[ClusterLabs] Antw: Re: Pacemaker log showing time mismatch after

[Ulrich Windl]

>>> Jan Pokorný <jpokorny at redhat.com> schrieb am 01.02.2019 um 08:10 in
Nachricht
<20190201071011.GB7945 at redhat.com>:
> On 28/01/19 09:47 ‑0600, Ken Gaillot wrote:
>> On Mon, 2019‑01‑28 at 18:04 +0530, Dileep V Nair wrote:
>> Pacemaker can handle the clock jumping forward, but not backward.
> 
> I am rather surprised, are we not using monotonic time only, then?
> If so, why?

AFAIK, monotonic time is monotonic, but only for the current boot. So you
cannot compare such monotonic timestamps across boots or across nodes.

> 
> We shall not need any explicit time synchronization across the nodes
> since we are already backed by extended virtual synchrony from
> corosync, eventhough it could introduce strangenesses when
> time‑based rules kick in.
> 
> ‑‑ 
> Nazdar,
> Jan (Poki)