On Tue, Jan 18, 2005 at 01:55:38PM +0100, Geert Hendrickx wrote:
> On Mon, Jan 17, 2005 at 10:08:21PM -0500, Perry E. Metzger wrote:
> > 
> > "Geert Hendrickx" <geert.hendrickx@ua.ac.be> writes:
> > > I also find there is very limited documentation on the filesystems
> > > included in NetBSD.  About UFSv2 the docs only mention that "among other
> > > enhancements, it is better suited for filesystems larger than 1 TB".
> > > What does that mean, better suited?
> > 
> > It uses 64 bit block numbers instead of 32 bit ones. Since blocks are
> > 512 bits, well, you can see why 2TB becomes a hard limit.
> > 
> > > And what is the difference then
> > > between UFS v1 and v2 on my 10 Gb disk?  
> > 
> > You have no reason to bother with v2 if you aren't dealing with things
> > in the TB range.
> 
> What I've understood from various FreeBSD docs and mailing lists, is
> that UFS v2 also supports snapshots (useful for creating backups of a
> mounted disk), background fsck, ...  

Snapshots are supported by both UFSv1 and UFSv2.

> So there ARE improvements in functionality (which also hold for <2TB
> filesystems), so I'd think it IS worth documenting them.  
> 
> Just my 0.02 ...  

-- 
Juergen Hannken-Illjes - hannken@eis.cs.tu-bs.de - TU Braunschweig (Germany)