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Reiser

Reiser4 Brought To The Linux 5.0 Kernel

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Reiser

For those still using the out-of-tree Reiser4 file-system, it may be about time to consider alternatives like Btrfs, XFS, ZFS On Linux, F2FS, or even the likes of Stratis and Bcachefs. But should you still be using this once promising file-system, the out-of-tree patches have been revised to now work with the Linux 5.0 kernel.

There still is no trajectory for Reiser4 to the mainline Linux kernel with no major companies or other stakeholders backing Reiser4 but just a small group of developers and enthusiasts left working on this successor to ReiserFS. With the latest code posted on Friday by former Namesys developer Edward Shishkin, the Reiser4 kernel driver has been re-based to the Linux 5.0 kernel but with no other changes to the file-system noted.

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Reiser4 File-System Benchmarks With Linux 4.17

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Graphics/Benchmarks
Linux
Reiser

It's been about three years since last carrying out any file-system performance benchmarks of Reiser4, but being curious how it stacks up against the current state of today's mainline Linux file-systems, here are some fresh performance tests of Reiser4 using the Linux 4.17 kernel. The Reiser4 performance was compared to Reiserfs, EXT4, Btrfs, XFS, and F2FS.

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Reiser4 Updated For Linux 4.14 & Introduces Zstd Compression Support

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Reiser

The out-of-tree Reiser4 file-system driver has been updated with compatibility for the latest Linux 4.14 stable series. Besides reworking the code to run on Linux 4.14, this controversial file-system has also added support for Zstd file-system compression.

Linux 4.14 introduced Zstd support in the mainline kernel and wired it in for SquashFS and Btrfs. Our Btrfs Zstd benchmarks have been promising for transparent file-system compression compared to the other supported algorithms. Reiser4 has now picked up Zstd compression as an eventual replacement to their Gzip compression support.

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Reiser4 Is Now Ready For Linux 4.13

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Reiser

For those wanting to use the Reiser4 file-system with the just-released Linux 4.13 kernel, patches are already available.

Less than one week after the release of the Linux 4.13 stable kernel, Edward Shishkin has already released an updated patch for the out-of-tree Reiser4 file-system for working with this new stable series.

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Reiser4 Updated For Linux 4.12, Experimental Data Striping Support

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Reiser

Those using the Reiser4 file-system in some capacity can now safely upgrade to the Linux 4.12 kernel.

Edward Shishkin has updated this out-of-tree file-system for the Linux 4.12 kernel so it can be built with the latest mainline stable release.

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Reiser4 Updated For The Linux 4.10 Kernel

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Reiser

The out-of-tree Reiser4 file-system has been updated for the Linux 4.10 kernel.

Reiser4 for the Linux 4.10.0 kernel is available as of earlier this week, managing to release their updated file-system driver code quite promptly. This port to Linux 4.10 yielded a few changes to the Reiser4 code as they re-based to this Linux kernel with the ->readlink() of inode operations being removed as well as the WRITE_FLUSH_FUA flag being removed.

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Reiser4 Is Now Available For Linux 4.9, Mirror Code Almost Stable

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Reiser

For those that haven't yet switched to Btrfs, ZFS On Linux, or running EXT4/XFS but holding out hope for Reiser4, this out-of-tree file-system code has been updated for Linux 4.9.

Reiser4 was released for Linux 4.9.0 last weekend but then a revised patch series came out three days ago to fix some problems with this port to 4.9. With the new Reiser4 patches built against Linux 4.9.1, all should be well if you want to use this experimental file-system on the newest Linux kernel.

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Reiser4 Now Available For Linux 4.8 Kernel

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Reiser

While Linux 4.9 will be released in just a few weeks, the remaining Reiser4 file-system developers have just updated their code to support the Linux 4.8 stable kernel.

Reiser4 for Linux 4.8.0 is now available for those wanting to run this out-of-tree file-system on the current stable kernel. The Reiser4 kernel is now compatible with 4.8 and there is also a kernel oops fix when mounting forward-incompatible volumes, unneeded assertions were removed, some VFS changes were made, and there is now rename2 support.

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Reiser4 Implements Mirror & Failover Support

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Reiser

Edward Shishkin, one of the last remaining Reiser4 developers and the one who has been leading this out-of-tree file-system the past few years, has implemented logical volumes support with support for mirrors (in effect, RAID 0) and failover support at the file-system level.

Shishkin quietly announced on Sunday, "Reiser4 will support logical (compound) volumes. For now we have implemented the simplest ones - mirrors. As a supplement to existing checksums it will provide a failover - an important feature, which will reduce number of cases when your volume needs to be repaired by fsck."

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Reiser4 Now Has Support For The Linux 4.7 Kernel

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The Reiser4 file-system now has support for the latest stable Linux kernel series, Linux 4.7.

Released this morning by Edward Shishkin was the updated Reiser4 file-system driver patch that provides compatibility for Linux 4.7.0. The only other change besides porting over to Linux 4.7 is a small returned optimization.

There's been no talk in a few years about attempting to mainline the Reiser4 file-system in the Linux kernel. Thus for now if you want to try out this once-promising file-system, swing by SourceForge to patch your kernel.

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today's leftovers

  • Required update to recent libarchive

    The compression algorithm zstd brings faster compression and decompression, while maintaining a compression ratio comparable with xz. This will speed up package installation with pacman, without further drawbacks. The imminent release of pacman 5.2 brings build tools with support for compressing packages with zstd. To install these packages you need libarchive with support for zstd, which entered the repositories in September 2018. In order for zstd compressed packages to be distributed, we require all users to have updated to at least libarchive 3.3.3-1. You have had a year, so we expect you already did update. Hurry up if you have not.

  • openSUSE to have Summit in Dublin

    The openSUSE Community is going to Ireland March 27 and 28, 2020, for openSUSE Summit Dublin. Registration for the summit has begun and the Call for Papers is open until Feb. 14. The summit will begin at the end of SUSE’s premier annual global technical conference SUSECON. Partners of openSUSE, open-source community projects and community members are encouraged to register for the summit and submit a talk. The schedule for the openSUSE Summit Dublin will be posted on Feb. 17.

  • Khronos Opens Door For Allowing More Open-Source Drivers To Reach Conformance Status

    Khronos president Neil Trevett was at this month's XDC2019 conference in Montreal and he clarified their position on accepting conformance submissions by the open-source drivers. He clarified that any of the open-source driver projects working on a conformant implementation for OpenGL / OpenCL / Vulkan can indeed submit to Khronos without paying any vendor fees, etc. That includes all drivers, just not those part of (or not) Khronos Group members.

  • TURNIP Vulkan Driver Gets MSAA Working

    Mesa's TURNIP Vulkan driver that provides open-source Vulkan API support for Qualcomm Adreno hardware in recent weeks has been back to seeing new activity and this week more useful contributions are being made. On Tuesday a number of TURNIP commits were made by Jonathan Marek as well as Eric Anholt. The latest work includes a number of fixes, adding the ASTC texture compression format layout, VK_KHR_sampler_mirror_clamp_to_edge, and ultimately getting basic MSAA working. The multi-sample anti-aliasing support for this open-source TURNIP driver for Adreno graphics has been described as "not perfect but gets through some tests."

Proprietary Software Leftovers

  • Google launches the $649 Pixelbook Go Chromebook

    At its annual hardware event, Google today announced the launch of the Pixelbook Go, the latest iteration of its first-party Chromebook lineup. Starting at $649, the Pixelbook Go marks a return to the standard laptop format after last year’s Pixelbook with a 180-degree hinge and the Pixel Slate 2-in-1. The Go will come with a 16:9 13.3-inch touch screen and either an HD or 4K display, two USB-C ports, a built-in Titan-C security chip, up to 16GB of RAM and up to 256GB of storage. It’s powered by Intel Core CPUs, starting with an m3 chip at the low end and an i7 at the top end. Available colors are black and “not pink” and pre-orders start now, but only for the black version. “Not pink” is coming soon.

  • BGH Capital backs major new cyber security player

    Former national cyber security adviser Alastair MacGibbon and former Optus Business managing director John Paitaridis joined forces to create the country's largest pure cyber security company, with 400 staff and backing from private equity firm BGH Capital.

    Led by Mr Paitaridis, CyberCX brings together 12 niche cyber security players to form one large company.

  • Malware That Spits Cash Out of ATMs Has Spread Across the World [iophk: Windows TCO]

    Part of the security issue for ATMs is that many of them are, in essence, aged Windows computers.

  • Migration Complete – Amazon’s Consumer Business Just Turned off its Final Oracle Database

    We migrated 75 petabytes of internal data stored in nearly 7,500 Oracle databases to multiple AWS database services including Amazon DynamoDB, Amazon Aurora, Amazon Relational Database Service (RDS), and Amazon Redshift. The migrations were accomplished with little or no downtime, and covered 100% of our proprietary systems. This includes complex purchasing, catalog management, order fulfillment, accounting, and video streaming workloads. We kept careful track of the costs and the performance, and realized the following results: [...]

Open Hardware: DS3231 and CHIPS Alliance

  • i2c clock : DS3231

    Like any clock, the DS3231 must be set at the 1st start. The registers listed in Figure 4 are accessible for reading and writing. This allows us to program the exact time and date at the time of initialization. Then the DS3231 operates autonomously, with leap years up to 2100 ;-) To compensate for the power failure, a CR1220 battery can be added to the back of the Adafruit ADA3013.

  • CHIPS Alliance Growth Continues With New Members and Design Workshop this November
  • CHIPS Alliance growth continues with new members and design workshop this November

    CHIPS Alliance, the leading consortium advancing common, open hardware for interfaces, processors and systems, today announced Codasip GmbH and Munich University of Applied Science have joined the CHIPS Alliance. In addition, on November 14–15, CHIPS Alliance will be joining the university for a workshop on open source design verification. CHIPS Alliance is a project hosted by the Linux Foundation to foster a collaborative environment to accelerate the creation and deployment of open SoCs, peripherals and software tools for use in mobile, computing, consumer electronics, and Internet of Things (IoT) applications. The CHIPS Alliance project develops high-quality open source Register Transfer Level (RTL) code relevant to the design of open source CPUs, RISC-V-based SoCs, and complex peripherals for Field Programmable Gate Arrays (FPGAs) and custom silicon. Codasip is a leading supplier of configurable RISC-V® embedded processor IP. Codasip provides a portfolio of various RISC-V implementations along with a suite of processor developers tools to allow for rapid core customization, and will contribute to working groups on verification platforms and open cores. “Codasip has years of processor development experience and has shown its dedication to open platforms by its contributions to open source compiler and compliance projects. We welcome their participation in the CHIPS Alliance to facilitate the adoption of open architectures,” said Zvonimir Bandić, senior director of next-generation platforms architecture at Western Digital and Chairman, CHIPS Alliance.

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