== sanity test 413k: QoS mkdir exclude prefixes ========== 10:13:00 (1790950380)
lmv.lustre-clilmv-ffff922d2eeb1000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff922d2eeb1000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff922d2eeb1000.qos_exclude_prefixes=_temporary