Missing thumbnails

[Gilles Caulier]

yes DebugView traces can help. Use Cloud storage to share the traces.

Gilles Caulier

Le lun. 16 oct. 2023 à 10:22, Milind Joshi <mmjoshi at iitbombay.org> a écrit :
>
> Hi Gilles
>
> Thanks. That worked.
>
> Now I am facing another problem. I have jpg files without any tags in
> two selection. Each of these selections have multiple directories under
> them. None of the jpg files here have any tags. That is confirmed when I
> go the individual directories and check the files. However, when I
> search these collections for jpg files with tags, all the files show up!
> Again individually or collectively no tags are displayed in Captions tab
> on the right sidebar.
>
> Do let me know if running the DebugView tool here will be helpful and I
> can do that. Also, where do I send the result of the DebugView tool?
>
> mj
>
> On 14.10.2023 12:21:34 pm, Gilles Caulier wrote:
> > yes, all thumbnails are stored in the database, a dedicated sqlite
> > file as explained here:
> >
> > https://docs.digikam.org/fr/setup_application/database_settings.html#the-sqlite-database
> >
> > Removing this file will be recreated from scratch at next startup, and
> > using the maintenance tool.
> >
> > Note that a console trace can be informative to catch error from
> > database while generating thumbs with current one. See details here :
> >
> > Gilles Caulier
> >
> >
> > Le sam. 14 oct. 2023 à 08:47, Milind Joshi <mmjoshi at iitbombay.org> a écrit :
> >> Still waiting for an update on this. Desperately need a solution ASAP.
> >>
> >> On 12.10.2023 04:44:26 pm, Milind Joshi wrote:
> >>> Hi Gilles
> >>>
> >>> I have about 4,000 images in my collections. They consist of dng, pef,
> >>> arw, tif and jpg formats. These files are in different collections,
> >>> one for each format. The collections are on an external drive. The
> >>> problem affects all these collections. However, some thumbnails (about
> >>> 10% ) in all these collections are displayed correctly. Rest are missing.
> >>>
> >>>   It's a one TB drive with more than 500 GB free. So disk space is not
> >>> a problem.
> >>>
> >>> Are the thumbnails stored in thumbnails-digikam.db? Will deleting this
> >>> and the thumbnails-digikam.db-journal file create the thumbnails all
> >>> over again. Interestingly, the time stamp  on both the files is
> >>> yesterday indicating that all the refresh operations I have done today
> >>> have had no effect.
> >>>
> >>> Do update on the next course of action.
> >>>
> >>> mj
> >>>
> >>> On 12.10.2023 02:53:01 pm, Gilles Caulier wrote:
> >>>> Hi,
> >>>>
> >>>> Which kind of image format is affected with the thumbnails lost ?
> >>>>
> >>>> Thumbnails are stored in a dedicated sqlite database and compressed in
> >>>> Wavelets format (PGF). Did you have enough space on the disk where the
> >>>> database is stored ?
> >>>>
> >>>> How many items do you have in your collections ?
> >>>>
> >>>> Best
> >>>>
> >>>> Gilles Caulier
> >>>>
> >>>> Le jeu. 12 oct. 2023 à 10:32, Milind Joshi <mmjoshi at iitbombay.org> a
> >>>> écrit :
> >>>>> I have been using digiKam for a number of years. Being an open source
> >>>>> fan digiKam along with RawTherapee and Gimp are my tools to manage my
> >>>>> photography workflow.
> >>>>>
> >>>>> Couple of days back, I noticed thumbnails missing from some of my
> >>>>> collections. Rather than figuring out why it happened, I tried to
> >>>>> refresh the collection thinking that the thumbnails will be generated
> >>>>> again. digiKam progress display in the bottom right does show that the
> >>>>> Thumbs are being generated. However, the progress indicator stays stuck
> >>>>> at 0% forever. Thinking that the database could have been corrupted, I
> >>>>> used the Maintenance tool to clean the thumbnail database. This was
> >>>>> done
> >>>>> successfully. However, when I tried to refresh my collection to
> >>>>> generate
> >>>>> the thumbnails the same problem of the progress bar for thumbs
> >>>>> generation staying at 0% is repeated.
> >>>>>
> >>>>> What could be the problem? More importantly how to I recover from it.
> >>>>> It's impossible to manage the workflow without seeing the thumbnails.
> >>>>>
> >>>>> I am on Windows 11 and have digiKam 8.1.0 on my laptop.
> >>>>>
> >>>>> Need solution for this urgently!
> >>>>>
> >>>>> mj
> >>>>>