-off-by: Zhang Chen --- migration/colo.c | 43 +++++++++++++++++++++++++++++++++++++++++++ migration/migration.c | 9 +++++++++ 2 files changed, 52 insertions(+) diff --git a/migration/colo.c b/migration/colo.c index 081df1835f..e06640c3d6 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -27,6 +27,7 @@ #include "replication.h" #include "net/colo-compare.h" #include "net/colo.h" +#include "block/block.h" static bool vmstate_loading; static Notifier packets_compare_notifier; @@ -56,6 +57,7 @@ static void secondary_vm_do_failover(void) { int old_state; MigrationIncomingState *mis = migration_incoming_get_current(); + Error *local_err = NULL; /* Can not do failover during the process of VM's loading VMstate, Or * it will break the secondary VM. @@ -73,6 +75,11 @@ static void secondary_vm_do_failover(void) migrate_set_state(&mis->state, MIGRATION_STATUS_COLO, MIGRATION_STATUS_COMPLETED); + replication_stop_all(true, &local_err); + if (local_err) { + error_report_err(local_err); + } + if (!autostart) { error_report("\"-S\" qemu option will be ignored in secondary side"); /* recover runstate to normal migration finish state */ @@ -110,6 +117,7 @@ static void primary_vm_do_failover(void) { MigrationState *s = migrate_get_current(); int old_state; + Error *local_err = NULL; migrate_set_state(&s->state, MIGRATION_STATUS_COLO, MIGRATION_STATUS_COMPLETED); @@ -133,6 +141,13 @@ static void primary_vm_do_failover(void) FailoverStatus_str(old_state)); return; } + + replication_stop_all(true, &local_err); + if (local_err) { + error_report_err(local_err); + local_err = NULL; + } + /* Notify COLO thread that failover work is finished */ qemu_sem_post(&s->colo_exit_sem); } @@ -356,6 +371,11 @@ static int colo_do_checkpoint_transaction(MigrationState *s, qemu_savevm_state_header(fb); qemu_savevm_state_setup(fb); qemu_mutex_lock_iothread(); + replication_do_checkpoint_all(&local_err); + if (local_err) { + qemu_mutex_unlock_iothread(); + goto out; + } qemu_savevm_state_complete_precopy(fb, false, false); qemu_mutex_unlock_iothread(); @@ -446,6 +466,12 @@ static void colo_process_checkpoint(MigrationState *s) object_unref(OBJECT(bioc)); qemu_mutex_lock_iothread(); + replication_start_all(REPLICATION_MODE_PRIMARY, &local_err); + if (local_err) { + qemu_mutex_unlock_iothread(); + goto out; + } + vm_start(); qemu_mutex_unlock_iothread(); trace_colo_vm_state_change("stop", "run"); @@ -585,6 +611,11 @@ void *colo_process_incoming_thread(void *opaque) object_unref(OBJECT(bioc)); qemu_mutex_lock_iothread(); + replication_start_all(REPLICATION_MODE_SECONDARY, &local_err); + if (local_err) { + qemu_mutex_unlock_iothread(); + goto out; + } vm_start(); trace_colo_vm_state_change("stop", "run"); qemu_mutex_unlock_iothread(); @@ -665,6 +696,18 @@ void *colo_process_incoming_thread(void *opaque) goto out; } + replication_get_error_all(&local_err); + if (local_err) { + qemu_mutex_unlock_iothread(); + goto out; + } + /* discard colo disk buffer */ + replication_do_checkpoint_all(&local_err); + if (local_err) { + qemu_mutex_unlock_iothread(); + goto out; + } + vmstate_loading = false; vm_start(); trace_colo_vm_state_change("stop", "run"); diff --git a/migration/migration.c b/migration/migration.c index a4b478718f..e665a1cab0 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -385,6 +385,7 @@ static void process_incoming_migration_co(void *opaque) MigrationIncomingState *mis = migration_incoming_get_current(); PostcopyState ps; int ret; + Error *local_err = NULL; assert(mis->from_src_file); mis->largest_page_size = qemu_ram_pagesize_largest(); @@ -416,6 +417,14 @@ static void process_incoming_migration_co(void *opaque) /* we get COLO info, and know if we are in COLO mode */ if (!ret && migration_incoming_enable_colo()) { + /* Make sure all file formats flush their mutable metadata */ + bdrv_invalidate_cache_all(&local_err); + if (local_err) { + migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE, + MIGRATION_STATUS_FAILED); + error_report_err(local_err); + exit(EXIT_FAILURE); + } mis->migration_incoming_co = qemu_coroutine_self(); qemu_thread_create(&mis->colo_incoming_thread, "COLO incoming", colo_process_incoming_thread, mis, QEMU_THREAD_JOINABLE);