Reminder: ASAP3 Fast Copy

since some time a fast copy process is active to copy data from the beamline
file system to the core file system immediately after data are written into
the beamline file system.  As there appeared some missunderstandings due to
poor communications from my side some clarifications are needed:

1) The new fast copy process is only active for BEAM TIMES,
   *NOT* for COMMISIONINGs.

2) The old periodic copy process is still active for everything,
   i.e. beam times and commisionings.
   For beam times it will pick up any files that were not copied by the
   fast copy process, and copy tham as it has always done.

3) The fast copy process mirrors renames and deletions in the beamline filesystem
   to the core file system, which is intended to keep properly handle cases where
   data are written to e.g. a file ending in *.tmp an when finished renamed to
   it's final name, or to cope with the way editors handle backup files.

4) In case of hickups on the proxy nodes, e.g. when a node dies or has some other
   problems the fast copy process running on that node will also fail, there is
   as of now no high availability mechanism in place to start the process automatically
   on the replacement node that takes over the NFS/SMB/Hidra funtionality.
   In that case the old copy process is the fallback!


It is not considered good practice to write data into files that always have the
same name and rename them after writing to some meaningful unique name, or to 
write always into a folder with the same name and then rename the folder to a
meaningful unique name.  While this may seem to be a good idea as one does not
have to change file names in the data taking software, it's really a recipe for
disaster.  If data taking software insists on fixed file names or is unable to
use unique ones like containing the time as part of the name then that software
is badly broken and needs to be fixed.

So it is STRONGLY DEPRECATED to rename files and folders in the beamline file system,
rather choose proper names when creating files or folders!