Xen Memory Cap

From SolusVM

You need to add a memory cap to the host machine in the grub.conf

Heres an example:

[root@server ~]# cat /boot/grub/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/md1
# initrd /initrd-version.img
#boot=/dev/md0
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-164.9.1.el5xen)
root (hd0,0)
kernel /xen.gz-2.6.18-164.9.1.el5 dom0_mem=512m
module /vmlinuz-2.6.18-164.9.1.el5xen ro root=/dev/md1
module /initrd-2.6.18-164.9.1.el5xen.img
title CentOS (2.6.18-164.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-164.el5 ro root=/dev/md1
initrd /initrd-2.6.18-164.el5.img
[root@server ~]# 

You see the kernel line here: kernel /xen.gz-2.6.18-164.9.1.el5 dom0_mem=512m

Add dom0_mem=512m to the end of your kernel line and reboot the server.