[ClusterLabs] Antw: Re: Antw: Re: Antw: Re: Antw: pacemaker doesn't correctly handle a resource after time/date change

Andrew Beekhof andrew at beekhof.net
Sun Aug 30 21:59:13 EDT 2015 

> On 29 Aug 2015, at 1:42 am, Digimer <lists at alteeve.ca> wrote:
> 
> This is what we do.
> 
> That said, I do agree with Kostiantyn though. Yes, clocks shouldn't
> drift, but it happens. If there is a known, reproduceable problem than
> negatively effects the cluster, it should be fixed.
> 
> Now, if this problem turns out to be complex and time consuming to fix,
> I do see an argument for it being filed as "low priority", but it should
> be in the "To Fix" queue.

Any idea how long that list is?

> 
> digimer
> 
> On 28/08/15 05:31 AM, Vladislav Bogdanov wrote:
>> 28.08.2015 12:25, Kostiantyn Ponomarenko wrote:
>>> In my case the final solution will be shipped to different counties
>>> which means different time zones.
>> 
>> Why not to keep all HW clocks in UTC?
>> 
>>> And the replacement of one of the nodes in the working solution could
>>> happens.
>>> So the possibilities of the issue to happen is still there.
>>> 
>>> Thank you,
>>> Kostya
>>> 
>>> On Fri, Aug 28, 2015 at 10:02 AM, Andrew Beekhof <andrew at beekhof.net
>>> <mailto:andrew at beekhof.net>> wrote:
>>> 
>>> 
>>>> On 21 Aug 2015, at 11:06 pm, Kostiantyn Ponomarenko
>>> <konstantin.ponomarenko at gmail.com
>>>    <mailto:konstantin.ponomarenko at gmail.com>> wrote:
>>>> 
>>>> As I wrote in the previous email, it could happen when NTP
>>> servers are unreachable before Pacemaker's start, and then, after some
>>> time, NTP becomes reachable again.
>>>> So it is possible that time will be synchronized in any
>>> direction: 15 min or 23 min or 1 hour or 12 hours backward/forward.
>>> 
>>>    If your clock is drifting by hours during a reboot cycle, then I
>>>    would suggest you have a hardware issue that needs attending to.
>>> 
>>>> And in that case the bug will appear itself.
>>>> 
>>>> Thank you,
>>>> Kostya
>>>> 
>>>> On Mon, Aug 17, 2015 at 3:01 AM, Andrew Beekhof
>>>    <andrew at beekhof.net <mailto:andrew at beekhof.net>> wrote:
>>>> 
>>>>> On 8 Aug 2015, at 12:43 am, Kostiantyn Ponomarenko
>>>    <konstantin.ponomarenko at gmail.com
>>>    <mailto:konstantin.ponomarenko at gmail.com>> wrote:
>>>>> 
>>>>> Hi Andrew,
>>>>> 
>>>>> So the issue is:
>>>>> 
>>>>> Having one node up and running, set time on the node backward
>>>    to, say, 15 min (generally more than 10 min), then do "stop" for a
>>>    resource.
>>>>> That leads to the next - the cluster fails the resource once,
>>>    then shows it as "started", but the resource actually remains
>>> "stopped".
>>>>> 
>>>>> Do you need more input from me on the issue?
>>>> 
>>>> I think “why” :)
>>>> 
>>>> I’m struggling to imagine why this would need to happen.
>>>> 
>>>>> 
>>>>> Thank you,
>>>>> Kostya
>>>>> 
>>>>> On Wed, Aug 5, 2015 at 3:01 AM, Andrew Beekhof
>>>    <andrew at beekhof.net <mailto:andrew at beekhof.net>> wrote:
>>>>> 
>>>>>> On 4 Aug 2015, at 7:31 pm, Kostiantyn Ponomarenko
>>>    <konstantin.ponomarenko at gmail.com
>>>    <mailto:konstantin.ponomarenko at gmail.com>> wrote:
>>>>>> 
>>>>>> 
>>>>>> On Tue, Aug 4, 2015 at 3:57 AM, Andrew Beekhof
>>>    <andrew at beekhof.net <mailto:andrew at beekhof.net>> wrote:
>>>>>> Github might be another.
>>>>>> 
>>>>>> I am not able to open an issue/bug here
>>>    https://github.com/ClusterLabs/pacemaker
>>>>> 
>>>>> Oh, for pacemaker bugs see http://clusterlabs.org/help.html
>>>>> Can someone clearly state what the issue is?  The thread was
>>>    quite fractured and hard to follow.
>>>>> 
>>>>>> 
>>>>>> Thank you,
>>>>>> Kostya
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> 
> -- 
> Digimer
> Papers and Projects: https://alteeve.ca/w/
> What if the cure for cancer is trapped in the mind of a person without
> access to education?
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