linux-kernel - Re: [RFC 0/4] Support kdump with LUKS encryption by reusing LUKS master key

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Message-ID: <1ccc06f4-3fff-8a6e-2a66-3f117ca6f282@igalia.com>
Date:   Mon, 21 Mar 2022 09:28:15 -0300
From:   "Guilherme G. Piccoli" <gpiccoli@...lia.com>
To:     Coiby Xu <coxu@...hat.com>
Cc:     kexec@...ts.infradead.org, Milan Broz <gmazyland@...il.com>,
        Thomas Staudt <tstaudt@...ibm.com>,
        Kairui Song <ryncsn@...il.com>, dm-devel@...hat.com,
        Mike Snitzer <snitzer@...hat.com>, Baoquan He <bhe@...hat.com>,
        Dave Young <dyoung@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [RFC 0/4] Support kdump with LUKS encryption by reusing LUKS
 master key

On 20/03/2022 22:41, Coiby Xu wrote:
> [...]
> 
> I believe some users have security concern for where to save vmcore.
> This use case exactly fits your description and your proposed solution
> shall be good for this type of users. But I think many more users may
> just choose to encrypt the hard drive when installing the system and
> they would naturally expect kdump to work for the case of full disk
> encryption. So your proposed solution may not address the latter case 
> where there is a much large user base.
> 

Thanks Coiby, makes sense, your idea is more generic and seems to
address all the use cases!
Cheers,


Guilherme