== sanity test 413k: QoS mkdir exclude prefixes ========== 07:07:39 (1773659259)
lmv.lustre-clilmv-ffff936878aaa000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff936878aaa000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff936878aaa000.qos_exclude_prefixes=_temporary