The PostgreSQL Machine
PostgreSQL is a portable RDBMS targeting POSIX systems (and Windows). It also makes some assumptions about the operating system and hardware it's running on that are not covered by POSIX, but hold on all typical systems. For example: we assume that 32 bit aligned integers can be read and written atomically; that is, without any kind of synchronisation, you might read an arbitrarily stale value b
Fsync Errors - PostgreSQL wiki
This article covers the current status, history, and OS and OS version differences relating to the circa 2018 fsync() reliability issues discussed on the PostgreSQL mailing list and elsewhere. It has sometimes been referred to as "fsyncgate 2018". Current status As of this PostgreSQL 12 commit, PostgreSQL will now PANIC on fsync() failure. It was backpatched to PostgreSQL 11, 10, 9.6, 9.5 and 9.4.
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