Re: [PATCHv12 00/12] block write streams with nvme fdp

Christoph Hellwig
2024-12-10T07:19:23Z

On Mon, Dec 09, 2024 at 09:07:35AM -0700, Keith Busch wrote:
> Yep, pretty much. I will revisit the partition mapping. I just haven't
> heard any use cases for divvying the streams up this way, so it's not
> clear to me what the interface needs to provide.

Yes, it would be good to understand use cases first. I just threw the
patch in as a POC to show we can do it.

> > One thing that came I was pondering for a new version is if statx
> > really is the right vehicle for this as it is a very common fast-path
> > information. If we had a separate streaminfo ioctl or fcntl it might
> > be easier to leave a bit spare space for extensibility. I can try to
> > prototype that or we can leave it as-is because everyone is tired of
> > the series.
>
> Oh sure. I can live without the statx parts from this series if you
> prefer we take additional time to consider other approaches. We have the
> sysfs block attributes reporting the same information, and that is okay
> for now.

I'll try to find some time this afternoon for an interface, but if it
doesn't arrive in time we can probably drop if for the next submission.