Re: Missing files on one of the bricks

Ravishankar N <ravishankar@xxxxxxxxxx> · Thu, 16 Nov 2017 17:44:34 +0530



    On 11/16/2017 04:12 PM, Nithya
      Balachandran wrote:

    
          On 15 November 2017 at 19:57,
            Frederic Harmignies <frederic.harmignies@xxxxxxxxxxxxx>
            wrote:

            
              Hello, we have 2x files that are missing
                from one of the bricks. No idea how to fix this.
                

                Details:
                

                  # gluster volume info
                   
                  Volume Name: data01
                  Type: Replicate
                  Volume ID: 39b4479c-31f0-4696-9435-5454e4f8d310
                  Status: Started
                  Snapshot Count: 0
                  Number of Bricks: 1 x 2 = 2
                  Transport-type: tcp
                  Bricks:
                  Brick1: 192.168.186.11:/mnt/AIDATA/data
                  Brick2: 192.168.186.12:/mnt/AIDATA/data
                  Options Reconfigured:
                  performance.cache-refresh-timeout: 30
                  client.event-threads: 16
                  server.event-threads: 32
                  performance.readdir-ahead: off
                  performance.io-thread-count: 32
                  performance.cache-size: 32GB
                  transport.address-family: inet
                  nfs.disable: on
                  features.trash: off
                  features.trash-max-filesize: 500MB
                
                
                  # gluster volume heal data01 info
                  Brick 192.168.186.11:/mnt/AIDATA/data
                  Status: Connected
                  Number of entries: 0
                  

                  Brick 192.168.186.12:/mnt/AIDATA/data
                  <gfid:7e8513f4-d4e2-4e66-b0ba-2dbe4c803c54> 
                  <gfid:9612ecd2-106d-42f2-95eb-fef495c1d8ab> 
                  Status: Connected
                  Number of entries: 2
                  

                  # gluster volume heal data01 info split-brain
                  Brick 192.168.186.11:/mnt/AIDATA/data
                  Status: Connected
                  Number of entries in split-brain: 0
                  

                  Brick 192.168.186.12:/mnt/AIDATA/data
                  Status: Connected
                  Number of entries in split-brain: 0
                
                
                Both files is missing from the folder on Brick1,
                  the gfid files are also missing in the .gluster folder
                  on that same Brick1.
                Brick2 has both the files and the gfid file in
                  .gluster
                

                We already tried:
                

                 #gluster heal volume full
                Running a stat and ls -l on both files from a
                  mounted client to try and trigger a heal
                

                Would a re-balance fix this? Any guidance would be
                  greatly appreciated!
              
            
            A rebalance would not help here as this is a replicate
              volume. Ravi, any idea what could be going wrong here? 

            
    No, explicit lookup should have healed the file on the missing
    brick. Unless lookup did not hit afr and is served from caching
    translators.

    Frederic, what version of gluster are you running? Can you launch
    'gluster heal volume' and see glustershd logs for possible warnings?
    Use DEBUG client-log-level if you have to.  Also, instead of stat,
    try a getfattr on the file from the mount.

    
    -Ravi

    
            Regards,
            Nithya
            
              
                Thank you in advance!
                
                    
                      -- 

                        
                            Frederic
                                Harmignies
                              High
                                  Performance Computer Administrator
                              

                              www.elementai.com
                            
                          
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