== sanity test 413k: QoS mkdir exclude prefixes ========== 01:03:12 (1790744592)
lmv.lustre-clilmv-ffff94b909986800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff94b909986800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff94b909986800.qos_exclude_prefixes=_temporary