Hi, I'd like to propose to add pg_file_sync() function into contrib/adminpack. This function fsyncs the specified file or directory named by its argument. IMO this is useful, for example, when you want to fsync the file that pg_file_write() writes out or that COPY TO exports the data into, for durability. Thought?
Regards, -- Fujii Masao
pg_file_sync_v1.patch
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