Hi Alastair,
On Tue, Feb 16, 2010 at 11:57:22AM +0000, Alastair Sherringham wrote:
To re-cap, I have had problems where the clock on
my VP is 30 mins in
the future on boot. This behaviour started after a dist-upgrade to
Debian Lenny a few weeks ago. Correcting this (ntpdate,ntpd) causes
dovecot to die, and since Dovecot is what does AUTH for Postfix, both
Dovecot and Postfix are useless without a manual restart.
Linux calliope 2.6.26-2-xen-686 #1 SMP Wed Feb 10 11:28:19 UTC 2010
i686 GNU/Linux
Are you using clocksource=jiffies on the kernel command line?
What is /proc/sys/xen/independent_wallclock set to?
I think I have exactly the same problem, though I don't run dovecot,
hopefully Alastair doesn't mind me jumping in on his thread.
I don't seem to have clocksource=jiffies, and independent wallclock
seems to be 1:
joseph@button:~$ cat /boot/grub/menu.lst | grep -i jif
joseph@button:~$ cat /proc/sys/xen/independent_wallclock
1
I also infrequently get these messages on the console, no idea if
they're related or not:
[22433.110835] clocksource/0: Time went backwards: ret=6a3118eecc83d3
delta=-14067480 shadow=6a3118c913a34f offset=268faf29
Joseph