I've been battling with getting RAID1 working on the root filesystem of a
Cobalt raq3 (running RedHat 7.3) for about a week.
The current problem is that the Raq3 PROM will not mount a root
filesystem different to the one that it loads the kernel from initially.
The PROM seems to use a variable "set_boot_dev" to get a partition name.
It mounts this partition, gets a file /boot/vmlinux.gz from it, unzips it,
and runs.
I have hda2 (my original root partition) and hdg1 parts of a mirror setup
as /dev/md1, which is to be mounted as /. I used the "failed-disk"
directive to create md1 as / - however, after booting, md1 is mounted on /
fine, but I cannot add hda2 to this with raidhotadd:
[root@midir root]# raidhotadd /dev/md1 /dev/hda2
md: can not import hda2, has active inodes!
md: error, md_import_device() returned -16
/dev/md1: can not hot-add disk: invalid argument.
Does anyone have any idea what could be happening, or how I could resolve
this ?
I think I'm using lilo to some degree, as when the cobalt boots, it loads
a 2.2.16 kernel from it's PROM, and spits out:
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 76k freed
Warning: unable to open an initial console.
BOOTLOADER: Mapping in physical locations
BOOTLOADER: load_addr=0xc1804000 ret_data=0xc1a050ac
BOOTLOADER: opening "/boot/vmlinux.gz"
BOOTLOADER: reading "/boot/vmlinux.gz"
BOOTLOADER: read 1254176bytes
BOOTLOADER: unmounting /
BOOTLOADER: calling reboot notifiers
stopping all md devices.
flushing ide devices: hdg
disabling network interfaces.
resetting sym53c8xx scsi bus(es)
sym53c875-0: detaching ...
sym53c875-0: resetting chip
BOOTLOADER: mapping 16M-32M for ride home
BOOTLOADER: disabling interupts
BOOTLOADER: flushing cache
BOOTLOADER: Leap of faith!
Back in ramcode: done
Second stage kernel: Decompressing - done
extract_header_info:
ehead: 0x01500000
shead: 0x01747eb0
Machine: 0x00000003
Kernel Entry: 0xc0105000
Program header size: 0x00000020
Number of Program headers: 1
Section Header size: 0x00000028
Number of section headers: 23
relocate_and_zero:
Offset: 0x00001000
VAddr: 0xc0100000
PAddr: 0xc0100000
Filesize: 0x0023f6a0
Memsize: 0x0027aa58
Flags: 0x00000007
relocate: src = 0x01501000, dest = 0x00100000, size = 0x0023f6a0
Kernel cmd line: console=ttyS0,115200 ip=off
Booting kernel...
Linux version 2.4.18-4jp (root@jlooney) (gcc version 2.96 20000731 (Red Hat Linux 7.3 2.2BIOS-provided physical RAM map:
But in case it is a problem with the lilo.conf:
disk=/dev/md1
bios=0x80
sectors=63
heads=16
cylinders=39560
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
image=/boot/boot/vmlinuz-2.4.18-3
root=/dev/md1
read-only
label=LinuxRaid
Should that work ?
John
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