== sanity test 413k: QoS mkdir exclude prefixes ========== 19:09:29 (1717024169)
lmv.lustre-clilmv-ffff8800b0b88000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b0b88000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b0b88000.qos_exclude_prefixes=_temporary