== sanity test 413k: QoS mkdir exclude prefixes ========== 13:54:45 (1787853285)
lmv.lustre-clilmv-ffff9beaec302800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9beaec302800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9beaec302800.qos_exclude_prefixes=_temporary