== sanity test 413k: QoS mkdir exclude prefixes ========== 23:42:04 (1789616524)
lmv.lustre-clilmv-ffff95c20a6db800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff95c20a6db800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff95c20a6db800.qos_exclude_prefixes=_temporary