Illumos

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Illumos
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DeveloperIllumos Foundation
Written inC
OS familyUnix (SVR4)[1]
Working stateCurrent
Source modelOpen source with binary blobs
Initial release2010; 16 years ago (2010)
Repository
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Available inEnglish
Supported platformsIA-32, x86-64, SPARC, ARM (under development),[2] DEC Alpha
Kernel typeMonolithic
LicenseCDDL, BSD, MIT
Preceded byOpenSolaris
Official website{{#property:P856}}

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]

Name

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The maintainers write illumos in lowercase,[6] since some computer fonts do not clearly distinguish a lowercase L from an uppercase i: Il (see homoglyph).[7] The project name is a combination of words illuminare from the Latin for to light, and OS for Operating System.[8]

History and development

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File:OpenIndiana Hipster 2021.10 MATE desktop environment screenshot.png
The OpenIndiana operating system is one of many Illumos distributions.

Illumos was announced via webinar on 3 August 2010,[9] 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.[10][11][12] 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.[13] 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.[14] The "userland" software is now built with GNU make,[15] 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.[16]

As of 2019 its primary development project, illumos-gate, derives from OS/Net (aka ON),[17] 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.[18][19][20]

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[4]

Discontinued:

  • Dyson, derived from Debian using libc, and SMF init system.
  • OpenSXCE, distribution for developers and system administrators for IA-32/x86-64 x86 platforms and SPARC.[27]

Illumos Foundation

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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".[28]

Notes

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

References

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  11. ^ Archived at Ghostarchive and the Wayback Machine: Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  12. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  13. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  14. ^ 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."
  15. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
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  27. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  28. ^ State of California Department of Justice, Office of the Attorney General. Registry of Charities and Fundraisers. Accessed December 17, 2024.
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  • Lua error in Module:Official_website at line 94: attempt to index field 'wikibase' (a nil value).
  • napp-it, a ZFS web interface for Illumos-based NAS or SAN appliances.

de:OpenSolaris#illumos

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