From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0EAECC4361B for ; Thu, 10 Dec 2020 13:23:24 +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 90E1923DE8 for ; Thu, 10 Dec 2020 13:23:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 90E1923DE8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:58616 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1knLuk-0002Ay-Jp for qemu-devel@archiver.kernel.org; Thu, 10 Dec 2020 08:23:22 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:37800) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1knLRC-00036T-V7 for qemu-devel@nongnu.org; Thu, 10 Dec 2020 07:52:51 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:32767) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1knLRA-0001p5-8K for qemu-devel@nongnu.org; Thu, 10 Dec 2020 07:52:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607604766; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=JxXZJLREWm3t9F17WA4TqEWeB4+MCEkNegI1V45TngA=; b=XQNjMA0ccKkXjCEJeJN2XOVxWRHnIZGhSASM49TgDF1AL18iJVNg3Y10Tc7ulJh72qDXVe pLyZWjFa3fm8PxYKfDDcoa9eoEsL+23ZKjJ/+chPXXZImCmDKn1qeQ1694jBDKaS37cB4G 9F6n+RI0Kw03RNqFmzfqvFp+tEQMxbQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-497-N3Up37c-Oair9fA0kf-eZg-1; Thu, 10 Dec 2020 07:52:42 -0500 X-MC-Unique: N3Up37c-Oair9fA0kf-eZg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D3E4A100C660; Thu, 10 Dec 2020 12:52:41 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-103.ams2.redhat.com [10.36.112.103]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7EC4D6F439; Thu, 10 Dec 2020 12:52:38 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id EE0BA11336D6; Thu, 10 Dec 2020 13:52:36 +0100 (CET) From: Markus Armbruster To: Andrey Gruzdev via Subject: Re: [PATCH v6 1/4] migration: introduce 'background-snapshot' migration capability References: <20201209100811.190316-1-andrey.gruzdev@virtuozzo.com> <20201209100811.190316-2-andrey.gruzdev@virtuozzo.com> Date: Thu, 10 Dec 2020 13:52:36 +0100 In-Reply-To: <20201209100811.190316-2-andrey.gruzdev@virtuozzo.com> (Andrey Gruzdev via's message of "Wed, 9 Dec 2020 13:08:08 +0300") Message-ID: <878sa5su0b.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Received-SPF: pass client-ip=216.205.24.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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 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: , Cc: Juan Quintela , "Dr . David Alan Gilbert" , Peter Xu , Paolo Bonzini , Den Lunev , Andrey Gruzdev Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Andrey Gruzdev via writes: > Add new capability to 'qapi/migration.json' schema. > Update migrate_caps_check() to validate enabled capability set > against introduced one. Perform checks for required kernel features > and compatibility with guest memory backends. > > Signed-off-by: Andrey Gruzdev > Reviewed-by: Peter Xu [...] > diff --git a/qapi/migration.json b/qapi/migration.json > index 3c75820527..6291143678 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) > # > +# @background-snapshot: 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 6.0) > +# > # 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', 'background-snapshot'] } > > ## > # @MigrationCapabilityStatus: Acked-by: Markus Armbruster