Many, many thanks to all the following people:
K.Ravi <RAVKRISH.IN.ORACLE.COM.ofcmail@in.oracle.com>
White Gary SrA USAFE CSS/SCOE <Gary.White@ramstein.af.mil>
rene@iusti.univ-mrs.fr (Mr Rene Occelli)
peter.allan@aeat.co.uk (Peter M Allan)
David Lee <T.D.Lee@durham.ac.uk>
Rich Kulawiec <rsk@itw.com>
Bryan Parsons <parsonsb@gw.landgtel.co.uk>
root@wisdom.maf.nasa.gov (Mark Hargrave)
David Steiner <dsteiner@brynmawr.edu>
Alfredo Sola <adminsis@intelideas.com>
patesa@aur.alcatel.com (Sanjay Patel)
john <john@tdi.com>
Here's what I learned:
The messages are saying that some process is using the partition I'm
trying to unmount therefore it will not unmount it. The same is true at
the end: it is telling me something is already mounted to the mount
point I specified this is because the disk was not unmounted.
Apparently, I need not worry about these messages.
If I wish to unmount the drive before doing the backup I need to find
what process is using it and stop that process.
I can run fuser and lsof to find processes that are running and stop
them, but that sounds tedious. Plus it means that I have to backups
interactively.
Lastly, several people have always done backups with the disk mounted
and have not had any problems with the backups being corrupted.
grant
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