== sanity test 413k: QoS mkdir exclude prefixes ========== 00:03:53 (1781237033)
lmv.lustre-clilmv-ffff999d1d63f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff999d1d63f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff999d1d63f000.qos_exclude_prefixes=_temporary