== sanity test 413k: QoS mkdir exclude prefixes ========== 21:21:14 (1781227274)
lmv.lustre-clilmv-ffff9ca146996800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9ca146996800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9ca146996800.qos_exclude_prefixes=_temporary