How does one enable --write-mostly with Linux RAID?

Posted by user76871 on Super User See other posts from Super User or by user76871
Published on 2012-01-17T16:50:16Z Indexed on 2012/06/21 21:18 UTC
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Filed under:

linux

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configuration

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startup

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raid-1

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mdadm

Unfortunately the mdadm and mdadm.conf man pages are not quite up to par. I would like to enable the --write-mostly flag for my RAID, but neither the man pages nor the internet will tell me how. I am not aware of any place to put default arguments for mdadm, nor aware of when it would be launched and by what.

It seems the logical place to add this information is mdadm.conf, but the flag is unmentioned in man mdadm.conf. Where and how can I enable --write-mostly? Thank you.

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