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

[Junxiao Bi]

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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>> 
> 
>