[digikam] [Bug 366247] New: Digikam writes metadata to some files only not every one

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https://bugs.kde.org/show_bug.cgi?id=366247

            Bug ID: 366247
           Summary: Digikam writes metadata to some files only not every
                    one
           Product: digikam
           Version: 5.0.0
          Platform: MS Windows
                OS: MS Windows
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: Database-Maintenance
          Assignee: [hidden email]
          Reporter: [hidden email]

I have a folder with 60 JPGs,
none of them are read only;
all of them are full access for all users in NTFS properties;
every single picture has a tag.

However,
if I sync the metadata to images, I can see that only 23 pictures have tags
written to the metadata, the rest have a sidecar file (xmp)

Reproducible: Sometimes

Steps to Reproduce:
1. Add tags to multiple images in digikam
2. Write metadata to images
3. Open windows file explorer, go to file properties - details - tags


Actual Results:  
Some images have tags, some don't

Expected Results:  
Every image you add a tag in digikam to should have a tag in file properties

I think the malfunction happens not every time. I did not check every single
file in other folders but I took a quick look at they seem to be fine.
Star ratings have been written to metadata without errors.
All starred images have tags written to metadata.
All pictures with faces detected have tags written to metadata.
The bug might be related to Bug 361378 - Tags are not being removed from files
metadata
I tried to switch the lazy synchronization on and off but the result is the
same.
I tried to remove one tag and add it again but the result is the same.

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--- Comment #1 from [hidden email] ---
Using single core to process image give better results ?

>Open windows file explorer, go to file properties - details - tags

And you expect to see Windows explorer to give right metadata ?
You must check on image metadata as well. Look in XMP metadata tags viever in
digiKam or Showfoto for details (do not use tags filter here).

Gilles Caulier

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--- Comment #2 from wildcowboy <[hidden email]> ---
Here is a screenshot of the folder in windows file explorer.
https://goo.gl/photos/Qpzono8Jh5FxVC4d8
Every single file is supposed to have a tag "zoo".

I wish I could show tags as a column in digikam table view. You would see the
difference between file explorer and digikam side by side then.

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--- Comment #3 from wildcowboy <[hidden email]> ---
(In reply to caulier.gilles from comment #1)
> Using single core to process image give better results ?
>

I am not sure I understood you fully.
Digikam is not asking you whether to use all processor cores or work on a
single core when you click on "sync" icon in thumbbar or select all files, go
to "item" menu then "write metadata to selected images" .
There is a checkbox for it in the menu "tools" - "maintenance" but digikam
usually crashes on my computer if I check the box so I stopped using it and
normally leave it unchecked.

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--- Comment #4 from wildcowboy <[hidden email]> ---
(In reply to caulier.gilles from comment #1)

> >Open windows file explorer, go to file properties - details - tags
>
> And you expect to see Windows explorer to give right metadata ?

Since windows explorer reads metadata I am expecting to see there the tags I
added in digikam

> You must check on image metadata as well. Look in XMP metadata tags viever
> in digiKam or Showfoto for details (do not use tags filter here).
>
> Gilles Caulier

Could you walk me through on what should I do here please. I have never heard
of "XMP metadata tags viewer" and never used "showfoto" either. I did open the
last one though but I could not figure out how to make it showing tags

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--- Comment #5 from wildcowboy <[hidden email]> ---
I just looked at other folders in my collection and the result is the same -
only some files have tags actually saved in metadata. Major feature is broken
now for me.

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--- Comment #6 from wildcowboy <[hidden email]> ---
I have played with the files for a while and here is what I have noticed.
- digikam is unable to save any metadata to some certain images. I have tried
both digikam 4.14 in linux and 5.0.0 in windows. I have tried to play with NTFS
security settings for the files. I have tried adding / removing tags, ratings,
captions, titles, etc.
nothing worked...

but

as soon as I opened the same folder/file in picasa and added a tag, e.g. "test"
digikam got back the ability to save changes into the file. So when I clicked
on "write metadata to file" it deleted the "test" tag added in picasa and wrote
tags, ratings, captions, etc. that are in digikam database.

another thing

when I do all the same but not in picasa but in file properties in windows file
explorer the result is very similar but digikam can't delete the tag "test"
assigned in the file explorer. Digikam will add other tags, ratings, captions,
etc. and it will react on changes but it won't touch the tag "test". The only
way to delete it is to do so in file explorer.

Getting frustrated now. I guess I should try storing my pictures in a different
file system but I am afraid to lose the data. Or maybe I should try doing DAM
on a proper linux machine but again I am afraid to lose the data plus not
everything I normally do with my files can be done in linux

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Maik Qualmann <[hidden email]> changed:

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--- Comment #7 from Maik Qualmann <[hidden email]> ---
Here not to reproduce with a Windows VM and a real Windows machine. If you are
using an antivirus program, you can disable it for testing?

Maik

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--- Comment #8 from [hidden email] ---
Widcowboy,

any feedback on this entry ?

Gilles Caulier

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--- Comment #9 from [hidden email] ---
Can you reproduce the problem with 5.4.0-pre release installer for Windows,
available here :

https://drive.google.com/drive/folders/0BzeiVr-byqt5Y0tIRWVWelRJenM

Gilles Caulier

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--- Comment #10 from wildcowboy <[hidden email]> ---
(In reply to caulier.gilles from comment #9)
> Can you reproduce the problem with 5.4.0-pre release installer for Windows,
> available here :
>
> https://drive.google.com/drive/folders/0BzeiVr-byqt5Y0tIRWVWelRJenM
>
> Gilles Caulier

Gilles,
I just checked the last version on 3 different folders and the issue did not
appear. By the way, I am pretty sure I used to get keywords like
"Events|holiday" written in metadata but now I am seeing only "holiday". Is
there a setting in digikam for that? Could it make a difference?

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--- Comment #11 from [hidden email] ---
There is no settings for that, but with current 5.4.0 pre release, we use last
Exiv2 0.26-svn shared library which is not released and introduce more than 200
bugfixes. This can explain the difference. Exiv2 is the low level library used
to play with metadata (xmp sidecar files included).

Gilles Caulier

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--- Comment #12 from [hidden email] ---
So can we considerate as fixed using Exiv2 0.26-svn ?

Gilles Caulier

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--- Comment #13 from wildcowboy <[hidden email]> ---
(In reply to caulier.gilles from comment #12)
> So can we considerate as fixed using Exiv2 0.26-svn ?
>
> Gilles Caulier

I think so. If the issue occurs again I will let you know.

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           What    |Removed                     |Added
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         Resolution|---                         |FIXED
             Status|UNCONFIRMED                 |RESOLVED
   Version Fixed In|                            |5.4.0

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--- Comment #14 from wildcowboy <[hidden email]> ---
I just found out that this bug still exists.
I have been sorting pictures using Geeqie and noticed that some pictures I
facetagged in digiKam do not have keywords. Sure enough when I opened same
images in digiKam the People tag showed up in the Tags tree but not in Edit
Metadata menu (Ctrl-Shift-M)
Latest 5.5 appimage on Linux Mint 18.1

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