oracle 12c root.sh,安装12cGRID的时候，执行root.sh报错

有一个alert日志下有以下信息：没太看明白

06-Feb-20 23:36 ASMCMD (PID = 61437) Given command - afd_dsget

06-Feb-20 23:36 ASMCMD (PID = 61350) Given command - afd_lsdsk

06-Feb-20 23:36 NOTE: afdtool -afdds query

06-Feb-20 23:36 NOTE: Invoking “/bin/su grid -c “/oracle/app/12.2/grid/bin/afdtool -afdds query”” as user “grid”

06-Feb-20 23:36 NOTE: command execution (/oracle/app/12.2/grid/bin/afddriverstate loaded) returned : 1

06-Feb-20 23:36 reverted LANG/NLS_LANG to en_US.UTF-8/

06-Feb-20 23:36 Error: AFD-9206: AFD device driver loaded status: ‘false’

06-Feb-20 23:36 NOTE: Verifying AFD driver state : Not loaded

06-Feb-20 23:36 ASMCMD-9520: AFD is not ‘Loaded’

06-Feb-20 23:37 NOTE: command execution (/bin/su grid -c “/oracle/app/12.2/grid/bin/afdtool -afdds query”) returned : 1

06-Feb-20 23:37 ASMCMD-9511: failed to obtain required AFD disk string from Oracle Local Repository