Package: postgresql-11-pg-checksums Source: pg-checksums Version: 1.2-2.pgdg22.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 71 Depends: libc6 (>= 2.34), postgresql-11 Recommends: pg-checksums-doc Homepage: https://github.com/credativ/pg_checksums Priority: optional Section: database Filename: pool/main/p/pg-checksums/postgresql-11-pg-checksums_1.2-2.pgdg22.04+1_amd64.deb Size: 30384 SHA256: 8fd538be14e71ed3ef4b53228876e95cdecfe4c2d4235c8672d77ce00f0ebfe3 SHA1: bceb8f3b8078c33337e9f1820252f7a8ee7bbe2e MD5sum: 4a7054f03bf7a3f8fbca1cf66d05ede4 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.