Controller partition order?

[Leonid Flaks]

  On 12/02/2010 01:08 PM, Jared Rodriguez wrote:
>>> I'm building a bunch of virtual machines and I want to make sure 
>>> that the swap
>>> partition comes first on the disk. Sometimes we need to expand 
>>> storage on VMs
>>> and this is much harder if the swap partition is after the / 
>>> partition. Is
>>> there a way with the partition command to control where on the disk a
>>> partition goes?
>
> We use something like this:
>
> zerombr yes
> clearpart --all --initlabel
> part /boot --fstype "ext3" --size=100 --asprimary
> part /tmp --fstype "ext3" --size=2048 --asprimary
> part / --fstype "ext3" --size=1 --grow
> %include /tmp/swap.cfg
>
> swap is dynamically generated during the bootstrap process. The 
> configuration creates the following partitions:
>
> /dev/sda1   /boot
> /dev/sda2   /tmp
> /dev/sda3   swap
> /dev/sda4   extended
> /dev/sda5   /
>
> I am not aware of any other way to make anaconda honor the position of 
> the swap partition.
>
> jrod
We use somewhat similar solution:

part --onpart=sda1 swap
part --onpart=sda2 / --fstype ext4


For that to work  in %pre section we run fdisk, which we feed with file 
that has all fdisk commands written one per line.

%pre
/usr/bin/wget -nv http://myserver/path/to/file/fdisk.input -O /tmp/fdisk.input
/usr/sbin/fdisk /dev/sda<  /tmp/fdisk.input


Leon