Xen domU guest gaining time.
Posted by john at 7:52 PM
0 comments - Categories: (Tech) Linux | (Tech) Open Source | (Tech) Xen
Recently I had setup a Centos Xen dom0 and noticed that the centos guest was gaining time by significant amounts. after some research and a couple chats with folks on irc xen I found the below answer worked best:
edit your grub.conf file
nano /etc/grub.conf
so that
kernel /vmlinuz-2.6.18-274.12.1.el5.centos.plus ro root=/dev/VolGroup00/LogVol00
reads:
kernel /vmlinuz-2.6.18-274.12.1.el5.centos.plus ro root=/dev/VolGroup00/LogVol00 divider=10
and reboot.
Sidenote: in your guest configuration file if you do not want to use UTC time set localtime = 1
Final note: Do not run ntp on your guest system as it pulls time from the dom0 instead run ntp on the dom0.