== sanity test 413k: QoS mkdir exclude prefixes ========== 11:49:02 (1743522542)
lmv.lustre-clilmv-ffff8f52fb484000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8f52fb484000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8f52fb484000.qos_exclude_prefixes=_temporary