Re: modifying degraded raid 1 then re-adding other members is bad

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Michael Tokarev <mjt@xxxxxxxxxx> writes:

> Why we're updating it BACKWARD in the first place?

Another scenario: 1 disk (of 2) is removed, another is added, RAID-1
is rebuilt, then the disk added last is removed and replaced by
the disk which was removed first. Would it trigger this problem?

> Also, why, when we adding something to the array, the event counter is
> checked -- should it resync regardless?

I think it's a full start, not a hot add. For hot add contents of
the new disk should be ignored.
-- 
Krzysztof Halasa
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