== sanity test 413k: QoS mkdir exclude prefixes ========== 21:19:09 (1787707149)
lmv.lustre-clilmv-ffff986b4d305800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff986b4d305800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff986b4d305800.qos_exclude_prefixes=_temporary