Re: delete brick / format / add empty brick

Alun James <ajames@xxxxxxxxx> · Wed, 08 Jan 2014 12:27:57 -0000 (GMT)

I have this a go.
gluster volume add-brick myvol replica 2 server2:/brick1 
gluster volume heal myvol full

It seems to be syncing the files but very slowly. Also the server load on server01 has risen to 200+ and the gluster clients are no longer able to access the mounts. Is there a way to do this that is not as impactful? Could I manually rsync the bricks before adding the second node back in?

Cheers,

Alun.

From: "Ravishankar N" <ravishankar@xxxxxxxxxx>
To: "Alun James" <ajames@xxxxxxxxx>
Cc: gluster-users@xxxxxxxxxxx
Sent: Wednesday, 8 January, 2014 4:00:44 AM
Subject: Re:  delete brick / format / add empty brick

    On 01/07/2014 09:40 PM, Alun James
      wrote:

      Hi folks,

        I had a 2 node (1 brick each)
            replica, some network meltdown issues seemed to cause
            problems with second node (server02). glusterfsd
            process reaching 200-300% and errors relating to split brain
            possibilities and self heal errors.

        Original volume info:

        Volume Name: myvol

            Type: Replicate
            Status: Started
            Number of Bricks: 2
            Transport-type: tcp
            Bricks:
            Brick1: server01:/brick1
            Brick2: server02:/brick1

        I
            removed the second brick (that was showing server problems).

        gluster volume remove-brick
              myvol replica 1 server02:/brick1

        Now the volume status is:

            Volume Name: tsfsvol0
            Type: Distribute
            Status: Started
            Number of Bricks: 1
            Transport-type: tcp
            Bricks:
            Brick1: server01:/brick1

            All is fine and the data on working server is sound.

            The xfs partition for server02:/brick1 has been
              formatted and therefore the data gone. All other gluster
              config data has remained untouched. Can I re-add the
              second server to the volume with an empty brick and the
              data will auto replicate over from the working server?

            gluster volume add-brick myvol replica 2
                server2:/brick1 ??

    Yes this should work fine. You
        will need to run a  `gluster volume heal myvol full` to manually
        trigger the replication.

          ALUN JAMES

              Senior Systems Engineer

              Tibus

              T: +44 (0)28 9033 1122

              E: ajames@xxxxxxxxx

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