[digikam] [Bug 372427] Some pictures do not display

[Mick Sulley]

https://bugs.kde.org/show_bug.cgi?id=372427

--- Comment #6 from Mick Sulley <mick at sulley.info> ---
Unfortunately I have largely destroyed the evidence by creating new sub albums
and copying the pictures.  However I thought I would try to see if I could find
out anything using the new appImage.  It gets a bit complicated, sorry.  This
is what I did - 

Created a guest user on my desktop (runs Mint18)
Copied my whole album to the guest account
Downloaded appImage5.4.0
Within the Album I have digikam4.db, my current database and digikam4.db.backup
which was the one in use when I had the problem.  I renamed digikam4.db as .old
and renamed digikam4.db.backup as digikam4.db to make it current again.
I then started DK5.4.0
The sub-album that had pictures missing is displayed, even though it no longer
exists!  It has thumbnails in it, but if I double click any I get the message
'Failed to load image'  File properties shows the folder that was where the
picture was, but that folder no longer exists.
I ran Rebuild Thumbnails and also Scan for new items from  Tools > Maintenance,
the indicators on the bottom of the screen went up to 100% in a few seconds,
however it took more than 2 hours before it actually finished.  When it had
finished I see the original structure with boxes displayed for thumbnails and
all the property information but no metadata.  There is no thumbnail and double
click produces the message 'Failed to load image'.  Presumably this is because
the database holds all of this information.
I then ran Sync Metadata and Database, but that doesn't seem to have changed
anything.

My conclusion to al this is that my original problem was caused by a database
corruption, what caused that I don't know.  I don't really see any point in
pursuing this any further so I suggest that you close it.
Thanks
Mick

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