recognizing changes in files

[Martin (KDE)]

Am Donnerstag, 1. Januar 2009 schrieb Mark Kretschmann:
> On Thu, Jan 1, 2009 at 11:48 AM, Martin (KDE) <kde at fahrendorf.de> 
wrote:
> > due to the problem with changing tags in amarok (speed down) I
> > use kid3 for now. The Problem: the changes are not recognized by
> > amarok. The tags are written to the files (verified with
> > id3info). The timestamps of the files have changed. but amarok
> > shows, neither from the collection tab nor from the file tab the
> > correct tags. I have to run a collection rescan to get updated
> > most of the tags. And I have to restart amarok to show all tags
> > the way they are.
> >
> > I use Amarok 2.0 on KDE 4.1.3, fedora 10, collection is on a NFS
> > volume
>
> Amarok detects collection changes by detecting changed directory
> "mtime" values. To get a certain directory rescanned (if it doesn't
> happen automatically), just "touch" (Unix command) the parent
> directory, and then click "Update Collection".

AFAIK mtime (modify time) of a directory is only changed if a file is 
added or removed. If file content changed none of the parent 
directory's times are changed (At least on my system). Only file times 
are changed.

>
> PS: While most file systems support mtime, a minority of them
> doesn't. Among those is FAT32, and possibly also NFS, which would
> explain your problems.

NFS and ext3 handles this the same way (on my short tests) as 
described above.

Martin