== sanity test 413k: QoS mkdir exclude prefixes ========== 04:49:30 (1786956570)
lmv.lustre-clilmv-ffff8a440726e800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8a440726e800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8a440726e800.qos_exclude_prefixes=_temporary