[Ocfs2-devel] ocfs2: o2hb: not fence self if storage down

[Junxiao Bi]

On 01/21/2016 08:46 AM, Joseph Qi wrote:
> Hi Junxiao,
> So you mean the negotiation you added only happens if all nodes storage
> link down?
Negotiation happened when one node found its storage link down, but
success when all nodes storage link down, or it will keep the same
behavior like before.

Thanks,
Junxiao.
> 
> Thanks,
> Joseph
> 
> On 2016/1/20 21:27, Junxiao Bi wrote:
>> Hi Joseph,
>>
>>> 在 2016年1月20日，下午5:18，Joseph Qi <joseph.qi at huawei.com> 写道：
>>>
>>> Hi Junxiao,
>>> Thanks for the patch set.
>>> In case only one node storage link down, if this node doesn't fence
>>> self, other nodes will still check and mark this node dead, which will
>>> cause cluster membership inconsistency.
>>> In your patch set, I cannot see any logic to handle this. Am I missing
>>> something?
>> No, there is no logic for this. But why didn’t node fence self when storage down? What make a softirq timer can’t be run, another bug?
>>
>> Thanks,
>> Junxiao.
>>>
>>> On 2016/1/20 11:13, Junxiao Bi wrote:
>>>> Hi,
>>>>
>>>> This serial of patches is to fix the issue that when storage down,
>>>> all nodes will fence self due to write timeout.
>>>> With this patch set, all nodes will keep going until storage back
>>>> online, except if the following issue happens, then all nodes will
>>>> do as before to fence self.
>>>> 1. io error got
>>>> 2. network between nodes down
>>>> 3. nodes panic
>>>>
>>>> Junxiao Bi (6):
>>>>      ocfs2: o2hb: add negotiate timer
>>>>      ocfs2: o2hb: add NEGO_TIMEOUT message
>>>>      ocfs2: o2hb: add NEGOTIATE_APPROVE message
>>>>      ocfs2: o2hb: add some user/debug log
>>>>      ocfs2: o2hb: don't negotiate if last hb fail
>>>>      ocfs2: o2hb: fix hb hung time
>>>>
>>>> fs/ocfs2/cluster/heartbeat.c |  181 ++++++++++++++++++++++++++++++++++++++++--
>>>> 1 file changed, 175 insertions(+), 6 deletions(-)
>>>>
>>>> Thanks,
>>>> Junxiao.
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>
>>>
>>
>>
>> .
>>
> 
>