== sanity test 413k: QoS mkdir exclude prefixes ========== 12:15:17 (1786205717)
lmv.lustre-clilmv-ffff92db5060f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff92db5060f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff92db5060f000.qos_exclude_prefixes=_temporary