[digikam] [Bug 374476] New: Exporting to Google Photos changes File modified timestamp

[Roger Foss]

https://bugs.kde.org/show_bug.cgi?id=374476

            Bug ID: 374476
           Summary: Exporting to Google Photos changes File modified
                    timestamp
           Product: digikam
           Version: 5.3.0
          Platform: Mint (Ubuntu based)
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Export
          Assignee: digikam-devel at kde.org
          Reporter: roger.foss at gmail.com
  Target Milestone: ---

BACKGROUND
Uploading lots of stuff to Google Photos. Because of how Google sorts photo
albums, if an album contains a photo with a recently modified file timestamp it
will show up first in the list of albums.

I therefore am careful about ensuring all photos in a digikam album have EXIF
original, create and file timestamps set to that of the original photo. This
ensures that the date ranges of albums are correct, which ensures that my
albums are sorted correctly.

PROBLEM
Once I have updated all the time stamps in a digikam album, I export it to
Google Photos.  Only, Digikam seems to update the file modified timestamp in
the export process.
This means all my photos end up with file modified timestamps set to the time
of the upload.  The export doesn't modify my photos (?), so why does it modify
the timestamps?

INFO
Currently on Linux Mint 18.1 with Digikam running on Cinnamon desktop. Not all
digikams GUI buttons display correctly but functionally seem to work.

My photos and digikam files are stored on a btrfs volume, mounted with relatime
option. Mentioning this but it should not be relevant, my bug report is really
that the Export process shouldn't update the file modified timestamp of photos.

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