On 12/08/16 01:20, William A. Mahaffey III wrote:
On 08/11/16 02:33, Nicolas Kovacs wrote:
Hi,
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
I have an aging FC14 (!!!!) system, w/ mdadm RAID partitions. I have
/boot setup as mdadm RAID1's, 2 drives (actually partitions). Machine
boots AOK, & I believe it does (& maintains) that setup automatically.
I got that recommendation from a mailing list ages ago, can't remember
where, sorry. $0.02, no more, no less ....
[root@Q6600:/etc, Thu Aug 11, 08:25 AM] 1018 # df -h
Filesystem Type Size Used Avail Use% Mounted on
/dev/md1 ext4 917G 8.0G 863G 1% /
tmpfs tmpfs 4.0G 0 4.0G 0% /dev/shm
/dev/md0 ext4 186M 60M 117M 34% /boot
/dev/md3 ext4 1.8T 1.4T 333G 81% /home
[root@Q6600:/etc, Thu Aug 11, 08:26 AM] 1019 # uname -a
Linux Q6600 2.6.35.14-106.fc14.x86_64 #1 SMP Wed Nov 23 13:07:52 UTC
2011 x86_64 x86_64 x86_64 GNU/Linux
[root@Q6600:/etc, Thu Aug 11, 08:26 AM] 1020 #
I too use this kind of set up. however I do not believe that anything on
the MBR is updated automatically by any yum/rpm updates. Thus in this
kind of a setup, one needs to take manual steps.
HTH
Rob
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