Raid1+0: create stripe over two /dev/mdx on partition or not?

Posted by Chris on Server Fault See other posts from Server Fault or by Chris
Published on 2014-05-29T02:45:05Z Indexed on 2014/05/29 3:29 UTC
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Filed under:

linux

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raid

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software-raid

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mdadm

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md

Given that I haven't found a way to define how a Raid10 is created with mdadm, i went the Raid1+0 solution.

How to display/define Mirror/Stripping pairs with mdadm

mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda1 /dev/sdf1
mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sdg1 /dev/sdh1
mdadm --create /dev/md10 --level=0 --raid-devices=2 /dev/md0 /dev/md1

My question is about the stripe. For the mirror I create a primary partition over the full HD and set partition type to FD.

So, should I do the same for the Stripe? Create partition on /dev/md0 and /dev/md1 (primary over full 'HDD', set partition type correctly) and then do the stripe on the partition?

Is there a correct way here or are there any advantages/disadvantages to a solution?

Thank you

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