pg_walsummary
displays WAL summary file contents
TLDR
Show WAL summary
$ pg_walsummary [summary_file]
Show with individual block detail$ pg_walsummary -i [summary_file]
Validate a WAL summary file without printing contents$ pg_walsummary -q [summary_file]
SYNOPSIS
pg_walsummary [options] [file...]
DESCRIPTION
pg_walsummary prints the contents of WAL summary files. These binary files are found in the pg_wal/summaries subdirectory of the data directory and track which blocks were modified, supporting the incremental backup feature introduced in PostgreSQL 17.
PARAMETERS
-i, --individual
Print a separate line for every modified block instead of consolidating consecutive blocks into ranges.-q, --quiet
Do not print any output, except for errors. Useful for validating that a file can be parsed.-V, --version
Display version information, then exit.
INSTALL
sudo dnf install postgresql17
sudo apk add postgresql17
sudo zypper install postgresql17
SEE ALSO
pg_waldump(1), pg_combinebackup(1), pg_basebackup(1)
