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Re: Can NetBSD cgd be used for encrypted backup?



On 11.06.2017 17:57, Mayuresh wrote:
> On Sun, Jun 11, 2017 at 04:32:02PM +0200, Kamil Rytarowski wrote:
>>> - Can the native cgd of NetBSD be used for the purpose of encrypted
>>>   backup? Basically can I mount such filesystem in a way that it shows
>>>   encrypted files?
>>>
>>
>> I use cgd(4) devices for encrypted backup.
> 
> Ok, you mean, I can mount it such that it shows encrypted files?
> 

Yes, use cgdconfig(8).

> And are the changes to files incremental (not necessarily one one one for
> encryption reasons), so that rsync can be effectively used for backup over
> cloud? (i.e. the amount of data movement when using rsync is somewhat - if
> not exactly - proportional to amount of change since last backup.)
> 
> Alternatively one could backup the virtual file, but that's not so useful
> for cloud backup.
> 

I don't use incremental or cloud backup, I just use a regular block
device on a portable storage (USB disk).

Putting image of encrypted partition to cloud sounds less trivial. You
might need a lot of bandwidth to use it.

> Mayuresh.
> 


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