hello,
i'm trying to set up root raid on a new system. it's an adaptec aaa-131u2
(which linux doesn't like for hardware-based raid) with two 9gb disks.
the biggest problem, i think, is that i can't get the system to boot off a
hard disk at all. during the (redhat 6.0) install i said to put lilo on
the mbr (/dev/sda). this didn't really work - when i bring the machine
up, it says something to the effect of "can't find operating system -
insert system disk," at which time i put the boot floppy that i created
during the install into the drive and boot fine.
i patched 2.2.12 (ignoring the one .rej) and have raidtools-0.90.
i tried to follow the root-raid instructions in jakob's howto but found
them slightly sparse. the part i didn't really understand was
-=-=-
Now, unmount the current /boot filesystem, and mount the boot device on
/mnt/newroot/boot instead. This is required for LILO to run successfully
in the next step.
Update /mnt/newroot/etc/lilo.conf to point to the right devices. The boot
device must still be a regular disk (non-RAID device), but the root device
should point to your new RAID. When done, run [..]
-=-=-
is it possible to have the /boot partition, including the raid-aware
kernel, on a floppy, and boot off that? yes, i know how failure-prone
floppies are. hopefully the machine won't reboot often 8-).
i copied the /mnt/newroot/etc/[raidtab,fstab,lilo.conf] to the floppy and
ran lilo -r /mnt/floppy, but it complained:
not a number: /dev/md1
any ideas/suggestions would be very welcome. i probably missed something
along the way. raidtab, fstab, and lilo.conf are included below.
thanks
-jon
--
Jonathan Nathan
Web Systems Engineer, CAIS Internet
[EMAIL PROTECTED]
raidtab:
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 8
persistent-superblock 1
device /dev/sdb6
raid-disk 0
device /dev/sda6
raid-disk 1
failed-disk 1
raiddev /dev/md1
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 8
persistent-superblock 1
device /dev/sdb1
raid-disk 0
device /dev/sda1
raid-disk 1
failed-disk 1
raiddev /dev/md2
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 8
persistent-superblock 1
device /dev/sdb2
raid-disk 0
device /dev/sda2
raid-disk 1
failed-disk 1
raiddev /dev/md3
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 8
persistent-superblock 1
device /dev/sdb5
raid-disk 0
device /dev/sda5
raid-disk 1
failed-disk 1
raiddev /dev/md4
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 8
persistent-superblock 1
device /dev/sdb7
raid-disk 0
device /dev/sda7
raid-disk 1
failed-disk 1
fstab:
/dev/md1 / ext2 defaults 1 1
/dev/sda5 /usr ext2 defaults 1 2
/dev/sda2 /var ext2 defaults 1 2
/dev/sda7 /web ext2 defaults 1 2
/dev/sda6 /work ext2 defaults 1 2
/dev/sda3 swap swap defaults 0 0
/dev/sdb3 swap swap defaults 0 0
/dev/fd0 /mnt/floppy ext2 noauto 0 0
none /proc proc defaults 0 0
none /dev/pts devpts mode=0622 0 0
/dev/sdb1 /mnt/newroot ext2 defaults 0 0
lilo.conf:
boot=/dev/sda
map=/boot/System.map
install=/boot/boot.b
prompt
timeout=50
image=/boot/vmlinuz
label=linux
root=/dev/md1
initrd=/boot/initrd-2.2.5-15smp.img
read-only
image=/boot/vmlinuz-2.2.5-15
label=linux-up
root=/dev/sda1
initrd=/boot/initrd-2.2.5-15.img
read-only
