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=-5.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 D3770C4CEC6 for ; Thu, 12 Sep 2019 14:30:56 +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 A8FAC20663 for ; Thu, 12 Sep 2019 14:30:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A8FAC20663 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]:35200 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i8Q7b-0002Ec-Js for qemu-devel@archiver.kernel.org; Thu, 12 Sep 2019 10:30:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47147) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i8Q6T-0001Ew-NR for qemu-devel@nongnu.org; Thu, 12 Sep 2019 10:29:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i8Q6R-0002fC-P0 for qemu-devel@nongnu.org; Thu, 12 Sep 2019 10:29:44 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43428) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i8Q6R-0002ef-Gl for qemu-devel@nongnu.org; Thu, 12 Sep 2019 10:29:43 -0400 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 mx1.redhat.com (Postfix) with ESMTPS id A8D33A3718B for ; Thu, 12 Sep 2019 14:29:42 +0000 (UTC) Received: from [10.3.116.234] (ovpn-116-234.phx2.redhat.com [10.3.116.234]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A0AEF600C8; Thu, 12 Sep 2019 14:29:28 +0000 (UTC) To: =?UTF-8?Q?Marc-Andr=c3=a9_Lureau?= , qemu-devel@nongnu.org References: <20190912122514.22504-1-marcandre.lureau@redhat.com> <20190912122514.22504-7-marcandre.lureau@redhat.com> From: Eric Blake Openpgp: preference=signencrypt Autocrypt: addr=eblake@redhat.com; keydata= xsBNBEvHyWwBCACw7DwsQIh0kAbUXyqhfiKAKOTVu6OiMGffw2w90Ggrp4bdVKmCaEXlrVLU xphBM8mb+wsFkU+pq9YR621WXo9REYVIl0FxKeQo9dyQBZ/XvmUMka4NOmHtFg74nvkpJFCD TUNzmqfcjdKhfFV0d7P/ixKQeZr2WP1xMcjmAQY5YvQ2lUoHP43m8TtpB1LkjyYBCodd+LkV GmCx2Bop1LSblbvbrOm2bKpZdBPjncRNob73eTpIXEutvEaHH72LzpzksfcKM+M18cyRH+nP sAd98xIbVjm3Jm4k4d5oQyE2HwOur+trk2EcxTgdp17QapuWPwMfhaNq3runaX7x34zhABEB AAHNHkVyaWMgQmxha2UgPGVibGFrZUByZWRoYXQuY29tPsLAegQTAQgAJAIbAwULCQgHAwUV CgkICwUWAgMBAAIeAQIXgAUCS8fL9QIZAQAKCRCnoWtKJSdDahBHCACbl/5FGkUqJ89GAjeX RjpAeJtdKhujir0iS4CMSIng7fCiGZ0fNJCpL5RpViSo03Q7l37ss+No+dJI8KtAp6ID+PMz wTJe5Egtv/KGUKSDvOLYJ9WIIbftEObekP+GBpWP2+KbpADsc7EsNd70sYxExD3liwVJYqLc Rw7so1PEIFp+Ni9A1DrBR5NaJBnno2PHzHPTS9nmZVYm/4I32qkLXOcdX0XElO8VPDoVobG6 gELf4v/vIImdmxLh/w5WctUpBhWWIfQDvSOW2VZDOihm7pzhQodr3QP/GDLfpK6wI7exeu3P pfPtqwa06s1pae3ad13mZGzkBdNKs1HEm8x6zsBNBEvHyWwBCADGkMFzFjmmyqAEn5D+Mt4P zPdO8NatsDw8Qit3Rmzu+kUygxyYbz52ZO40WUu7EgQ5kDTOeRPnTOd7awWDQcl1gGBXgrkR pAlQ0l0ReO57Q0eglFydLMi5bkwYhfY+TwDPMh3aOP5qBXkm4qIYSsxb8A+i00P72AqFb9Q7 3weG/flxSPApLYQE5qWGSXjOkXJv42NGS6o6gd4RmD6Ap5e8ACo1lSMPfTpGzXlt4aRkBfvb NCfNsQikLZzFYDLbQgKBA33BDeV6vNJ9Cj0SgEGOkYyed4I6AbU0kIy1hHAm1r6+sAnEdIKj cHi3xWH/UPrZW5flM8Kqo14OTDkI9EtlABEBAAHCwF8EGAEIAAkFAkvHyWwCGwwACgkQp6Fr SiUnQ2q03wgAmRFGDeXzc58NX0NrDijUu0zx3Lns/qZ9VrkSWbNZBFjpWKaeL1fdVeE4TDGm I5mRRIsStjQzc2R9b+2VBUhlAqY1nAiBDv0Qnt+9cLiuEICeUwlyl42YdwpmY0ELcy5+u6wz mK/jxrYOpzXKDwLq5k4X+hmGuSNWWAN3gHiJqmJZPkhFPUIozZUCeEc76pS/IUN72NfprZmF Dp6/QDjDFtfS39bHSWXKVZUbqaMPqlj/z6Ugk027/3GUjHHr8WkeL1ezWepYDY7WSoXwfoAL 2UXYsMAr/uUncSKlfjvArhsej0S4zbqim2ZY6S8aRWw94J3bSvJR+Nwbs34GPTD4Pg== Organization: Red Hat, Inc. Message-ID: <23b51e64-a68e-e285-2bcd-82e5c0a9817f@redhat.com> Date: Thu, 12 Sep 2019 09:29:27 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190912122514.22504-7-marcandre.lureau@redhat.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Miot0wW5oZjrWpdJOUFTWXTABowv3gUkS" X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.68]); Thu, 12 Sep 2019 14:29:42 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PATCH v3 6/6] Add dbus-vmstate object 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: mprivozn@redhat.com, pbonzini@redhat.com, berrange@redhat.com, dgilbert@redhat.com, quintela@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Miot0wW5oZjrWpdJOUFTWXTABowv3gUkS Content-Type: multipart/mixed; boundary="mPfcEMsLaVVcR4VomojOgNF7Tb5DWbKhN"; protected-headers="v1" From: Eric Blake To: =?UTF-8?Q?Marc-Andr=c3=a9_Lureau?= , qemu-devel@nongnu.org Cc: berrange@redhat.com, quintela@redhat.com, mprivozn@redhat.com, dgilbert@redhat.com, pbonzini@redhat.com Message-ID: <23b51e64-a68e-e285-2bcd-82e5c0a9817f@redhat.com> Subject: Re: [Qemu-devel] [PATCH v3 6/6] Add dbus-vmstate object References: <20190912122514.22504-1-marcandre.lureau@redhat.com> <20190912122514.22504-7-marcandre.lureau@redhat.com> In-Reply-To: <20190912122514.22504-7-marcandre.lureau@redhat.com> --mPfcEMsLaVVcR4VomojOgNF7Tb5DWbKhN Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 9/12/19 7:25 AM, Marc-Andr=C3=A9 Lureau wrote: > When instanciated, this object will connect to the given D-Bus instantiated > bus. During migration, it will take the data from org.qemu.VMState1 > instances. >=20 > See documentation for further details. >=20 > Signed-off-by: Marc-Andr=C3=A9 Lureau > --- > +++ b/docs/interop/dbus-vmstate.rst > @@ -0,0 +1,68 @@ > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > +D-Bus VMState > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > + > +Introduction > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > + > +The QEMU dbus-vmstate object aim is to migrate helpers data running on= > +a QEMU D-Bus bus. (refer to the :doc:`dbus` document for > +recommendation on D-Bus usage) object's aim is to migrate helpers' data > + > +Upon migration, QEMU will go through the queue of > +``org.qemu.VMState1`` D-Bus name owners and query their ``Id``. It > +must be unique among the helpers. > + > +It will then save arbitrary data of each Id to be transferred in the > +migration stream and restored/loaded at the corresponding destination > +helper. > + > +The data amount to be transferred is limited to 1Mb. The state must be= > +saved quickly (a few seconds maximum). (D-Bus imposes a time limit on > +reply anyway, and migration would fail if data isn't given quickly > +enough) s/enough)/enough.)/ > + > +dbus-vmstate object can be configured with the expected list of > +helpers by setting its ``id-list`` property, with a coma-separated comma --=20 Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org --mPfcEMsLaVVcR4VomojOgNF7Tb5DWbKhN-- --Miot0wW5oZjrWpdJOUFTWXTABowv3gUkS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEccLMIrHEYCkn0vOqp6FrSiUnQ2oFAl16VkcACgkQp6FrSiUn Q2pjagf/ZJwqc2dHZc9xBgZGXI/6iR3LQXFrPF8tm34JqDRKwYFWyNs+h21G34Ni y5ueLDWXhr5RFcz/pt/aUEgfn+AQ2N60ulwDbXz4Bb5LFiH5IFCGszqv5eHc8F0z S2+7YN1a44HYduJeXwwONs6b6Fu0J6aoEK8km+SOe0IDEEnkITwTNDkdsK3dNgVE o97w6tohWTQv4xk7U8zTq6eUsqxrryMjc5IW8lTuv2wD6bU30+wI10lPftB/bBhM UeQN28pBxJt7vCw7veNBx6/RIbcRmfKo0EtNENZ2IpdrpldfVagGzea7g9kMOqbU AkZA9ieN5qS6DjaAFBueqXTK8gfH+g== =C7cG -----END PGP SIGNATURE----- --Miot0wW5oZjrWpdJOUFTWXTABowv3gUkS--