Package: postgresql-16-pg-checksums Source: pg-checksums Version: 1.1-6.pgdg22.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 99 Depends: libc6 (>= 2.34), postgresql-16 Recommends: pg-checksums-doc Homepage: https://github.com/credativ/pg_checksums Priority: optional Section: database Filename: pool/main/p/pg-checksums/postgresql-16-pg-checksums_1.1-6.pgdg22.04+1_amd64.deb Size: 36824 SHA256: dceef1df2b49b07be68e057fcb5e22924941a567c9e3d7644e3ffc5060bb4008 SHA1: 2a198c7e67e37c39b0aaf25a2af94a4646e8aeef MD5sum: b1107917c442060be89d081695311f70 Description: Activate/deactivate/verify PostgreSQL data checksums Data checksums allow the PostgreSQL database server to identify I/O failures when reading data from storage. The checksums stored in the page header of each data page are compared to the computed checksum of the read data. . Data checksums need to be activated at instance creation time, all current versions of PostgreSQL including v11 do not allow activating (or deactivating) checksums afterwards. . pg_checksums_ext can activate or deactivate data checksums as long at the database cluster is shutdown cleanly. Activating checksums requires all database blocks to be read and all page headers to be updated, so can take a long time on a large database. Deactivating checksums only requires the cluster control file to be updated so is quick. . In addition, pg_checksums_ext can verify the checksums in an online cluster.