[talk] graid(8)

John Baldwin jhb at freebsd.org
Thu Apr 3 12:34:53 EDT 2014

On Wednesday, April 02, 2014 7:25:06 pm George Rosamond wrote:
> Greetings
> So I'm building a Supermicro box that has mobo/fake raid on FreeBSD 10.
> Since gmirror has gotten a bit overcomplicated when paired with gpart, I
> figured I'd look at what has replaced atacontrol, since 9.x I believe.
> It ends up graid is the new geom-based utility.  My question is this:
> graid seems to move beyond pure fake raid.  Is it a more stable/more
> effective way to cope with fake raid?  From what I've seen/read, is it
> without the typical pitfalls of fake raid (eg, reliance on a particular
> mobo, etc)?  Is it going to provide the sanity of gmirror
> Or is it really dressing up a pig?

graid is still doing software raid based on what the mobo wants, but it
does mean your BIOS can boot your volume after a failure which is a bit
of a crapshoot with gmirror.  It also means you don't have the problem
of GPT fighting over the last sector as the logical BIOS device that
the BIOS bootstrap sees hides the RAID metadata correctly (which it
can't do in the gmirror case).

John Baldwin

More information about the talk mailing list