I think it could be a very good replacement. In my opinion ZFS is still very static and disk/block based with some traditional RAID modes on top. It can provid

I think it could be a very good replacement. In my opinion ZFS is still very static and disk/block based with some traditional RAID modes on top. It can provide the same redundancy and safety but with tons more flexibility. For example having different redundancy levels using the same pool of disks and changing redundancy levels on the fly. It does feel like a huge step in in terms of "here are my disks" and then "please store this data this way". bcachefs then just does it in a reasonable and efficient way. Way better than having to set up all of your disk RAID configs upfront. That being said it definitely still needs stability work. I tried it and it corrupted itself. So I love the idea, the design seems good overall. But it is going to need lots of testing and tweaking to become reliable. However it does seem like a solid addition to the filesystem space and I think being upstream will allow more people to work on it, avoid extra maintenance burden by staying in sync with changes and get the attention it deserves. I wrote more about why I like the design and how it corrupted for me here: https://kevincox.ca/2023/06/10/bcachefs-attempt/ https://kevincox.ca/2023/06/10/bcachefs-attempt/