== sanity test 413k: QoS mkdir exclude prefixes ========== 08:15:18 (1787746518)
lmv.lustre-clilmv-ffff925ed15f4800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff925ed15f4800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff925ed15f4800.qos_exclude_prefixes=_temporary