From patchwork Wed Nov 18 11:22:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Gruzdev X-Patchwork-Id: 11914875 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 710FBA6A for ; Wed, 18 Nov 2020 11:30:36 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1BEC72080A for ; Wed, 18 Nov 2020 11:30:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1BEC72080A Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=nongnu.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:38130 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kfLfX-0005Jp-0w for patchwork-qemu-devel@patchwork.kernel.org; Wed, 18 Nov 2020 06:30:35 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:36652) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kfLY3-000574-Nk for qemu-devel@nongnu.org; Wed, 18 Nov 2020 06:22:53 -0500 Received: from relay.sw.ru ([185.231.240.75]:41852 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kfLXq-0003Oj-MC for qemu-devel@nongnu.org; Wed, 18 Nov 2020 06:22:51 -0500 Received: from [192.168.15.76] (helo=andrey-MS-7B54.sw.ru) by relay3.sw.ru with esmtp (Exim 4.94) (envelope-from ) id 1kfLXa-009A89-VF; Wed, 18 Nov 2020 14:22:22 +0300 To: qemu-devel@nongnu.org Cc: Den Lunev , Eric Blake , Paolo Bonzini , Juan Quintela , "Dr . David Alan Gilbert" , Markus Armbruster , Andrey Gruzdev Subject: [PATCH 1/7] Introduce 'track-writes-ram' migration capability. Date: Wed, 18 Nov 2020 14:22:27 +0300 Message-Id: <20201118112233.264530-2-andrey.gruzdev@virtuozzo.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201118112233.264530-1-andrey.gruzdev@virtuozzo.com> References: <20201118112233.264530-1-andrey.gruzdev@virtuozzo.com> MIME-Version: 1.0 Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.gruzdev@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/18 06:22:34 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Reply-to: Andrey Gruzdev X-Patchwork-Original-From: Andrey Gruzdev via From: Andrey Gruzdev Signed-off-by: Andrey Gruzdev --- migration/migration.c | 96 +++++++++++++++++++++++++++++++++++++++++++ migration/migration.h | 1 + qapi/migration.json | 7 +++- 3 files changed, 103 insertions(+), 1 deletion(-) diff --git a/migration/migration.c b/migration/migration.c index 87a9b59f83..ff0364dde0 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -56,6 +56,7 @@ #include "net/announce.h" #include "qemu/queue.h" #include "multifd.h" +#include "sysemu/cpus.h" #ifdef CONFIG_VFIO #include "hw/vfio/vfio-common.h" @@ -1165,6 +1166,91 @@ static bool migrate_caps_check(bool *cap_list, } } + if (cap_list[MIGRATION_CAPABILITY_TRACK_WRITES_RAM]) { + if (cap_list[MIGRATION_CAPABILITY_POSTCOPY_RAM]) { + error_setg(errp, + "Track-writes is not compatible with postcopy-ram"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_DIRTY_BITMAPS]) { + error_setg(errp, + "Track-writes is not compatible with dirty-bitmaps"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME]) { + error_setg(errp, + "Track-writes is not compatible with postcopy-blocktime"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_LATE_BLOCK_ACTIVATE]) { + error_setg(errp, + "Track-writes is not compatible with late-block-activate"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_RETURN_PATH]) { + error_setg(errp, + "Track-writes is not compatible with return-path"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_MULTIFD]) { + error_setg(errp, "Track-writes is not compatible with multifd"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_PAUSE_BEFORE_SWITCHOVER]) { + error_setg(errp, + "Track-writes is not compatible with pause-before-switchover"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_AUTO_CONVERGE]) { + error_setg(errp, + "Track-writes is not compatible with auto-converge"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_RELEASE_RAM]) { + error_setg(errp, + "Track-writes is not compatible with release-ram"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_RDMA_PIN_ALL]) { + error_setg(errp, + "Track-writes is not compatible with rdma-pin-all"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_COMPRESS]) { + error_setg(errp, + "Track-writes is not compatible with compression"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_XBZRLE]) { + error_setg(errp, + "Track-writes is not compatible with XBZLRE"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_X_COLO]) { + error_setg(errp, + "Track-writes is not compatible with x-colo"); + return false; + } + + if (cap_list[MIGRATION_CAPABILITY_VALIDATE_UUID]) { + error_setg(errp, + "Track-writes is not compatible with validate-uuid"); + return false; + } + } + return true; } @@ -2490,6 +2576,15 @@ bool migrate_use_block_incremental(void) return s->parameters.block_incremental; } +bool migrate_track_writes_ram(void) +{ + MigrationState *s; + + s = migrate_get_current(); + + return s->enabled_capabilities[MIGRATION_CAPABILITY_TRACK_WRITES_RAM]; +} + /* migration thread support */ /* * Something bad happened to the RP stream, mark an error @@ -3783,6 +3878,7 @@ static Property migration_properties[] = { DEFINE_PROP_MIG_CAP("x-block", MIGRATION_CAPABILITY_BLOCK), DEFINE_PROP_MIG_CAP("x-return-path", MIGRATION_CAPABILITY_RETURN_PATH), DEFINE_PROP_MIG_CAP("x-multifd", MIGRATION_CAPABILITY_MULTIFD), + DEFINE_PROP_MIG_CAP("x-track-writes-ram", MIGRATION_CAPABILITY_TRACK_WRITES_RAM), DEFINE_PROP_END_OF_LIST(), }; diff --git a/migration/migration.h b/migration/migration.h index d096b77f74..339ae720e0 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -341,6 +341,7 @@ int migrate_compress_wait_thread(void); int migrate_decompress_threads(void); bool migrate_use_events(void); bool migrate_postcopy_blocktime(void); +bool migrate_track_writes_ram(void); /* Sending on the return path - generic and then for each message type */ void migrate_send_rp_shut(MigrationIncomingState *mis, diff --git a/qapi/migration.json b/qapi/migration.json index 3c75820527..03fe0547f1 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -442,6 +442,11 @@ # @validate-uuid: Send the UUID of the source to allow the destination # to ensure it is the same. (since 4.2) # +# @track-writes-ram: If enabled, the migration stream will be a snapshot +# of the VM exactly at the point when the migration +# procedure starts. The VM RAM is saved with running VM. +# (since 5.2) +# # Since: 1.2 ## { 'enum': 'MigrationCapability', @@ -449,7 +454,7 @@ 'compress', 'events', 'postcopy-ram', 'x-colo', 'release-ram', 'block', 'return-path', 'pause-before-switchover', 'multifd', 'dirty-bitmaps', 'postcopy-blocktime', 'late-block-activate', - 'x-ignore-shared', 'validate-uuid' ] } + 'x-ignore-shared', 'validate-uuid', 'track-writes-ram'] } ## # @MigrationCapabilityStatus: