[geeks] Disk images

[Mike Meredith]

On Tue, 15 Mar 2005 16:01:53 -0500, Atom wrote:
> Weird. Right now I am using an external firewire chassie that I
> created a 5gb diskimage with. dd if=/dev/sda of=~/mdtimage.img
> and restore it with dd if=mdtimage.img of=/dev/sda

Dumb question, but have you tried setting bs to something bigger
than 512 ? On a mirrored SCSI disk, the default block size generates a
50Mbyte file in about 2.5s; using 'bs=1024k' generates the 50Mbyte file
in less than a second.