Re: WAL segment management on a standby

John Scalia <jayknowsunix@xxxxxxxxx> · Fri, 11 Jul 2014 13:56:16 -0400



    Thanks Matheus,

    
    What I guess I'm more than curious about is as this is one of two
    standbys and I could always rebuild it again from either of the
    other two machines, is what am I risking if delete everything except
    maybe the last handful of WAL segments? When I start the database, I
    usually only see one or maybe two references to WAL segments being
    used to sync up. And being that the standby streams anyway, I'm not
    all that concerned if another pg_basebackup has to run to rebuild
    the standby. I only want it to start cleanly in the event of a
    stoppage. Which almost never happens anyway.

    --

    Jay

    
    On 7/11/2014 12:58 PM, Matheus de
      Oliveira wrote:

    
          On Fri, Jul 11, 2014 at 1:49 PM, John
            Scalia <jayknowsunix@xxxxxxxxx>
            wrote:

            
                00000000300000000C000000A1

                00000000300000000C000000A2

                00000000300000000C000000A3

                00000000300000000C000000A3.backup

                00000000300000000C000000A4

                
                Could I safely delete the *A1, *A2, and maybe even the
                *A3 files?
            
          
        If you only care to storing files
          needed for backup made at 00000000300000000C000000A3, you can
          remove 00000000300000000C000000A1 and
          00000000300000000C000000A2, but not the others.

        
        Regards,

        
        -- 

          Matheus de Oliveira

          Analista de Banco de Dados

          Dextra Sistemas - MPS.Br nível F!

          www.dextra.com.br/postgres