== sanity test 413k: QoS mkdir exclude prefixes ========== 12:26:40 (1781627200)
lmv.lustre-clilmv-ffff92886e01a000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff92886e01a000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff92886e01a000.qos_exclude_prefixes=_temporary