I am considering adding a create time and a last modified time to
the _NCProperties provenance attribute in the netcdf-c library.
Any opinions on this? Would it be of any use?
=Dennis Heimbigner
Unidata
Details:
1. add two fields to the _NCProperties attribute of the form
|...,Created=<time>,Modified=<time>|
2. The time is number of microseconds since the start of the Unix epoch
time.
3. The modtime is an approximation in that it is changed whenever a
file is closed
(sync'd actually) and the file was opened for writing. This means
that if the file
was opened for writing, but not actually written, the modtime will
still be changed.
4. There is a cost to re-writing the _NCProperties attribute if the
modtime is changed.
