[CentOS-virt] Time

Wed Jan 2 12:29:55 UTC 2013
Manuel Wolfshant <wolfy at nobugconsulting.ro>

On 01/02/2013 02:06 PM, Nico Kadel-Garcia wrote:
> On Wed, Jan 2, 2013 at 3:53 AM, Robert Dinse<nanook at eskimo.com>  wrote:
>>       Friday, I moved our servers to a new co-lo facility and ran into an
>> interesting problem with virtual machines.
>>       I did an orderly shutdown of the CentOS 6.3 host, and it in turn suspends
>> all the guests.  It took about an hour and a half to move and fire up the host.
> Suspends? Or shuts down? There's a big difference, and I don't think
> you'd have seen this problem with  the gu4ests shutdown.
>>       The guests, being suspended, were then an hour and a half behind and it
>> seems ntpd does not want to correct more than 1000 seconds of error so it would
>> not automatically adjust the clocks.
> ntpd is sometimes too smart for its own good. However, "rdate -s
> time.mit.edu" or other rdate server works very well and doesn't have
> the problems with not being able to run "ntpdate" while the ntpd is
> running.
ntpdate -u works just fine when ntpd is running