== sanity test 413k: QoS mkdir exclude prefixes ========== 13:42:20 (1774892540)
lmv.lustre-clilmv-ffff90e62c8eb000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90e62c8eb000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90e62c8eb000.qos_exclude_prefixes=_temporary