#composefs — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #composefs, aggregated by home.social.
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Alongside the Fedora 44 release, I’m happy to announce that we have sealed bootable container images ready for testing for the Fedora Atomic Desktops!
Sealed bootable container images include all the components needed to create a fully verified boot chain, from the firmware to the operating system composefs image. This relies on Secure Boot on UEFI systems.
More details at https://fedoramagazine.org/sealed-atomic-desktops-test-images/ and https://github.com/travier/fedora-atomic-desktops-sealed
#Fedora #AtomicDesktops #Silverblue #Kinoite #bootc #composefs
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The recording of my third talk with Pragyan and Vitaly at All Systems Go! about UKI, composefs and remote attestation for Bootable Containers is now available: https://app.media.ccc.de/v/all-systems-go-2025-362-uki-composefs-and-remote-attestation-for-bootable-containers
#ASG2025 #AllSystemsGo #AllSystemsGo2025 #UKI #composefs #bootc #BootableContainers #RemoteAttestation
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The recording of my third talk with Pragyan and Vitaly at All Systems Go! about UKI, composefs and remote attestation for Bootable Containers is now available: https://app.media.ccc.de/v/all-systems-go-2025-362-uki-composefs-and-remote-attestation-for-bootable-containers
#ASG2025 #AllSystemsGo #AllSystemsGo2025 #UKI #composefs #bootc #BootableContainers #RemoteAttestation
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The recording of my third talk with Pragyan and Vitaly at All Systems Go! about UKI, composefs and remote attestation for Bootable Containers is now available: https://app.media.ccc.de/v/all-systems-go-2025-362-uki-composefs-and-remote-attestation-for-bootable-containers
#ASG2025 #AllSystemsGo #AllSystemsGo2025 #UKI #composefs #bootc #BootableContainers #RemoteAttestation
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The recording of my third talk with Pragyan and Vitaly at All Systems Go! about UKI, composefs and remote attestation for Bootable Containers is now available: https://app.media.ccc.de/v/all-systems-go-2025-362-uki-composefs-and-remote-attestation-for-bootable-containers
#ASG2025 #AllSystemsGo #AllSystemsGo2025 #UKI #composefs #bootc #BootableContainers #RemoteAttestation
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The recording of my third talk with Pragyan and Vitaly at All Systems Go! about UKI, composefs and remote attestation for Bootable Containers is now available: https://app.media.ccc.de/v/all-systems-go-2025-362-uki-composefs-and-remote-attestation-for-bootable-containers
#ASG2025 #AllSystemsGo #AllSystemsGo2025 #UKI #composefs #bootc #BootableContainers #RemoteAttestation
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ARCH LINUX BOOTC WORKS. I DECLARE THE LINUX ATOMIC AGE IS UPON US!
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Highlights from the main #erofs (used by #composefs) merge for #Linux 6.17[1]:
""We now support metadata compression. It can be useful for embedded use cases or archiving a large number of small files.
Additionally, readdir performance has been improved by enabling readahead (note that it was already common practice for ext3/4 non-dx and f2fs directories). We may consider further improvements later toalign with ext4's s_inode_readahead_blks behavior for slow devices too.""
[1] https://git.kernel.org/torvalds/c/76a9701325d39d8602695b19c49a9d0828c897ca
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Highlights from the main #erofs (used by #composefs) merge for #Linux 6.17[1]:
""We now support metadata compression. It can be useful for embedded use cases or archiving a large number of small files.
Additionally, readdir performance has been improved by enabling readahead (note that it was already common practice for ext3/4 non-dx and f2fs directories). We may consider further improvements later toalign with ext4's s_inode_readahead_blks behavior for slow devices too.""
[1] https://git.kernel.org/torvalds/c/76a9701325d39d8602695b19c49a9d0828c897ca
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Highlights from the main #erofs (used by #composefs) merge for #Linux 6.17[1]:
""We now support metadata compression. It can be useful for embedded use cases or archiving a large number of small files.
Additionally, readdir performance has been improved by enabling readahead (note that it was already common practice for ext3/4 non-dx and f2fs directories). We may consider further improvements later toalign with ext4's s_inode_readahead_blks behavior for slow devices too.""
[1] https://git.kernel.org/torvalds/c/76a9701325d39d8602695b19c49a9d0828c897ca
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Highlights from the main #erofs (used by #composefs) merge for #Linux 6.17[1]:
""We now support metadata compression. It can be useful for embedded use cases or archiving a large number of small files.
Additionally, readdir performance has been improved by enabling readahead (note that it was already common practice for ext3/4 non-dx and f2fs directories). We may consider further improvements later toalign with ext4's s_inode_readahead_blks behavior for slow devices too.""
[1] https://git.kernel.org/torvalds/c/76a9701325d39d8602695b19c49a9d0828c897ca
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Highlights from the main #erofs (used by #composefs) merge for #Linux 6.17[1]:
""We now support metadata compression. It can be useful for embedded use cases or archiving a large number of small files.
Additionally, readdir performance has been improved by enabling readahead (note that it was already common practice for ext3/4 non-dx and f2fs directories). We may consider further improvements later toalign with ext4's s_inode_readahead_blks behavior for slow devices too.""
[1] https://git.kernel.org/torvalds/c/76a9701325d39d8602695b19c49a9d0828c897ca
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We are bringing UKI and strong boot integrity guarantees with composefs to Bootable Containers. We demonstrated our latest progress on that front at DevConf.cz 2025: https://pretalx.devconf.info/devconf-cz-2025/talk/739KGC/
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We are bringing UKI and strong boot integrity guarantees with composefs to Bootable Containers. We demonstrated our latest progress on that front at DevConf.cz 2025: https://pretalx.devconf.info/devconf-cz-2025/talk/739KGC/
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We are bringing UKI and strong boot integrity guarantees with composefs to Bootable Containers. We demonstrated our latest progress on that front at DevConf.cz 2025: https://pretalx.devconf.info/devconf-cz-2025/talk/739KGC/
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We are bringing UKI and strong boot integrity guarantees with composefs to Bootable Containers. We demonstrated our latest progress on that front at DevConf.cz 2025: https://pretalx.devconf.info/devconf-cz-2025/talk/739KGC/
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We are bringing UKI and strong boot integrity guarantees with composefs to Bootable Containers. We demonstrated our latest progress on that front at DevConf.cz 2025: https://pretalx.devconf.info/devconf-cz-2025/talk/739KGC/
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Lol @siosm we've got a PR in to fastfetch to fix the disk display thing for #composefs
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@abbra Sorry for the late reply, missed your toot.
Is there really no way to create a directory at runtime anymore? Creating and maintaining a container image where the only difference is a symlink seems a little tedious.
I already tried tmpfiles.d, but either I did it wrong or it runs too late in the boot process and the root filesystem is already read-only...
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@hopland this so much. 😅
It takes the whole layering approach to the next level with something like #composefs. Something that will be a real contender to #nix current design. All without necessarily require to reinvent the tool you use to packer either. Getting that repeatedly and reproducible struct from the normal built artifact. 🤯
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If you are a maintainer of #nix, #nixpkgs or #nixos: listen up.
You've got about 2 years or so being a serious contender, until someone like #lix or even #ostree with #ComposeFS comes in and eats your lunch.
Part and parcel of that is the community, the language, the security of knowing that there is culpability and responsibility.
Linus Torvalds had to walk it off because an entire foundation told him to. If the nix "community" is beyond this, why give #DeterminateSystems contracts?
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Le #système de fichiers #ComposeFS est désormais stable
https://blog.desdelinux.net/fr/Le-syst%C3%A8me-de-fichiers-composefs-est-d%C3%A9sormais-stable/
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#composefs: an opportunistically sharing verified image filesystem
https://www.youtube.com/watch?v=ZgooMj3XiwE -
Wanna know more about #composefs, the recently proposed file system to mount read-only images with a bunch of cool features? It for example allow opportunistic sharing for podman container layers; and its verification aspects are of interest for the ostree project.
Then check out this @LWN article that's now freely available: https://lwn.net/Articles/917097/
composefs is made my Alexander Larsson (known among others for #Flatpak) and @giuseppe
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Mit ComposeFS arbeitet Red Hat an einem weiteren Linux-Dateisystem. Die technischen Grundlagen sind interessant, aber vom Praxiseinsatz ist es weit entfernt.
Und wieder mal ein neues Dateisystem für Linux: Red Hat startet ComposeFS
