== sanity test 413k: QoS mkdir exclude prefixes ========== 14:05:58 (1786039558)
lmv.lustre-clilmv-ffff9dc2b3651800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9dc2b3651800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9dc2b3651800.qos_exclude_prefixes=_temporary