On 21-Feb-14 5:50 PM, Tony Hart wrote:
> Hi Praveen,
> Thanks for the information, I assume by ‘reboot’ you mean restart the process?
'reboot' was meant to the removal and insertion of the card. This will 
generate to node level events.


Thanks
Praveen
>
> thanks
> —
> tony
>
> On Feb 20, 2014, at 6:30 AM, praveen malviya <[email protected]> 
> wrote:
>
>> On 20-Feb-14 1:57 AM, Tony Hart wrote:
>>> Hi Praveen,
>>>
>>> Thanks for the explanation.  Maybe I can re-phrase the question in terms of 
>>> processes rather than SAF entities.  I want to have processes A,B and E run 
>>> on card1 and C,D on card2 with the same failover/revert behavior I 
>>> described below.  How might I sent up the mapping of processes (each 
>>> process performs a distinct function) to SG’s, SU’s etc to achieve that?
>> With current OpenSAF implementation, one can solution can be imagined.
>>   1)All processes will be  modeled as a  separate 2N application.
>>   2)saAmfSURank can be configured to set initial distribution of
>> assignments amond the SUs in the same application.
>>   3)Component representing the process (sayA) will perform PG tracking
>> and will be aware of node leaving and joining the cluster.
>>   4) As soon as a active component gets PG tracking callback for other
>> component got the standby role because of  node, hosting that
>> component(actually SU), reboot.
>>       it will perform si-swap for its SI to swap the role.
>> 5) CLM can be used to monitor node related events.
>>
>>
>> Thanks
>> PRaveen
>>
>>> thanks,
>>> —
>>> tony
>>>
>>> On Feb 19, 2014, at 1:58 AM, praveen malviya <[email protected]> 
>>> wrote:
>>>
>>>> In 2N model only one SU (say SU1) will be active for all SIs and another
>>>> SU(say SU2) will be standby for all SIs.
>>>> So even if 5 SUs are present, one SU1 will be active and another SU2
>>>> will standby on behalf of all the SIs in the system.
>>>> Other SUs are referred as spare SUs.
>>>>
>>>> Let us suppose SU1 hosted on card1 is active for SI1, SI2,SI3 ....
>>>> and SU2 hosted on card2 is standby for SI1,SI2, SI3....
>>>> If card1 reboots, then standby SU2 will become active on behalf of all
>>>> the SI1,SI2,SI3 ....
>>>> and others pare SU3 will become new standby.
>>>> Now if card1 again comes up SU1 will not be given any role on behalf of
>>>> all the SIs because SU2 is active and SU3 is standby for all 
>>>> SI1,Si2,SI3....
>>>>
>>>>
>>>> Thanks
>>>> Praveen
>>>> On 18-Feb-14 6:25 PM, Tony Hart wrote:
>>>>> 2N  (saAmfSgtRedundancyModel=1)
>>>>>
>>>>> On Feb 18, 2014, at 7:17 AM, praveen malviya <[email protected]> 
>>>>> wrote:
>>>>>
>>>>>> On 17-Feb-14 6:27 PM, Tony Hart wrote:
>>>>>>> Suppose I have two (identical) server cards in a system and I have 5 
>>>>>>> SUs (A,B,C,D,E) that each have an active and standby instance.  By 
>>>>>>> default all the active instances run on card 1 and all standby on card 
>>>>>>> 2.
>>>>>> Please tell which redundancy model is being used?
>>>>>>
>>>>>> Thanks,
>>>>>> Praveen
>>>>>>> What if two of these (C and D say) are heavy CPU users when in the 
>>>>>>> active state and I’d like to have their active instances automatically 
>>>>>>> assigned to the other card from A,B and E.  So card1 hosts active 
>>>>>>> instances for A,B and E and card2 hosts active instances for C and D 
>>>>>>> (the standby instances are oppositely assigned).
>>>>>>>
>>>>>>> Next if card2 is removed I’d like all the active instances to revert to 
>>>>>>> card1 (A,B,C,D,E).
>>>>>>>
>>>>>>> Then if card2 is re-inserted I’d like the original assignments to be 
>>>>>>> re-instanted (card1=A,B,E and card2=C,D).
>>>>>>>
>>>>>>> Similarly for card1 insert/re-insert.
>>>>>>>
>>>>>>> Is this possible with openSAF?
>>>>>>>
>>>>>>> thanks
>>>>>>> —
>>>>>>> tony
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