Re: [PATCH 0/6] power_of_2 emulation support for NVMe ZNS devices

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On Fri, Mar 11, 2022 at 10:23:33PM +0000, Adam Manzanares wrote:
> On Fri, Mar 11, 2022 at 12:51:35PM -0800, Keith Busch wrote:
> > And po2 does not even seem to be the real problem here. The holes seem
> > to be what's causing a concern, which you have even without po2 zones.
> > I'm starting to like the previous idea of creating an unholey
> > device-mapper for such users...
> 
> I see holes as being caused by having to make zone size po2 when capacity is 
> not po2. po2 should be tied to the holes, unless I am missing something. 

Practically speaking, you're probably not missing anything. The spec,
however, doesn't constrain the existence of holes to any particular zone
size.

> BTW if we go down the dm route can we start calling it dm-unholy.

I was thinking "dm-evil" but unholy works too. :)



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