== sanity test 413k: QoS mkdir exclude prefixes ========== 21:07:25 (1786842445)
lmv.lustre-clilmv-ffff934d060a8800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff934d060a8800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff934d060a8800.qos_exclude_prefixes=_temporary