== sanity test 413k: QoS mkdir exclude prefixes ========== 12:35:55 (1787848555)
lmv.lustre-clilmv-ffff9efd86769800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9efd86769800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9efd86769800.qos_exclude_prefixes=_temporary