Subject: Re: kern/3460: block io unit for sd should be sector size
To: Koji Imada - je4wob/2 <>
From: Zdenek Salvet <>
List: netbsd-bugs
Date: 04/15/1997 20:01:00
> 1. "block io unit == disklabel sector size" case.

> 2. "block io unit == DEV_BSIZE" case.
> 	ffs/msdosfs needs modification to convert block io unit to
> 1 and 2 correspond to my "first" and "second" method.

Thanks for clarification.

> The advantages of "second method" is:
> 	It is not necessary to get disklabel sector size. 
> 	So It is possible to have file system which fs sector size is
> 	not physical sector size without disklabel.
> 	And to have different file system which has each fs sector
> 	size on same disk(ex. ffs with 512 fs sector size and
> 	cd9660).
> On the other hand, the advantage of "first method" is:
> 	Simple implementation.

I think 1)+ ffs modification to support fs sector != disklabel sector
would be best (I would like to create ffs for CD images in vnd) despite
the more difficult implementation.

Zdenek Salvet                                     
           If God had meant for us to be in the Army,
         we would have been born with green, baggy skin.