== sanity test 413k: QoS mkdir exclude prefixes ========== 07:41:30 (1787398890)
lmv.lustre-clilmv-ffff8cc32ff2d800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8cc32ff2d800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8cc32ff2d800.qos_exclude_prefixes=_temporary