Rainer Traut wrote: > Am 08.08.2011 18:51, schrieb Momo: > > Hi > > > > No, he's talking filling with zeros unused blocks. That's a prerequisite > > to optimize for a sparse image _on the other side_ and/or compression > > during the transfer. > > > > I know of an ext2/3/4 utility that does precisely that. I have no idea > > if such an utility exists for NTFS. > > > > It exists for NTFS, have a look at "sdelete.exe" with -c option. > > > > Sorry for getting back so late. > > Yes, guys, exactly what I meant was filling unused space with zeros. > The linux tools to compress and transfer cannot read the ntfs data > structure and compress every garbage. But if unused blocks are filled > with zeros one can achieve much better compression. > > I looked into sdelete.exe, this really is helpful but obviously works in > running instance. > > My idea is to mount the raw image with ntfs3g and create a big file with > zeros. This should be sufficient, like Marco said. > > Regards, > Rainer Don't forget rsync's parms --bwlimit=0 --compress-level=1 -- Charles _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos-virt
