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xen-users
Re: [Xen-users] Time change conundrum
As stated I have no issue with drift whilst running.
It's on DomU boot, the time is not the time that dom0 is set to if
dom0 time was changed after boot.
Niall Fleming BSc. (Hons)
Systems Administrator
Webanywhere Limited
Phone: 0800 862 0131 Ext: 203
Web: http://www.webanywhere.co.uk
Aire Valley Business Centre, Lawkholme Lane, Keighley, BD21 3BB
Registered in England with company number 4881346
On 02/11/2011 11:39, Miles Fidelman wrote:
First
off... take a look at http://wiki.debian.org/Xen,
look for the section on 'clocksource/0: Time went backwards'
Niall Fleming wrote:
Here's a confusing issue for you, I have a
bunch of machines running Xen 4.1.
The time in the BIOS was wrong at machine power on, so
logically, I set the time in
Dom0 with NTP and synced it back to the hardware clock (just in
case). I restart the
VMs which came up before the time changed, so that they would
get the correct time
on startup (as has always worked in the past with Xen 3.x).
The VMs do *not* come up with the initial clock set by the
system clock in Dom0, they
persist in using the time before it was set on the host system
(plus however many
seconds/minutes etc.) have passed, so the original clock time on
Dom0 is ticking along
somewhere even though every utility in the system seems to
report the 'correct' time
as I have set by NTP.
Any ideas? I'm at my wit's end with it, I've tried different
kernels (albeit with [almost] the same
config), both jeremy-git-xen-next-2.6.32 and linux 3.1.0+
(latest from git). I've tried with different
Xen version 4.1.0/4.1.1/4.1.2 and the problem exists in each of
them.
I know that I can run NTP in each VM, but I'd like the system
time to be correct at boot up as it
will make the timestamps in the logs very confusing when it
jumps back an hour.
--
*Niall Fleming BSc. (Hons)*
Systems Administrator
Webanywhere Limited
Phone: 0800 862 0131 Ext: 203
Web: http://www.webanywhere.co.uk
Aire Valley Business Centre, Lawkholme Lane, Keighley, BD21 3BB
Registered in England with company number 4881346
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