Assuming you have a recent version of Spectrum Scale...
You can use ACTION(SetXattr(...)) in mmapplypolicy {MIGRATE,LIST} rules
and/or in {SET POOL} rules that are evaluated at file creation time.
Later...
You can use WHERE .... Xattr(...) in any policy rules to test/compare
an extended attribute. But watch out for NULL! See the "tips" section of
the ILM chapter of the admin guide for some ways to deal with NULL (hints:
COALESCE , expr IS NULL, expr IS NOT NULL, CASE ... )
See also mm{ch|ls}attr -d -X --hex-attr and so forth.
Also can be used compatibly with {set|get}fattr on Linux
--marc
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