diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgml index 1c9b5cfb4b..4c00ca07e1 100644 --- a/doc/src/sgml/backup.sgml +++ b/doc/src/sgml/backup.sgml @@ -1,4 +1,4 @@ - + Backup and Restore @@ -1337,6 +1337,23 @@ tar -rf /var/lib/pgsql/backup.tar /var/lib/pgsql/archive/ WAL files are part of the same tar file. Please remember to add error handling to your backup scripts. + + + If archive storage size is a concern, use pg_compresslog, + , to + remove unnecessary and trailing + space from the WAL files. You can then use + gzip to further compress the output of + pg_compresslog: + +archive_command = 'pg_compresslog %p - | gzip > /var/lib/pgsql/archive/%f' + + You will then need to use gunzip and + pg_decompresslog during recovery: + +restore_command = 'gunzip < /mnt/server/archivedir/%f | pg_decompresslog - %p' + +