== sanity test 413k: QoS mkdir exclude prefixes ========== 00:20:18 (1786767618)
lmv.lustre-clilmv-ffff8b6396a0b000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b6396a0b000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b6396a0b000.qos_exclude_prefixes=_temporary