== sanity test 413k: QoS mkdir exclude prefixes ========== 01:10:23 (1790745023)
lmv.lustre-clilmv-ffff89d5b82c8800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff89d5b82c8800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff89d5b82c8800.qos_exclude_prefixes=_temporary