Can somebody explain this? du & ls showing different sizes

[Bill Crawford]

On Monday 16 February 2009 07:13:23 Vijay Gill wrote:
...
> In my case I have provided 1M which is far much less than 512M which
> XFS is pre-allocating. This is what caught my eye.

That might be 1M * 512 byte traditional disk sector size?

> Cheers
> Vijay