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Reaching the 3rd Generation

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Kent Overstreet, the creator of bcachefs, helps us understand where his new filesystem fits, what it's like to upstream a new filesystem, and how they've solved the RAID write hole. Special Guest: Kent Overstreet.

Kent Overstreet, the creator of bcachefs, helps us understand where his new filesystem fits, what it's like to upstream a new filesystem, and how they've solved the RAID write hole.

Kent Overstreet, the creator of bcachefs, helps us understand where his new filesystem fits, what it's like to upstream a new filesystem, and how they've solved the RAID write hole.Special Guest: Kent Overstreet.Sponsored By:<ul><li><a href="http://tailscale.com/linuxunplugged">Tailscale</a>: <a href="http://tailscale.com/linuxunplugged">Tailscale is a programmable networking software that is private and secure by default - get it free on up to 100 devices!</a></li><li><a href="https://kolide.com/unplugged">Kolide</a>: <a href="https://kolide.com/unplugged">Kolide is a device trust solution for companies with Okta, and they ensure that if a device isn’t trusted and secure, it can’t log into your cloud apps.</a></li></ul><a href="https://jupitersignal.memberful.com/checkout?plan=52946">Support LINUX Unplugged</a>Links:<ul><li><a href="https://strike.me/">💥 Gets Sats Quick and Easy with Strike</a>
</li><li><a href="https://www.fountain.fm/show/dWiuBeqpDSM86AwXRXov">📻 LINUX Unplugged on Fountain.FM</a>
</li><li><a href="https://boltz.exchange/">Boltz</a> — Privacy First, Non-Custodial Bitcoin Exchange.</li><li><a href="https://bcachefs.org/">bcachefs</a> — 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.
</li><li><a href="https://bcachefs.org/ErasureCoding/">bcachefs Erasure coding</a> — Bcachefs takes advantage of the fact that it is already a copy-on-write filesystem. If we're designing our filesystem to avoid update-in-place, why would we do update-in-place in our RAID implementation?</li><li><a href="https://bcachefs.org/Caching/">bcachefs Caching</a> — bcachefs can be configured for writethrough, writeback, and writearound caching, as well as other more specialized setups.


</li><li><a href="https://bcachefs.org/Compression/">bachefs Compression</a> — Unlike other filesystems that typically do compression at the block level, bcachefs does compression at the extent level - variable size chunks, up to (by default) 128k.</li><li><a href="https://bcachefs.org/Encryption/">bcachefs Encryption</a> — bcachefs uses AEAD style encryption (ChaCha20/Poly1305), where each encrypted block is authenticated with a MAC, with a chain of trust up to root (the superblock), and every encrypted block has a unique nonce.
</li><li><a href="https://bcachefs.org/Snapshots/">bcachefs Snapshots</a> — bcachefs provides Btrfs style writeable snapshots, at subvolume granularity.
</li><li><a href="https://lkml.org/lkml/2015/8/21/22">(2015) [ANNOUNCE] bcachefs - a general purpose COW filesystem</a> — It's taken a long time to get to this point - longer than I would have guessed if you'd asked me back when we first started talking about it - but I'm pretty damn proud of where it's at now.</li><li><a href="https://www.patreon.com/bcachefs">Kent Overstreet's Patreon</a>
</li><li><a href="https://unpluggedcore.com/">Unplugged Core Membership</a>
</li><li><a href="https://jupitersignal.memberful.com/checkout?plan=74364&amp;coupon=2024">Jupiter Signal PROMO 2024</a> — $3 off a month forever.
</li><li><a href="https://webamp.org/">Webamp</a> — Winamp 2 re-implemented for the browser.
</li><li><a href="https://github.com/captbaritone/webamp">Webamp on GitHub</a> — Winamp 2 reimplemented for the browse.
</li><li><a href="http://pebkac.lol">The Official JB BBS!</a> — vt52 hosts our new official JB BBS! `telnet http://pebkac.lol`</li></ul>

Chris Fisher

Wes Payne

Brent Gervais

Kent Overstreet

LINUX Unplugged

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