On Monday 03 March 2008 12:28, Eben King wrote:
> On Mon, 3 Mar 2008, Donald E Haselwood wrote:
> > What is a good way to backup the entire linux system?
>
> What I do is (in effect)
>
> cat /dev/hda > /dev/hdb
>
> (but I use dd and vary the block size to see what's fastest). My drives
> run at about 30 MB/s (so the process takes apout an hour), though of course
> that'll vary with your drives. You can do
>
> cat /dev/hda > /mnt/temp/backup-file
>
> or even
>
> gzip -9 < /dev/hda > /mnt/temp/backup-file.gz
>
> but then you're reducing ease of access in favor of being able to use the
> drive for other things too. If you've got a lot of incompressible data
> (mp3, wmv/mpg/divx) it'll use lots of CPU cycles for little gain too.
Thanks! Enough new ideas to keep me busy "for a while" ;)
BTW, thinking of restoring--
Can raid be mounted from a "live" CD? I haven't been able to mount a raid1
(i.e. /md0 on my setup) from a "live" CD (Knoppix, or Suse10.3 live). mount
asks for file type and I haven't found anything that gets it mounted.
Don
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