Howto: implement AMD SB9xx RAID5 support in dmraid

[Bad Bod]

HI,

RAID 0 , VT8237 chip-set, 2* 250Gb HD works in windows, not in dmraid.

I would like some-one to say that this is no longer supported, or something.

I have moved on, so I guess - windows 1, dmraid 0?

I am about to change hardware, and still want to use chipset RAID.
Are there any chipset RAID that work so I can multi boot?

My VIA used to work, then a version or 2 later #!!#$ . I would still be
very happy for a resolution. Do you support AMD RAID chipset?


Regards
full stop



On Mon, Mar 26, 2012 at 7:34 PM, Mark-Willem Jansen
<markwillem at hotmail.com>wrote:

>  Hi Phillip,
>
> > I would advise using mdadm instead since it is much better supported and
> > more reliable and feature complete.
> >
>
> Won't mdadm overwrite the metadata written to the disk by the BIOS/UEFI.
> The RAID needs to be accessible from Windows and Linux. And I already use
> the RAID under windows for my USER(would be /home for linux) directory.
>
> > I believe it should just work unless they changed the format of the
> > dmsetup table.
> >
>
> Could be true. Maybe just loading the appropriate module will work.
>
> > dmraid -n doesn't already recognize it? You can find the existing known
> > offsets in pdc.h.
> >
>
> I will run the command tonight when I am home. But as far as I can tell I
> only get "found 0 sectors" for all the three disks. Maybe adding the offset
> patch from ubuntu will do the trick.
>
> > dmraid already understands pdc metadata.
> >
>
> Does this include all the info needed to setup a RAID-5. For instance there
> are four different algorithm, left-asymmetric, left-symmetric,
> right-asymmetric
> and right-symmetric that can be picked.
>
> > Ubtunu 12.04 has switched to letting kpartx activate the partitions
> > instead of dmraid, which supports GPT.
> >
>
> Another patch I can apply to the source tree. :-)
>
> Kind regards,
>
> Mark-Willem
>
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