Package: postgresql-10-pg-checksums Source: pg-checksums Version: 1.1-7.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_1.1-7.pgdg22.04+1_amd64.deb Size: 30764 SHA256: a994804497c8b4c96c35c0b592c9745e8c8a55c9dc65e15a931fc20636b3a5c4 SHA1: 3f6bab1cd909d9b1867100bf465f3f5b96f156e0 MD5sum: 4f9dd949226b458ddd3cf373a8dde2ab 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.