Package: postgresql-10-pg-checksums Source: pg-checksums Version: 1.1-6.pgdg22.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 75 Depends: libc6 (>= 2.34), postgresql-10 Recommends: pg-checksums-doc Homepage: https://github.com/credativ/pg_checksums Priority: optional Section: database Filename: pool/main/p/pg-checksums/postgresql-10-pg-checksums_1.1-6.pgdg22.04+1_amd64.deb Size: 30604 SHA256: 60fe171df19aedfba46ff2f76bd696267059c16da37d185e1c9f11f1120fe78c SHA1: fc24630560c6df0fbd367dffd6a011054ccceb88 MD5sum: 7a7189091d844333c5c92bc3717c10ec 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.