RAID 0+1 (Problem)

ECJ jakosalem at telpacific.com.au
Wed Mar 22 03:25:59 UTC 2006


> On Wed, Mar 22, 2006 at 13:54:07 +1100,
>   ECJ <jakosalem at telpacific.com.au> wrote:
>> Hello All,
>>
>> I followed the steps in the link below but my RAID 10 array had a
>> problem
>> after a reboot.
>> What I did was:
>> - constructed 2 RAID0s (3x73GB each)
>> - combined these 2 into a RAID1
>> - mkfs.ext3 /dev/md45 (the name of my RAID10 array)
>> - mounted it on /data
>
> I am not sure about your question, but I did notice that you built your
> array in an unusual manner. Usually you want to do raid 1 first and then
> stripe accross the raid 1 mirrors. The problem with this is that are
> multiple
> drive failure sittions where a striped mirror would still be running where
> as a mirrored stripe would be dead in the water. (Though in the latter
> case
> you could still recover stuff after replacing the bad drives.)
>

It's actually what my boss wants: Create 2 RAID0s and combine them into
RAID1 (mirrored stripe). Any ideas what went wrong?

Cheers,

Edward




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