Hi, On 2018-04-09 13:25:54 -0700, Mark Dilger wrote: > I was reading this thread up until now as meaning that the standby could > receive corrupt WAL data and become corrupted.
I don't see that as a real problem here. For one the problematic scenarios shouldn't readily apply, for another WAL is checksummed. There's the problem that a new basebackup would potentially become corrupted however. And similarly pg_rewind. Note that I'm not saying that we and/or linux shouldn't change anything. Just that the apocalypse isn't here. > Your comment reads as if this is a problem isolated to whichever server has > the problem, and will not get propagated to other servers. Am I reading > that right? I think that's basically right. There's cases where corruption could get propagated, but they're not straightforward. Greetings, Andres Freund