copying 'holey' files ...

[Marc G. Fournier]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


I have a disk img for qemu that is 4G, but disk usage is only 650M ... due to 
how the image is created, it will grow to 4G, but only uses as much as it needs 
... but, if I run a simple 'cp' on the file, it goes from:

image: debian.img
file format: raw
virtual size: 4.0G (4294967296 bytes)
disk size: 652M

to:

image: dtc.img
file format: raw
virtual size: 4.0G (4294967296 bytes)
disk size: 4.0G

Is there a way of moving things around such that it *maintains* the holes, 
instead of fills them in?

Thx


- -- 
Marc G. Fournier        Hub.Org Hosting Solutions S.A. (http://www.hub.org)
Email . scrappy at hub.org                              MSN . scrappy at hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.9 (FreeBSD)

iEYEARECAAYFAkkPKWEACgkQ4QvfyHIvDvNJIwCeOTgfxMEf/g/7bnFehXlDZAva
dCwAoJL8sNsCD+h3PnJAAzebAQFsHhfa
=fcAm
-----END PGP SIGNATURE-----