[Xen-users] Time change conundrum

[Niall Fleming <niall.fleming@xxxxxxxxxxxxxxxxx>]

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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