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This is to install your Ubuntu Xen Guest to use virtualized hardware (HVM) to paravirtualized (PV) to have a better performance.
Steps:
1. New VM
* Two choices:
- Install from ISO Library: ubuntu-12.04.1-server-amd64.iso
- Install from URL: http://ftp.twaren.net/Linux/Ubuntu/ubuntu/
* 2 vCPUs
* 2048 MB RAM
2. Manually or automatically configure the IP
IP: 10.???.???.??? (DHCP: 10.0.0.1 — 10.0.0.255)
Netmask: 255.0.0.0
Gateway: 10.255.255.254
Name server: 8.8.8.8
3. Make a separate /boot partition
A. Partition method: Manual
B. Virtual disk 1 (xvda) (assume to be 8GB, which is the default value for Ubuntu)
C. Create new empty partition: Yes
D. Create new partition — /boot
a. 256MB
b. Primary
c. Beginning
d. Use as: Ext3 journaling file system <– “Ext3″ is IMPORTANT
e. Mount point: /boot
f. Reserved blocks: 1%
g: Bootable flag: on
h: Done setting up the partition
E. Create new partition — /
a. 6GB
b. Primary
c. Beginning
d. Use as: Ext4 journaling file system (default)
e. Mount point: / (default)
f. Reserved blocks: 1%
g: Bootable flag: off (default)
h: Done setting up the partition
F. Create new partition — swap
a. 2.3GB
b. Primary
c. Use as: swap area
d: Done setting up the partition
G. The result:
Virtual disk 1 (xvda) – 8.6 GB Xen Virtual Block Device
> #1 primary 254.8 MB B f ext3 /boot
> #2 primary 6.0 GB f ext4 /
> #3 primary 2.3 GB f swap swap
fdisk -l /dev/xvda
Device Boot Start End Blocks Id System
/dev/xvda1 * 2048 499711 248832 83 Linux
/dev/xvda2 499712 12218367 5859328 83 Linux
/dev/xvda3 12218368 16775167 2278400 82 Linux swap / Solaris
H. Finish partitioning and write changes to disk
I. Yes
4. No automatic updates
5. Select only “OpenSSH server”
6. Install GRUB boot loader to MBR: Yes.
7. UTC Time: Yes.
8. Boot, login, and become root. Command:
sudo -s
9. [2] Update /etc/fstab. Two ways to do it.
A. Use sed to do the job. Command:
cd /etc
mv fstab fstab.orig
cat fstab.orig | sed -e “s/errors=remount-ro/noatime,nodiratime,errors=remount-ro,nobarrier/” | sed -e “s/defaults/nobarrier/” > fstab
B. Or, manually replace
errors=remount-ro
with:
noatime,nodiratime,errors=remount-ro,nobarrier
and
defaults
with:
nobarrier
to fix the read-only file system issue.
10. Reboot. Command:
sync ; sync ; reboot
11. Boot, login, and become root. Command:
sudo -s
12. Install PV Linux kernel. Command:
apt-get install linux-virtual linux-image-virtual linux-headers-virtual
13. Remove Generic Linux kernel. Command:
apt-get remove linux-generic linux-headers-generic linux-image-generic
apt-get autoremove
cd /boot
rm *-generic
cd /
14. Update the grub boot loader. Command:
update-grub
15. Reboot to check if everything is ok. Command:
sync ; sync ; reboot
16. Boot, login, and become root. Command:
sudo -s
17. Select xs-tools.iso from “DVD Drive 1″
18. Mount XenServer Tools. Command:
mount /dev/xvdd /mnt
mount: block device /dev/xvdd is write-protected, mounting read-only
19. Install XenServer Tools. Command:
cd /mnt/Linux
dpkg -i *amd64.deb
cd /
umount /mnt
(It’s ok to fail.)
sync ; sync; reboot
or download
wget http://xen-tools.org/software/xen-tools/xen-tools_4.3.1-1_all.deb
dpkg -i xen-tools_4.3.1-1_all.deb
apt-get install -f
20. Eject xs-tools.iso from “DVD Drive 1″
Ubuntu 12.04 Xen Guest - Install as Paravirtualized (PV) and Xen Tools
Read Complete Post From Source: BLog.CripperZ.SG
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