[Gluster-users] Problem with self-heal

[Ravishankar N]

On 07/13/2014 09:05 PM, Miloš Kozák wrote:
> Hi, I would like to ask about the progress. On the ticket there is 
> nothing new added..
>


I haven't had a chance to look at the logs/ reproduce the bug. Will get 
to it in a couple of days.
Thanks,
Ravi


> Thanks, Milos
>
>
>
> Dne 14-07-02 11:37 PM, Miloš Kozák napsal(a):
>> Submitted: 1115748
>>
>> Milos
>>
>> Dne 14-07-02 11:40 AM, Vijay Bellur napsal(a):
>>> On 07/02/2014 06:15 PM, Milos Kozak wrote:
>>>> Hi,
>>>>
>>>> I am going to replicate the problem on clean gluster configuration
>>>> latter today. So far my answers are below.
>>>>
>>>> On 7/2/2014 1:38 AM, Ravishankar N wrote:
>>>>> On 07/02/2014 02:28 AM, Miloš Kozák wrote:
>>>>>> Hi,
>>>>>> I am running some test on top of v3.5.1 in my 2 nodes configuration
>>>>>> with one disk each and replica 2 mode.
>>>>>>
>>>>>> I have two servers connected by a cable. Through this cable I let
>>>>>> glusterd communicate. I start dd to create a relatively large 
>>>>>> file. In
>>>>>> the middle of writing process I disconnect the cable, so on one 
>>>>>> server
>>>>>> (node1) I can see all data and on the other one (node2) I can see 
>>>>>> just
>>>>>> a split of the file when writing is finished
>>>>>
>>>>> Does this mean your client (mount point) is also on node 1?
>>>>
>>>> Yes I mounted volume on both servers as follows:
>>>> localhost:vg0    /mnt
>>>>
>>>>>> .. no surprise so far.
>>>>>>
>>>>>> Then I put the cable back. After a while peers are discovered,
>>>>>> self-healing daemons start to communicate, so I can see:
>>>>>>
>>>>>> gluster volume heal vg0 info
>>>>>> Brick node1:/dist1/brick/fs/
>>>>>> /node-middle - Possibly undergoing heal
>>>>>> Number of entries: 1
>>>>>>
>>>>>> Brick node2:/dist1/brick/fs/
>>>>>> /node-middle - Possibly undergoing heal
>>>>>> Number of entries: 1
>>>>>>
>>>>>> But on the network there are no data moving, which I verify by df..
>>>>>>
>>>>> When  you get "Possibly undergoing heal" and no I/O is going on 
>>>>> from the
>>>>> client, it means the self-heal daemon is healing the file. Can you 
>>>>> check
>>>>> if there are  messages in glustershd.log of node1 about self-heal
>>>>> completion ?
>>>>
>>>> There are no lines in log, that is the reason why I wrote this email
>>>> eventually.
>>>>
>>>>>> Any help? In my opinion after a while I should get my nodes
>>>>>> synchronized, but after 20minuts of waiting still nothing (the file
>>>>>> was 2G big)
>>>>> Does gluster volume status show all processes being online?
>>>>
>>>> All processes are running.
>>>>
>>>
>>> Output of strace -f -p <self-heal-daemon pid> from both nodes might 
>>> also help.
>>>
>>> Thanks,
>>> Vijay
>>>
>>
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