Re: [Xen-users] Wrong size on a domU partition

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Fajar A. Nugraha wrote:

> ... or simply
>
> dd if=/dev/zero of=/xen/domains/SRV03/opt-disk.img bs=1024k seek=30720 count=0
>
> that way no actual write needs to occur, but you get the same result.
I'd never thought of trying a count of zero.

On the other hand, what does this do for I/O performance long term ? 
Does a sparse image that's grown piecemeal over time perform 
better/worse/no different to an image that was written in one go ?
--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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