Re: [Tracker] Prevent removed files from being removed from the db

[Philip Van Hoof <spam pvanhoof be>]

On Mon, 2010-05-17 at 15:12 -0400, Nikolaus Rath wrote:
> Philip Van Hoof <spam-+mS4aLmNmLKG5XvV6lv2jw public gmane org> writes:
> > > How can Tracker (reliably) detect if a resource is on an external drive?
> > > I can't believe that this works for anything but the trivial case where
> > > /dev/sdX is directly mounted. But if the disk is e.g. LUKS encrypted,
> > > then there's already a device mapper in between. It get's even worse
> > > with all the possibilities that FUSE and bind mounts offer.
> >
> > HAL (or devicekit) has a unique ID for each removable device. We detect
> > and use this unique ID for this purpose.
> >
> > If you can't believe this, why don't you try it?
>
> Because don't feel familiar enough with tracker to confirm that the data
> has really vanished (in contrast to me not being able to find it, see my
> other mail about problems with searching for a simple test file). 
>
> But I don't think there is any need for a demonstration. How can HAL (or

If you don't want to demonstrate the problem, then I'm afraid that we
don't want to help you.

> devicekit, or any other program) possibly know if an arbitrary FUSE file
> system stores its data on a removable device, the network, or just
> copies it from /dev/urandom?

> To put it differently, if I ask tracker to index /home/bla, and
> /home/bla/mnt is a mount point with file system type 'fuse.fusexmp', how
> are you going to determine if this is removable or not? I don't think
> there is an API for that.

We don't consider FUSE mountpoints to be removable devices. I already
explained what we consider to be a removable device. Martyn also replied
to you that info.


Cheers,

Philip

-- 


Philip Van Hoof
freelance software developer
Codeminded BVBA - http://codeminded.be