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Illumos

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Illumos
DeveloperIllumos Foundation
Written inC
OS familyUnix (SVR4)[1]
Working stateCurrent
Source modelOpen source with binary blobs
Initial release2010; 14 years ago (2010)
Repository
Available inEnglish
PlatformsIA-32, x86-64, SPARC, ARM (under development),[2] DEC Alpha
Kernel typeMonolithic
LicenseCDDL, BSD, MIT
Preceded byOpenSolaris
Official websiteillumos.org

Illumos (stylized as "illumos") is a partly free and open-source Unix operating system.[3] It has been developed since 2010 and is based on OpenSolaris, after the discontinuation of that product by Oracle. It comprises a kernel, device drivers, system libraries, and utility software for system administration. Its core has become the base for many different open-sourced Illumos distributions,[4] in a way similar to how the Linux kernel is used in different Linux distributions.[5]

The Illumos Foundation was incorporated in the State of California in 2012 as a 501(c)6 trade association, with founding board members Jason Hoffman (formerly at Joyent), Evan Powell (Nexenta), and Garrett D'Amore. As of 2024, its status in California is "dissolved".[6]

Name

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The maintainers write illumos in lowercase,[7] since some computer fonts do not clearly distinguish a lowercase L from an uppercase i: Il (see homoglyph).[8] The project name is a combination of words illuminare from the Latin for to light, and OS for Operating System.[9]

History and development

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The OpenIndiana operating system is one of many Illumos distributions.

Illumos was announced via webinar on 3 August 2010,[10] as a community effort of a group of core Solaris engineers to create a truly open source Solaris, by swapping closed source bits of OpenSolaris with open implementations.[11][12][13] OpenSolaris itself is based on System V Release 4 (SVR4) and the Berkeley Software Distribution (BSD).

The original plan explicitly stated that Illumos would not be a distribution or a fork. However, after Oracle announced the discontinuation of OpenSolaris, plans were made to fork the final version of the Solaris ON kernel,[a] allowing Illumos to evolve into a kernel of its own.[14] As of 2010, efforts focused on libc, the NFS lock manager, the crypto module, and many device drivers, to create a Solaris-like OS with no closed, proprietary code. As of 2012, development emphasis includes transitioning from the historical compiler, Studio, to GCC.[15] The "userland" software is now built with GNU make,[16] and contains many GNU utilities such as GNU tar. At the time,[clarification needed] Illumos had been lightly led by founder Garrett D'Amore and other community members/developers such as Bryan Cantrill and Adam Leventhal, via a Developers' Council.[17]

As of 2019 its primary development project, illumos-gate, derives from OS/Net (aka ON),[18] which is a Solaris kernel with the bulk of the drivers, core libraries, and basic utilities, similar to what is delivered by a BSD "src" tree. It was originally dependent on OpenSolaris OS/Net, but a fork was made after Oracle silently decided to close the development of Solaris and unofficially killed the OpenSolaris project.[19][20][21]

Features

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  • ZFS, a combined file system with integrated logical volume management, providing a high level of data integrity for very large storage capacities.
  • Solaris Containers (or Zones), a low overhead implementation of operating-system-level virtualization technology for x86 and SPARC systems.[clarification needed]
  • DTrace, a comprehensive dynamic tracing framework for troubleshooting kernel and application problems on production systems in real time.
  • Kernel-based Virtual Machine (KVM), a virtualization infrastructure. KVM supports native virtualization on processors with hardware virtualization extensions.
  • OpenSolaris Network Virtualization and Resource Control (or Crossbow), a set of features that provides an internal network virtualization and quality of service including: virtual NIC (VNIC) pseudo-network interface technology, exclusive ip zones, bandwidth management, and flow control on a per interface and per VNIC basis.

Distributions

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See also: OpenSolaris § Derivatives, Solaris (operating system) § Open source derivatives, and Comparison of OpenSolaris distributions

Distributions, at illumos.org[22]

Discontinued:

Notes

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  1. ^ The "OS/Network" consolidation (project), considered the heart of the Solaris kernel

References

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  1. ^ "Open Brand". www.opengroup.org.
  2. ^ Clulow, Joshua (25 October 2012). "Raspberry Pi Bring-Up". illumos Foundation. Archived from the original on 13 July 2017. Retrieved 14 November 2013.
  3. ^ "Building illumos". illumos.org. Retrieved 31 August 2023.
  4. ^ "Distributions".
  5. ^ Blankenhorn, Dana. "What Illumos is and is not". ZDNet.
  6. ^ State of California Department of Justice, Office of the Attorney General. Registry of Charities and Fundraisers. Accessed December 17, 2024.
  7. ^ "FAQ". illumos. Retrieved 2 May 2020.
  8. ^ Mustacchi, Robert (5 September 2015). "Linux to SmartOS cheatsheet, after smartos-discuss vetting, sans deritus [sic]. by cwvhogue - Pull Request #217". GitHub. Archived from the original on 23 May 2021. Retrieved 23 May 2021.
  9. ^ "Announcement". illumos.org. 15 June 2018.
  10. ^ D'Amore, Garrett (3 August 2010). "illumos - Hope and Light Springs Anew - Presented by Garrett D'Amore" (PDF). illumos.org. Retrieved 3 August 2010.
  11. ^ "Whither OpenSolaris? illumos Takes Up the Mantle". 20 November 2012. Archived from the original on 26 September 2015.
  12. ^ Archived at Ghostarchive and the Wayback Machine: "OpenIndiana, Illumos, and the OpenSolaris Community (Part 1)". 5 May 2011 – via YouTube.
  13. ^ D'Amore, Garrett (27 October 2010). "New illumos logo". Retrieved 14 November 2013.
  14. ^ D'Amore, Garrett (13 August 2010). "The Hand May Be Forced". Retrieved 14 November 2013.
  15. ^ https://www.openindiana.org/documentation/faq/#how-does-openindiana-differ-from-opensolaris Archived 13 May 2021 at the Wayback Machine "Oracle’s Sun Studio has been replaced with the open source GNU GCC compiler."
  16. ^ "OpenIndiana/oi-userland". GitHub. 28 October 2021.
  17. ^ Straughan, Deirdré (16 May 2012). "illumos Developers' Council Meeting". illumos.org. Archived from the original on 10 July 2016. Retrieved 13 August 2012.
  18. ^ "os-net-skeleton". bitbucket.org. Archived from the original on 29 July 2019. Retrieved 29 July 2019.
  19. ^ "Oracle staff report big layoffs across Solaris, SPARC teams". www.theregister.co.uk. Retrieved 29 July 2019.
  20. ^ "OpenSolaris axed by Ellison". www.theregister.co.uk. Retrieved 29 July 2019.
  21. ^ "illumos sporks OpenSolaris". www.theregister.co.uk. Retrieved 29 July 2019.
  22. ^ "Distributions - illumos". illumos.org.
  23. ^ "DilOS". www.dilos.org. Archived from the original on 21 February 2016. Retrieved 26 February 2016.
  24. ^ "OmniOS CE". omniosce.org. Retrieved 10 September 2017.
  25. ^ "Tribblix". www.tribblix.org. Retrieved 26 February 2016.
  26. ^ "v9os". milax.fi. Retrieved 13 December 2017.
  27. ^ "XStreamOS". Sonicle. Retrieved 4 March 2021.
  28. ^ "OpenSXCE". www.opensxce.org. Retrieved 26 February 2016.
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