[Gluster-users] Problem with self-heal

Ravishankar N ravishankar at redhat.com
Wed Jul 2 15:38:17 UTC 2014

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.
Hi Milos,
If you are able to reproduce this issue, could you please file a bug 
[1]  and attach the gluster logs from both machines to the bug report?


Thanks ,
> 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.
> Milos
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