== sanity test 413k: QoS mkdir exclude prefixes ========== 20:56:50 (1763085410)
lmv.lustre-clilmv-ffff9760c8b96800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9760c8b96800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9760c8b96800.qos_exclude_prefixes=_temporary