== sanity test 413k: QoS mkdir exclude prefixes ========== 08:23:00 (1789388580)
lmv.lustre-clilmv-ffff8b6805776000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b6805776000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b6805776000.qos_exclude_prefixes=_temporary