EOS Storage
C++ C HTML CMake Shell Python Other
Clone or download
Failed to load latest commit information.
ApMon SPEC: bump versiont to 1.1.8 Jul 4, 2018
archive CMAKE: Create the archive directories from cmake Apr 27, 2018
auth_plugin HTTP,AUTH: Correct HmacSha1 size passed to encoding May 23, 2018
authz CONSOLE: Remove dependency on XrdOucEnv to parse the server response … Jan 28, 2018
cmake FST: Include davix library in build May 23, 2018
common ALL: Replace use of XrdSysTimer with std::this_thread::sleep_for Jul 4, 2018
console ALL: Minor comment adjustments Jun 29, 2018
debian DEB: bz2 and runtime dependencies for fusex Nov 2, 2017
doc DOC: Update release notes for 4.3.4 Jul 4, 2018
etc/logrotate.d Merge remote-tracking branch 'origin/beryl_aquamarine' Sep 29, 2017
fst FST: Fix macosx build Jul 4, 2018
fuse FUSE: Fix one more missing include for macosx Jul 4, 2018
fusex ALL: Replace use of XrdSysTimer with std::this_thread::sleep_for Jul 4, 2018
git UTILS: Disable any astylerc file that might exist on the host machine Aug 18, 2016
gitlab-ci CI: Fix store_artifacts script Jun 26, 2018
httpd-mini BUILD: clean-up cmake structure and improve (-DPREFIX+... support for… Jan 18, 2013
icons OSX: new icon for dmg package Sep 22, 2017
man MAN: Update man pages Jun 20, 2017
mgm MGM: Always check log level Jul 4, 2018
microhttpd MICROHTTPD: Do not return wrong socket when DUPFD fails Sep 28, 2017
misc MGM: add 'EOS_MGM_FUSEX_PORT' to the example eos_env file Jun 22, 2018
mq MQ: Use pre-increment with iterator where possible and improve a bit … Jul 4, 2018
namespace NS: Fix lock-order-inversion when prefetching Jul 4, 2018
nginx NGINX: releasing newest version for testing Dec 12, 2017
proto CONSOLE/MGM: Extend and refactor the route command to accept multiple… Jun 25, 2018
srm CMAKE: Add a bit of consistency to the CMake files and make them more… Dec 10, 2014
sync ALL: removing old 'eosha' daemon May 7, 2018
test TEST: Return error if the eos-instance-test script fails Jun 22, 2018
unit_tests MGM: Add routing endpoint status update mechanism to detect if the co… Jun 29, 2018
utils UTIL: Bring eos-filter-stacktrace up-to-date Jun 22, 2018
vst ALL: More library dependencies fixes Sep 12, 2016
.clang-format MISC: Add .clang-format and .clang-tidy configuration files that can … Jun 9, 2016
.clang-tidy MISC: Add .clang-format and .clang-tidy configuration files that can … Jun 9, 2016
.gitignore ALL: clion and eclipse specific setup files to gitignore [ci skip] May 15, 2017
.gitlab-ci.yml CI: Add the 'runner-9' tag also to the eos_dockerimage_commit stage Jul 4, 2018
.gitmodules ALL: expanding the xrootd-ssi-protobuf-interface to the FST May 17, 2018
CMakeLists.txt COMMON: Add SharedMutex implementation using std::shared_timed_mutex Jun 8, 2018
License Truncating part of the license explaining how to apply a GPL license. Dec 6, 2011
README.md ALL: removing old 'eosha' daemon May 7, 2018
elrepopackage.spec SPEC/CI: new el repo meta package Dec 7, 2017
eos.spec.in SPEC: Put back library removed by mistake Jun 29, 2018
genversion.sh BUILD: replacing release with loginfo for commits. Fixes EOS-2205 Jan 6, 2018


build status



EOS is a software solution that aims to provide fast and reliable multi-PB disk-only storage technology for both LHC and non-LHC use-cases at CERN. The core of the implementation is the XRootD framework which provides feature-rich remote access protocol. The storage system is running on commodity hardware with disks in JBOD configuration. It is written mostly in C/C++, with some of the extra modules in Python. Files can be accessed via native XRootD protocol, a POSIX-like FUSE client or HTTP(S) & WebDav protocol.


The most up to date documentation can be found at: http://eos-docs.web.cern.ch/eos-docs/

Doxygent documentaion of the API is available in the ./doc directory and can be generated using the following command:

# Inside the EOS git clone directory
cd doc
# Documentation generated in the ./html directory which can be accessed using any browser
# file:///eos_git_clone_dir/doc/html/index.html

Project Directory Structure

  • archive - Archive tool implementation in Python
  • auth_plugin - Authorization delegation plugin
  • authz - Authorization capability functionality
  • cmake - CMake related scripts and functions
  • common - Common helper files and classes
  • console - Command line client implementation
  • doc - Doxygen documentation
  • etc - Service scripts, logrotation and sysconfig Files
  • fst - The Storage Server Plugin (FST)
  • fuse - The FUSE mount Client (eosd low level API)
  • man - Manual pages
  • mgm - Meta Data Namespace and Scheduling Redirector Plugin (MGM)
  • mq - Message Queue Server Plugin
  • namespace - Namespace Implementation
  • nginx - Nginx related patches for EOS integration
  • srm - SRM BestMan utility scripts
  • sync - file/directory synchronization programs
  • test - Instance test script with some dedicated test executables
  • utils - Usefull utilities and the uninstall scripts
  • var - Placeholder directory to create log, http and namespace directories


  yum install -y git gcc cmake readline readline-devel fuse fuse-devel \
leveldb leveldb-devel zlib zlib-devel libattr libattr-devel libuuid libuuid-devel \
xfsprogs xfsprogs-devel sparsehash sparsehash-devel e2fsprogs e2fsprogs-devel \
libmicrohttpd libmicrohttpd-devel openssl openssl-devel openssl-static \
ncurses ncurses-devel ncurses-static protobuf-devel cppunit-devel openldap-devel \
hiredis-devel zeromq-devel jsoncpp-devel xrootd xrootd-server-devel xrootd-client-devel \
xrootd-private-devel cppzmq-devel libcurl-devel


To build EOS, you need gcc (>=4.4) and CMake installed on your system:

# Note that you will also need to check out the fmd and qclient git submodules
git submodule update --init --recursive
# Create build workdir
mkdir build
cd build
# Run CMake
cmake3 ..
# Build
make -j 4


The default behaviour is to install EOS at system level using CMAKE_INSTALL_PREFIX=/usr. To change the default install prefix path, do the following:

# Modify the default install path
cmake ../ -DCMAKE_INSTALL_PREFIX=/other_path
# Install - might require sudo privileges
make install
# Uninstall
make uninstall

Source/Binary RPM Generation

To build the source/binary RPMs run:

# Create source tarball
make dist
# Create Source RPM
make srpm
# Create RPMS
make rpm

System specific notes

  • The current production version of EOS in the beryl_aquamarine branch which has a hard requirement on XRootD 3.3.6.
  • The the future production version of EOS is the citrine branch and requires XRootD >= 4.2.0.

Bug Reporting

You can send EOS bug reports to project-eos@cern.ch. The preferable way, if you have access, is use the online bug tracking system Jira to submit new problem reports or search for existing ones: https://its.cern.ch/jira/browse/EOS


EOS - The CERN Disk Storage System
Copyright (C) 2015 CERN/Switzerland
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.