Dear marpet,
Thanks for the response. This is very useful I indeed missed to update the dir in the snap.properties file. Now it seems ok. As far as I can judge Ceph/CephFS is an up an coming storage management system. I am not sure how likely it is that they will update their .snap dir.
I heard that there was some beginning consensus that hidden software folders such as ESA’s .snap could perhaps be preferentially placed below a generic .config dir and that other software could do the same. Hence my comment, but I am not sure whether this will find any real traction (too early to tell). A .esa_snap would already be very useful as it less likely to cause a clash (I hope).