== sanity test 413k: QoS mkdir exclude prefixes ========== 21:02:41 (1777424561)
lmv.lustre-clilmv-ffff96f2bbac0000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff96f2bbac0000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff96f2bbac0000.qos_exclude_prefixes=_temporary