== sanity test 413k: QoS mkdir exclude prefixes ========== 22:35:07 (1767324907)
lmv.lustre-clilmv-ffff9eb348780000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9eb348780000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9eb348780000.qos_exclude_prefixes=_temporary