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

On 6/20/26 6:23 PM, Paul Leiber wrote:

> I just noticed that I didn't manage to make clear that (1) I don't 
> think that there is one specific failed partition, but that both 
> partitions containing databases seem to work, but not at the same 
> time, and that (2) I want to keep the data on the seemingly failed device.

In case this helps: I think what you are trying to describe is "split 
brain error" https://en.wikipedia.org/wiki/Split-brain_(computing)

In short you have two versions, each with separate up-to-date data, 
which you will want to merge. Maybe there is someone here who knows a 
good way to do this. I currently have no experience working with such an 
error, but have read about it some.

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