[CentOS-virt] Timezone issues with migrations between host kernel 3.10 and 3.18

Johnny Hughes johnny at centos.org
Thu Jul 30 11:40:35 UTC 2015

On 07/30/2015 06:38 AM, Johnny Hughes wrote:
> On 07/29/2015 11:38 AM, Nathan March wrote:
>> Hi All,
>> I'm seeing clock issues with live migrations on the latest kernel
>> packages, migrating a VM from 3.10.68-11 to 3.18.17-13 results in the VM
>> clock being off by 7 hours (I'm PST, so appears to be a timezone issue).
>> This is also between xen versions, but rolling the target back to 3.10
>> resolved so don't believe the recent XSA's are related.
>> Anyone else seen behavior like this or have any ideas on how to resolve?
> Some versions of CentOS have a hardware clock uses UTC check box.  If
> that is on, and if your hardware clock is instead set to local time,
> that can cause issues.
> Can you check that there is no UTC=True in /etc/sysconfig/clock

also, you can use tzselect to make sure the correct timezone is used.

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