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NEXT3™ is a flavor of the widely used Ext3 file system with built-in support for snapshots.
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NEXT3(R) is a flavor of the widely used Ext3 file system with built-in support for snapshots.
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Developed by [http://www.ctera.com/ CTERA Networks], NEXT3 is licensed under the GPL.
== Features ==
== Features ==
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* Backward and forward compatible to Ext3
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* Backward and forward compatible with Ext3
* Incremental, volume level, read-only snapshots
* Incremental, volume level, read-only snapshots
* Snapshots use available file system disk space
* Snapshots use available file system disk space
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* Snapshot deletion frees up disk space
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* Snapshot deletion automatically frees up disk space
* Retains Ext3 stability including journaling and fsck
* Retains Ext3 stability including journaling and fsck
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* Small performance overhead (on average usage scenarios)
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* Minimal performance overhead (in average usage scenarios)
* No upper limit on number or size of snapshots
* No upper limit on number or size of snapshots
== Documentation ==
== Documentation ==
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=== Users ===
* [[FAQ]]
* [[FAQ]]
* [[Getting started]]
* [[Getting started]]
* [[Moving from Ext3 and back]]
* [[Moving from Ext3 and back]]
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* [http://sourceforge.net/projects/next3/files/Next3_Snapshots.pdf/download Snapshots design]
 
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* [[Diagrams]]
 
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* [[Code documentation]]
 
* [[Changelog]]
* [[Changelog]]
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* [[Known issues]]
* [[License]]
* [[License]]
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=== Developers ===
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* [[Technical overview]]
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* [http://sourceforge.net/projects/next3/files/Next3_Snapshots.pdf/download Snapshots design (PDF format)]
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* [[Diagrams]]
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* [[Code documentation]]
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* [[On-disk format]]
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* [[User-kernel API]]
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* [[Ext4 snapshots TODO]]
== Source Code ==
== Source Code ==
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[[Next3 patches]] are available for download on the project [http://sourceforge.net/projects/next3/files/ download page].
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The latest Next3 code as well as in development Ext4 snapshots code is available on [https://github.com/amir73il/ext4-snapshots github].
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Please contact the project administrator if you would like to contribute to the project by reviewing the patches.
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Please contact the project administrator if you would like to contribute to Next3 or Ext4 snapshots development.
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== Beta Testing ==
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== Testing ==
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Next3 is being tested by a group of beta testers on an ARM platforms with 512MB RAM.
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Next3 is being used in production on ARM and X86_64 platforms.
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It has also undergone basic testing on X86.
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Ext4 snapshots has undergone basic testing on X86 and X86_64.
Please post bugs to the [https://lists.sourceforge.net/lists/listinfo/next3-devel next3-devel mailing list].
Please post bugs to the [https://lists.sourceforge.net/lists/listinfo/next3-devel next3-devel mailing list].
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== Benchmarks ==
== Benchmarks ==
[[Bonnie++]]
[[Bonnie++]]
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Disk benchmark of ext4 snapshots with [http://global.phoronix-test-suite.com/index.php?k=profile&u=amir73il-4632-11284-26560 phoronix-test-suite]
Please post benchmark results to the [https://lists.sourceforge.net/lists/listinfo/next3-devel next3-devel mailing list].
Please post benchmark results to the [https://lists.sourceforge.net/lists/listinfo/next3-devel next3-devel mailing list].

Current revision as of 14:57, 31 May 2011

NEXT3(R) is a flavor of the widely used Ext3 file system with built-in support for snapshots. Developed by CTERA Networks, NEXT3 is licensed under the GPL.

Contents

Features

  • Backward and forward compatible with Ext3
  • Incremental, volume level, read-only snapshots
  • Snapshots use available file system disk space
  • Snapshot deletion automatically frees up disk space
  • Retains Ext3 stability including journaling and fsck
  • Minimal performance overhead (in average usage scenarios)
  • No upper limit on number or size of snapshots

Documentation

Users

Developers

Source Code

The latest Next3 code as well as in development Ext4 snapshots code is available on github.

Please contact the project administrator if you would like to contribute to Next3 or Ext4 snapshots development.

Testing

Next3 is being used in production on ARM and X86_64 platforms.

Ext4 snapshots has undergone basic testing on X86 and X86_64.

Please post bugs to the next3-devel mailing list.

Please contact the project administrator if you would like to contribute to the project by testing on your platform.

Benchmarks

Bonnie++

Disk benchmark of ext4 snapshots with phoronix-test-suite

Please post benchmark results to the next3-devel mailing list.

Please contact the project administrator if you would like to contribute to the project by running benchmarks.

Help and support

Please post support questions to the next3-users mailing list.

Please post bugs and technical questions to the next3-devel mailing list.

Please contact the project administrator if you would like to contribute to the project in any way.

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