Re: softraid and multiple distros

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> So in the very simple one-array situation, this is probably safe.
> But it doesn't generalise.  If you have two array of distinct devices,
> then something like
>
>  ARRAY /dev/md0 devices=/dev/sda1,/dev/sdb1,/dev/sdc1,/dev/sdd1
>  ARRAY /dev/md1 devices=/dev/sde1,/dev/sdf1,/dev/sdg1,/dev/sdh1
>
> is not safe.  If /dev/sda1 fails, you pull it out and reboot, then md1
> won't be assembled properly as everything will get renamed.
> In general it is safer to use UUIDs
>
>   DEVICE /dev/sd[a-z][0-9]
>   ARRAY /dev/md0 uuid=whatever
>   ARRAY /dev/md1 uuid=whatever:else
>
> Hope that makes it reasonably clear.

Absolutely, thanks.


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