== sanity test 413k: QoS mkdir exclude prefixes ========== 17:50:10 (1786312210)
lmv.lustre-clilmv-ffff9533202fe000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9533202fe000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9533202fe000.qos_exclude_prefixes=_temporary