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> Author: sobomax
> Date: Wed Nov  7 16:28:09 2018
> New Revision: 340220
> URL: https://svnweb.freebsd.org/changeset/base/340220
> 
> Log:
>   Revert r340187, it breaks EOD (end-of-device) detection logic. Turns out,
>   i/o into last_sector+N is handled differently for N==1 and N>1 cases to
>   accomodate that, so some other approach would be needed to fix DIOCGDELETE
>   ioctl(2).
> 
> Modified:
>   head/sys/geom/geom_io.c
> 
> Modified: head/sys/geom/geom_io.c
> ==============================================================================
> --- head/sys/geom/geom_io.c   Wed Nov  7 16:22:18 2018        (r340219)
> +++ head/sys/geom/geom_io.c   Wed Nov  7 16:28:09 2018        (r340220)
> @@ -420,8 +420,6 @@ g_io_check(struct bio *bp)
>                       return (EIO);
>               if (bp->bio_offset > pp->mediasize)
>                       return (EIO);
> -             if (bp->bio_offset == pp->mediasize && bp->bio_length > 0)
> -                     return (EIO);
>  
>               /* Truncate requests to the end of providers media. */
>               excess = bp->bio_offset + bp->bio_length;

Thanks, I think this is the best thing to do while investigation goes on.
-- 
Rod Grimes                                                 rgri...@freebsd.org
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