On Fri, Jun 11, 2021 at 03:32:28PM +0900, Kyotaro Horiguchi wrote: > At Fri, 11 Jun 2021 10:48:32 +0800, Julien Rouhaud <rjuju...@gmail.com> wrote > in >> "far from perfect" is a strong understatement for "appears to work but will >> randomly and silently breaks everything without a simple way to detect it".
Yeah. Users like unplugging their hosts, because that's *fast* and easy to do. > I think it's overstating. It sounds like a story of a mission critical > world. How perfect archive_command should be depends on the > requirements of every system. Simple cp is actually sufficient in > certain log? range of usages, maybe. > >> We should document a minimum workable setup, but cp isn't an example of that, >> and I don't think that there will be a simple example unless we provide a >> dedicated utility. > > I think cp can be an example as far as we explain the limitations. (On > the other hand "test !-f" cannot since it actually prevents server > from working correctly.) Disagreed. I think that we should not try to change this area until we can document a reliable solution, and a simple "cp" is not that. Hmm. A simple command that could be used as reference is for example "dd" that flushes the file by itself, or we could just revisit the discussions about having a pg_copy command, or we could document a small utility in perl that does the job. -- Michael
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