[Gluster-users] Issues removing then adding a brick to a replica volume (Gluster 3.7.6)

[Sahina Bose]

On 01/18/2016 07:38 PM, Lindsay Mathieson wrote:
> On 18/01/2016 10:24 PM, Krutika Dhananjay wrote:
>> Heal _is_ necessary when you add a brick that changes the replica 
>> count from n to (n+1). Now the new brick that is also part of the 
>> existing replica set is lagging with respect to the existing bricks
>> and needs to be brought in sync with these. All files and directories 
>> in vna and/or vnb will be healed to vng in your case.
>
> Yes I realise that :)
>
> I was under the impression that heal info lists the files that are the 
> src of the heal, e.g all the files on vna & vnb.
>
> vng which is blank would only be receiving files.
>
>> Yes, there is a bug report for this @ 
>> https://bugzilla.redhat.com/show_bug.cgi?id=1112158.
>> The workaround, like you yourself figured, is to run the command on 
>> the node with the highest uuid.
>> Steps:
>> 1) Collect output of `cat /var/lib/glusterd/glusterd.info | grep 
>> UUID` from each of the nodes, perhaps into a file named 'uuid.txt'.
>> 2) cat uuid.txt | sort
>> 3) Pick the last gfid.
>> 4) find out which of the glusterd.info files has the same uuid as 
>> this selected uuid.
>> 5) Run 'heal info full' on that same node.
>>
>
> Will do.
>
> And I still have the problem with the files becoming unreadable when 
> adding a brick.

Late jumping into this thread, but curious -

Is there a specific reason that you are removing and adding a brick? 
Will replace-brick not work for you?


>
> Thanks,
>
>
> -- 
> Lindsay Mathieson
>
>
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