Checking support levels

Jonathan jonathanjstevens at
Fri May 16 10:46:33 UTC 2008

Thanks for that...

To confirm the RAID1 matters because RAID 10 is RAID 0 (stripe) over
RAID 1 (mirrors)?

I don't mind having to revert to BIOS for rebuild in the event of a hd
fault, but I wouldn't mind understanding a little more about the lack
of error handling.

Do you mean if one disk in the underlying mirror set fails that dmraid will
1) ignore and not notify
2) fall over in a big heap
3) notify, keep running but not rebuild
4) not handle inconsistencies without reversion to BIOS?

2008/5/16 Daniel O'Connor <darius at>:
> On Fri, 16 May 2008, Jonathan wrote:
>> >From my understanding the RAID should be supported by dmraid ok
>> 1) Is this correct?
>> 2) Will it work "out of the box" or will I need to do complicated
>> things?  ;) 3) Anything I should know? (caveats/restrictions/don't do
>> that do this/etc) ? 4) With this chipset and drivers how does RAID 5
>> compare with RAID 10 (if anyone knows) ?
> dmraid doesn't have any error handling for RAID1 and I don't believe you
> can reconstruct your array if you do replace a disk (you need to use
> the BIOS).
> ie it isn't really functional :(
> --
> Daniel O'Connor software and network engineer
> for Genesis Software -
> "The nice thing about standards is that there
> are so many of them to choose from."
>  -- Andrew Tanenbaum
> GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C

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