ChakraLinux.org ChakraLinux.org The Half Rolling repository model - - PowerPoint PPT Presentation

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ChakraLinux.org ChakraLinux.org The Half Rolling repository model - - PowerPoint PPT Presentation

Jul 28, 2023 26 likes •286 views

ChakraLinux.org ChakraLinux.org The Half Rolling repository model The golden intersection for desktop users? About Chakra About Chakra Focus on KDE and Qt Software Independent , using Arch technologies Half-Rolling repository model

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ChakraLinux.org ChakraLinux.org

The Half Rolling repository model The golden intersection for desktop users?

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About Chakra About Chakra

  • Focus on KDE and Qt Software
  • Independent, using Arch technologies
  • Half-Rolling repository model

Chakra 2017.10 ‘Goedel’

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About me About me

Neofytos Kolokotronis

  • Chakra team member
  • Community & Project management
  • Collaborator at Free Software and

Open Data/Government projects

  • neofytosk.com, @tetris4
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Popular Models Popular Models

Fully Rolling Non Rolling - Fixed

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Popular Models Popular Models

Fully Rolling Non Rolling - Fixed Half Rolling

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Fully Rolling Fully Rolling

Advantages

  • Latest software versions with new:

– functionalities – security updates – bug fjxes

  • Continuous upgrades
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Fully Rolling Fully Rolling

Disadvantages Each upgrade comes with a risk:

  • regression
  • bug
  • broken system
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Fully Rolling Fully Rolling

Examples

  • ArchLinux
  • Gentoo

Ideal for

  • Enthusiasts after the latest & greatest
  • Experienced users

‘Racing Skaters’ by Alternate Skate https://unsplash.com/photos/_tH3YCjPCCE

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Non Rolling – Fixed Releases Non Rolling – Fixed Releases

Advantages

  • Stability

less risks from upgrading ⇒

  • Easier maintenance
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Non Rolling – Fixed Releases Non Rolling – Fixed Releases

Disadvantages

  • End of Life of a release

major ⇒ upgrade risks

  • Slower availability of new software

versions

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Non Rolling – Fixed Releases Non Rolling – Fixed Releases

Examples

  • Debian
  • Ubuntu
  • Fedora

Ideal for

  • Workstations
  • Servers
  • Casual users

‘fxed?’ by D. Midgley https://www.fickr.com/photos/petrichor/406667698/

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Half Rolling - Introduction Half Rolling - Introduction

Two layers of software

  • 1. A stable core of software updated

periodically.

  • 2. Fully rolling DE and applications on

top of it.

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Half Rolling - Introduction Half Rolling - Introduction

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Half Rolling – Implementation Half Rolling – Implementation

  • 1. Core
  • Software critical for an operational

system

  • Periodically updated on scheduled

intervals

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Half Rolling – Implementation Half Rolling – Implementation

  • kernel & drivers
  • xorg
  • multimedia
  • boost
  • glib
  • python
  • ...
  • 1. Core

Groups of packages

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Half Rolling – Implementation Half Rolling – Implementation

  • 1. Core Updates

Not all package groups are created equal

  • kernel, graphics drivers ⇒ 3-4 times

per year

  • xorg, multimedia ⇒ 1-2 times

per year

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Half Rolling – Implementation Half Rolling – Implementation

  • 2. Desktop Environment & Applications

What users interact with

  • Plasma DE and Frameworks by KDE
  • Applications
  • Any related dependencies
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Half Rolling – Implementation Half Rolling – Implementation

  • Unifjed
  • Packages kept for several days or weeks
  • Move to stable repositories accordingly:

core, desktop, gtk, lib32 Testing Repository

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Half Rolling – Advantages Half Rolling – Advantages

  • Balance in stability as updates are:

– periodical – foreseeable

  • Latest versions of applications
  • One time installation
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Half Rolling – Disadvantages Half Rolling – Disadvantages

VS Fully Rolling Slower upgrades of core components VS Non Rolling Fixed Release Increased upgrade-related risks

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Half Rolling – Challenges Half Rolling – Challenges

  • 1. Application requiring a newer library

version

  • new library version breaks

compatibility?

  • library part of a group of packages in

core?

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Half Rolling – Challenges Half Rolling – Challenges

  • 2. Security vulnerabilities in core packages
  • Is an update really required?

‘Sisyphus’ by Gerard Van der Leun https://www.fickr.com/photos/1000photosofnewyorkcity/8819982782/

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Half Rolling – Challenges Half Rolling – Challenges

  • 3. Sticking to the schedule
  • Lack of packaging resources
  • Unsheduled required upgrades
  • Unpredictable issues
  • Need to keep rolling
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Half Rolling – Challenges Half Rolling – Challenges

Solutions

  • Update application and library
  • Patch
  • Recompile the whole group
  • Application and library version freeze
  • Postpone or skip a group
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Half Rolling – Is it for you? Half Rolling – Is it for you?

Ideal for

  • Casual desktop users
  • Gamers
  • Small ofces and businesses
  • School laboratories
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Questions? Questions? Thank you!

Let’s connect:

  • neofytosk.com
  • @tetris4