On 4/24/16 11:49 AM, Stephen Frost wrote: > * Magnus Hagander (mag...@hagander.net) wrote: >> On Sun, Apr 24, 2016 at 5:37 AM, Bruce Momjian <br...@momjian.us> wrote: >> >>> On Fri, Apr 22, 2016 at 11:53:46AM -0400, Robert Haas wrote: >>> >>>> Frankly, I think that's right. It is one thing to say that the new >>>> method is preferred - +1 for that. But the old method is going to >>>> continue to be used by many people for a long time, and in some cases >>>> will be superior. That's not something we can deprecate, unless I'm >>>> misunderstanding the situation. >>> >>> I agree with Robert. One the one hand we are saying pg_stop_backup() >>> doesn't work well in psql because you get those two file contents output >>> that you have to write, and on the other hand we are saying we are going >>> to deprecate the method that does work well in psql? I must be missing >>> something too, as that makes no sense. >> >> I don't agree. I don't see how "making a backup using psql" is more >> important than "making a backup without potentially dangerous sideeffects". >> But if others don't agree, could one of you at least provide an example of >> how you'd like the docs to read in a way that doesn't deprecate the unsafe >> way but still informs the user properly? > > I'm with Magnus on this, primairly because I've come to understand just > how dangerous the old backup method is. That method *should* be > deprecated and discouraged. A backup method which means your database > doesn't restart properly if the system crashes during the backup is > *bad*.
+1 > Perhaps we can look at improving psql to make it easier to use it for > the new backup method but, honestly, all these hackish scripts to do > backups aren't doing a lot of things that a real backup solution needs > to do. Improving psql for this is a bit like new paint on the titanic. Personally I think we do the users a disservice by implying that backup is as simple as calling two functions and copying the files. Oh, and don't forget to include WAL! -- -David da...@pgmasters.net
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