Re: [GIT PULL] bcachefs changes for 6.17

Kent Overstreet
2025-08-11T16:10:07Z

On Mon, Aug 11, 2025 at 11:02:24PM +0700, Aquinas Admin wrote:
> > Exactly. Which is why the Meta infrastructure is built completely on btrfs
> > and its features. We have saved billions of dollars in infrastructure costs
> > with the features and robustness of btrfs.
> >
> > Btrfs doesn't need me or anybody else wandering around screaming about how
> > everybody else sucks to gain users. The proof is in the pudding. If you read
> > anything that I've wrote in my commentary about other file systems you will
> > find nothing but praise and respect, because this is hard and we all make
> > our tradeoffs.
> >
> Sure, of course. The problem is that Meta doesn't need a general-purpose file
> system. And yes, and in general, Meta is not the kind of company that makes
> technically sound decisions.

This is entirely unnecessary.

> Has the problem with RAID5/6 (write hole) been solved in more than 20
> years of development?

My understanding is that RAID5/6 v2, with the stripes tree, is intended
to fix this (the same as how it works in bcachefs).