There isn't an option for that and it isn't actually required that the target directory be empty (just a good idea). Plus it has to do the stat calls on the other end anyway so I doubt there would be much performance benefit.
Maybe --ignore-times would cause it to not look but I kinda doubt it and
I am too tired to do an strace right now ;)
On 06/09/2016 05:32 AM, Arnaud Aujon Chevallier wrote:
> Hello,
>
> I'm currently using rsync to backup up to 1 TB of small files of
> relatively small files (hundreds of Ko mostly)
>
> My backup strategy is to use a full backup and then backup the diff
> every day using hardlink with the previous backup. This means that each
> time I use rsync, the destination directory is empty.
>
> Using strace, I can see that rsync call a 'lstat' command to try to see
> if the file already exists in my destination directory. Is there an
> option to tell rsync that the destination directory is empty ?
>
> Do you think that avoiding this call can improve rsync performances in
> this specific case ?
>
> I tried reading the source code, but I'm not exactly sure where this
> lstat call happens.
>
> Thanks a lot,
>
> Arnaud Aujon Chevallier
>
>
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