> archive_command = 'test ! -f /usr/local/wal_archive_local/%f && cp %p > /usr/local/wal_archive_local/%f' The archive command tests if the wal segment exists and is a file, but it does not check if the file is still being written. You need to copy the file after writing has finished (it reached 16777216 bytes). I don't have sources of pg_standby near me, but I remember in the C code checks for complete segment sizes. thanks Ioannis Tambouras
