Ceph是一个分布式对象,块和文件存储平台
Ceph是加州大学Santa Cruz分校的Sage Weil(DreamHost的联合创始人)专为博士论文设计的新一代自由软件分布式文件系统。自2007年毕业之后,Sage开始全职投入到Ceph开 发之中,使其能适用于生产环境。
C/C++ 其它杂项
共8187Star
详细介绍
Ceph - a scalable distributed storage system
Please see http://ceph.com/ 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.rst 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.
Checking out the source
You can clone from github with
git clone git@github.com:ceph/ceph
or, if you are not a github user,
git clone git://github.com/ceph/ceph
Ceph contains many git submodules that need to be checked out with
git submodule update --init --recursive
Build Prerequisites
The list of Debian or RPM packages dependencies can be installed with:
./install-deps.sh
Building Ceph
Note that these instructions are meant for developers who are compiling the code for development and testing. To build binaries suitable for installation we recommend you build deb or rpm packages, or refer to the ceph.spec.in or debian/rules to see which configuration options are specified for production builds.
Prerequisite: CMake 2.8.11
Build instructions:
./do_cmake.sh
cd build
make
This assumes you make your build dir a subdirectory of the ceph.git checkout. If you put it elsewhere, just replace .. above with a correct path to the checkout.
To build only certain targets use:
make [target name]
To install:
make install
CMake Options
If you run the cmake
command by hand, there are many options you can set with "-D". For example the option to build the RADOS Gateway is defaulted to ON. To build without the RADOS Gateway:
cmake -DWITH_RADOSGW=OFF [path to top level ceph directory]
Another example below is building with debugging and alternate locations for a couple of external dependencies:
cmake -DLEVELDB_PREFIX="/opt/hyperleveldb" -DOFED_PREFIX="/opt/ofed" \
-DCMAKE_INSTALL_PREFIX=/opt/accelio -DCMAKE_C_FLAGS="-O0 -g3 -gdwarf-4" \
..
To view an exhaustive list of -D options, you can invoke cmake
with:
cmake -LH
If you often pipe make
to less
and would like to maintain the diagnostic colors for errors and warnings (and if your compiler supports it), you can invoke cmake
with:
cmake -DDIAGNOSTICS_COLOR=always ..
Then you'll get the diagnostic colors when you execute:
make | less -R
Other available values for 'DIAGNOSTICS_COLOR' are 'auto' (default) and 'never'.
Building a source tarball
To build a complete source tarball with everything needed to build from source and/or build a (deb or rpm) package, run
./make-dist
This will create a tarball like ceph-$version.tar.bz2 from git. (Ensure that any changes you want to include in your working directory are committed to git.)
Running a test cluster
To run a functional test cluster,
cd build
make vstart # builds just enough to run vstart
../src/vstart.sh -d -n -x -l
./bin/ceph -s
Almost all of the usual commands are available in the bin/ directory. For example,
./bin/rados -p rbd bench 30 write
./bin/rbd create foo --size 1000
To shut down the test cluster,
../src/stop.sh
To start or stop individual daemons, the sysvinit script can be used:
./bin/init-ceph restart osd.0
./bin/init-ceph stop
Running unit tests
To build and run all tests (in parallel using all processors), use ctest
:
cd build
make
ctest -j$(nproc)
(Note: Many targets built from src/test are not run using ctest
. Targets starting with "unittest" are run in make check
and thus can be run with ctest
. Targets starting with "ceph_test" can not, and should be run by hand.)
When failures occur, look in build/Testing/Temporary for logs.
To build and run all tests and their dependencies without other unnecessary targets in Ceph:
cd build
make check -j$(nproc)
To run an individual test manually, run ctest
with -R (regex matching):
ctest -R [regex matching test name(s)]
(Note: ctest
does not build the test it's running or the dependencies needed to run it)
To run an individual test manually and see all the tests output, run ctest
with the -V (verbose) flag:
ctest -V -R [regex matching test name(s)]
To run an tests manually and run the jobs in parallel, run ctest
with the -j flag:
ctest -j [number of jobs]
There are many other flags you can give ctest
for better control over manual test execution. To view these options run:
man ctest
Building the Documentation
Prerequisites
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:
admin/build-doc