Changes

describes technical aspects. I want to note, that technical aspects depend a biton certain version of kernel, aufs and cloop you're using. For example some smallchanges in code (functions argument type change and alike) are necessary. I usedaufs-20061113 and cloop-2.05-1 because these versions were used on in KNOPPIX 5.1.1.2.6.18-8.el5-028stab027 OpenVZ kernel was used.

# Create Somehow obtain OpenVZ Debian package packages: kernel, vzctl, vzquota and some other kernel-related packagestemplate# Uninstall old previous Linux kernel and related packages from extracted tree and# install Install OpenVZ kernel Debian packages there# Uninstall some packages from extracted tree in order to free some space for# the next step# Install vzctl/vzquota/templates in the tree

# Build aufs and cloop kernel modules against OpenVZ kernel# Copy required kernel these modules in appropriate places on the disc# Modify initrd image of KNOPPIX

 Let's copy contents of this iso to to the hard drive:

rm -f r mnt

variouse various applications. On CD all this information is stored in one a single file:

 KNOPPIX.img file can be mounted using usual '-o loop' option. Next our step is to create a copy of KNOPPIX file system tree on the hard drivedisk.Note, that we can't use 'cp' tool here, because of hardlinks and special files. We need to should use rsynс:

 Now we should set up OpenVZ environment in obtained tree: kernel, vzctl, vzquota, template. For vzctl and vzquota we can use precompiled packages from http://debian.systs.org. But at the moment we have to create kernel Debian package by self, because at the moment we need additional patches in order all to work smoothly (but this it will be unnecessary soon, when patches will be included in main OpenVZ patch). I created a Debian VE on my machine and install there kernel-package package, that allows to create Debian kernel packages easily. After that the creation of package is something like that:

vim linux-2.6.18-8.el5-028test027/Makefile # here we add right releaseextraversion: -8.el5-028test027

 Don't delete sources and compilation of this kernel. A bit later we'll need to build aufs and cloop kernel modules against this kernel.Now I download vzctl and vzquota Debian packages from http://debian.systs.org and on a template:

Now copy Copying packages to KNOPPIX tree and chroot there:

 In chrooted environment we need to remove all kernel related packages. In KNOPPIX 5.1.1 2.6.19 vanilla kernel is used, so we can easilyidentifyidentify all kernel-related packages and eliminate them using this knowledge:

apt-get remove linuxtlinux-image-2.6.19

And now install new Installing OpenVZ tools (don't be afraid about warnings: they are ok)

[TODO: remove other Here I want to note one thing. We added some data to the KNOPPIX image,so its size increased. If you want to burn iso on CD/DVD later you shouldthink of removing some packages to free disk space]. I miss this point, but you're aware.Cleaning After all we need to clean upchrooted environment:

 That's greategreat, now we have all the tree ready, let's compress it in the new image using create_compressed_fs tool:

Now we need The next our step is to compile aufs and cloop kernel modules for our new against OpenVZ kernel. Let's start from cloop module.We uncomment one A definition in sourcemust be commented, because we're using RHEL-based kernel. The patch below shows what to do:

OKGetting the sources, let's compile cloopbuilding:

vim compressed_loop.c # uncommenting define here

 After that you should have cloop.ko file in current directory. Later we will copy it to appropriate place.What about aufs? Get this module the sources from cvs. I use this used 20061113 version (20061113), because this version is used in KNOPPIX 5.1.1.The following changes are required in AUFSaufs, because we use 're using rhel5-based kernel:

TODOBuilding aufs: (FOR NEWER AUFS ONE MORE PATCH with "(deleted)"<pre></pre>

[TODO] CREATE GOOD CONTENTS TABLE OF THIS PARTNow you have an aufs.ko file in current directory. Next we need to add these modules to the disc.