== sanity test 413k: QoS mkdir exclude prefixes ========== 01:38:20 (1746077900)
lmv.lustre-clilmv-ffff88013731b000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88013731b000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88013731b000.qos_exclude_prefixes=_temporary