Re: [Netconf] I-D Action: draft-wu-netconf-restconf-factory-restore-00.txt

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Mon, 02 July 2018 14:02 UTC

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Date: Mon, 2 Jul 2018 16:01:56 +0200
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Qin Wu <bill.wu@huawei.com>
Cc: Kent Watsen <kwatsen@juniper.net>, Ladislav Lhotka <lhotka@nic.cz>, netconf <netconf@ietf.org>
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Subject: Re: [Netconf] I-D Action: draft-wu-netconf-restconf-factory-restore-00.txt
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I suggest to try to make the proposal simpler, not more complex.

/js

On Mon, Jul 02, 2018 at 01:56:54PM +0000, Qin Wu wrote:
> 
> 
> 
> 发件人: Juergen Schoenwaelder
> 收件人: Qin Wu<bill.wu@huawei.com<mailto:bill.wu@huawei.com>>
> 抄送: Kent Watsen<kwatsen@juniper.net<mailto:kwatsen@juniper.net>>;Ladislav Lhotka<lhotka@nic.cz<mailto:lhotka@nic.cz>>;netconf<netconf@ietf.org<mailto:netconf@ietf.org>>
> 主题: Re: [Netconf] I-D Action: draft-wu-netconf-restconf-factory-restore-00.txt
> 时间: 2018-07-02 20:23:06
> 
> On Mon, Jul 02, 2018 at 12:16:27PM +0000, Qin Wu wrote:
> > Good point and suggestion. Here is my thought:
> > In case :startup capability is supported, the factory datastore can be copied into <startup>, restart is not needed since we have loaded content of factory datastore into startup. Startup will be updated with running each time the running is altered. In case of system fatal error, we will consider copy factgory datatore into <startup> again for restore.
> 
> I doubt this will work. If you copy <factory> to startup> and
> subsequently <running> to <startup>, there is a copy of <running> left
> in <startup>, i.e., the copy of <factory> to startup> had no effect.
> [Qin] To address this issue, we can introduce multiple target data sores in the new operation factory restore operation, copy factory datastore to startup and running in one operation, the source will be set to the same factory datastore.
> 
> > In case the restart is needed or device power on is needed, the factory datastore as source may not be set, instead, URL is set as source, the content of source identified by URL can be loaded into target datastore during restart or device repower on. In this case, the proposed factory datastore
> > and new operation can work together with zero touch bootstrapping procedure proposed in draft-ietf-netconf-zerotouch.
> 
> URLs are an optional capability so far and I do not know what "URL is
> set as source" means to me. What is target datastore here? I am not
> sure how data flows.
> [Qin] see device power on procedure defined in zero touch netconf WG draft, factory restore scheme, in my opinion can be integrated into it. The target datastore(s) can be set to any datasore(s) you want to return factory default.
> 
> > In case :writable-running capability is supported, the factory datastore can be directly copied into <running>, in case of multiple conceptual flows, we can consider to copy one factory datastore into multiple <running> targets.
> > In case :candidate capability is supported, the factory datastore can be first copied into <candiate> and then the <candidate> is committed into <running>, in this case, startup is not touched.
> 
> What are multiple <running> targets? What are "multiple conceptual flows"?
> I am confused.
> [Qin] see above, in the above cases,multiple datasores can be set to <startup> and <running> And all other datastore that need to set to factory default. That means in the new operation, multiple target list can be included. If multiple factory defaults are allowed,multiple sources can be included as well.
> 
> Not sure multiple target running case exists,if we can copy one source to multiple instances distributed in multiple logical network elements, that will be great.
> /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/>

-- 
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/>