== sanity test 413k: QoS mkdir exclude prefixes ========== 23:20:44 (1781234444)
lmv.lustre-clilmv-ffff924cd8006000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff924cd8006000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff924cd8006000.qos_exclude_prefixes=_temporary