Questions about bootable raid 1 using atacontrol.

Joshua Oreman oremanj at
Wed Jun 25 20:47:50 PDT 2003

On Wed, Jun 25, 2003 at 08:04:38PM -0700 or thereabouts, George Hartzell wrote:
> Hi,
> I have a server running 4.8 on a single disk.  I'd like to set it up
> to mirror and be bootable.  Killer performance isn't critical, but
> maximal flexibility to frankenstein it together from spare parts is.
> So, I'm shying away from hardware raids, and even the pseudo-hardware
> raids.
> I'd like to just stuff two ata drives in there and use atacontrol to
> set them up.
> I gather that I can't just cram a second disk into the existing
> system, rather I'll have to do dumps to somewhere, set up a raid,
> disklabel/newfs, then restore the dumps onto the raid.  Is that an
> accurate summary.

AFAIK, that is correct.

> Once it's running, how do I recover if/when a disk pukes.  It sounds
> like atacontrol's "rebuild" command only works w/ real controllers.
> Do I need to boot from a cd and then dd onto the new disk, or???  Do I
> need to add the new disk into the raid somehow?

I think Vinum or RAIDframe would be better if you want software RAID.
Both support booting from the RAID.

-- Josh

> Thanks!
> g.
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