Re: [netmod] 答复: FW: a question about ietf-hardware yang module
Martin Bjorklund <mbj@tail-f.com> Thu, 27 June 2019 20:04 UTC
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Date: Thu, 27 Jun 2019 22:04:50 +0200
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To: j.schoenwaelder@jacobs-university.de
Cc: frank.fengchong@huawei.com, andy@yumaworks.com, netmod@ietf.org
From: Martin Bjorklund <mbj@tail-f.com>
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Subject: Re: [netmod] 答复: FW: a question about ietf-hardware yang module
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Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote: > On Thu, Jun 27, 2019 at 09:52:56PM +0200, Martin Bjorklund wrote: > > > Yes, good point, I think the phrase "by a different hardware > > > component" should be removed. It seems last-change should change when > > > I unplug a component and I plug it back shortly after, i.e., a > > > component is replaced by itself. So we have: > > > > > > "The last time a new hardware component has been added to the > > > '/hardware/component' list, or a hardware component has been > > > removed from the '/hardware/component' list, or a hardware > > > component in the '/hardware/component' list has been > > > replaced." > > > > I think that this is still not clear what it means that a component > > has been replaced. Do you mean "replaced by a different hardware > > component"? > > > > Otherwise (unplug then plug in the same component), the system either > > detects the removal and thus updates last-change, or it doesn't detect > > the quick removal/insertion, and then it can't do anything. Thus, I > > don't think this case needs special treatment, and the text could be > > just: > > > > "The last time a new hardware component has been added to the > > '/hardware/component' list, or a hardware component has been > > removed from the '/hardware/component' list." > > > > The question is whether every implementor will figure out that if the > component found in some slot x-y-z is different from what is expected > to be in slot x-y-z, this must be seen as a remove + add combination. > If we include 'replace', then it may be clearer that even in the case > where what is in slot x-y-z has changed, the last-change must be > updated. (That is, the list element with the same name still exists > but it is different from what was there before with the same name.) But then we're back to where we started - what exactly does "different from what was there before" mean? Presumably that some leaf's value is different...? /martin
- [netmod] a question about ietf-hardware yang modu… Fengchong (frank)
- [netmod] FW: a question about ietf-hardware yang … Fengchong (frank)
- Re: [netmod] FW: a question about ietf-hardware y… Andy Bierman
- Re: [netmod] FW: a question about ietf-hardware y… Juergen Schoenwaelder
- Re: [netmod] FW: a question about ietf-hardware y… Martin Bjorklund
- Re: [netmod] FW: a question about ietf-hardware y… Juergen Schoenwaelder
- Re: [netmod] FW: a question about ietf-hardware y… Martin Bjorklund
- [netmod] 答复: FW: a question about ietf-hardware y… Fengchong (frank)
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Juergen Schoenwaelder
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Martin Bjorklund
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Juergen Schoenwaelder
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Martin Bjorklund
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Juergen Schoenwaelder
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Martin Bjorklund
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Juergen Schoenwaelder
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Martin Bjorklund
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Juergen Schoenwaelder
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Martin Bjorklund
- Re: [netmod] 答复: FW: a question about ietf-hardwa… Juergen Schoenwaelder