https://forum.kde.org/viewtopic.php?f=255&t=153810 When restarting the SMB (samba) service on the (linux) server, the network share holding the pictures is unavailable for a few seconds. Digikam (on Windows) immediately removes the tree from collection. I have looked through the options/preferences and did not find an option to prevent this behaviour. The share is added as 'Network Share.' BUT, even more, several times lately the collection disappeared while SMB (samba) was still running. I don't know why, but this behaviour of collections fully disappearing again and again is highly undesirable. Note the rescan time on 1Gbit/s for 20000 items / 300 GB is 40-60 minutes. Requesting: Digikam not dropping the collection when unavailable. Instead display a status 'collection unavailable.' Especially when the root folder of a collection is unavailable Digikam should be smart enough to realize this is probably a reachability issue rather than the user moving or removing the full tree, otherwise the user would have also remove or readded the tree in Digikam settings.
You can test the digiKam-6.0.0-beta1: https://files.kde.org/digikam/ Create a backup of your database, digiKam-6.0.0 will slightly change the database if you want to go back to an older version. Maik *** This bug has been marked as a duplicate of bug 377849 ***
See bug #377849