== sanity test 413k: QoS mkdir exclude prefixes ========== 08:01:53 (1744545713)
lmv.lustre-clilmv-ffff8801373e7800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8801373e7800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8801373e7800.qos_exclude_prefixes=_temporary