[Bug 276524] Setting LUN block size in ctl.conf to 512 will use volblocksize instead

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276524

--- Comment #18 from Alexander Motin <mav@FreeBSD.org> ---
Format Device mode page reports physical sector size, not physical block size. 
That concept is used for bad block marking/relocation and appeared very early
in SCSI specs, long before logical blocks being formalized in SBC-3.  Since
Format Device mode page is obsolete since SBC-2 specification, released almost
20 years ago, it is hard to guess what would be its meaning in today's terms,
but I suppose physical sector smaller than physical block would not make sense.
 So I'll update the code to report physical block size there instead of logical
block size.  But after that I have a strong itch to remove Format Device mode
page together with Rigid Disk Geometry mode page, obsoleted for the same 20
years.

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