On Tue, Apr 7, 2020 at 5:51 AM Peter Eisentraut <peter.eisentr...@2ndquadrant.com> wrote: > On 2020-04-03 21:07, Robert Haas wrote: > > A new tool called pg_validatebackup can validate a backup against the > > manifest. > > In software engineering, "verify" and "validate" have standardized > distinct meanings. I'm not going to try to explain them here, but you > can easily find them online. I haven't formed an opinion on which one > of them this tool is doing, but I notice that both the man page and the > messages produced by the tool use the two terms seemingly > interchangeably. We should try to pick the correct term and use it > consistently.
The tool is trying to make sure that we have the same backup that we're supposed to have, and that the associated WAL is present and sane. Looking at https://en.wikipedia.org/wiki/Verification_and_validation, that sounds more like verification than validation, but I confess that this distinction is new to me. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
