Btrfs Adding Fast/Realtime ZSTD Compression and Other Performance Optimizations
(phoronix.com)
David Sterba of SUSE sent in all of the Btrfs file-system updates today for the now-open Linux 6.15 kernel merge window.
David Sterba of SUSE sent in all of the Btrfs file-system updates today for the now-open Linux 6.15 kernel merge window.
Understanding the FAT File System
(8dcc.github.io)
The FAT file system was originally developed by Microsoft for the MS-DOS operating system. I have been working on a FAT parsing tool for some days, and I wanted to explain some of the things I have learned.
The FAT file system was originally developed by Microsoft for the MS-DOS operating system. I have been working on a FAT parsing tool for some days, and I wanted to explain some of the things I have learned.
Fsync() after open() is an elaborate no-op
(despairlabs.com)
I have spent the last couple of years of my life trying to make sense of fsync() and bringing OpenZFS up to code. I’ve read a lot of horror stories about this apparently-simple syscall in that time, usually written by people who tried very hard to get it right but ended up losing data in different ways. I hesitate to say I enjoy reading these things, because they usually start with some catastrophic data loss situation and that’s just miserably unfair.
I have spent the last couple of years of my life trying to make sense of fsync() and bringing OpenZFS up to code. I’ve read a lot of horror stories about this apparently-simple syscall in that time, usually written by people who tried very hard to get it right but ended up losing data in different ways. I hesitate to say I enjoy reading these things, because they usually start with some catastrophic data loss situation and that’s just miserably unfair.
Time Trouble
(os2museum.com)
Last Friday I had a moment of panic. While investigating why different run-time libraries might interpret file timestamps differently, I noticed that even Windows doesn’t always agree with itself. When was dos4gw.exe last modified, at 10:14 PM or 9:14 PM?
Last Friday I had a moment of panic. While investigating why different run-time libraries might interpret file timestamps differently, I noticed that even Windows doesn’t always agree with itself. When was dos4gw.exe last modified, at 10:14 PM or 9:14 PM?
50 years in filesystems: 1974 – Die wunderbare Welt von Isotopp
(koehntopp.info)
Progress is sometimes hard to see, especially when you have been part of it or otherwise lived through it. Often, it is easier to see if you compare modern educational material, and the problems discussed with older material. And then look for the research papers and sources that fueled the change.
Progress is sometimes hard to see, especially when you have been part of it or otherwise lived through it. Often, it is easier to see if you compare modern educational material, and the problems discussed with older material. And then look for the research papers and sources that fueled the change.
How fast can you open 1000 files?
(lemire.me)
Jarred Sumner, the main author of the Bun JavaScript engine, commented a few days ago on X that opening many files on macOS could be slow due to thread contention: “your $5,000 computer is only capable of opening 1 file at a time”.
Jarred Sumner, the main author of the Bun JavaScript engine, commented a few days ago on X that opening many files on macOS could be slow due to thread contention: “your $5,000 computer is only capable of opening 1 file at a time”.
3FS – a parallel file system from DeepSeek
(twitter.com)
Something went wrong, but don’t fret — let’s give it another shot.
Something went wrong, but don’t fret — let’s give it another shot.
Hyperspace
(hypercritical.co)
My interest in file systems started when I discovered how type and creator codes1 and resource forks contributed to the fantastic user interface on my original Macintosh in 1984.
My interest in file systems started when I discovered how type and creator codes1 and resource forks contributed to the fantastic user interface on my original Macintosh in 1984.
Understanding Surrogate Pairs: Why Some Windows Filenames Can't Be Read
(zaferbalkan.com)
This time I am going to write about some odd behavior by Windows. The behavior is by design and there is no obvious security impact. Therefore, this article is written just for the sake of sharing some geeky content.
This time I am going to write about some odd behavior by Windows. The behavior is by design and there is no obvious security impact. Therefore, this article is written just for the sake of sharing some geeky content.
SystemV filesystem being removed from the Linux kernel
(phoronix.com)
The SystemV file-system that implements Xenix FS, SystemV/386 FS, and Coherent FS is set to be removed from the Linux kernel.
The SystemV file-system that implements Xenix FS, SystemV/386 FS, and Coherent FS is set to be removed from the Linux kernel.
Walking with filesystems: Go's fs.FS interface
(bitfieldconsulting.com)
The new io/fs package introduced in Go 1.16 gives us a powerful new way of working with filesystems: that is, trees of files. In fact, the fs.FS interface can be used with more than just files: it abstracts the idea of a path-value map.
The new io/fs package introduced in Go 1.16 gives us a powerful new way of working with filesystems: that is, trees of files. In fact, the fs.FS interface can be used with more than just files: it abstracts the idea of a path-value map.
Bcachefs Freezes Its On-Disk Format with Future Updates Optional
(phoronix.com)
The latest round of Bcachefs file-system fixes have been submitted today for the in-development Linux 6.14 kernel.
The latest round of Bcachefs file-system fixes have been submitted today for the in-development Linux 6.14 kernel.
Why writes to disk generally wind up in your OS's disk read cache
(utoronto.ca)
Recently, someone was surprised to find out that ZFS puts disk writes in its version of a disk (read) cache, the ARC ('Adaptive Replacement Cache'). In fact this is quite common, as almost every operating system and filesystem puts ordinary writes to disk into their disk (read) cache.
Recently, someone was surprised to find out that ZFS puts disk writes in its version of a disk (read) cache, the ARC ('Adaptive Replacement Cache'). In fact this is quite common, as almost every operating system and filesystem puts ordinary writes to disk into their disk (read) cache.
Show HN: Plik – a tiny FUSE filesystem with compression and deduplication
(sytes.net)
File system in user space (FUSE) with compression and deduplication. Written in a single C file (1K LOC). Uses OpenSSL for hashing, zlib for compression and SQLite for data storage.
File system in user space (FUSE) with compression and deduplication. Written in a single C file (1K LOC). Uses OpenSSL for hashing, zlib for compression and SQLite for data storage.
TMSU: Command-line tool for applying tags and viewing virtual tagged filesystem
(tmsu.org)
TMSU was born out of frustration with the hierarchical nature of filesystems
TMSU was born out of frustration with the hierarchical nature of filesystems
Migrating Away from Bcachefs
(sesse.net)
Pretty much exactly a year ago, I posted about how I was trying out this bcachefs thing, being cautiously optimistic (but reminding you to keep backups). Now I'm going the other way; I've converted my last bcachefs filesystem to XFS, and I don't intend to look at it again in the near future.
Pretty much exactly a year ago, I posted about how I was trying out this bcachefs thing, being cautiously optimistic (but reminding you to keep backups). Now I'm going the other way; I've converted my last bcachefs filesystem to XFS, and I don't intend to look at it again in the near future.
Migrating Away from Bcachefs
(sesse.net)
Pretty much exactly a year ago, I posted about how I was trying out this bcachefs thing, being cautiously optimistic (but reminding you to keep backups). Now I'm going the other way; I've converted my last bcachefs filesystem to XFS, and I don't intend to look at it again in the near future.
Pretty much exactly a year ago, I posted about how I was trying out this bcachefs thing, being cautiously optimistic (but reminding you to keep backups). Now I'm going the other way; I've converted my last bcachefs filesystem to XFS, and I don't intend to look at it again in the near future.
Migrating Away from Bcachefs
(sesse.net)
Pretty much exactly a year ago, I posted about how I was trying out this bcachefs thing, being cautiously optimistic (but reminding you to keep backups). Now I'm going the other way; I've converted my last bcachefs filesystem to XFS, and I don't intend to look at it again in the near future.
Pretty much exactly a year ago, I posted about how I was trying out this bcachefs thing, being cautiously optimistic (but reminding you to keep backups). Now I'm going the other way; I've converted my last bcachefs filesystem to XFS, and I don't intend to look at it again in the near future.
Home Loss File System
(docs.google.com)
This tool was created by former California wildfire survivors committed to supporting you through the challenging process of disaster recovery.
This tool was created by former California wildfire survivors committed to supporting you through the challenging process of disaster recovery.
Stupidfs: Hide files by storing them in the metadata of other files
(github.com/GoldenStack)
More files per file: hide files by storing them in the metadata of other files
More files per file: hide files by storing them in the metadata of other files
Fedora Stakeholders Have Been Debating Whether to Retire GlusterFS
(phoronix.com)
A discussion that originally started last summer has been reignited: whether it's time to retire GlusterFS within Fedora Linux.
A discussion that originally started last summer has been reignited: whether it's time to retire GlusterFS within Fedora Linux.
Show HN: Windows' ext4 filesystem accesibility by new Visual Studio 2022
(github.com/abdulbadii)
ext4fsd is ext2, ext3 and ext4 file system accessibility on Windows
ext4fsd is ext2, ext3 and ext4 file system accessibility on Windows
A gotcha with importing ZFS pools and NFS exports on Linux
(utoronto.ca)
Ever since its Solaris origins, ZFS has supported automatic NFS and CIFS sharing of ZFS filesystems through their 'sharenfs' and 'sharesmb' properties.
Ever since its Solaris origins, ZFS has supported automatic NFS and CIFS sharing of ZFS filesystems through their 'sharenfs' and 'sharesmb' properties.
XDG Base Directory Specification
(freedesktop.org)
Various specifications specify files and file formats. This specification defines where these files should be looked for by defining one or more base directories relative to which files should be located.
Various specifications specify files and file formats. This specification defines where these files should be looked for by defining one or more base directories relative to which files should be located.
Mount S3 like local file system for macOS
(mountos.app)
mountOS (mount Object Storage) allows seamless integration of S3-compatible cloud storage, making it accessible and usable as a file system
mountOS (mount Object Storage) allows seamless integration of S3-compatible cloud storage, making it accessible and usable as a file system