Re: How to salvage a degraded mdadm RAID1 with as little data loss as possible?

On 2026-06-21, Paul Leiber wrote:

> My knowledge in IT is limited. I just can describe what I can observe and make
> guesses. (The md RAID is part of a setup I do for fun at home.) I know that it
> sounds strange, but my best guess is that there are two differing databases
> stored on my hard drives. How else can the repeated switch between different
> data sets be explained?

I think you should investigate your database installation. The problem
you described cannot come from raid1. It could be database installed on
"partition" and not on "md array". Or a backup reverted. Or something
else.