== sanity test 413k: QoS mkdir exclude prefixes ========== 18:04:39 (1787781879)
lmv.lustre-clilmv-ffff9951c863a000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9951c863a000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9951c863a000.qos_exclude_prefixes=_temporary