On Sat, Aug 09, 2025 at 04:37:56PM -0400, Kent Overstreet wrote: > At this point in the development and deployment in bcachefs I can say, > with confidence, that bcachefs is changing that, and that in time we > will deliver _better_ reliability than ext4/xfs. I should add, based on the data I'm seeing - this isn't far off, but due to the sheer amount of deployment and usage ext4/xfs have had it'll be awhile (perhaps a year) before we have the data to make hard claims. The data from users versus btrfs is much clearer, we're already delivering much better reliability in terms of "will my data be safe" - there are numerous failure modes that simply don't exist in bcachefs. And where we've had significant bugs (I count ~2 that have made it all the way to a mainline .0 release), good debugging tools and a clean design have meant that we've been able to resolve them by about the third report, and in every case with significant hardening done after the fact and real support for affected users. IOW: your data is safe on bcachefs, and that's priority #1 for a filesystem.
