== sanity test 413k: QoS mkdir exclude prefixes ========== 06:48:50 (1788691730)
lmv.lustre-clilmv-ffff941f6ae9f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff941f6ae9f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff941f6ae9f000.qos_exclude_prefixes=_temporary