Re: Bug#659460: grub-pc: grub-install can't install on raid0 device (grub-probe can't find /boot)

["Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>]

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On 11.02.2012 12:36, John Hughes wrote:
> On 11/02/12 12:19, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>> On 11.02.2012 12:02, John Hughes wrote:
>>>
>>> The difference is rather blurred now that it's mdadm that's handling
>>> it rather than the old dm-raid.
>>>
>> This is exactly the problem. GRUB can't distinguish between the both. Do
>> you know an ioctl, or at very least a command to distinguish them?
>> Also honest raid doesn't try to scam you into believing that it's a
>> hardware raid.
>
> What scam?  As far as I can tell it's just a mdadm raid with an intel
> container format rather than a mdadm container format.
>
Adding BIOS driver for this screws things up.
And the scam is adding this to mobo features as a "RAID" and an attempt
to make this pass as if it was a hardware RAID.
GRUB currently considers mdX as a non-available through BIOS unless user
overrides it in device.map, we need to add a logic to handle the
fakeraid as a BIOS disk.
It's possible to add support for intel RAID but it will be useless since
the member disks aren't available through BIOS to begin with.
>
>


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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