Re: [PATCH 6/6] xfs: adjust datadev sector count to reflect internal rt volumes

On Tue, Aug 18, 2026 at 11:33:05PM -0700, Christoph Hellwig wrote:
> I still think messing with the kernel buftarg nr_sectors is wrong for
> this.  The kernel view of the buftarg should be correct and just include
> the part of the device that matters.  So I think the right fix in the
> kernel is changing xfs_verify_media to add the internal RT device offset
> before sending the bios.   We might need additional userland fixes,
> but from a quick look I think it should be fine (famous last words)

Btw: happy to look into this myself.  Just waiting if you have a
reproducer before I go off an create my own.