Subj : [$] Atomic writes without tears
To   : All
From : LWN.net
Date : Fri May 24 2024 22:45:04

[$] 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.

======================================================================
Link to news story:
https://lwn.net/Articles/974578/


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