== sanity test 413k: QoS mkdir exclude prefixes ========== 02:24:42 (1789712682)
lmv.lustre-clilmv-ffff8db584898000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8db584898000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8db584898000.qos_exclude_prefixes=_temporary