Re: Rebuild initrd to get dev-mapper working

Craig White wrote:

On Mon, 2006-12-11 at 13:45 +0800, Hadders wrote:

Craig White wrote:

On Mon, 2006-12-11 at 13:17 +0800, Hadders wrote:

Hi all,
  I'm very close to getting my new hardware setup working. It kinda does.

I'm using the Intel SATA RAID to get RAID 0, Grub as a boot manager, have installed XP and copied my existing FC5 setup "over" to the new container.

I can boot into this new setup, but only with the stock Kernel. When I try the latest Kernel, the device mapper doesn't work and as such, the system can't find the filesystems.

Over on the ata.raid list, someone has suggested that I run the following:

 > dmraid -a n && dmraid -a y
Which deactivates/activates the RAID container in one go?
Then rebuild the initrd for the latest kernel I have (but not running)

I would assume the safest place to run this command would be from runlevel 1?

Any tips would be appreciated.

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can't think of any reason that runlevel would matter since initrd is
loaded only upon boot.

The way I would probably handle it on my system...

mkinitrd initrd-2.6.18-1.2239.fc5.img.custom 2.6.18-1.2239.fc5
cp initrd-2.6.18-1.2239.fc5.img initrd-2.6.18-1.2239.fc5.img.saved
mv initrd-2.6.18-1.2239.fc5.img.custom initrd-2.6.18-1.2239.fc5.img

Though I have learned to check the contents of /etc/modprobe.conf to
make certain that things are the way that I want before I execute
mkinitrd

Craig

I was thinking about the runlevel because I was going to blink the RAID container out/in of existence briefly, figuring the less things running, the less likely something might complain.

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no way to know - what mount points are involved.

If /bin is involved forgettaboutit

If /var is involved, I would probably suggest runlevel 1 would probably
be a good idea because it's gonna dump messages to console which gets
messy
----

When I download the latest kernel and install it through yum/rpm process, does an initrd get built automatically?

----
yes

Craig

Then I can't see how this will solve my problem, theoretically.

Hmmm, I will try anyway, because I'm not sure what else I can do.