[CentOS] Drive failed in 4-drive md RAID 10

Fri Sep 18 20:19:39 UTC 2020
Kenneth Porter <shiva at sewingwitch.com>

--On Friday, September 18, 2020 10:53 PM +0200 Simon Matter 
<simon.matter at invoca.ch> wrote:

> mdadm --remove /dev/md127 /dev/sdf1
> and then the same with --add should hotremove and add dev device again.
> If it rebuilds fine it may again work for a long time.

Thanks. That reminds me: If I need to replace it, is there some easy way to 
figure out which drive bay is sdf? It's an old Supermicro rack chassis with 
6 drive bays. Perhaps a way to blink the drive light?