Backup complete gmirror/gstripe/gjournal drives, how-to?

[Wojciech Puchar]

> periodic backups on this machine, but I suspect that the 
> gmirror/gstripe/gjournal information is not being backed up.
>
> If my assumption is correct, how can I perform a "one-time" backup such that 
> I could do a bare-metal restore?  The essence of the question being I want to

assuming you do gmirror first and then gstripe of gmirror then
use dd to read last sectors of each disk drive and each gmirror device.
and backup disklabels