#xfs — Public Fediverse posts

Today's PSA: #XFS v4 filesystems are not supported by #Debian kernel packages 6.18.5 and later so older systems may run into issues. I have a created-in-2011 snowflake VM running -testing that was bitten by this a few months back.

For users using stable this will only be an issue with the upgrade to forky (Debian 14), but it's a bit nasty.

See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1126710

Today's PSA: #XFS v4 filesystems are not supported by #Debian kernel packages 6.18.5 and later so older systems may run into issues. I have a created-in-2011 snowflake VM running -testing that was bitten by this a few months back.

For users using stable this will only be an issue with the upgrade to forky (Debian 14), but it's a bit nasty.

See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1126710

Affecting millions of systems, a kernel flaw discovered by Qualys could allow users to gain root privileges
https://www.linux-magazine.com/Online/News/Yet-Another-Linux-Kernel-Vulnerability-Discovered?utm_source=mlm
#Linux #kernel #Vulnerability #XFS #SELinux #Claude #exploitation

Affecting millions of systems, a kernel flaw discovered by Qualys could allow users to gain root privileges
https://www.linux-magazine.com/Online/News/Yet-Another-Linux-Kernel-Vulnerability-Discovered?utm_source=mlm
#Linux #kernel #Vulnerability #XFS #SELinux #Claude #exploitation

[$] Fedora approves a smaller GRUB

Leo Sandoval and Marta Lewandowska have put forward a change proposal for Fedora 45, which is expected in October, to provide a separate, slimmed-down version of GRUB for a niche u [...]

https://lwn.net/Articles/1085609/ #LWN #Linux #RedHat #systemd #XFS

[$] Fedora approves a smaller GRUB

Leo Sandoval and Marta Lewandowska have put forward a change proposal for Fedora 45, which is expected in October, to provide a separate, slimmed-down version of GRUB for a niche u [...]

https://lwn.net/Articles/1085609/ #LWN #Linux #RedHat #systemd #XFS

Patch your Linux kernel, disable XFS reflink where it isn't strictly needed, and stop letting unprivileged users write to directories near anything important.

Reward: You've received a Funeral Wreath of Root Privilege — it looks great on your compromised system.

#Linux #ZeroDay #RootPrivilege #XFS #CVE202664600 #PrivilegeEscalationUnlocked (3/3)

Patch your Linux kernel, disable XFS reflink where it isn't strictly needed, and stop letting unprivileged users write to directories near anything important.

Reward: You've received a Funeral Wreath of Root Privilege — it looks great on your compromised system.

#Linux #ZeroDay #RootPrivilege #XFS #CVE202664600 #PrivilegeEscalationUnlocked (3/3)

Discover the RefluXFS Linux vulnerability (CVE-2026-64600) in XFS that allows local users to overwrite protected files and gain root privileges.

#RefluXFS #CVE202664600 #LinuxKernel #Cybersecurity #XFS

https://meterpreter.org/refluxfs-linux-vulnerability/?utm_source=mastodon&utm_medium=jetpack_social

[VULN] "Une faille dans le système de fichiers XFS permet de prendre le contrôle d'une machine Linux"
CVE-2026-64600
👇
https://www.numerama.com/cyberguerre/2299983-refluxfs-la-faille-linux-qui-contourne-toutes-vos-protections-dort-depuis-2017-et-claude-mythos-la-trouvee.html

💬
⬇️
https://infosec.pub/post/49886817

#CyberVeille #Linux #XFS

[VULN] "Une faille dans le système de fichiers XFS permet de prendre le contrôle d'une machine Linux"
CVE-2026-64600
👇
https://www.numerama.com/cyberguerre/2299983-refluxfs-la-faille-linux-qui-contourne-toutes-vos-protections-dort-depuis-2017-et-claude-mythos-la-trouvee.html

💬
⬇️
https://infosec.pub/post/49886817

#CyberVeille #Linux #XFS

RefluXFS: Rechteausweitung im Linux-Kernel über XFS-Dateisystem

Unter der Bezeichnung CVE-2026-64600, kurz RefluXFS, wurde eine Schwachstelle im Linux-Kernel bekannt, die es einem gewöhnlichen, nicht privilegierten lokalen Benutzer erlaubt, sich Root-Rechte zu verschaffen. Betroffen sind Systeme mit reflink-fähigem XFS-Dateisystem – darunter zahlreiche Standardinstallationen großer Unternehmensdistributionen

https://www.all-about-security.de/refluxfs-rechteausweitung-im-linux-kernel-ueber-xfs-dateisystem/

#linux #cve #xfs #cybersecurity

Qualys discloses CVE-2026-64600 (RefluXFS), an XFS privilege escalation to root affecting 16.4M+ Linux systems. Patch the kernel and reboot now.

#RefluXFS #CVE202664600 #LinuxKernel #PrivilegeEscalation #XFS #InfoSec

https://securityonline.info/refluxfs-cve-2026-64600-xfs-root/?utm_source=mastodon&utm_medium=jetpack_social

[$] Merging famfs?

The famfs filesystem, which is meant to provide shared access to huge memory-resident files on CXL and other devices, returned to the Linux Storage, Filesystem, Memory Management, [...]

https://lwn.net/Articles/1082687/ #LWN #Linux #kernel #XFS #BPF #FUSE

[$] Merging famfs?

The famfs filesystem, which is meant to provide shared access to huge memory-resident files on CXL and other devices, returned to the Linux Storage, Filesystem, Memory Management, [...]

https://lwn.net/Articles/1082687/ #LWN #Linux #kernel #XFS #BPF #FUSE

[$] The kernel's iomap layer

Conversations about the kernel's filesystem implementations often involve a layer called "iomap", but relatively few people can reliably say what iomap actually is. That is just t [...]

https://lwn.net/Articles/1079415/ #LWN #Linux #kernel #Git #XFS

[$] The kernel's iomap layer

Conversations about the kernel's filesystem implementations often involve a layer called "iomap", but relatively few people can reliably say what iomap actually is. That is just t [...]

https://lwn.net/Articles/1079415/ #LWN #Linux #kernel #Git #XFS

For all those people building #NAS boxes with huge CPUs and lots of #RAM because that's how Linus (of YouTube not #Linux) did it, I'm running a 50+ TiB NAS on a Celeron N5105 with 8GiB of RAM using #LVM and #XFS.

My highest loads are during backups (borg) when the system hits just 80% idle. Use your precious RAM for gaming.

#sysadmin

For all those people building #NAS boxes with huge CPUs and lots of #RAM because that's how Linus (of YouTube not #Linux) did it, I'm running a 50+ TiB NAS on a Celeron N5105 with 8GiB of RAM using #LVM and #XFS.

My highest loads are during backups (borg) when the system hits just 80% idle. Use your precious RAM for gaming.

#sysadmin

📦💽 Fedora 45: Tehnologia de stocare Stratis este integrată direct în instalatorul grafic Anaconda 🚀🐧

O schimbare importantă se pregătește pentru viitoarele versiuni ale distribuției Fedora. Suita de stocare Stratis, soluția inovatoare de gestionare a volumelor de disc dezvoltată de Red Hat, va fi integrată direct în interfața grafică a instalatorului Anaconda, permițând utilizatorilor să configureze această tehnologie avansată încă din faza de instalare a sistemului de operare.

Până acum, deși Stratis era disponibil în Fedora, configurarea sa ca partiție de boot sau sistem de fișiere principal trebuia realizată manual, din linia de comandă, un proces destul de tehnic și greu accesibil utilizatorilor obișnuiți.

Iată de ce această integrare reprezintă un pas mare înainte:

🔹 Ce este Stratis și cu ce seamănă?
Stratis este un demon de stocare (storage daemon) care își propune să aducă funcționalitățile avansate din sisteme precum ZFS sau Btrfs (cum ar fi instantaneele/snapshots, alocarea dinamică a spațiului sau thin provisioning, și extinderea rapidă a pool-urilor) în zona sistemelor de fișiere tradiționale din Linux. Stratis funcționează ca un strat de management peste tehnologiile existente din kernel: XFS (pentru sistemul de fișiere), LVM (pentru volumul de date) și dm-thin / dm-cache.

🔹 Configurare simplă prin Anaconda:
Odată cu această actualizare, ecranul de partiționare avansată din Anaconda va include o opțiune nativă pentru a crea un „Stratis Pool”. Utilizatorii vor putea selecta mai multe unități de stocare (SSD-uri/HDD-uri), le vor putea grupa într-un pool comun și vor putea genera volume logice dintr-o interfață grafică curată, fără a mai atinge terminalul.

🔹 Avantajele utilizării Stratis la instalare:

Scalabilitate dinamică: Spațiul de stocare nu mai este blocat rigid la o anumită dimensiune fizică. Volumele cresc automat pe măsură ce adaugi date, utilizând un concept de „stocare virtuală virtualizată”.

Instantanee (Snapshots) rapide: Poți crea puncte de restaurare instantanee pentru sistemul tău, un lucru extrem de util înainte de a face actualizări majore de sistem sau experimente software.

Monitorizare automată: Stratis se ocupă în fundal de optimizarea scrierilor și detectarea problemelor de alocare a spațiului.

Această decizie reflectă strategia pe termen lung a celor de la Red Hat și Fedora de a oferi o alternativă puternică, modulară și modernă la sistemul Btrfs (care este în prezent cel implicit în Fedora Workstation), oferind administratorilor de sistem și utilizatorilor avansați mai multă flexibilitate direct de la prima pornire a calculatorului.

#Fedora #Fedora45 #StratisStorage #AnacondaInstaller #RedHat #LinuxStorage #XFS #OpenSource #TechNews

📦💽 Fedora 45: Tehnologia de stocare Stratis este integrată direct în instalatorul grafic Anaconda 🚀🐧

O schimbare importantă se pregătește pentru viitoarele versiuni ale distribuției Fedora. Suita de stocare Stratis, soluția inovatoare de gestionare a volumelor de disc dezvoltată de Red Hat, va fi integrată direct în interfața grafică a instalatorului Anaconda, permițând utilizatorilor să configureze această tehnologie avansată încă din faza de instalare a sistemului de operare.

Până acum, deși Stratis era disponibil în Fedora, configurarea sa ca partiție de boot sau sistem de fișiere principal trebuia realizată manual, din linia de comandă, un proces destul de tehnic și greu accesibil utilizatorilor obișnuiți.

Iată de ce această integrare reprezintă un pas mare înainte:

🔹 Ce este Stratis și cu ce seamănă?
Stratis este un demon de stocare (storage daemon) care își propune să aducă funcționalitățile avansate din sisteme precum ZFS sau Btrfs (cum ar fi instantaneele/snapshots, alocarea dinamică a spațiului sau thin provisioning, și extinderea rapidă a pool-urilor) în zona sistemelor de fișiere tradiționale din Linux. Stratis funcționează ca un strat de management peste tehnologiile existente din kernel: XFS (pentru sistemul de fișiere), LVM (pentru volumul de date) și dm-thin / dm-cache.

🔹 Configurare simplă prin Anaconda:
Odată cu această actualizare, ecranul de partiționare avansată din Anaconda va include o opțiune nativă pentru a crea un „Stratis Pool”. Utilizatorii vor putea selecta mai multe unități de stocare (SSD-uri/HDD-uri), le vor putea grupa într-un pool comun și vor putea genera volume logice dintr-o interfață grafică curată, fără a mai atinge terminalul.

🔹 Avantajele utilizării Stratis la instalare:

Scalabilitate dinamică: Spațiul de stocare nu mai este blocat rigid la o anumită dimensiune fizică. Volumele cresc automat pe măsură ce adaugi date, utilizând un concept de „stocare virtuală virtualizată”.

Instantanee (Snapshots) rapide: Poți crea puncte de restaurare instantanee pentru sistemul tău, un lucru extrem de util înainte de a face actualizări majore de sistem sau experimente software.

Monitorizare automată: Stratis se ocupă în fundal de optimizarea scrierilor și detectarea problemelor de alocare a spațiului.

Această decizie reflectă strategia pe termen lung a celor de la Red Hat și Fedora de a oferi o alternativă puternică, modulară și modernă la sistemul Btrfs (care este în prezent cel implicit în Fedora Workstation), oferind administratorilor de sistem și utilizatorilor avansați mai multă flexibilitate direct de la prima pornire a calculatorului.

#Fedora #Fedora45 #StratisStorage #AnacondaInstaller #RedHat #LinuxStorage #XFS #OpenSource #TechNews

В 2 раза ускорил компиляцию Unity на том же железе

Творите в Unity на Windows и страдаете от долгих компиляций? Инструкция как без вложений и разгона сократить время билда в 2 раза.

https://habr.com/ru/articles/1049556/

#unity #ryzen #xfs #webgl #ntfs #tmpfs #symlink #linux #il2cpp #билд

В 2 раза ускорил компиляцию Unity на том же железе

Творите в Unity на Windows и страдаете от долгих компиляций? Инструкция как без вложений и разгона сократить время билда в 2 раза.

https://habr.com/ru/articles/1049556/

#unity #ryzen #xfs #webgl #ntfs #tmpfs #symlink #linux #il2cpp #билд

[$] The first half of the 7.2 merge window

The 7.2 merge window started with the 7.1 kernel release on June 14. As of this writing, just over 7,000 non-merge changesets have been pulled into the mainline for the next kerne [...]

https://lwn.net/Articles/1078068/ #LWN #Linux #kernel #LLVM #Clang #Rust #Git #XFS #BPF

[$] The first half of the 7.2 merge window

The 7.2 merge window started with the 7.1 kernel release on June 14. As of this writing, just over 7,000 non-merge changesets have been pulled into the mainline for the next kerne [...]

https://lwn.net/Articles/1078068/ #LWN #Linux #kernel #LLVM #Clang #Rust #Git #XFS #BPF

[$] An overlayfs update

In a shortened session in the filesystem track at the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit, Amir Goldstein gave an update on the overlayfs union filesy [...]

https://lwn.net/Articles/1077052/ #LWN #Linux #kernel #systemd #XFS #BPF

[$] An overlayfs update

In a shortened session in the filesystem track at the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit, Amir Goldstein gave an update on the overlayfs union filesy [...]

https://lwn.net/Articles/1077052/ #LWN #Linux #kernel #systemd #XFS #BPF

Buildroot 2026.05 released

https://lwn.net/Articles/1077379/ #LWN #Linux #kernel #XFS

Buildroot 2026.05 released

https://lwn.net/Articles/1077379/ #LWN #Linux #kernel #XFS

[$] An update on fanotify

In a filesystem-track session at the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit, Amir Goldstein updated attendees on the fanotify filesystem-event monitoring [...]

https://lwn.net/Articles/1075829/ #LWN #Linux #kernel #systemd #XFS #BPF #FUSE

[$] An update on fanotify

In a filesystem-track session at the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit, Amir Goldstein updated attendees on the fanotify filesystem-event monitoring [...]

https://lwn.net/Articles/1075829/ #LWN #Linux #kernel #systemd #XFS #BPF #FUSE

#SUZANNE #MASSIE multi-search-tag-explorer.aepiot.com/advanced-sea... #XFS semantic-search.aepiot.ro/advanced-sea... #FIRST #SINO #KAZAKH #WAR allgraph.ro/advanced-sea... #LIST OF #WINE #PRODUCING #REGIONS allgraph.ro?lang=en&q=LI... headlines-world.com

MultiSearch Tag Explorer

[$] Caching for extended attributes

Extended attributes (xattrs) provide a way to attach key/value metadata to inodes—files, directories, and the like—in a filesystem. As with many Linux filesystems, the FUSE filesy [...]

https://lwn.net/Articles/1074919/ #LWN #Linux #kernel #XFS #BPF #FUSE

[$] Caching for extended attributes

Extended attributes (xattrs) provide a way to attach key/value metadata to inodes—files, directories, and the like—in a filesystem. As with many Linux filesystems, the FUSE filesy [...]

https://lwn.net/Articles/1074919/ #LWN #Linux #kernel #XFS #BPF #FUSE

TIL: duperemove

A cli tool to take advantage of Linux's file-range deduplication feature (supported by xfs and btrfs). It can recursively find duplicate files and ask the kernel to dedup them.

https://markfasheh.github.io/duperemove/duperemove.html

#TIL #cli #linux #xfs #btrfs

TIL: duperemove

A cli tool to take advantage of Linux's file-range deduplication feature (supported by xfs and btrfs). It can recursively find duplicate files and ask the kernel to dedup them.

https://markfasheh.github.io/duperemove/duperemove.html

#TIL #cli #linux #xfs #btrfs

[$] Separating memory descriptors from struct page

The kernel's memory-management subsystem is currently partway through a multi-year project to replace the page structure (which represents a page of physical memory) with memory de [...]

https://lwn.net/Articles/1073425/ #LWN #Linux #kernel #XFS #BPF

[$] Separating memory descriptors from struct page

The kernel's memory-management subsystem is currently partway through a multi-year project to replace the page structure (which represents a page of physical memory) with memory de [...]

https://lwn.net/Articles/1073425/ #LWN #Linux #kernel #XFS #BPF

Linux 7.0 non è una rivoluzione rumorosa.
È il contrario: il "software lento" è quello che tiene in piedi il mondo.
Ne parlo qui:
https://marcoferrigno.net/linux-kernel-7-0-the-quiet-revolution-that-changes-everything/

#alpha #amd #epyc #infrastructure #kernel #kvm #linux #mldsa #opensource #postquantum #rust #security #sparc #xfs #zen5

Linux 7.0 non è una rivoluzione rumorosa.
È il contrario: il "software lento" è quello che tiene in piedi il mondo.
Ne parlo qui:
https://marcoferrigno.net/linux-kernel-7-0-the-quiet-revolution-that-changes-everything/

#alpha #amd #epyc #infrastructure #kernel #kvm #linux #mldsa #opensource #postquantum #rust #security #sparc #xfs #zen5

Have pushed 0.9.5-dev branch to codeberg of foxing ( https://codeberg.org/aenertia/foxing/src/branch/0.9.5-dev ) in preparation for release tagging. A LOT of features and a couple of bug-fixes now the packet/file processing engine has stabilized ; including Semantic Routing to Parsers for Metadata Extraction and in-path Binary analysis using local ORT/BERT models ; letting you get semantic search powers for free when you copy something with foxingd/fxcp #linux #filesystem #bert #vectordb #postgres #xfs #stratis #blake3 #localllm

Have pushed 0.9.5-dev branch to codeberg of foxing ( https://codeberg.org/aenertia/foxing/src/branch/0.9.5-dev ) in preparation for release tagging. A LOT of features and a couple of bug-fixes now the packet/file processing engine has stabilized ; including Semantic Routing to Parsers for Metadata Extraction and in-path Binary analysis using local ORT/BERT models ; letting you get semantic search powers for free when you copy something with foxingd/fxcp #linux #filesystem #bert #vectordb #postgres #xfs #stratis #blake3 #localllm

#Linux :tux: 7.0 erschienen – mehr als ein Nummernsprung | heise online https://www.heise.de/news/Linux-7-0-erschienen-mehr-als-ein-Nummernsprung-11255745.html #OpenSource #eBPF #Rust #SelfHealing #XFS #LinuxKernel

#Linux :tux: 7.0 erschienen – mehr als ein Nummernsprung | heise online https://www.heise.de/news/Linux-7-0-erschienen-mehr-als-ein-Nummernsprung-11255745.html #OpenSource #eBPF #Rust #SelfHealing #XFS #LinuxKernel

Linux 7.0 è ufficiale: più spazio a Rust, novità per XFS e regole per gli strumenti AI

https://yoota.it/linux-7-0-e-ufficiale-piu-spazio-a-rust-novita-per-xfs-e-regole-per-gli-strumenti-ai/

[$] Development statistics for the 7.0 kernel

Linus Torvalds released the 7.0 kernel as expected on April 12, ending a relatively busy development cycle. The 7.0 release brings a large number of interesting changes; see the L [...]

https://lwn.net/Articles/1066723/ #LWN #Linux #kernel #SUSE #RedHat #XFS

[$] Development statistics for the 7.0 kernel

Linus Torvalds released the 7.0 kernel as expected on April 12, ending a relatively busy development cycle. The 7.0 release brings a large number of interesting changes; see the L [...]

https://lwn.net/Articles/1066723/ #LWN #Linux #kernel #SUSE #RedHat #XFS

The 7.0 kernel has been released

https://lwn.net/Articles/1067279/ #LWN #Linux #kernel #Rust #Git #XFS #io_uring

[$] Removing read-only transparent huge pages for the page cache

Things do not always go the way kernel developers think they will. When the kernel gained support for the creation of read-only transparent huge pages for the page cache in 2019, [...]

https://lwn.net/Articles/1066582/ #LWN #Linux #kernel #Git #XFS #BPF

[$] Ubuntu's GRUBby plans

GNU GRUB 2, mostly just referred to as GRUB these days, is the most widely used boot loader for x86_64 Linux systems. It supports reading from a vast selection of filesystems, hand [...]

https://lwn.net/Articles/1065420/ #LWN #Linux #Debian #systemd #XFS

New article: Inside the XFS Filesystem.

It splits the disk into independent Allocation Groups so multiple cores can work in parallel without blocking each other.

XFS uses B+ trees for almost everything. Check it out here: https://internals-for-interns.com/posts/xfs-filesystem/

#XFS #Linux #Filesystems

Samba 4.24.0 released

https://lwn.net/Articles/1063517/ #LWN #Linux #SUSE #ArchLinux #XFS