== sanity test 413k: QoS mkdir exclude prefixes ========== 21:35:43 (1786757743)
lmv.lustre-clilmv-ffff9a25d311b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9a25d311b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9a25d311b800.qos_exclude_prefixes=_temporary