On Sun, Oct 26, 2008 at 10:37:17PM -0400, Joe Landman wrote:
Hi folks:
We have been trying to build an operational initrd for a root drive
on software RAID1.
Basic specs: 2.6.23.14 kernel (though same issues with 2.6.27.2
kernel), on Centos 5.2, pair of SATA drives using libata and other
drivers, x86_64 architecture.
Custom built kernel or centos provided kernel?
Using mkinitrd --with=raid1 --with=libata --with=sd_mod ...
I am getting a kernel panic on switchroot, it can't find the root
file system. I did some googling, but could not find a similar
example.
unfortunately the kernel panic is a consequence of a previous error,
someone willing to help you would need to know everithing that was
spitted between the 'starting red-hat nash' message and the kernel
panic.
Do I need to create a specialized init script? Is there an
usually no, redhat/centos initrd should be able to boot from a raid1
example of this somewhere? I did look at the Documentation/md.txt and
tried the
md=0,sda1,sdb1 md=1,sda2,sdb2 md=2,sda3,sdb3
if you are using the centos kernel, raid is modular and this parameter
has no effect.
mkinitrd should use your /etc/mdadm.conf to discover how the array
should be laid out.
kernel boot time option, to no avail. Persistent superblocks are
on, and the devices have the right partition types.
partition types do not matter anymore.
Any suggestions? More things to read?
is your fstab correct?
is your mdadm.conf correct?
are you loading the correct drivers for your hd controller?
mkinitrd is a shell script, if all else fails, run it with sh -x and
read the output.
L.
--
Luca Berra -- bluca@xxxxxxxxxx
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