Re: [CentOS-virt] Time

On 01/02/2013 02:06 PM, Nico Kadel-Garcia wrote:

On Wed, Jan 2, 2013 at 3:53 AM, Robert Dinsenanook@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