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Linux FSYNC issue for Buffered IO and its preliminary fix for an open source PostgreSQL database

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AV
Avinash Vallarapu
Feb 24, 2019

There has been a discussion in several forums since a couple of years about the Linux FSYNC issue for databases and applications using Buffered IO, but not O_DIRECT. Thus, Kernel developers came up with a fix that helps PostgreSQL detect such fsync issue. This blog contains a deep dive into this issue and fix done to it.
AV

Avinash Vallarapu

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