== sanity test 413k: QoS mkdir exclude prefixes ========== 09:42:23 (1787146943)
lmv.lustre-clilmv-ffff8c5c4800e800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8c5c4800e800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8c5c4800e800.qos_exclude_prefixes=_temporary