Vital Patches for ataraid with Intel Matrix RAID (ICH7)

Jeremy Chadwick koitsu at
Thu Mar 27 06:00:49 UTC 2008

On Sat, Mar 22, 2008 at 04:58:47AM +0000, Stef Walter wrote:
> Daniel O'Connor wrote:
> > I have seen this bug in other ATA RAID implementations (VIA & Promise) 
> > too. From what I can tell this part of your patch is general to all ATA 
> > RAID arrays, right?
> Yes, a small part. The part that will write out the RAID information
> (thus updating the generation) whenever the status changes, regardless
> of whether that change takes place when the machine is off or not.
> Without testing, I can't be sure whether this solves the problem on
> other ataraid devices.

I have access to many boxes that have two disks, support native Intel
MatrixRAID, and proper hot-swap backplanes.  I also have access to a
Promise TX4310 card, which I can hook up to said servers (vs. using the
onboard ICH7).

I should be able to reproduce failure scenarios (pulling disks while in
a RAID-1 configuration, etc.) on those systems and report back here.

Would that be ideal?

| Jeremy Chadwick                                    jdc at |
| Parodius Networking                  |
| UNIX Systems Administrator                      Mountain View, CA, USA |
| Making life hard for others since 1977.                  PGP: 4BD6C0CB |

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