== sanity test 413k: QoS mkdir exclude prefixes ========== 08:19:07 (1787401147)
lmv.lustre-clilmv-ffff9fe9728c1800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9fe9728c1800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9fe9728c1800.qos_exclude_prefixes=_temporary