RE: RAID0 DeviceDisappeared event happen when restart mdmonitor service

["Johnson Yan" <johnson_yan@usish.com>]

Hi Neil,
Thank you for the clarification.
I can remove the RAID0 MD's information from /etc/mdadm.conf to omit the monitor for RAID0, then so such event occurred when restart mdmonitor service, but the system won't re-assemble these RAID0 MD after every system reboot.
Do you have any good advice?

Best Regards,
Johnson

> Thanks Neil for always kindly help.
> The device disappeared event report when restart mdmonitor service, which
> will mdadm with options PIDFILE=/var/run/mdadm/mdadm.pid
> PATH=/sbin:/usr/sbin:$PATH
> RETVAL=0
> OPTIONS="-F -y -f -s -i $PIDFILE"
> 
> And I checked man page of mdadm which clear claimed :
> 
> 
>  DeviceDisappeared
>                   An  md  array  which previously was configured
> appears to no
>                   longer be configured. (syslog priority: Critical)
> 
>                   If mdadm was told to monitor an array which is RAID0 or
> Lin-
>                   ear,  then  it  will report DeviceDisappeared with the
> extra
>                   information Wrong-Level.  This is because RAID0  and
> Linear
>                   do not support the device-failed, hot-spare and resync
> oper-
>                   ations which are monitored.
> 
> Thanks again for your time.
> 
> Jack