Subject: Re: newfs: determining file system parameters
To: None <tech-kern@netbsd.org>
From: Wolfgang S. Rupprecht <wolfgang+gnus20031020T122350@wsrcc.com>
List: tech-kern
Date: 10/20/2003 12:44:11
> take the top 8 bits (which will be zero in all current labels, as
> the sector size currently is going to be no more than about 8K for
> sure, and probably 512 in every case that matters) and break that
> into 2 4 bit fields (m & n).

DVD+RW's already have a 32k byte sector size.

Unlike CD-RW's, DVD+RW's are true random access devices for both
reading and writing.  In theory one could put a UFS onto these DVD's
and treat is as a real disk.  (Q: can Netbsd handle 32k byte blocks
yet?)

My bet is that the upcoming blue-ray dvd standard, of 27Gigs instead
of the current 4.7Gigs, will increase the block size again.

-wolfgang
-- 
Wolfgang S. Rupprecht 		     http://www.wsrcc.com/wolfgang/
           The From: address is valid.  Don't mess with it.