# "The COW filesystem for Linux that won't eat your data".

Bcachefs is an advanced new filesystem for Linux, with an emphasis on
reliability and robustness and the complete set of features one would expect
from a modern filesystem.

* Copy on write (COW) - like zfs or btrfs
* Full data and metadata checksumming
* Multiple devices
* Replication
* [[Erasure coding|ErasureCoding]] (not stable)
* [[Caching, data placement|Caching]]
* [[Compression]]
* [[Encryption]]
* [[Snapshots]]
* Scalable - has been tested to 100+ TB, expected to scale far higher (testers wanted!)
* High performance, low tail latency
* Already working and stable, with a small community of users

## Philosophy

We prioritize robustness and reliability over features: we make every effort to
ensure you won't lose data. It's building on top of a codebase with a pedigree
- bcache already has a reasonably good track record for reliability Starting
from there, bcachefs development has prioritized incremental development, and
keeping things stable, and aggressively fixing design issues as they are found;
the bcachefs codebase is considerably more robust and mature than upstream
bcache.

## Documentation

* [[Getting Started|GettingStarted]]
* [[User manual|bcachefs-principles-of-operation.pdf]]
* [[FAQ]]

## Contact and support

Developing a filesystem is also not cheap, quick, or easy; we need funding!
Please chip in on [[Patreon|https://www.patreon.com/bcachefs]]

Join us in the bcache [[IRC|Irc]] channel, we have a small group of bcachefs
users and testers there: #bcache on OFTC (irc.oftc.net).

Mailing list: [[https://lore.kernel.org/linux-bcachefs/]], or
linux-bcachefs@vger.kernel.org.

Bug trackers: [[bcachefs|https://github.com/koverstreet/bcachefs/issues]],
[[bcachefs-tools|https://github.com/koverstreet/bcachefs-tools/issues]]