Re: [PATCH 5/5] nvme: support for zoned namespaces

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> Because Append is the way to go and we've moved the Linux zoned block
> I/O stack to required it,

Just to add some historical context: The first discussions about how to
support block devices with a non-random write model in Linux happened
maybe a decade ago.

Drive vendors came to LSF/MM to solicit feedback on how Linux could
support impending SMR devices. We spent a long time going over various
approaches, including some that are similar to what is now being
entertained as alternative to Append. The conclusion back then was that
an Append-like model (tell-us-where-you-put-it) was the only reasonable
way to accommodate these devices in Linux given how our filesystems and
I/O stack worked.

Consequently, I don't think it is at all unreasonable for us to focus on
devices that implement that mode of operation in the kernel. This is
exactly the that we as a community asked the storage industry to
provide!

-- 
Martin K. Petersen	Oracle Linux Engineering



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