URGENT: Need help rebuilding iir RAID5 array with failed drive

Garrett Cooper yanefbsd at gmail.com
Sat Jun 28 10:49:06 UTC 2008

On Sat, Jun 28, 2008 at 2:02 AM, Søren Schmidt <sos at freebsd.org> wrote:
> Erm, this makes no sense at all. You state you use the "iir" driver for the
> card, yet you expect to see the devices under ATA ?  Those are two very
> different animals, you can't use them together in away way or fashion on the
> same drives.
> That asks the question: which one is it ?
> If you use "iir" I have no idea how/if a rebuild is possible under FreeBSD,
> however it could be in the BIOS or with any other OS that supports it (here
> the HW should have kept your parity data intact).
> If you use ATA you shouldn't have used RAID5 as the docs tell you, as there
> will be no parity data to rebuild from no matter what BIOS/OS you use -> you
> will get garbage no matter what.

Uhm... ok, I'll bite. What documentation states how to use RAID's
under FreeBSD properly? The GEOM docs didn't seem to be what I was
looking for back then.

>> Thanks for the help and support. This definitely served as a lesson to
>> backup my data more often...
> That by itself may be worth all the trouble :)

No doubt.

Thanks :),

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