[CentOS] Software RAID and GRUB on CentOS 7

Thu Aug 11 07:26:48 UTC 2016
Nicolas Kovacs <info at microlinux.fr>


When I perform a software RAID 1 or RAID 5 installation on a LAN server
with several hard disks, I wonder if GRUB already gets installed on each
individual MBR, or if I have to do that manually. On CentOS 5.x and 6.x,
this had to be done like this:

# grub
grub> device (hd0) /dev/sda
grub> device (hd1) /dev/sdb
grub> root (hd0,0)
grub> setup (hd0)
grub> root (hd1,0)
grub> setup (hd1)
grub> quit

I'd like my server to be able to boot a degraded software RAID after an
eventual hard disk failure.

Any suggestions?

Niki Kovacs
Microlinux - Solutions informatiques durables
7, place de l'église - 30730 Montpezat
Web  : http://www.microlinux.fr
Mail : info at microlinux.fr
Tél. : 04 66 63 10 32