Re: Re: Bond, round robin mis-config​uration.

[Eduard Sinelnikov]

Hi Bill,

I guess you are right, but what happens if I DO want to stay in
active/backup for a while and switch to round robin later?
Is it a bug?

Thanks,
       Eduard.



2011/8/1 bill <bill_carson at 126.com>:
> Hi, Eduard
>
> Please put the cables back after change the mode to round robin,
> and then ping the remote PC
>
> The scenario is:
> 1 Create a bond with 3 interfaces (connect them to switch).
> 2 Change bond's mode to active/backup.
> 3 Physicly remove two cables form interfaces ( not the active interface ).
> 4 Change the mode to round robin.
> 5 Put the cables back
> 6 Try to ping some other computer.
>
>
> bill
>
>
>
> At 2011-07-31 23:15:22,"Eduard Sinelnikov" <eduard.sinelnikov at gmail.com> wrote:
>>Hi,
>>
>>The scenario is:
>>* Create a bond with 3 interfaces (connect them to switch).
>>* Change bond's mode to active/backup.
>>* Physicly remove two cables form interfaces ( not the active interface ).
>>* Put the cables back
>>* Change the mode to round robin.
>>* Try to ping some other computer.
>>
>>Now only one interface is pinging to remote computer.
>>Without removing the cables all three interface will ping to remote
>>computer periodicly.
>>
>>
>>I did some debuging,in the code, and I see that in round robin all the
>>interface is in active (and all of them transmiting periodically).
>>After removing and puting back the cables(in active/backup mode). the
>>interfaces change their status to backup.
>>After this only one interface is transmiting ( the one which was the active).
>>
>>Thanks in advance,
>>           Eduard
>>
>>2011/7/31 Peter Senna Tschudin <peter.senna at gmail.com>:
>>> Hi Eduard,
>>>
>>> On Sun, Jul 31, 2011 at 4:59 AM, Eduard Sinelnikov
>>> <eduard.sinelnikov at gmail.com> wrote:
>>>> Hi,
>>>>
>>>> In the kernel 2.6.39.3 ( /drivers/net/bond/bond_main.c).
>>>
>>> I followed the code you mentioned. The file is actually at:
>>>
>>> ./drivers/net/bonding/bond_main.c
>>>
>>>> In the function  ‘bond_xmit_roundrobin’
>>>> The code check if the bond is active via
>>>> ‘bond_is_active_slave(slave)’ Function call.
>>>> Which actually checks if the slave is backup or active
>>>> What is the meaning of slave being  backup in round robin mode?
>>>> Correct me if I wrong but in round robin every slave should send a
>>>> packet, regardless of being active or backup.
>>>
>>> I'm not sure about this but my best guess is that even using all
>>> slaves to send packages, the slaves must be used one at a time, to
>>> send packages sequentially. And one slave can be deactivated when a
>>> problem is detected. I think that this two scenarios that justify the
>>> check.
>>>
>>>>
>>>> Thank you,
>>>>            Eduard
>>>>
>>>> _______________________________________________
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>>>>
>>>
>>> Peter
>>>
>>> --
>>> Peter Senna Tschudin
>>> peter.senna at gmail.com
>>> gpg id: 48274C36
>>>
>>
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>
>