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Date:      Wed, 13 Sep 2023 12:33:39 +0100
From:      Frank Leonhardt <freebsd-doc@fjl.co.uk>
To:        questions@freebsd.org
Subject:   Re: Is ZFS native encryption safe to use?
Message-ID:  <5d265cdf-00df-fc80-638b-84b13f1cbbbf@fjl.co.uk>
In-Reply-To: <6b741e03-732e-f1b8-6340-0a8897fb8235@gmx.at>
References:  <NcUuVT_--3-9@tutanota.com> <0e7d2657-f857-01a8-f764-33b9c62c11f1@netfence.it> <de460855-d2a8-3125-1b64-bf5052e1e6ea@gmx.at> <f286ee12-8688-9a16-2c5e-e11fda8334f7@heuristicsystems.com.au> <6b741e03-732e-f1b8-6340-0a8897fb8235@gmx.at>

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On 24/08/2023 13:08, infoomatic wrote:
> On 24.08.23 00:43, Dewayne wrote:
>> Thx for the performance hint.  Were you using the same cipher on each?
>
> Yes, I have tried various combinations, but the difference was so huge
> that I did not let the benchmarks finish cause I felt it was wasted time
> and resources!
>
>
>> On 23/08/2023 5:34 pm, infoomatic wrote:
>>> last time (when 13.0 was released) I compared them:
>>>
>>> *) GELI + normal zfs was significantly faster than encrypted-zfs
>>> *) encrypted zfs to share files between Linux and FreeBSD did not work
>>> properly, resulting in Files non-readable on FreeBSD
>>>
Might be obvious, but I should make the point that if you use GELI to 
encrypt anything on FreeBSD, Linux won't be able to read it so it's just 
as much of a cross-platform problem as ZFS encryption not being portable.

Another observation on the use cases - if you're backing up encrypted 
ZFS datasets the backups are encrypted; if you backup from GELI they 
will be clear unless you encrypt them again.





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