On 3/3/21 6:35 PM, Peter Eisentraut wrote: > On 22.02.21 08:00, Vik Fearing wrote: >> On 2/22/21 3:24 AM, Andres Freund wrote: >>> Imagine trying to run regular tests of HEAD, where the tests require a >>> large database to be loaded. Re-loading the data for every [few] commits >>> is prohibitively time consuming, and even just running pg_upgrade is >>> painful. So you'd like to re-use a "template" data directory with the >>> data loaded if possible (i.e. no catversion / WAL / ... version bumps), >>> and a pg_upgrade otherwise. >> >> This is exactly what I am doing. > > If what you want to know is whether a given binary can run against a > given data directory then CATALOG_VERSION_NO isn't the only thing you > need to check. The full truth of this is in ReadControlFile(). The > best way to get that answer is to start a server and see if it > complains. You can even grep the log for "It looks like you need to > initdb.".
In that case, what would everyone think about a `pg_ctl check` option? -- Vik Fearing
