Follow-up Comment #6, sr #135998 (project xrootd):
As a response to Brian's comment below (sent via plain email); of course we
will be fully compatible. I don't yet know how but it will likely be
implemented as special file system extensions and you get to specify for your
particular file system. The current semantics will not change unless you
specifically ask for new ones in this area. It's just clear that
online/offline storage needs to be differentiated and the current way we do
this is like using a hammer to pound in a 1 penny nail.
Do we know how other OSS plugins handle blocks?
For example, take a look at xrootd-hdfs:
https://github.com/bbockelm/xrootd-hdfs/blob/master/src/XrdHdfs.cc#L644
I leave st_blocks untouched. We should make sure this semantic change is
well-advertised to plugin writers
Brian
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