oneman wrote:
On 12 sep 2009, at 02:54, Carlos Bergero wrote:
Hey ppl:
I'm currently trying to install Lenny AMD64 502a in a
Intel Xeon Q8200 8Gb Ram, with 4 Sata2 500Gb Discs. Problem is that
after finishing partitioning and installing the Harware, Lilo or Grub
wont install, Lilo Reports Error Code '1' which makes no sence since
its an error related by the bios accessing the disk which shuld be
/dev/md0.
I dont have much expirience with RAID so not shure whats
wrong here, any lead would be great.
AFAIK you still can't boot straight from software RAID 5 or 10 (I
guessed that is what you're using). You'll need a small slice on every
disk, setup as software RAID 1 for /boot. The rest can be placed in the
RAID 5 or 10 partitions. Lilo can't see the disc /dev/md0 at boot since
it has no way of assembling the array. The kernel needs to be booted
first. When using RAID1, no array needs to be assembled, since they are
indentical copies. The boot manager can use the first disk it finds.
Mayby the latest LILO of GRUB2 can handle /boot on RAID other than
RAID1, last time I searched I only found support for /boot on lvm, not
RAID5
The trick is to install GRUB and a kernel (and the initrd) where it can
be found. I will be happy if an improvement is devised that allows
native booting of of RAID 10. (I favor RAID 10 for certain purposes,
even if that makes me an oddball.)
What about RAID 0?
As you say, there some solutions, e.g., booting off a teeny-tiny flash
SSD, but nothing really satisfactory. Having /boot on a RAID 1
partition is not really any more satisfactory than that, although it
does avoid a separate device. At one time, I would have booted from
floppy, but that is no longer practical. A boot CD? Not really easily
done, but possible. (The trick would be automating the process. Don't
want to require someone to always be there to hit two arrow keys and
Enter, I expect.)
Mark Allums
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