== sanity test 413k: QoS mkdir exclude prefixes ========== 04:39:13 (1787474353)
lmv.lustre-clilmv-ffff8d487085b000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8d487085b000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8d487085b000.qos_exclude_prefixes=_temporary