== sanity test 413k: QoS mkdir exclude prefixes ========== 10:20:56 (1784125256)
lmv.lustre-clilmv-ffff9c3f83172000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9c3f83172000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9c3f83172000.qos_exclude_prefixes=_temporary