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See also: https://github.com/openstack/liberasurecode/pull/4 and https://github.com/openstack/liberasurecode/pull/5 Co-Authored-By: utree <aproc@qq.com> Co-Authored-By: Martin Raiber <martin@urbackup.org> Change-Id: I174160dc1190398b6a8bbf60bec55f72ae1bec37 |
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| autogen.sh | ||
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| ChangeLog | ||
| configure.ac | ||
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| erasurecode_rs_vand.pc.in | ||
| erasurecode.pc.in | ||
| get_flags_from_cpuid.c | ||
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liberasurecode
liberasurecode is an Erasure Code API library written in C with pluggable Erasure Code backends.
Highlights
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Unified Erasure Coding interface for common storage workloads.
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Pluggable Erasure Code backends - liberasurecode supports the following backends:
- 'liberasurecode_rs_vand' - Native, software-only Erasure Coding implementation that supports a Reed-Solomon backend
- 'Jerasure' - Erasure Coding library that supports Reed-Solomon, Cauchy backends [1]
- 'ISA-L' - Intel Storage Acceleration Library - SIMD accelerated Erasure Coding backends [2]
- 'SHSS' - NTT Lab Japan's hybrid Erasure Coding backend [4]
- 'Flat XOR HD' - built-in to liberasurecode, based on [3]
- 'libphazr' - Phazr.IO's erasure code backend with built-in privacy [5]
- 'NULL' template backend implemented to help future backend writers
-
True 'plugin' architecture - liberasurecode uses Dynamically Loaded (DL) libraries to realize a true 'plugin' architecture. This also allows one to build liberasurecode indepdendent of the Erasure Code backend libraries.
-
Cross-platform - liberasurecode is known to work on Linux (Fedora/Debian flavors), Solaris, BSD and Darwin/Mac OS X.
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Community support - Developed alongside Erasure Code authority Kevin Greenan, liberasurecode is an actively maintained open-source project with growing community involvement (Openstack Swift, Ceph, PyECLib, NTT Labs).
Active Users
- PyECLib - Python EC library: https://github.com/openstack/pyeclib
- Openstack Swift Object Store - https://wiki.openstack.org/wiki/Swift
Build and Install
Install dependencies -
Debian/Ubuntu hosts:
$ sudo apt-get install build-essential autoconf automake libtool
Fedora/RedHat/CentOS hosts:
$ sudo yum install -y gcc make autoconf automake libtool
To build the liberasurecode repository, perform the following from the top-level directory:
$ ./autogen.sh
$ ./configure
$ make
$ make test
$ sudo make install
Getting Help
- Bugs: https://bugs.launchpad.net/liberasurecode/
- Mailing List: http://lists.openstack.org/pipermail/openstack-discuss/ (use tag
[swift][liberasurecode]) - IRC: #openstack-swift on OFTC
References
[1] Jerasure, C library that supports erasure coding in storage applications, http://jerasure.org
[2] Intel(R) Storage Acceleration Library (Open Source Version), https://01.org/intel%C2%AE-storage-acceleration-library-open-source-version
[3] Greenan, Kevin M et al, "Flat XOR-based erasure codes in storage systems", https://web.archive.org/web/20161001210233/https://www.kaymgee.com/Kevin_Greenan/Publications_files/greenan-msst10.pdf
[4] Kota Tsuyuzaki tsuyuzaki.kota@lab.ntt.co.jp, "NTT SHSS Erasure Coding backend"
[5] Jim Cheung support@phazr.io, "Phazr.IO libphazr erasure code backend with built-in privacy"