Re: RAID-10 explicitly defined drive pairs?

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Neil,

>  echo frozen > /sys/block/mdN/md/sync_action
>  mdadm --add /dev/mdN /dev......
>  echo recover > /sys/block/mdN/md/sync_action
>
> it should do them all at once.
>
> I should teach mdadm about this..

What is required to do that from mdadm? I don't see any other place
where MD_RECOVERY_FROZEN is set, except via sysfs. So do you suggest
that mdadm use sysfs for that?
Also, what should be done if mdadm succeeds to "freeze" the array, but
fails to "unfreeze" it for some reason?

Thanks,
Alex.
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