== sanity test 413k: QoS mkdir exclude prefixes ========== 22:14:56 (1783649696)
lmv.lustre-clilmv-ffff92f508af7800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff92f508af7800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff92f508af7800.qos_exclude_prefixes=_temporary