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Reiser

Reiser4 Implements Mirror & Failover Support

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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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Linux Filesystems

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Movies
  • My assessment of “btrfs”

    In short: Novelist Stephen Elliott (James Franco) find himself drawn to the high-profile Hans Reiser (Christian Slater) murder trial - a case that brings him closer to his own troubled past with father (Ed Harris). Amber Heard, Wilmer Valderrama and Cynthia Nixon also star. (Watch the trailer)

  • The Adderall Diaries

    While Romanowsky gamely tries to negotiate the same structural tricks as the book, which employed the Reiser case as a base camp from which the author could depart and return, in the film it feels more like a subplot despite the cinematic tricks -- the cross-cutting and slo-mo flashbacks -- that the director uses to try to connect the stories. At times it feels flat, other times risible, and only occasionally do the stories resonate in any kind of harmony.

  • My assessment of “btrfs”

    Short version — I will continue to use “ext4” in future installs.

    Note that this a personal view, not a recommendation. My own choice depends on how I use computers and my practices for backup, recovery, etc. Your practices are likely different. Much of this post will be about my considerations in deciding against “btrfs” for my own use.

[via Susan]

Reiser4 Now Available For Linux 4.5 Kernel

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The Reiser4 file-system has been updated with support for the Linux 4.5 kernel.

Edward Shishkin, the main Reiser4 developer left working on this out-of-tree file-system, today spun the Reiser4 patches for the Linux 4.5 kernel that also includes a few fixes/changes for satisfying the kernel and compiler. Aside from that, there's nothing new to report today with regard to new Reiser4 file-system features nor any new attempt to try to mainline this file-system code.

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Reiser4 Updated For Linux 3.16 With SSD Discard Support

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While Reiser4 doesn't still have any mainline Linux kernel ambitions until receiving any corporate backing, the notoriously known Linux file-system has been updated for Linux 3.16 compatibility and SSD discard support.

Over the weekend the Reiser4 file-system patches were updated for Linux 3.16.1/3.16.2 kernel support and additionally for presenting SSD discard support for the long-in-development Linux FS. This latest Reiser4 file-system work was done by Ivan Shapovalov and Edward Shishkin.

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Reiser4 Now Available for the 3.15 kernel, so what?

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Reiser

A recent announcement was made stating that the Reiser4 file system, successor to the ReiserFS, was ported to the 3.15 Linux kernel. Following the 2006 conviction and incarceration of the mastermind that original conceived this project (Hans Reiser), a few dedicated developers continued supporting this file system despite the odds stacked against them. In the last decade, the Linux kernel has seen newer file systems, most of which are integrated into the mainline kernel tree (i.e. btrfs, ext4, etc.). Reiser4 was rejected for inclusion some time back, and most of its developers moved on (one or more of which are currently working on btrfs).

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Reiser4 Now Available For Linux 3.15

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While the Linux 3.16 kernel is now stable, a few days ago the Reiser4 file-system was finally ported to Linux 3.15.

Edward Shishkin released Reiser4 for the Linux 3.15.1 kernel last weekend. Besides being ported to the kernel interface changes for Linux 3.15, there's also two bug-fixes for the out-of-tree file-system. Most of the Reiser4 activity these days continues to just be porting to new kernel versions and bug-fixing. Edward is down to being one of the only main developers left and there's expected to be no effort to mainline the controversial file-system without the support of a major Linux ISV/IHV.

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Reiser4 File-System SSD "Discard" Support Gets Revised

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Ivan Shapovalov is back on track with his Reiser4 file-system contributions.

Shapovalov has been working on Reiser4 support for TRIM/Discard on SSDs. It's been some weeks since the last revision but the fourth version of the patches are now out there for this common file-system feature of being able to discard blocks by informing the solid-state drive about blocks that are no longer in use by the file-system. Most mainline Linux file-systems already support SSD discard, which is generally exposed via the discard mount option -- which is also the case for Reiser4.

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Reiser4 Updated With Transaction Models, Linux 3.14

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Reiser4 now has support for different transaction models. Reiser4 can now change between transaction models with regard to a journalling mode, a write-anywhere / copy-on-write model, and a hybrid transaction model.

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Reiser4: Different Transaction Models

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Reiser4 users now can choose a transaction model which is most suitable for their devices. This is very simple: just specify it by respective mount option. With the patch applied you will have 3 options.

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More in Tux Machines

Red Hat and Fedora

  • Red Hat, Logicalis in digital transformation partnership in Latin America
    PromonLogicalis, a provider of information technology and communication solutions and services in Latin America, and Red Hat, Inc. (NYSE: RHT), the world's leading provider of open source solutions, announced a collaboration that aim to help organizations navigate the digital transformation of their infrastructures to pave the way for cloud and the software-defined technologies, and to advance open source technology awareness in the region. Open source is delivering significant advancements in many areas of technology through community-powered innovation, including cloud computing, mobile, big data, and more. And, as companies embrace modern technology as a competitive advantage via digital transformation efforts, many are turning to open source because of the flexibility and agility it can enable.
  • Red Hat Inc. (RHT) Downgraded by Zacks Investment Research to “Hold”
  • An Easy Way To Try Intel & RADV Vulkan Drivers On Fedora 24
    Fedora 25 should have good support for the open-source Vulkan Linux drivers (particularly if it lands the next Mesa release) while Fedora 24 users can now more easily play with the latest Mesa Git RADV and Intel ANV Vulkan drivers via a new repository. A Phoronix reader has setup a Fedora Copr repository that is building Intel's Vulkan driver from Mesa Git plus the RADV Radeon Vulkan driver re-based from its source (David Airlie's semi-interesting GitHub branch). Fedora COPR, for the uninformed, is the distribution's equivalent to Ubuntu PPA repositories.
  • Meeting users, lots of users
    Every year, I introduce Fedora to new students at Brno Technical University. There are approx. 500 of them and a sizable amount of them then installs Fedora. We also organize a sort of installfest one week after the presentation where anyone who has had any difficulties with Fedora can come and ask for help. It’s a great opportunity to observe what things new users struggle with the most. Especially when you have such a high number of new users. What are my observations this year?

Linux Devices

  • 96Boards SBCs host Intel Joule and Curie IoT modules
    Gumstix announced two SBCs this week, based on Intel Joule and Curie IoT modules and built to 96Boards CE and IE form-factor specifications, respectively. At Linaro Connect Las Vegas 2016, where earlier this week Linaro’s 96Boards.org announced a new 96Boards IoT Edition (IE) spec, Gumstix announced support for 96Boards.org’s open SBC standards with two new single-board computers. Both SBCs will be available for purchase in October.
  • ORWL — First Open Source And Physically Secure PC, Runs Linux And Windows
    ORWL is the first open source, physically secure computer. Using a secure microcontroller (MCU) and an ‘active clamshell mesh’, the device makes sure that nobody breaks the security of the system. Its maker, Design Shift, has also launched a crowdfunding campaign on Crowd Supply.
  • Purism Is Still Hoping To Build A GNU/Linux Free Software Librem Smartphone
    Purism, the startup behind the Librem laptops with a focus on free software and user privacy/freedom, still has their minds set on coming up with a GNU/Linux smartphone. Purism continues selling their high-priced laptops and their Librem 11 is forthcoming as an Intel-based tablet/convertible device with stocking station. Next on their horizon they want to produce "the ideal no-carrier, Free Software phone running a bona fide GNU+Linux stack."

Leftovers: OSS

  • Asterisk 14 Improves Open-Source VoIP
    Digium, the lead commercial sponsor behind the Asterisk open source PBX project announced the release Asterisk 14 this week, continuing to evolve the decade old effort, making it easier to use and deploy.
  • Yahoo open-sources a deep learning model for classifying pornographic images
    Yahoo today announced its latest open-source release: a model that can figure out if images are specifically pornographic in nature. The system uses a type of artificial intelligence called deep learning, which involves training artificial neural networks on lots of data (like dirty images) and getting them to make inferences about new data. The model that’s now available on GitHub under a BSD 2-Clause license comes pre-trained, so users only have to fine-tune it if they so choose. The model works with the widely used Caffe open source deep learning framework. The team trained the model using its now open source CaffeOnSpark system. The new model could be interesting to look at for developers maintaining applications like Instagram and Pinterest that are keen to minimize smut. Search engine operators like Google and Microsoft might also want to check out what’s under the hood here. “To the best of our knowledge, there is no open source model or algorithm for identifying NSFW images,” Yahoo research engineer Jay Mahadeokar and senior director of product management Gerry Pesavento wrote in a blog post.
  • Cloudera, Hortonworks, and Uber to Keynote at Apache Big Data and ApacheCon Europe
  • Vendors Pile on Big Data News at Strata
    Cloudera, Pentaho and Alation are among vendors making Big Data announcements at this week's Strata event. Vendors big and small are making news at this week's Strata + Hadoop event as they try to expand their portion of the Big Data market. Cloudera highlighted a trio of Apache Software Foundation (ASF) projects to which it contributes. Among them is Spark 2.0, which benefits from a new Dataset API that offers the promise of better usability and performance as well as new machine learning libraries.
  • New alliances focus on open-source, data science empowerment
    How can data science make a true market impact? Partnerships, particularly amongst open source communities. As IBM solidifies its enterprise strategies around data demands, two new partnerships emerge: one with Continuum Analytics, Inc., advancing open-source analytics for the enterprise; and another with Galvanize, initiating a Data Science for Executives program. Continuum Analytics, the creator and driving force behind Anaconda — a leading open data science platform powered by Python — has allied with IBM to advance open-source analytics for the enterprise. Data scientists and data engineers in open-source communities can now embrace Python and R to develop analytic and machine learning models in the Spark environment through its integration with IBM’s DataWorks Project. The new agreement between IBM and Galvanize, which provides a dynamic learning community for technology, will offer an assessment, analysis and training element for Galvanize’s Data Science for Executives program. This program empowers corporations to better understand, use and maximize the value of their data. The program will support IBM’s DataFirst Method, a methodology that IBM says provides the strategy, expertise and game plan to help ensure enterprise customers’ succeed on their journey to become a data-driven business.
  • Apache Spot: open source big data analytics for cyber
  • Chinese open source blockchain startup Antshares raises $4.5M through crowdsourcing [Ed: Microsoft-connected]
  • August and September 2016: photos from Pittsburgh and Fresno
  • Libre Learn Lab: a summit on freely licensed resources for education
    Libre Learn Lab is a two-day summit for people who create, use and implement freely licensed resources for K-12 education, bringing together educators, policy experts, software developers, hardware hackers, and activists to share best practices and address the challenges of widespread adoption of these resources in education. The 2nd biennial conference is Saturday, October 8th, and Sunday, October 9th, at the MIT Tang Center. The keynote addresses will be delivered by the FSF’s own Richard M. Stallman, former Chief Open Education Advisor Andrew Marcinek and founder of HacKIDemia Stefania Druga. At the event, there will be a special tribute to Dr. Seymour Papert (the father of educational computing) by Dr. Cynthia Solomon.

Security Leftovers

  • Friday's security advisories
  • ICANN grinds forward on crucial DNS root zone signing key update
    The Internet Corporation for Assigned Names and Numbers is moving -- carefully -- to upgrade the DNS root zone key by which all domains can be authenticated under the DNS Security Extensions protocol. ICANN is the organization responsible for managing the Domain Name System, and DNS Security Extensions (DNSSEC) authenticates DNS responses, preventing man-in-the-middle attacks in which the attacker hijacks legitimate domain resolution requests and replaces them with fraudulent domain addresses. DNSSEC still relies on the original DNS root zone key generated in 2010. That 1024-bit RSA key is scheduled to be replaced with a 2048-bit RSA key next October. Although experts are split over the effectiveness of DNSSEC, the update of the current root zone key signing key (KSK) is long overdue.
  • Cybersecurity isn't an IT problem, it's a business problem
    The emergence of the CISO is a relatively recent phenomenon at many companies. Their success often relies upon educating the business from the ground up. In the process, companies become a lot better about how to handle security and certainly learn how not to handle it. As a CIO, knowing the pulse of security is critical. I oversee a monthly technology steering committee that all the executives attend. The CISO reports during this meeting on the state of the security program. He also does an excellent job of putting risk metrics out there, color coded by red, yellow, and green. This kind of color grading allows us to focus attention on where we are and what we’re doing about it.