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

Digimer lists at alteeve.ca
Sun Aug 30 22:16:29 EDT 2015


On 30/08/15 09:59 PM, Andrew Beekhof wrote:
> 
>> 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?

More than 2 meters printed in 8pt font? ;)

>> 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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-- 
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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