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-# 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 `..` in do_cmake.sh 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
-