[$] Atomic writes without tears
Date:
Fri, 24 May 2024 21:33:35 +0000
Description:
John Garry and Ted Ts'o led a discussion about supporting atomic writes for buffered
I/O, without any torn (or partial) writes to the device, at the 2024 Linux Storage,
Filesystem, Memory Management, and BPF Summit . It is something of a continuation of a discussion at last year's
summit . The goal is to help PostgreSQL, which writes its data using
16KB buffered I/O; it currently has to do a lot of extra work to ensure
that its data is safe on disk. A promise of non-torn, 16KB buffered writes would allow the database
to avoid doing double writes.
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Link to news story:
https://lwn.net/Articles/974578/
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