linux-kernel - Re: Need help increasing raid scan efficiency.

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Message-ID: <f63f0451-db17-40a0-861a-88e4ae54f82b@sotapeli.fi>
Date: Wed, 4 Jun 2025 07:22:15 +0300
From: Jani Partanen <jiipee@...apeli.fi>
To: David Niklas <simd@...mail.net>, Wol <antlists@...ngman.org.uk>
Cc: Linux RAID <linux-raid@...r.kernel.org>, linux-kernel@...r.kernel.org
Subject: Re: Need help increasing raid scan efficiency.

On 03/06/2025 23.04, David Niklas wrote:
> I think you misunderstood my original question, how do I assemble the
> RAID6 pairs (RO mode) into two different arrays such that I can read from
> them simultaneously?

I dont think there is any other way to do what you want to do than use 
overlayfs. You may find some ideas from here:

https://archive.kernel.org/oldwiki/raid.wiki.kernel.org/index.php/Irreversible_mdadm_failure_recovery.html