Sizes reported by Disk Usage Analyzer (baobab), du, df, and (c)fdisk, revisited

[Mario Vukelic]

On Mon, 2008-05-19 at 20:53 +0200, Mario Vukelic wrote:
> Follows Disk Usage Analyzer (baobab), which reports something
> _completely different. I start it up and let it run a full scan.[...]

> Results:
> 
> HD300:		Size 193.9 GB, Usage 76%   (-> 174.4 GB)
> HD320-backup: 	 Size 40.4 GB,  Usage 15.9% (-> 6.4 GB)
> 
> Now, obviously, these values make equally little sense interpreted as
> 10^9 bytes (GB) and as 2^30 bytes (GiB). What gives?

I might have another hint. 

When checking the properties of my rdiff-backup folder on HD320-backup
with Nautilus, I found that Nautilus reports it wrongly, too, close to
baobab, and with an interesting message: "20,894 items, totalling 36.8
GB (some contents unreadable)". So I guess, rdiff-backup's storage does
pose problems to Gnome GUI tools.

This does not explain, however, why baobab reports HD300 wrong, too.
Nautilus gets this right when checking individual folders.