[sclug] dd question

[Rick Payne]

--On Friday, February 21, 2003 1:26 pm +0000 Pieter Claassen 
<pieter at openauth.co.uk> wrote:

> If I pop the master and slave HD's into a new machine booted from another
> HD, then they copy in about 30 minutes.
>
> I noticed in both cases that kswapd was going for it, but other than that
> I don't understand the massive time difference.

Presumably you had no swap on the first 'dd', so had rather less memory 
available for caching the read/writes.

> Also, is there anyway that I can check that the disks really did copy
> properly other than a boot. They both pass fsck.ext3 but I fear that might
> not be enough.

md5sum perhaps?

Rick