Re: [rdiff-backup-users] what exactly does "--verify-at-time xyz" do...

[Andrew Ferguson]

On Mar 23, 2009, at 2:20 PM, address@hidden wrote:
> --verify-at-time xyz
>
> Wondering about --verify-at-time xyz
>
> What exactly does this switch do?
>
> From my understanding of the man-page, it appears to "recreate" the
> actual file based on the date used in xyz, and then compare a *new*
> computation of the SHA1 hash with the SHA1 hash calculated and
> stored when the file was placed in the repository on date xyz.
>
> i.e.
> new sha-1 calc
> -(from taking the current file, and applying all applicable
> -rdiffs, then recalculating the sha-1 hash)
> vs.
> the stored sha-1 calc when the xyz backup was done.
>
> ---
>
> Is that correct?


Yes, it looks like that is correct, based on my reading of the source,  
and some quick experimentation.

Does that match with your experiments?


Andrew