== sanity test 413k: QoS mkdir exclude prefixes ========== 20:46:14 (1784767574)
lmv.lustre-clilmv-ffff916ec7c2a800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff916ec7c2a800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff916ec7c2a800.qos_exclude_prefixes=_temporary