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Full compilation instructions:
Download the openvz-patched kernel from;a%3Dsummary
git clone git://
Apply the etun patch
Apply the enable-promisc-default patch
cd mininet-rt/patches
follow README
udev/tmpfs/devtmpfs fail to mount the /dev directory properly
on boot. You'll have to create your own initrd, or use the one
provided. It has an updated init script that will create the
necessary devices, with the right permissions:
* Hard disk (sda, sda1, ...)
* Random number (random, urandom) -- SSH needs this, else it
will not start
* ttys (ptmx, tty$i, ..) -- else you won't be able to login
via ssh!
Configure the kernel:
cd linux-2.6.18
make menuconfig
Make sure the following options are selected:
\_ [*] Second extended fs support (CONFIG_EXT2_FS)
\_ [*] Ext3 journalling file system support (CONFIG_EXT3_FS)
\_ [M] Quota Support (CONFIG_QUOTA)
\_ [*] Compatibility with older quotactl interface (CONFIG_QUOTA_COMPAT)
\_ [*]Quota format v2 support (CONFIG_QFMT_V2)
\_ [*] VPS filesystem (CONFIG_SIM_FS)
\_ [M] Virtuozzo Disk Quota support (CONFIG_VZ_QUOTA)
\-> [*] Per-user and per-group quota in Virtuozzo quota partitions
\->[ ] Enable different security models
OpenVZ ... (what else :-)
\_[*] Virtual Environment support (CONFIG_VE)
\_ <M> VE calls interface (CONFIG_VE_CALLS)
\_ <M> VE networking (CONFIG_VE_NETDEV)
\_ <M> Virtual ethernet device (CONFIG_VE_ETHDEV)
\_ <M> VE device (CONFIG_VZ_DEV)
\_ [*] VE netfiltering (CONFIG_VE_IPTABLES)
\_ <M> VE watchdog module (CONFIG_VZ_WDOG)
\_ <M> Checkpointing & restoring Virtual Environments (CONFIG_VZ_CHECKPOINT)
User resources ... (User Beancounters)
\_ [*] Enable user resource accounting (CONFIG_USER_RESOURCE)
\_ [*] Account physical memory usage ( CONFIG_USER_RSS_ACCOUNTING)
\_ [*] Account disk IO (CONFIG_UBC_IO_ACCT)
\_ [*] Account swap usage (CONFIG_USER_SWAP_ACCOUNTING)
\_ [*] Report resource usage in /proc (CONFIG_USER_RESOURCE_PROC)
\_ [*] User resources debug features (CONFIG_UBC_DEBUG)
\_ [*] Debug kmemsize with cache counters (CONFIG_UBC_DEBUG_KMEM)
-> Device Drivers
-> Network device support
->Ethernet tunnel device driver support
Compile the kernel:
fakeroot make-kpkg --initrd --append-to-version=-openvz-etun kernel-image kernel-headers
Install the kernel:
sudo dpkg -i linux-image-2.6.18-openvz-etun.deb
sudo dpkg -i linux-headers-2.6.18-openvz-etun.deb
cd /boot
sudo mkinitramfs -k -o initrd.img-2.6.18-openvz-etun 2.6.18-openvz-etun
Update grub:
sudo update-grub2
Check boot order from /boot/grub/grub.cfg and /etc/default/grub
gcc4.4 doesn't like some of the kernel code. Either change the code to meet
gcc4.4 requirements, or use gcc <=4.3