IETF Logo Mail Archive

Re: [netmod] Datastore leaf for yang instance data

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Fri, 23 November 2018 15:49 UTC

Return-Path: <j.schoenwaelder@jacobs-university.de>
X-Original-To: netmod@ietfa.amsl.com
Delivered-To: netmod@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3D5C8130DFF for <netmod@ietfa.amsl.com>; Fri, 23 Nov 2018 07:49:58 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gzrCs52c15JH for <netmod@ietfa.amsl.com>; Fri, 23 Nov 2018 07:49:55 -0800 (PST)
Received: from atlas5.jacobs-university.de (atlas5.jacobs-university.de [212.201.44.20]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7262E130DCE for <netmod@ietf.org>; Fri, 23 Nov 2018 07:49:55 -0800 (PST)
Received: from localhost (demetrius5.irc-it.jacobs-university.de [10.70.0.222]) by atlas5.jacobs-university.de (Postfix) with ESMTP id 18189BBC; Fri, 23 Nov 2018 16:49:54 +0100 (CET)
X-Virus-Scanned: amavisd-new at jacobs-university.de
Received: from atlas5.jacobs-university.de ([10.70.0.217]) by localhost (demetrius5.jacobs-university.de [10.70.0.222]) (amavisd-new, port 10032) with ESMTP id ywatUrq-cQXk; Fri, 23 Nov 2018 16:49:54 +0100 (CET)
Received: from hermes.jacobs-university.de (hermes.jacobs-university.de [212.201.44.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hermes.jacobs-university.de", Issuer "Jacobs University CA - G01" (verified OK)) by atlas5.jacobs-university.de (Postfix) with ESMTPS; Fri, 23 Nov 2018 16:49:54 +0100 (CET)
Received: from localhost (demetrius2.jacobs-university.de [212.201.44.47]) by hermes.jacobs-university.de (Postfix) with ESMTP id 0280A2003C; Fri, 23 Nov 2018 16:49:54 +0100 (CET)
X-Virus-Scanned: amavisd-new at jacobs-university.de
Received: from hermes.jacobs-university.de ([212.201.44.23]) by localhost (demetrius2.jacobs-university.de [212.201.44.32]) (amavisd-new, port 10024) with ESMTP id IiLhzfHzigHk; Fri, 23 Nov 2018 16:49:53 +0100 (CET)
Received: from exchange.jacobs-university.de (sxchmb04.jacobs.jacobs-university.de [10.70.0.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "exchange.jacobs-university.de", Issuer "DFN-Verein Global Issuing CA" (verified OK)) by hermes.jacobs-university.de (Postfix) with ESMTPS id 639F720037; Fri, 23 Nov 2018 16:49:53 +0100 (CET)
Received: from anna.localdomain (10.50.218.117) by sxchmb03.jacobs.jacobs-university.de (10.70.0.155) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.1591.10; Fri, 23 Nov 2018 16:49:52 +0100
Received: by anna.localdomain (Postfix, from userid 501) id 8B65130044A951; Fri, 23 Nov 2018 16:49:51 +0100 (CET)
Date: Fri, 23 Nov 2018 16:49:51 +0100
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Balázs Lengyel <balazs.lengyel@ericsson.com>
CC: Ladislav Lhotka <lhotka@nic.cz>, Martin Bjorklund <mbj@tail-f.com>, "netmod@ietf.org" <netmod@ietf.org>
Message-ID: <20181123154951.anviss5nllq6gwrn@anna.jacobs.jacobs-university.de>
Reply-To: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
Mail-Followup-To: Balázs Lengyel <balazs.lengyel@ericsson.com>, Ladislav Lhotka <lhotka@nic.cz>, Martin Bjorklund <mbj@tail-f.com>, "netmod@ietf.org" <netmod@ietf.org>
References: <87y3a6izap.fsf@nic.cz> <20181106063648.jjf2scqzoack5l3z@anna.jacobs.jacobs-university.de> <58740c15bf3277e04329546476f60c1d12516594.camel@nic.cz> <20181106.104157.239419955739949818.mbj@tail-f.com> <866ff105cf8fda7eadbdce5b344f4cd734fd99b8.camel@nic.cz> <1f4103c1-4953-3df4-d50d-aed1961fbc50@ericsson.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Disposition: inline
X-Clacks-Overhead: GNU Terry Pratchett
Content-Transfer-Encoding: 8bit
In-Reply-To: <1f4103c1-4953-3df4-d50d-aed1961fbc50@ericsson.com>
User-Agent: NeoMutt/20180716
X-ClientProxiedBy: SXCHMB03.jacobs.jacobs-university.de (10.70.0.155) To sxchmb03.jacobs.jacobs-university.de (10.70.0.155)
Archived-At: <https://mailarchive.ietf.org/arch/msg/netmod/Il9VudLhRTTONK_0cedkOlW2J2U>
Subject: Re: [netmod] Datastore leaf for yang instance data
X-BeenThere: netmod@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: NETMOD WG list <netmod.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/netmod>, <mailto:netmod-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/netmod/>
List-Post: <mailto:netmod@ietf.org>
List-Help: <mailto:netmod-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/netmod>, <mailto:netmod-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 23 Nov 2018 15:49:58 -0000

On Fri, Nov 23, 2018 at 01:21:23PM +0000, Balázs Lengyel wrote:
>    BALAZS: "Instance data associated with a datastore" may mean many things,
>    that's why this relatively loose term is used. It may mean:
> 
>      * Data was read from that datastore
>      * Data is intended to be fed into that datastore
>      * Something else ???
> 
>    This can be useful if data is read from a datastore, but in a number of
>    cases it is not useful:
> 
>      * Preloading configuration data: datastore may be running or candidate.
>      * Preloading mixed config and state data: We do have state data that is
>        very stable and thus it is documented as instance data, and the
>        instance data file is actually used to feed the state data into the
>        SW. So datastore is: running, candidate + operational if NMDA is
>        supported or state datastore (whatever that is) if NMDA is not
>        supported
> 
>    regards Balazs
>

I do not buy this story. Your software needs to decide somehow what
instance data means. A config true leaf in candidate means something
different than the same config true leaf in running and this yet again
means something different than the same config true leaf in operational.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <https://www.jacobs-university.de/>

v2.23.0 | Report a Bug | By Email