could not read block 0 in file Error

Sbob <sbob@xxxxxxxxxxxxxxxxxxxxx> · Fri, 22 Apr 2022 14:23:00 -0600



    Hi all;
    

    We had an issue with a PostgreSQL v12 cluster. Not sure all of
      the history as I was pulled in late, however we were seeing that
      the db would not start due to WAL inconsistencies, was throwing an
      error about could not find wal records.
    So we ran a pg_resetwal -f -D [data dir]
    

    we are dumping (via pg_dump) all the databases in the broken
      cluster and I will restore them to a new cluster,
    however in one of the databases, for one of the tables we are
      getting this:
    

    pg_dump:
          error: Dumping the contents of table "bigtable" failed:
          PQgetResult() fai
        

        led.
        

        pg_dump: error: Error message from server: ERROR:  could not
        read block 0 in file "base/6328739/6340053": read only 0 of 8192
        bytes
        

        pg_dump: error: The command was: COPY public.bigtable (recordid,
        containerid, record_type, description, overlaygroup) TO stdout;

        
    Is there any way to recover?
    

    Thanks in advance