Language Selection

English French German Italian Portuguese Spanish

Reiser

Awkward History of Linux and Latest of Reiser5

Filed under
Linux
Reiser
  • Linux in 2020 [Ed: This is clearly conflating the kernel (Linux) with GNU, which predates it by almost one decade. It also perpetuates the myth that only Ubuntu brought GNU/Linux to the masses.]

    Hello. Today I would like to share with you, my perspective of Linux. Please take note that this is all my opinions and the way I see it. If you feel that I missed something very important or have a fact or two wrong, please let me know.

    So Linux was announced for the first time, on the 25 of August 1991 by a Finnish student, called Linus Torvalds. Little did he know, and the world knows that 30 years later the world would be using it on a daily basis.

    So From 1991, Linux has been maturing several Linux Distros (operating systems) came and went away, with a few of the first ones still around today. But it was mainly/only for those who are computer "geeks" and not for everyday users. But that all changed in October 2004, when the first version of Ubuntu was released.

  • Reiser5 Logical Volume Management - Updates
      Reiser5 Logical Volume Management - Updates
    
    
    I am happy to inform, that Logical Volumes stuff has become more
    stable. Also we introduce the following changes, which make logical
    volumes administration more flexible and simple:
    
    
                      1. No balancing by default
    
    
    Now all volume operations except brick removal don't invoke balancing
    by default. Instead, they mark volume as "unbalanced". To complete any
    operation with balancing specify option -B (--with-balance), or run
    volume.reiser4(8) utility with the option -b (--balance) later.
    
    This allows to speed up more than one operations over logical volume
    being performed at once. For example, if you want to add more than one
    brick to your volume at once, first add all the bricks, then run
    balancing. There is no need to balance a volume between the addition
    operations.
    
    
                        2. Removal completion
    
    
    Operation of brick removal always includes balancing procedure as its
    part. This procedure moves out all data block from the brick to be
    removed to remaining bricks of the volume. Thus, brick removal is
    usually a long operation, which may be interrupted for various reasons
    In such cases the volume is automatically marked with an "incomplete
    removal" flag.
    
    It is not allowed to perform essential volume operations on a volume
    marked as "with incomplete removal": first, user should complete
    removal by running volume.reiser4 utility with option
    -R (--finish-removal). Otherwise, the operation will return error
    (-EBUSY).
    
    There is no other restrictions: you are allowed to add a brick to
    unbalanced volume, and even remove a brick from an unbalanced volume
    (assuming it is not incomplete removal).
    
    Comment. "--finish-removal" is a temporary option. In the future the
    file system will detect incomplete removal and automatically perform
    removal completion by itself.
    
    
                    3. Balancing is always defined
    
    
    Operation of volume balancing (regardless of its balanced status) is
    always defined, and can be launched at any moment. If the volume is
    balanced, then the balancing procedure just scans the volume without
    any useful work.
    
    It is allowed to run more than one balancing threads on the same
    volume, however currently it will be inefficient: other threads will
    be always going after the single leader without doing useful work.
    Efficient volume balancing by many threads (true parallelism) is not a
    trivial task. We estimate its complexity as 2/5.
    
    
              4. Restore regular distribution on the volume
    
    
    Custom (defined by user) file migration can break fairness of data
    distribution among the bricks. To restore regular (fair) distribution
    on the volume, run volume.reiser4 utility with the option -S
    (--restore-regular). It launches a balancing procedure, which performs
    mandatory data migration of all files (including the ones marked as
    "immobile") in accordance with regular distribution policy on the
    volume. Moreover, when the balancing procedure encounters a file
    marked as "immobile", its "immobile" flag is cleared up.
    
    
                             5. How to test
    
    
    The new functionality is available starting with the kernel patch
    reiser4-for-linux-5.10-rc3 and reiser4progs-2.0.4 (Software Framework
    Release number of both is 5.1.3).
    
  • Reiser5 Stabilizing Its Logical Volume Functionality - Phoronix

    This New Year's Eve will mark one year since the announcement of the in-development Reiser5 file-system. While the outlook for getting Reiser5 upstreamed into the mainline kernel remains murky given the out-of-tree status of Reiser4, Edward Shishkin does continue advancing this latest Reiser file-system iteration.

    Since last year's initial Reiser5 announcement, more features continue to be ironed out for this evolution of Reiser4. The latest Reiser5 functionality hitting a point of stability is its logical volume management.

Reiser4/Reiser5 Updated For Linux 5.8

Filed under
Reiser

Edward Shishkin continues pushing ahead with not only maintaining the existing out-of-tree Reiser4 file-system code but also developing Reiser5 seemingly without any major corporate support. Reiser4 and the experimental Reiser5 file-system code were updated on Monday for Linux 5.8 kernel compatibility.

The Reiser4 kernel driver along with the unstable Reiser5 kernel code saw new patch releases for supporting them on the Linux 5.8 stable kernel (Linux 5.8.1 target to be exact).

Read more

Reiser4/Reiser5 Updated For Linux 5.7 Kernel Compatibility

Filed under
Reiser

It was just over a week ago that Reiser4 was updated for Linux 5.6 support while now it's been updated for the newly-minted Linux 5.7 stable kernel along with updating the experimental Reiser5 file-system for this latest kernel series.

Uploaded today by Edward Shishkin was Reiser4 for Linux 5.7.1. Though given the minimal changes with 5.7.1 compared to last week's 5.7 release, the patch presumably should apply cleanly there as well. There are no reports of any other functional Reiser4 changes besides re-basing to the new kernel series.

Read more

Reiser5 Updates For Linux 5.5 Along With Reiser4

Filed under
Reiser

The out-of-tree Reiser4 and Reiser5 (Reiser4 v5) patches have been updated against the recently stabilized Linux 5.5 kernel.

Main Reiser4 developer Edward Shishkin re-based the Reiser4 file-system patch against Linux 5.5.1 along with the experimental Reiser5.

At the end of 2019 is when Shishkin announced Reiser5 file-system development with introducing the concepts of local volumes capable of parallel scaling out and other key iterations over the current Reiser4 design.

Read more

Reiser4 File-System Is Still Ticking In 2019 - Now Updated For Linux 5.3 Compatibility

Filed under
Linux
Reiser

Edward Shishkin continues near single-handedly maintaining the out-of-tree Reiser4 code that at this point still has no apparent trajectory towards mainline. The former Namesys developer previously indicated it's unlikely to see Reiser4 merged unless there is a company backing it to get it through the review process for merging into mainline. While Reiser4 was quite promising for its early time, it's only getting more difficult with Reiser4 effectively stagnating for years now while SUSE/openSUSE continues backing Btrfs, Ubuntu increasingly investing in ZFS support, Red Hat developing Stratis, XFS continuing to be advanced by Red Hat and others as well, Google continuing to invest in the likes of EXT4/F2FS, and there also being Bcachefs and other open-source storage solutions that are more promising than Reiser4 in 2019. Nevertheless, the out-of-tree kernel patches continue to be updated.

Read more

Reiser4 Brought To The Linux 5.0 Kernel

Filed under
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.

Read more

Reiser4 File-System Benchmarks With Linux 4.17

Filed under
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.

Read more

Reiser4 Updated For Linux 4.14 & Introduces Zstd Compression Support

Filed under
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.

Read more

Reiser4 Is Now Ready For Linux 4.13

Filed under
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.

Read more

Reiser4 Updated For Linux 4.12, Experimental Data Striping Support

Filed under
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.

Read more

Syndicate content

More in Tux Machines

The Spectre Mitigation Performance Impact On AMD Ryzen 5000 "Zen 3" Processors

For those wondering what the current cost is to the default Spectre mitigation protections on the new AMD Ryzen 5000 series "Zen 3" processors, here are a set of performance tests looking at that overhead with the still relevant mitigations applied by default and then if forcing them off. The Zen 3 mitigation overhead was compared then to similar AMD Zen 2 and Zen+ processors. After looking last week at the odd state of mitigation performance on Intel's new Tiger Lake processors, the attention shifted to looking at the mitigation overhead for the new AMD Zen 3 processors. Thankfully there is less mitigations to worry about with AMD processors but still even with these new processors there is still a measurable difference in affected workloads between mitigations on and off. Also, unlike Tiger Lake and contrary to rumors, the Zen 3 mitigation performance was in the right direction: disabling the mitigations did help boost the performance as is logical, unlike what we saw with Tiger Lake where now disabling the mitigations hurt the overall performance. Read more

Open source predictions for 2021

When I think of open source and 2021, a Saga song comes to mind: "On The Loose." I believe no one can stop open source in the coming year--that's how big it's going to get. That's saying something, given how enterprise businesses already depend on open source technology on a daily basis. The dependency we're currently experiencing is nothing compared to what I predict for the coming year. Of course, it's not just about business, as I have one rather bold prediction for consumers as well. What are these predictions? Let me warm up my crystal ball, dim the lights, drop the needle on some music to create the perfect ambiance, and gaze deep into the waters of the future. Read more

today's howtos

  • How to Install Wiki.js on CentOS 8 - RoseHosting

    Wiki.js is a free and open-source wiki application written in Node.js. It is simple, lightweight, and uses Markdown files to saves all contents. You can save your content directly to the Markdown file and sync it with your Git repository. It offers a rich set of features including, integrated access control, a built-in search engine, and supports external authentication.

  • How to install FreeCAD on Linux Mint 20 - YouTube

    In this video, we are looking at how to install FreeCAD on Linux Mint 20.

  • How to optimize the apt package manager on Debian-based Linux distributions - TechRepublic

    There are a number of ways Linux is superior to other operating systems. Not only is Linux more reliable and stable, it’s more secure and user-friendly (in more areas than you might believe). But above everything else, one of the most amazing things about Linux is it’s flexibility. You’d be hard-pressed to find a distribution of Linux that insists you do it one way and only one way (which is the case with Windows and macOS).

  • Image Noise Reduction By Image Stacking/Blending

    Simply put, it is a way to use multiple photos of an image to reduce the noise in the final image to produce a cleaner and clearer final image. Image Stacking/Blending is not the same as Focus Stacking, which is normally used when taking Macro or Close Up images.

  • Faked Memory Sticks

    There is a big trade in cheaper memory sticks, that is, all types. These include both USB Pen Drives and SDXC and microSDXC (aka TF) types. But there are many others. Some cheaper ones have speed problems, and if that's not a concern, go ahead. But amongst them are a number of Fake Memory drives. Let's just explain what that means. A fake memory drive is a memory drive, it's the details that are faked. It will actually work up to a point. What has been faked is the amount of storage space it holds. Your computer or phone or whatever device using it, relies on information stored at the beginning of the memory to know how much space there is on it. Also held there is the file index system. If someone can overwrite that information, then the drive can return false data to the system about how much space it has.

  • Inkscape Tutorial: Create A Custom Calendar
  • Using Timeshift To Backup & Restore Your PCLinuxOS System

    I recently ran across a post by one of the PCLinuxOS forum members, asking for an article/tutorial on how to use Timeshift, so I decided to give it a go. Now, if you're new to PCLinuxOS or Linux in general, you may be asking yourself, "what is Timeshift?" Well, Timeshift is a package/program written for Linux to create restore points for your operating system, much like the restore point feature in Windows. It allows you to make incremental backups that create exact images of your system, at specific points in time. They can be used to restore your system to the exact state that it was in, at the time when the backup was made. The backups are incremental so they don't need as much hard drive space to store.

  • BPF For Observability: Getting Started Quickly | Linux Journal

    BPF is a powerful component in the Linux kernel and the tools that make use of it are vastly varied and numerous. In this article we examine the general usefulness of BPF and guide you on a path towards taking advantage of BPF’s utility and power. One aspect of BPF, like many technologies, is that at first blush it can appear overwhelming. We seek to remove that feeling and to get you started.

  • Learn how to simplify data protection using Vinchin Backup & Recovery with Oracle Linux Virtualization Manager

    Looking for a reliable backup solution for your Oracle Linux Virtualization Manager deployments? Join us on Wednesday, December 16, for a webinar with Luwen Zhang from Vinchin and Simon Coter from Oracle. Luwen and Simon will discuss how to simplify the data protection process using Vinchin Backup & Recovery with Oracle Linux Virtualization Manager.

Linux: The 7 best distributions for new users

The age-old question has returned, one that divides a certain community faster than a penguin can devour a mouthful of krill. That question? What are the best Linux distributions for new users? When you ask the question of the Linux community, they inevitably answer with the distribution they use. Why wouldn't they? Loyalty has always been set at a fairly high bar with Linux. You find a distribution that's perfect for you, and you want everyone to use it. Thing is, you probably forget that your Linux skills are likely considerably higher than the average user--and especially the new user. Read more