Re: Can NetBSD cgd be used for encrypted backup?

[Brad Spencer <brad%anduin.eldar.org@localhost>]

Mayuresh <mayuresh%acm.org@localhost> writes:

> On Tue, Jun 27, 2017 at 07:53:35PM -0400, Greg Troxel wrote:
>> Comparing encfs to cgd, the big issues are
>> 
>>  - stability of codebase to be able to get your bits back much later (?,
>>    but cgd seems like it has been quite stable.  But it's NetBSD only
>>    AFAIK.)
>> 
>>  - exposing the structure of your filesystem such as the histogram of
>>    file sizes, directory organization, and when various parts were
>>    updated (cgd wins)
>> 
>>   - having ciphertext size scale with size of plaintext easily (encfs
>>     wins)
>
> One more point: I have to identify a virtual disk or partition to use cgd.
> When doing so I have to decide its size up front and reserve that much
> space, even if I may not need that today. And when that space fills, I am
> not sure whether there ways to expand the FS easily. Even if there are,
> encfs/cryfs are lot more convenient here as they piggyback on native FS in
> user space and do not really require setting aside space for them.
>
> Mayuresh.

I put a cgd on top of a lvm and had no particular trouble resizing the
cgd.  I just used resize_ffs like I might have done on a Not-cgd fs and
it worked just fine.


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Brad Spencer - brad%anduin.eldar.org@localhost - KC8VKS
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