Hi, On 2021-05-10 19:27:55 -0700, Andres Freund wrote: > I've a couple times gotten into a situation where I was shutting down > the primary while the standby was behind, and the system appeared to > just lock up, with neither primary nor standby reacting to normal > shutdown attempts. This seems to happen more often with larger wal > segment size...
Ah - to reproduce it, you can put a pg_usleep(10000) or so above the pg_pwrite() in XLogWalRcvMain(). That triggers it fairly reliably for me. Greetings, Andres Freund