== sanity test 413k: QoS mkdir exclude prefixes ========== 12:52:21 (1787590341)
lmv.lustre-clilmv-ffff951dc5677000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff951dc5677000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff951dc5677000.qos_exclude_prefixes=_temporary