[Gluster-users] Problem with self-heal

Ravishankar N ravishankar at redhat.com
Wed Jul 2 05:38:32 UTC 2014

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?
> .. 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 ?
> 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?
> Thanks Milos
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