Re: Peer isolation while healing

ML <lists@xxxxxxxxxxxxxxx> · Mon, 9 Oct 2017 15:29:41 +0200



    That make sense ^_^ 

    
    Unfortunately I haven't kept the interresting data you need. 

    
    Basically I had some write errors on my gluster clients when my
      monitoring tool tested mkdir & create files.

    
    The server's load was huge during the healing (cpu at 100%), and
      the disk latency increased a lot. 

      That may be the source of my write errors, we'll know for sure
      next time... I'll keep & post all the data you asked.
    No way on the client side to force the gluster mount on 1 peer ?

    
    Thanks for your help Karthik!
    Quentin

    
    Le 09/10/2017 à 12:10, Karthik
      Subrahmanya a écrit :

    
                  Hi,

                    
                  There is no way to isolate the healing peer. Healing
                  happens from the good brick to the bad brick.

                
                I guess your replica bricks are on a different peers. If
                you try to isolate the healing peer, it will stop the
                healing process itself.

                
              What is the error you are getting while writing? It would
              be helpful to debug the issue, if you can provide us the
              output of the following commands:

            
                gluster volume info <vol_name>

          
              gluster volume heal <vol_name> info

        
        And also provide the client & heal logs.

        
            Thanks & Regards,

            
            Karthik

            
        On Mon, Oct 9, 2017 at 3:02 PM, ML <lists@xxxxxxxxxxxxxxx>
          wrote:

          Hi
            everyone,

            
            I've been using gluster for a few month now, on a simple 2
            peers replicated infrastructure, 22Tb each.

            
            One of the peers has been offline last week during 10 hours
            (raid resync after a disk crash), and while my gluster
            server was healing bricks, I could see some write errors on
            my gluster clients.

            
            I couldn't find a way to isolate my healing peer, in the
            documentation or anywhere else.

            
            Is there a way to avoid that ? Detach the peer while healing
            ? Some tunning on the client side maybe ?

            
            I'm using gluster 3.9 on debian 8.

            
            Thank you for your help.

            
            Quentin

            
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