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Ceph is a distributed object, block, and file storage platform
C++ Perl6 C Shell Python Assembly Other
branch: master

Merge pull request #4837 from xinxinsh/wip-kv-zero

in _zero() function, we should remove strips to minimize keyvalue DB update

Reviewed-by: Haomai Wang <>
latest commit 07a2a131e1
@yuyuyu101 yuyuyu101 authored
Failed to load latest commit information.
admin admin/build-doc: fix dependency checks
bin rename from bin/
ceph-erasure-code-corpus @ 4957a9a tests: erasure-code non regression tests must skip isa on i386
ceph-object-corpus @ da43eb1 ceph-object-corpus: drop compat with old ObjectStore::Transaction
cmake/modules CMake: add FindNSPR.cmake
debian logrotate.conf: fixes for systemd
doc rbd: recognize queue_depth option
etc/sysconfig/SuSEfirewall2.d/services packaging: move SuSEfirewall2 templates out of src
examples Fix typos in librados example code
fusetrace remove superfluous second semicolons at end of lines
keys keys: renew autobuild.asc key
m4 crc32c: add aarch64 optimized crc32c implementation
man Merge pull request #4412 from tchaikov/wip-add-man-page
qa tests: fixed environment for osd-class-dir
rpm Move fedora patch file (used by to rpm/ subdir
share ceph-post-file: single command to upload a file to cephdrop
src Merge pull request #4837 from xinxinsh/wip-kv-zero
systemd logrotate.conf: fixes for systemd
udev Rework ceph-disk to allow LUKS for encrypted partitions
.gitignore .gitignore: systemd/ceph-osd@.service
.gitmodule_mirrors .gitmodule_mirrors: add gmock.git mirror
.gitmodules ceph needs gmock/gtest to be statically linked
.mailmap mailmap: Jean-Charles Lopez affiliation
.organizationmap mailmap: Yuri Weinstein affiliation
.peoplemap mailmap: Yuri Weinstein affiliation
CMakeLists.txt cmake: skip man/CMakeLists.txt
CONTRIBUTING.rst doc: recommendations related to performances / cleanup
COPYING COPYING: note license
COPYING-GPL2 Add GPLv2 text file
COPYING-LGPL2.1 COPYING: note licenses for all files, not just the default
ChangeLog first pass at autoconf and automake
CodingStyle Clarify CodingStyle with respect to tab compression of space runs
Doxyfile doc: do not doxygen src/tracing
INSTALL Update INSTALL to mention the submodules/recursive Makefile: install ceph-post-file keys with mode 600
NEWS first pass at autoconf and automake
PendingReleaseNotes PendingReleaseNotes: document changes to librbd's aio_read methods
README README: symlink from
README.cmake Combined CMake Build for Hammer README: simplify build deps section
README.xio xio: Update README.xio with dependencies
SubmittingPatches SubmittingPatches: clarify how Reviewed-by lines are added do not submodule --force if git does not support it Merge pull request #5094 from SUSE/wip-sharutils-dupe Fix junit4.jar detection unambiguously use nss unless user asks for cryptopp
doc_deps.deb.txt doc: The dot package is included in graphviz package detect yum-builddep errors build: NPROC overrides make -j bz2 only
pom.xml update license for libcephfs tests: display the output of failed make check runs

Ceph - a scalable distributed storage system

Please see for current info.

Contributing Code

Most of Ceph is licensed under the LGPL version 2.1. Some miscellaneous code is under BSD-style license or is public domain. The documentation is licensed under Creative Commons Attribution-ShareAlike (CC BY-SA). There are a handful of headers included here that are licensed under the GPL. Please see the file COPYING for a full inventory of licenses by file.

Code contributions must include a valid "Signed-off-by" acknowledging the license for the modified or contributed file. Please see the file SubmittingPatches for details on what that means and on how to generate and submit patches.

We do not require assignment of copyright to contribute code; code is contributed under the terms of the applicable license.

Build Prerequisites

The list of Debian or RPM packages dependencies can be installed with:


Note: libsnappy-dev and libleveldb-dev are not available upstream for Debian Squeeze. Backports for Ceph can be found at

Building Ceph

Developers, please refer to the Developer Guide for more information, otherwise, you can build the server daemons, and FUSE client, by executing the following:


(Note that the FUSE client will only be built if libfuse is present.)


The configure script will complain about any missing dependencies as it goes. You can also refer to debian/control or for the package build dependencies on those platforms. In many cases, dependencies can be avoided with --with-foo or --without-bar switches. For example,

./configure --with-nss         # use libnss instead of libcrypto++
./configure --without-radosgw  # do not build radosgw
./configure --without-tcmalloc # avoid google-perftools dependency

Building packages

You can build packages for Debian or Debian-derived (e.g., Ubuntu) systems with

sudo apt-get install dpkg-dev
dpkg-checkbuilddeps        # make sure we have all dependencies

For RPM-based systems (Red Hat, SUSE, etc.),


Building the Documentation


The list of package dependencies for building the documentation can be found in doc_deps.deb.txt:

sudo apt-get install `cat doc_deps.deb.txt`

Building the Documentation

To build the documentation, ensure that you are in the top-level `/ceph directory, and execute the build script. For example:

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