--- a/systemd/mdcheck_start.service-orig	2020-04-03 15:30:01.212314524 +0800

+++ b/systemd/mdcheck_start.service	2020-04-03 15:30:07.881304097 +0800

@@ -13,5 +13,4 @@

 Type=oneshot

 Environment="MDADM_CHECK_DURATION=6 hours"

 EnvironmentFile=-/run/sysconfig/mdadm

-ExecStartPre=-/usr/lib/mdadm/mdadm_env.sh

 ExecStart=/usr/share/mdadm/mdcheck --duration ${MDADM_CHECK_DURATION}