Re: volume create failed

Joe Julian <joe@xxxxxxxxxxxxxxxx> · Thu, 26 Dec 2013 17:55:05 -0800



    On 12/26/2013 02:24 PM, William Kwan
      wrote:

    
      Hi all,

        
        Running 3.4.1 on Centos6.

        
        I have this issue, I created two xfs filesystem on each of two
        hosts

        onode1:/data/glusterfs/kvm1/brick1

        onode2:/data/glusterfs/kvm1/brick2
        

        onode1:/data/glusterfs/kvm2/brick1
        onode1:/data/glusterfs/kvm2/brick2
        

        The first volume was created successfully
        # gluster volume create kvm1 replica 2 transport tcp
          onode1:/data/glusterfs/kvm1/brick1
          onode2:/data/glusterfs/kvm1/brick2
        

        When I attempt to create the second volume, I got 
        # gluster volume create kvm2 replica 2 transport tcp
          onode1:/data/glusterfs/kvm2/brick1
          onode2:/data/glusterfs/kvm2/brick2

          volume create: kvm2: failed: /data/glusterfs/kvm2/brick1 or a
          prefix of it is already part of a volume
        

        I'm not sure I follow what the error means.  The 2nd
          set of filesystems have to mount under a totally different
          directory structure?
        

    It means the path to the brick, or some preceding directory up the
    tree, is marked as being part of a volume, or was part of a volume
    in the past.

    
    From your two commands, you're trying to use the same path twice. In
    volume kvm1 you use the same two bricks as kvm2. Two volumes cannot
    use the same bricks. Is there a reason you want two volumes? A more
    typical use case would be:

    
    gluster volume create kvms replica 2
    onode1:/data/glusterfs/kvm1/brick1
    onode2:/data/glusterfs/kvm1/brick1
    onode1:/data/glusterfs/kvm1/brick2
    onode2:/data/glusterfs/kvm1/brick2

    
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