== sanity test 413k: QoS mkdir exclude prefixes ========== 03:41:38 (1759822898)
lmv.lustre-clilmv-ffff9d4b0963c800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9d4b0963c800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9d4b0963c800.qos_exclude_prefixes=_temporary