[Digikam-devel] [Bug 283013] New: Accelerating writing metadata back to image files

Gerhard Kulzer gerhardk at gmx.ch
Thu Sep 29 08:15:57 BST 2011


           Summary: Accelerating writing metadata back to image files
           Product: digikam
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: Metadata
        AssignedTo: digikam-devel at kde.org
        ReportedBy: gerhardk at gmx.ch

Version:           unspecified (using KDE 4.7.0) 
OS:                Linux

I'm not sure how the files are updated when writing metadata back to images
(probably kioslave task). My suspicoin is that the whole file is written back
and not just the metadata part.
When I backup my images with rsync (using Luckybackup GUI) after I've modified
metadata with digikam, the update seems much quicker than in digikam. And with
rsync it is clear that only a small part of every file is being rewritten
(example log:    32.77K   1%   71.75kB/s    0:01:31)

If my understanding is correct, it should be relatively easy to do the same
with digikam, just using rsync?

Reproducible: Always

Steps to Reproduce:
Update some metadata in digikam, then backup the same data using rsync.

Actual Results:  
rsync update is much faster.

Expected Results:  
accelerate writing metadata back to image files

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