Re: Good hardware for mdadm

[Adam Talbot <ajtalbot1@gmail.com>]

I have found placing /boot + MBR on a DOM (Disk on module) to be very
effective.

Perhaps we should be asking how the MBR got broken in the first place?

On Fri, Aug 29, 2014 at 2:47 PM, Paul van der Vlis <paul@vandervlis.nl> wrote:
> Hi Roberto,
>
> op 29-08-14 22:44, Roberto Spadim schreef:
>> i use two or more boot disks, if the first raid1 disk don't boot bios
>> go to second boot disk, third, etc etc,
>
> In my opinion this only works when the boot-disk is completely defect or
> removed. Not when the data in the MBR on that boot-disk is corrupt.
>
> Or did you test this, or do you have other reasons to believe that your
> bios will handle this correct?
>
> With the boot-disk I mean the disk what's in the bios the first disk. So
> this could also be the second raid1 disk. Or an USB stick.
>
>> you must write grub to mbr of each disk
>
> Of course.
>
> With regards,
> Paul van der Vlis.
>
>> i'm using dell server r410 if i'm not wrong
>>
>> 2014-08-29 17:31 GMT-03:00 Paul van der Vlis <paul@vandervlis.nl>:
>>> Hello,
>>>
>>> I like mdadm and I am using it many years. But in my opinion it has one
>>> disadvantage: when the MBR of the boot-disk is corrupt, the machine will
>>> not boot.
>>>
>>> A bios could check this. Wait for some kind of signal from Grub or
>>> Linux, and after a timeout boot from another disk. But I don't know
>>> about a bios with that feature.
>>>
>>> A PCIe card could do something like that, but I don't know about such a
>>> PCIe card.
>>>
>>> Is there such hardware?
>>> What do you do to avoid this problem?
>>>
>>> With regards,
>>> Paul van der Vlis.
>>>
>>>
>>>
>>>
>>> --
>>> Paul van der Vlis Linux systeembeheer, Groningen
>>> http://www.vandervlis.nl/
>>>
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>>
>>
>
>
>
>
>
> --
> Paul van der Vlis Linux systeembeheer, Groningen
> http://www.vandervlis.nl/
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html