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Re: [Qemu-devel] [Nbd] [PATCH 2/2] NBD proto: add GET_LBA_STATUS extensi

From: Wouter Verhelst
Subject: Re: [Qemu-devel] [Nbd] [PATCH 2/2] NBD proto: add GET_LBA_STATUS extension
Date: Thu, 24 Mar 2016 13:32:29 +0100
User-agent: Mutt/1.5.24 (2015-08-30)

On Thu, Mar 24, 2016 at 02:36:52PM +0300, Pavel Borzenkov wrote:
> On Thu, Mar 24, 2016 at 09:41:29AM +0100, Wouter Verhelst wrote:
> > Okay, that alleviates my concerns.
> > 
> > In that case it might be useful if the server could say something along
> > the lines of "I know it's allocated, but I didn't check whether there's
> > anything non-zero in there"? The client can then decide to do nothing
> > with that information; but the more useful information is sent along,
> > the better...
> Doesn't allocated state mean exactly this? E.g. it is allocated and I
> have no idea what the content is.

I suppose you're right.

< ron> I mean, the main *practical* problem with C++, is there's like a dozen
       people in the world who think they really understand all of its rules,
       and pretty much all of them are just lying to themselves too.
 -- #debian-devel, OFTC, 2016-02-12

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