== sanity test 413k: QoS mkdir exclude prefixes ========== 22:01:07 (1787104867)
lmv.lustre-clilmv-ffff90aed19cf000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90aed19cf000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90aed19cf000.qos_exclude_prefixes=_temporary