On Tue, Jun 23, 2026 at 08:00:11AM +0200, Michel Verdier wrote:
> On 2026-06-22, [email protected] wrote:
> 
> >> RAID is always before LUKS : partition > RAID array > LUKS > filesystem
> >
> > "Is always" means for you "should always be" or "has to be"?
> 
> "has to be". LUKS encrypt a partition in a unique way. So 2 encrypted
> partitions are always different and cannot be synced.

I think that is wrong. You don't sync the *encrypted* partitions (how would
you?) but the decrypted block layer, one level up. I don't see a reason it
wouldn't work.

> > As far as I understand OP, their case is the other way around (and I don't
> > see why it shouldn't be technically possible: a block device is a block
> > device is a block device, after all).
> 
> Perhaps the problem but I don't have enough informations on its
> installation.

OP's initial description was (to me) so clear that I think I understood
it.

Cheers
-- 
tomás

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