[Linux-PowerEdge] ] CentOS R410 SAS config issues

ch urnd churnd at gmail.com
Thu Jul 18 08:24:13 CDT 2013


How do I flip the boot order of the LUNs?


On Thu, Jul 18, 2013 at 9:20 AM, Rhea, Cristopher J. <crhea at mayo.edu> wrote:

> =================================================
> I have two R410 servers, each configured identically.  Each server has 4
> 70GB SAS drives hooked up to it's 6i/R controller.  I'm trying to configure
> each to have two RAID1 mirrors.  The problem is when I do this, then go to
> install CentOS, it will install but then won't boot after the install is
> finished.  It doesn't make it to the bootloader (grub).
>
> It has something to do with the fact that I have two virtual drives
> configured. If I make the other two drives hot spares of the first RAID1
> mirror I create, it will install & boot fine.  I'm making sure I install
> the boot loader on the right virtual drive too.
>
> Some screenshots:
>
> BIOS:  http://i.imgur.com/468SWpV.png
> VD1:  http://i.imgur.com/I1z2HZ8.png
> VD2:  http://i.imgur.com/uYU11nb.png
> 6i/R:  http://i.imgur.com/CJd4kP9.png
>
>
> BIOS only allows chosing one virtual drive.  Changing the 6i/R's boot
> settings (BIOS/OS) doesn't help.  At this point I'm stumped.  I'm not sure
> what else I can try.  I'm wondering if there's some limitation I don't know
> about.  Any help is appreciated.
>
> Thanks.
> =================================================
>
> Flip the boot order of the LUNs.
>
> I've had situations in loading RedHat/CentOS where the drive order the OS
> saw is not what the BIOS
> uses for boot (i.e., grub installed on the "wrong" disk).
>
> --- Cris
>
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