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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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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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Audiocasts/Shows: Linux in the Ham Shack and Linux Headlines

  • LHS Episode #302: The End of Kenwood

    Welcome to Episode 302 of Linux in the Ham Shack. In this short topic episode, the hosts discuss the potential end of Kenwood in the amateur radio market, emcom in Montucky, Storm Area 51, HF on satellites, a huge update for PulseAudio, the Linux 5.3 kernel and much more. Thank you for listening and have a fantastic week.

  • 09/19/2019 | Linux Headlines

    Fresh init system controversy at the Debian project, a more scalable Samba, and a big release for LLVM. Plus GitHub's latest security steps and a new version of OBS Studio.

Android Leftovers

When Diverse Network ASICs Meet A Unifying Operating System

And it has also been a decade since switch upstart Arista Networks launched its Extensible Operating System, or EOS, which is derived from Linux. [...] The cross-platform nature of ArcOS, coupled with its ability to run in any function on the network, could turn out to be the key differentiator. A lot of these other NOSes were point solutions that could only be deployed in certain parts of the network, and that just creates animosity with the incumbent vendors that dominate the rest of the networking stack. Given the mission-critical nature of networking in the modern datacenter, it costs a great deal to qualify a new network operating system, and it can take a lot of time. If ArcOS can run across more platforms, qualify faster, and do more jobs in the network, then, says Garg, it has a good chance of shaking up switching and routing. “That totally changes the business conversation and the TCO advantages that we can bring to a customer across the entirety of their network.” Read more

Server: Kubernetes/OpenShift, OpenStack, and Red Hat's Ansible

  • 9 steps to awesome with Kubernetes/OpenShift presented by Burr Sutter

    Burr Sutter gave a terrific talk in India in July, where he laid out the terms, systems and processes needed to setup Kubernetes for developers. This is an introductory presentation, which may be useful for your larger community of Kubernetes users once you’ve already setup User Provisioned Infrastructure (UPI) in Red Hat OpenShift for them, though it does go into the deeper details of actually running the a cluster. To follow along, Burr created an accompanying GitHub repository, so you too can learn how to setup an awesome Kubernetes cluster in just 9 steps.

  • Weaveworks Named a Top Kubernetes Contributor

    But anyone who knows the history of Weaveworks might not be too surprised by this. Weaveworks has been a major champion of Kubernetes since the very beginning. It might not be too much of a coincidence that Weaveworks was incorporated only a few weeks after Kubernetes was open sourced, five years ago. In addition to this, the very first elected chair of the CNCF’s Technical Oversight Committee, responsible for technical leadership to the Cloud Native Foundation was also headed up by our CEO, Alexis Richardson(@monadic) (soon to be replaced by the awesome Liz Rice (@lizrice) of Aqua Security).

  • Improving trust in the cloud with OpenStack and AMD SEV

    This post contains an exciting announcement, but first I need to provide some context! Ever heard that joke “the cloud is just someone else’s computer”? Of course it’s a gross over-simplification, but there’s more than a grain of truth in it. And that raises the question: if your applications are running in someone else’s data-centre, how can you trust that they’re not being snooped upon, or worse, invasively tampered with?

  • Red Hat OpenStack Platform 15 Enhances Infrastructure Security and Cloud-Native Integration Across the Open Hybrid Cloud

    Red Hat, Inc., the world's leading provider of open source solutions, today announced the general availability of Red Hat OpenStack Platform 15, the latest version of its highly scalable and agile cloud Infrastructure-as-a-Service (IaaS) solution. Based on the OpenStack community’s "Stein" release, Red Hat OpenStack Platform 15 adds performance and cloud security enhancements and expands the platform’s ecosystem of supported hardware, helping IT organizations to more quickly and more securely support demanding production workloads. Given the role of Linux as the foundation for hybrid cloud, customers can also benefit from a more secure, flexible and intelligent Linux operating system underpinning their private cloud deployments with Red Hat Enterprise Linux 8.

  • Red Hat Ansible Automation Accelerates Past Major Adoption Milestone, Now Manages More Than Four Million Customer Systems Worldwide

    Red Hat, Inc., the world's leading provider of open source solutions, today announced that more than four million customer systems worldwide are now automated by Red Hat Ansible Automation. Customers, including Energy Market Company, Microsoft, Reserve Bank of New Zealand and Surescripts all use Red Hat Ansible Automation to automate and orchestrate their IT operations, helping to expand automation across IT stacks. According to a blog post by Chris Gardner with Forrester Research, who was the author of The Forrester Wave™: Infrastructure Automation Platforms, Q3 2019, "Infrastructure automation isn’t just on-premises or the cloud. It’s at the edge and everywhere in between."1 Since its launch in 2013, Red Hat Ansible Automation has provided a single tool to help organizations automate across IT operations and development, including infrastructure, networks, cloud, security and beyond.