[Gluster-users] Problem with self-heal

Milos Kozak milos.kozak at lejmr.com
Wed Jul 2 12:45:11 UTC 2014


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 

>> 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.


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