5 more days until finals are over... the urge to drop everything and work on a composefs-based chunked nix store implementation have never been stronger
May 14, 2026 at 10:24 PM
5 more days until finals are over... the urge to drop everything and work on a composefs-based chunked nix store implementation have never been stronger
but you can make a completely stateless nixos (composefs /etc/ with no mutable upper layer, userborn with static users, tmpfs /var)
August 12, 2026 at 6:56 PM
but you can make a completely stateless nixos (composefs /etc/ with no mutable upper layer, userborn with static users, tmpfs /var)
We are also testing sealed bootable container images! These are installs which "include all the components needed to create a fully verified boot chain, from the firmware to the operating system composefs image."
Please give them a try and give us feedback […]
Please give them a try and give us feedback […]
Original post on fosstodon.org
fosstodon.org
April 29, 2026 at 5:23 PM
We are also testing sealed bootable container images! These are installs which "include all the components needed to create a fully verified boot chain, from the firmware to the operating system composefs image."
Please give them a try and give us feedback […]
Please give them a try and give us feedback […]
This talk by @siosm.bsky.social covers the important work being done to enable verification for bootc images like ours. youtu.be/D7HqckeHlx8
"Using composefs and fs-verity, we can link a UKI to a complete read only filesystem tree, guaranteeing that every byte of every file is verified on load."
"Using composefs and fs-verity, we can link a UKI to a complete read only filesystem tree, guaranteeing that every byte of every file is verified on load."
UKIs and composefs support for Bootable Containers - DevConf.CZ 2025
YouTube video by DevConf
www.youtube.com
August 11, 2025 at 1:00 AM
This talk by @siosm.bsky.social covers the important work being done to enable verification for bootc images like ours. youtu.be/D7HqckeHlx8
"Using composefs and fs-verity, we can link a UKI to a complete read only filesystem tree, guaranteeing that every byte of every file is verified on load."
"Using composefs and fs-verity, we can link a UKI to a complete read only filesystem tree, guaranteeing that every byte of every file is verified on load."
Besides welcoming our new, developing spin in the form of Fedora COSMIC Atomic, we had a few more updates from the Atomic Desktop side of the project.
The main change is the implementation of composefs which brings you "the reliability of disk images with the flexibility of files." This and […]
The main change is the implementation of composefs which brings you "the reliability of disk images with the flexibility of files." This and […]
Original post on fosstodon.org
fosstodon.org
April 21, 2025 at 1:31 AM
Besides welcoming our new, developing spin in the form of Fedora COSMIC Atomic, we had a few more updates from the Atomic Desktop side of the project.
The main change is the implementation of composefs which brings you "the reliability of disk images with the flexibility of files." This and […]
The main change is the implementation of composefs which brings you "the reliability of disk images with the flexibility of files." This and […]
We now have a working appstream catalogue with data hosted at appstream.aerynos.dev
Appstream is a cross-distribution collaboration effort to unify software metadata so it can be handled by Software Centres in a standardised way.
#Linux #AerynOS #Immutable #ImmutableDistro #DistroDevelopment
Appstream is a cross-distribution collaboration effort to unify software metadata so it can be handled by Software Centres in a standardised way.
#Linux #AerynOS #Immutable #ImmutableDistro #DistroDevelopment
August 20, 2025 at 2:47 PM
We now have a working appstream catalogue with data hosted at appstream.aerynos.dev
Appstream is a cross-distribution collaboration effort to unify software metadata so it can be handled by Software Centres in a standardised way.
#Linux #AerynOS #Immutable #ImmutableDistro #DistroDevelopment
Appstream is a cross-distribution collaboration effort to unify software metadata so it can be handled by Software Centres in a standardised way.
#Linux #AerynOS #Immutable #ImmutableDistro #DistroDevelopment
🎉 Welcoming newly accepted #CNCF Sandbox projects! Spin & SpinKube, container2wasm, SlimFaas, Tratteria, k0s, Runme Notebooks, KubeFleet, CloudNativePG, Podman Desktop, Podman Container Tools (Podman, Buildah, Skopeo), bootc, and composefs. Find all related links on #Kubernative t.me/kubernative/...
January 22, 2025 at 7:59 AM
🎉 Welcoming newly accepted #CNCF Sandbox projects! Spin & SpinKube, container2wasm, SlimFaas, Tratteria, k0s, Runme Notebooks, KubeFleet, CloudNativePG, Podman Desktop, Podman Container Tools (Podman, Buildah, Skopeo), bootc, and composefs. Find all related links on #Kubernative t.me/kubernative/...
Posting because I'm happy to see it making ongoing progress, & because I keep forgetting the name…
Composefs is such a neat idea, a container image storage based on content-addressing. Much better page cache utilization!
github.com/composefs/co...
Composefs is such a neat idea, a container image storage based on content-addressing. Much better page cache utilization!
github.com/composefs/co...
GitHub - composefs/composefs: The reliability of disk images, the flexibility of files
The reliability of disk images, the flexibility of files - composefs/composefs
github.com
July 3, 2025 at 1:27 AM
Posting because I'm happy to see it making ongoing progress, & because I keep forgetting the name…
Composefs is such a neat idea, a container image storage based on content-addressing. Much better page cache utilization!
github.com/composefs/co...
Composefs is such a neat idea, a container image storage based on content-addressing. Much better page cache utilization!
github.com/composefs/co...
Red Hat is donating a comprehensive toolset for containers including bootc, Buildah, Composefs, Podman, Podman Desktop, and Skopeo, to the #CNCF.
www.redhat.com/en/blog/red-...
www.redhat.com/en/blog/red-...
Red Hat to Contribute Comprehensive Container Tools Collection to Cloud Native Computing Foundation
Red Hat to contribute comprehensive container Tools Collection to Cloud Native Computing Foundation
www.redhat.com
November 15, 2024 at 3:46 PM
Red Hat is donating a comprehensive toolset for containers including bootc, Buildah, Composefs, Podman, Podman Desktop, and Skopeo, to the #CNCF.
www.redhat.com/en/blog/red-...
www.redhat.com/en/blog/red-...
WOW I didn't realize I am already using #bootc and #composefs on my system.
Thanks #ublue #auroralinux
Now let's check the status of #podman + ComposeFS...
Thanks #ublue #auroralinux
Now let's check the status of #podman + ComposeFS...
April 27, 2025 at 4:03 PM
WOW I didn't realize I am already using #bootc and #composefs on my system.
Thanks #ublue #auroralinux
Now let's check the status of #podman + ComposeFS...
Thanks #ublue #auroralinux
Now let's check the status of #podman + ComposeFS...
We would stress that this is very initial work and is helping the team to identify how this development worksteam should continue. By way of example, we may not use composefs and instead move to making our own eorfs images as moss already has it's own deduplicated hardlink cache.
August 20, 2025 at 2:47 PM
We would stress that this is very initial work and is helping the team to identify how this development worksteam should continue. By way of example, we may not use composefs and instead move to making our own eorfs images as moss already has it's own deduplicated hardlink cache.
WE CAN RUN SO MANY WORKLOADS.
IFF we stop sucking egg at running containers! Why are we so bad at overlays! Can we please improve!
Composefs is happening!!! So so so thrilled we are finally escaping this tar-pit of waste that conventional overlays lay waste to us from.
IFF we stop sucking egg at running containers! Why are we so bad at overlays! Can we please improve!
Composefs is happening!!! So so so thrilled we are finally escaping this tar-pit of waste that conventional overlays lay waste to us from.
Page Cache Sharing Looks To Be Very Beneficial For EROFS Containers - https://www.phoronix.com/news/EROFS-Page-Cache-Sharing
Page Cache Sharing Looks To Be Very Beneficial For EROFS Containers
One of the features being worked on for a while with the read-only EROFS file-system is page cache sharing. Besides EROFS being popular on some mobile/embedded devices, this open-source read-only file-system has been quite popular for container usage and there this page cache sharing functionality can provide some significant reductions in RAM usage...
www.phoronix.com
December 24, 2025 at 11:47 AM
WE CAN RUN SO MANY WORKLOADS.
IFF we stop sucking egg at running containers! Why are we so bad at overlays! Can we please improve!
Composefs is happening!!! So so so thrilled we are finally escaping this tar-pit of waste that conventional overlays lay waste to us from.
IFF we stop sucking egg at running containers! Why are we so bad at overlays! Can we please improve!
Composefs is happening!!! So so so thrilled we are finally escaping this tar-pit of waste that conventional overlays lay waste to us from.
this is like a birthday party where you don't invite the person who's birthday it is
February 28, 2026 at 8:59 PM
this is like a birthday party where you don't invite the person who's birthday it is
Discover what’s new in #Fedora Atomic Desktops 42—#GNOME 48, #KDE Plasma 6.3, #COSMIC support, composefs by default, and more.
linuxiac.com/whats-new-in...
linuxiac.com/whats-new-in...
What’s New in Fedora 42’s Atomic Desktops
Discover what’s new in Fedora Atomic Desktops 42—GNOME 48, KDE Plasma 6.3, COSMIC support, composefs by default, and more.
linuxiac.com
April 18, 2025 at 3:46 PM
Discover what’s new in #Fedora Atomic Desktops 42—#GNOME 48, #KDE Plasma 6.3, #COSMIC support, composefs by default, and more.
linuxiac.com/whats-new-in...
linuxiac.com/whats-new-in...
KubeCon SLC 2024 Recap Continues.
Red Hat to Donate Podman Along With Other Container Tools to CNCF
Buildah, a daemonless tool for building Open Container Initiative (OCI) images; Composefs, an overlay file system; and Skopeo, a cmd line tool for copying images.
www.youtube.com/shorts/nX0dW...
Red Hat to Donate Podman Along With Other Container Tools to CNCF
Buildah, a daemonless tool for building Open Container Initiative (OCI) images; Composefs, an overlay file system; and Skopeo, a cmd line tool for copying images.
www.youtube.com/shorts/nX0dW...
November 29, 2024 at 4:30 PM
KubeCon SLC 2024 Recap Continues.
Red Hat to Donate Podman Along With Other Container Tools to CNCF
Buildah, a daemonless tool for building Open Container Initiative (OCI) images; Composefs, an overlay file system; and Skopeo, a cmd line tool for copying images.
www.youtube.com/shorts/nX0dW...
Red Hat to Donate Podman Along With Other Container Tools to CNCF
Buildah, a daemonless tool for building Open Container Initiative (OCI) images; Composefs, an overlay file system; and Skopeo, a cmd line tool for copying images.
www.youtube.com/shorts/nX0dW...
Some of the devs are actually pretty solidly assholes on this turns out github.com/ublue-os/mai...
Include smallest pieces necessary to make installing Nix easier · Issue #765 · ublue-os/main
I've heard on the grapevine that composefs might break the strategies used by https://github.com/determinatesystems/nix-installer to get Nix working on atomic systems. To make this easier for peopl...
github.com
July 26, 2025 at 9:19 PM
Some of the devs are actually pretty solidly assholes on this turns out github.com/ublue-os/mai...
Red Hat to contribute container tech (Podman, bootc, ComposeFS...) to CNCF
レッドハット、コンテナ技術（Podman、bootc、ComposeFS...）をCNCFに貢献へ
🔺 267
💬 11
🔗 HN Post | Article
レッドハット、コンテナ技術（Podman、bootc、ComposeFS...）をCNCFに貢献へ
🔺 267
💬 11
🔗 HN Post | Article
Red Hat to Contribute Comprehensive Container Tools Collection to Cloud Native Computing Foundation
Red Hat to contribute comprehensive container Tools Collection to Cloud Native Computing Foundation
www.redhat.com
November 16, 2024 at 5:43 PM
not super related except also a Content Addressable Store thing, super interesting composefs just had a major update to their splitstream core representation, which is going to be crucial to their oci and perhaps maybe ostree distribution?
github.com/containers/c...
github.com/containers/c...
splitstream: Rework file format · containers/composefs-rs@54c3c6d
This is a substantial change to the splitstream file format to add more
features (required for ostree support) and to add forwards- and
backwards- compatibility mechanisms for future changes. This...
github.com
January 12, 2026 at 4:56 AM
not super related except also a Content Addressable Store thing, super interesting composefs just had a major update to their splitstream core representation, which is going to be crucial to their oci and perhaps maybe ostree distribution?
github.com/containers/c...
github.com/containers/c...
Here we are with our latest overview of recently added @cncf.io projects! This time, it covers Podman Container Tools and Podman Desktop, bootc, composefs, k0s, KubeFleet, SpinKube, container2wasm, Runme Notebooks for DevOps, SlimFaas, Tokenetes, CloudNativePG, and Drasi.
palark.com/blog/cncf-sa...
palark.com/blog/cncf-sa...
Exploring Cloud Native projects in CNCF Sandbox. Part 5: 13 arrivals of January 2025 | Tech blog | Palark
Learn about the following new CNCF projects: Podman Container Tools and Podman Desktop, bootc, composefs, k0s, KubeFleet, SpinKube, container2wasm, Runme Notebooks for DevOps, SlimFaas, Tokenetes, Clo...
palark.com
December 18, 2025 at 2:35 PM
Here we are with our latest overview of recently added @cncf.io projects! This time, it covers Podman Container Tools and Podman Desktop, bootc, composefs, k0s, KubeFleet, SpinKube, container2wasm, Runme Notebooks for DevOps, SlimFaas, Tokenetes, CloudNativePG, and Drasi.
palark.com/blog/cncf-sa...
palark.com/blog/cncf-sa...