On-disk format of UFS/UFS2 (for firmware implementation)

[Matt Sealey]

I'd prefer of course some design documentation (I refuse to believe the UFS2 disk
format was designed entirely in source code form without paper/html reference
documentation)

What I have is

src/sys/ufs/*
src/lib/libstand/ufs.c

and now

src/sys/boot/common/ufsread.c

This is a very good start but is there really not any paper doc or design reference
or even an email thread on a mailing list when people were designing UFS2?

My second question (since now we can poke around perhaps) is if there is a defined
way to detect a "dangerously dedicated" disk in order to support these system
configurations..?

-- 
Matt Sealey <matt at genesi-usa.com>
Manager, Genesi, Developer Relations
 

> -----Original Message-----
> From: R. B. Riddick [mailto:arne_woerner at yahoo.com] 
> Sent: Tuesday, June 20, 2006 9:49 AM
> To: matt at genesi-usa.com; freebsd-fs at freebsd.org
> Subject: Re: On-disk format of UFS/UFS2 (for firmware implementation)
> 
> --- Matt Sealey <matt at genesi-usa.com> wrote:
> > Solaris which uses some variant). I have the source code from 
> > sys/fs/ufs already but it is not the preferred method of 
> implementing 
> > filesystem code. It only needs read support for now so it 
> shouldn't be 
> > that complicated, but...
> > 
> > Anyway. Any hints here?
> > 
> I say, does it sound like u r looking for 
> src/sys/boot/common/ufsread.c?
> 
> -Arne
> 
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