Joe Morris (NTM) wrote: > On 12/02/2007 03:32 PM, Jim Flanagan wrote: > >> Greetings all, >> >> I'm trying to do a new install of opensuse 10.3 on a new server box. I'd >> like to have raid1 (mirror) set up with 2 drives. I don't know the full >> differences between md raid and dm raid, but I followed the instructions >> on installing md raid on the opensuse wiki, using yast to set up the >> raid partitions. The problem is the system won't boot on the first >> reboot after install. I originally set all partitions to be extended >> (not primary) which didn't boot. So I started over from scratch and set >> /boot as primary partition with all others, swap, /, /home, etc as >> extended, but it still won't boot. At this point I had enabled raid in >> the bios for both sata controllers, but not set up the raid volume in >> the motherboard raid controller. >> >> Switching gears I then tried setting up the dm raid in the bios and yast >> saw that as an nvidia_sometingorother and I believe that would have >> installed and booted, but I'm unsure whether or not I should use the dm >> raid or if the md raid is preferable. >> >> > Mine did work, but I have had a fair bit of experience with md raid. > First, you mentioned you had a separate boot partition. Is that also a > part of your raid1? Since grub does not understand md raid yet, it > needs to boot from the MBR of one of the drives. Obviously, the generic > MBR (which boots the active partition) will not work with md raid, but > that is the default. During install, you need to change where grub is > installed, putting it in the MBR. On mine, my /boot is on my raid1 > root. This is noted in grub's menu.lst. Grub finds the /boot/grub > directory initially via one of the drives, i.e. sda5. It then loads > stage 1.5, and the raid1 modules have to be a part of the initrd for it > to find and use the raid1. When I upgraded our office server, I did > change the defaults for grub, but it had no problems finding the raid1 > root or boot, and installed quite smoothly, so it does work. Just > remember, the default is a generic boot loader in the MBR, and grub is > NOT installed in the MBR. Since if boot is on raid, that partition > cannot be made active, so it cannot boot that way. GRUB needs to be > installed in the MBR of the drive your BIOS is set to boot from. HTH. > > I haven't gotten this working just yet, but I think I'm making progress. You gave me something to work with. Thanks. Will revert.
Jim F -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
