[PATCH] NVMe: Skip namespaces with interleaved meta-data

[paul.grabinar@ranbarg.com (Paul Grabinar)]

On 28/01/15 21:16, Keith Busch wrote:
> I was trying something similar to SCSI, and I think Christoph may
> approve. Instead of all the logic deciding which namespace to attach
> and which to bail, attach all namespaces from NSID 1 to the max, then:
>
>     set_capacity(ns->disk, 0);
>
> Wait to initialize the format in nvme_revalidate_disk. If it's a usable
> format, set capacity and sector accordingly, and leave capacity at 0 if
> not. For metadata formats, leave the capacity at 0 until block integrity
> extensions can be registered, then rescan.

What happens if you switch on and off meta-data dynamically with
/sys/block/<bdev>/integrity/write_generate and
/sys/block/<bdev>/integrity/read_verify?