== sanity test 413k: QoS mkdir exclude prefixes ========== 10:02:19 (1788876139)
lmv.lustre-clilmv-ffff95d490aed000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff95d490aed000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff95d490aed000.qos_exclude_prefixes=_temporary