From patchwork Thu Nov 2 11:40:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juan Quintela X-Patchwork-Id: 13443634 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id AFD6CC4332F for ; Thu, 2 Nov 2023 11:44:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qyW7C-0007Dz-Jr; Thu, 02 Nov 2023 07:43:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qyW6Q-0004Eq-Ln for qemu-devel@nongnu.org; Thu, 02 Nov 2023 07:43:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qyW6L-0005dd-KN for qemu-devel@nongnu.org; Thu, 02 Nov 2023 07:43:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1698925384; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6nMXgCoVhISLBJNOjtiuvCJB8LXGvZSvy0RxY6VNnQ8=; b=S8rpf6HHMRtvDfs8EIXR0Q+hYqa/Z0SpZrZEmuuuJzkZApwfJAv/LvKmxwdDtdUgEHYMyS mtDsI9KnuB5PrnojrxVs3nghGj4fWrW8JKZb5hMwryNTmD/u0UydOrOWiM2Ue8OHp+jwxS gj2c7oSTt2cSGxVrUokPna+E15/9kRk= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-600-zh0O5OqGOmaFAuQ-9m0-vQ-1; Thu, 02 Nov 2023 07:43:00 -0400 X-MC-Unique: zh0O5OqGOmaFAuQ-9m0-vQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 789CB3806623; Thu, 2 Nov 2023 11:42:58 +0000 (UTC) Received: from secure.mitica (unknown [10.39.195.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id 418212026D4C; Thu, 2 Nov 2023 11:42:51 +0000 (UTC) From: Juan Quintela To: qemu-devel@nongnu.org Cc: Eric Farman , Laurent Vivier , David Gibson , qemu-block@nongnu.org, Stefan Hajnoczi , Marcel Apfelbaum , Kevin Wolf , David Hildenbrand , Samuel Thibault , qemu-s390x@nongnu.org, Richard Henderson , Leonardo Bras , Corey Minyard , Ilya Leoshkevich , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Markus Armbruster , Christian Borntraeger , Eduardo Habkost , Paolo Bonzini , qemu-ppc@nongnu.org, "Michael S. Tsirkin" , Peter Maydell , Halil Pasic , Gerd Hoffmann , =?utf-8?q?C=C3=A9dric_Le_Goater?= , Li Zhijian , Eric Blake , "Denis V. Lunev" , Hanna Reitz , Fabiano Rosas , Stefan Berger , qemu-arm@nongnu.org, Daniel Henrique Barboza , Thomas Huth , Corey Minyard , John Snow , Jeff Cody , Peter Xu , Nicholas Piggin , Juan Quintela , Harsh Prateek Bora , Jason Wang , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Stefan Weil , Mark Cave-Ayland , Fam Zheng Subject: [PULL 15/40] migration: Set downtime_start even for postcopy Date: Thu, 2 Nov 2023 12:40:29 +0100 Message-ID: <20231102114054.44360-16-quintela@redhat.com> In-Reply-To: <20231102114054.44360-1-quintela@redhat.com> References: <20231102114054.44360-1-quintela@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.4 Received-SPF: pass client-ip=170.10.133.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.393, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Peter Xu Postcopy calculates its downtime separately. It always sets MigrationState.downtime properly, but not MigrationState.downtime_start. Make postcopy do the same as other modes on properly recording the timestamp when the VM is going to be stopped. Drop the temporary variable in postcopy_start() along the way. Signed-off-by: Peter Xu Reviewed-by: Fabiano Rosas Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Message-ID: <20231030163346.765724-2-peterx@redhat.com> --- migration/migration.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 6abcbefd9c..6dcdc5be2b 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -2126,7 +2126,6 @@ static int postcopy_start(MigrationState *ms, Error **errp) int ret; QIOChannelBuffer *bioc; QEMUFile *fb; - int64_t time_at_stop = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); uint64_t bandwidth = migrate_max_postcopy_bandwidth(); bool restart_block = false; int cur_state = MIGRATION_STATUS_ACTIVE; @@ -2148,6 +2147,8 @@ static int postcopy_start(MigrationState *ms, Error **errp) qemu_mutex_lock_iothread(); trace_postcopy_start_set_run(); + ms->downtime_start = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); + qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, NULL); global_state_store(); ret = vm_stop_force_state(RUN_STATE_FINISH_MIGRATE); @@ -2250,7 +2251,7 @@ static int postcopy_start(MigrationState *ms, Error **errp) ms->postcopy_after_devices = true; migration_call_notifiers(ms); - ms->downtime = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) - time_at_stop; + ms->downtime = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) - ms->downtime_start; qemu_mutex_unlock_iothread();