Hi.
OS: «Ubuntu» 12.10 with updates from "kubuntu-ppa/backports" installed.

I am using «davfs2» to mount «WebDAV» resources to local directory. There is problem with big video-files (> 100 MiB) — «Dolphin» freeze when trying open folder with this files.
My thoughts: «WebDAV» storage mounted to local directory and «Dolphin» «thinks» that it's just a local folder and try make thumbnails, which is require video files to be downloaded . This cause a freeze and unnecessary network usage.
Is there a way to «tell» «Dolphin» that this folder is remote and there is no need for thumbnails? Maybe some extra configuration in file ".directory"?

Thanks!

Unfortunately while mechanisms exist in certain parts of KDE to treat NFS, CIFS, NTFS and FAT32 filesystems differently, there is no such separation for other network based file systems such as davfs2. I am not sure if the thumbnailing system integrates with those mechanisms either.

As such as far as KDE is concerned, a mounted davfs2 file system will always be local. I would suggest disabling previewing for videos in this instance as a immediate workaround.

Should I create bug/wish-report for this issue?

Yes, that would probably be the best thing to do in this case - as KDE needs to classify "davfs2" as a "Slow file system" which should disable thumbnails among other parts of it's functionality.

Done: Bug #316396

I see that I'm joining the discussion a bit late, but please note that the slow/fast file system stuff happens in KFileItem from kdelibs. There is nothing we can do about it in Dolphin,so it makes no sense to file Dolphin bug reports about that.