== sanity test 413k: QoS mkdir exclude prefixes ========== 09:33:13 (1789133593)
lmv.lustre-clilmv-ffff9d4d918e6800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9d4d918e6800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9d4d918e6800.qos_exclude_prefixes=_temporary