Finnix

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Finnix
Finnix logo

Finnix 89.0 "about" boot screen
Website www.finnix.org
Company/
developer
Ryan Finnie
OS family Linux
Source model Open source
Initial release March 22, 2000 (2000-03-22) (age 8)
Latest stable release 91.1 / March 4, 2008 (2008-03-04); 99 days ago
Available language(s) English
Update method APT
Package manager dpkg
Supported platforms i386, PowerPC, UML, Xen
Kernel type Monolithic (Linux)
Default user interface Console
License Various
Working state Current
Finnix 88.0 default startup
Finnix 88.0 default startup

Finnix is a Debian based Live CD Linux distribution, developed by Ryan Finnie and intended for system administrators for tasks such as filesystem recovery, network monitoring and OS installation.[1] Finnix is a relatively small distribution, with an ISO download size of approximately 100 MiB, and is available for the x86, PowerPC, User Mode Linux and Xen architectures. Finnix can be run off a bootable CD, USB thumb drive, hard drive, or network boot (PXE).

Contents

[edit] History

Finnix development first began in 1999, making it one of the oldest distributions released with the intent of being run completely from a bootable CD (the other Live CD around at the time was the Linuxcare Bootable Business Card CD, first released in 1999).[2] Finnix 0.01 was based on Red Hat Linux 6.1, and was created to help with administration and recovery of other Linux workstations around Finnie's office. The first public release of Finnix was 0.03, and was released in early 2000, based on an updated Red Hat Linux 6.2. Despite its 300 MiB ISO size and requirement of 32 MiB RAM (which, given RAM prices and lack of high-speed Internet proliferation at the time, was prohibitive for many), Finnix enjoyed moderate success, with over 10,000 downloads.[3][4] After version 0.03, development ceased, and Finnix was left unmaintained until 2005.

On 23 October 2005, Finnix 86.0 was released. Earlier unreleased versions (84, and 85.0 through 85.3) were "Knoppix remasters", with support for Linux LVM and dm-crypt being the main reason for creation. However, 86.0 was a departure from Knoppix, and was derived directly from the Debian "testing" tree.[5]

[edit] Usage

Finnix is released as a small bootable CD ISO. A user can download the ISO, burn the image to CD, and boot into a text mode Linux environment. Finnix requires at least 32MiB RAM to run properly, but can use more if present. Most hardware devices are detected and dealt with automatically, such as hard drives, network cards and USB devices. A user can modify files nearly anywhere on the running CD via UnionFS, a filesystem that can stack a read-write filesystem (in this case, a dynamic ramdisk) on top of a read-only filesystem (the CD media). Any changes made during the Finnix session are transparently written to RAM and discarded upon shutdown. In addition, Finnix uses SquashFS to keep distribution size low.[6]

Finnix can be run completely within RAM, provided the system has at least 192 MiB RAM available. If a "toram" option is passed to Finnix, most of the contents of the CD are copied to a ramdisk, and the CD is ejected, freeing the CDROM drive for other purposes.[7] Finnix can also be placed on a bootable USB thumb drive, or installed permanently on a hard drive.

Finnix 86.1 running as a paravirtualized Xen guest
Finnix 86.1 running as a paravirtualized Xen guest

Finnix is available for several architectures. The primary (and most popular) architecture is x86, but a nearly identical functioning distribution is released concurrently for the PowerPC architecture. In addition, Finnix is aware of both the User Mode Linux and Xen virtualization systems. In particular, the Finnix x86 CD includes a system called Finnix on Finnix, which, through UML, can boot multiple concurrent instances of Finnix, using the same CD the main Finnix instance was booted from.[8] UML and Xen Virtual private server providers such as Linode can provide Finnix as a recovery/maintenance distribution to their customers.[9]

[edit] Versions

New versions of Finnix are released every 3 months on average, with updated software from the Debian "testing" tree, along with new Finnix-specific functionality. Major releases usually include major functionality changes, while minor releases usually include minor fixes and Debian updates to bring Finnix's packages up to date with Debian's "testing" tree. Development branches are named after cities and towns in Wisconsin.

Version Release date Kernel Packages Code name
0.03 22 March 2000 2.2.12 242 none
86.0 23 October 2005 2.6.13 336 none
86.1 21 November 2005 2.6.14 346/336 none
86.2 8 January 2006 2.6.15 343/336 none
87.0 31 March 2006 2.6.16 356/347 none
88.0 2 August 2006 2.6.17 359/349 Pulaski
89.0 22 January 2007 2.6.18 366/359 Oshkosh
89.1 13 April 2007 2.6.18 365/359 Sheboygan
89.2 27 July 2007 2.6.18 365/359 Crivitz
90.0 23 October 2007 2.6.22 367/362 Kaukauna
91.0 29 January 2008 2.6.24 370/366 Seymour
91.1 4 March 2008 2.6.24 364/354 Crivitz

Notes:

  • "Code names" in Finnix refer to the development cycle leading up to the release, and not the release itself. Releases are signified by version number.
  • Versions with two package counts in the table above represent x86 and PowerPC package counts, respectively.

[edit] References

  1. ^ Linux Complete Backup Recovery and HOWTO
  2. ^ Linux.com - A tale of two Linux bootable business cards
  3. ^ Original Finnix site archive
  4. ^ SourceForge Finnix 0.03 download page
  5. ^ Finnix project history
  6. ^ Finnix frequently asked questions
  7. ^ Finnix "cheat codes"
  8. ^ Finnix architectures
  9. ^ Finnix available for use with Linode

[edit] External links

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