[PATCH v2 2/3] block: support PI at non-zero offset within metadata

[Keith Busch]

On Thu, Sep 26, 2024 at 10:08:09PM +0530, Kanchan Joshi wrote:
> But there are kernel knobs too. Hope you are able to get to the same 
> state (as nop profile) by clearing write_generate and read_verify:
> echo 0 > /sys/block/nvme0n1/integrity/read_verify

It's not the kernel's verify causing the failure; it's the end device.
For nvme, it'll return status 0x282, End-to-end Guard Check Error, so
the kernel doesn't have a chance to check the data. We'd need to turn
off the command's NVME_RW_PRINFO_PRCHK_GUARD flag, but there's currently
no knob to toggle that.