This walk-thru is targeting developers who want to explore the bleeding edge of Lustre. If you are evaluating Lustre for production, you should choose a Lustre Release. |
Describe the steps you need to build and test a Lustre system (MGS, MDT, MDS, OSS, OST, client) from the HPDD master branch on a x86_64, RHEL/CentOS 6.4 machine.
Lustre 2.1 servers require a patched and compiled kernel. A patched and compiled Lustre server kernel is available from Intel. A separate page is available to walk thru setting up Lustre with these pre-built RPMs. This document is for those who wish to build their Lustre system from source. Note that if you are not modifying the kernel patches on the server, it is possible to use the pre-built Lustre server kernel RPMs, and only build the Lustre code. Note that a patched kernel is NOT needed for the Lustre client. |
Patches are available in the HPDD Git source repository. A test suite is included with the Lustre source. This document walks through the steps of patching the kernel, building Lustre and running a basic test of the complete system.
The procedure requires that a OS is setup for development - this includes Lustre sources, kernel source and build tools. Once setup, a new kernel can be patched, compiled, run and tested. Further reading on building a RHEL RPM based kernel is available from, among other sources, the CentOS site.
Once RHEL 6.3 is newly installed on rhel6-master login as root.
Install the kernel development tools.
# yum -y groupinstall "Development Tools" |
If the Development Tools group is not be available for some reason, you may find the following list if individual packages necessary to install.
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Install additional dependencies
# yum -y install xmlto asciidoc elfutils-libelf-devel zlib-devel binutils-devel newt-devel python-devel hmaccalc perl-ExtUtils-Embed bison elfutils-devel audit-libs-devel |
Install EPEL 5
NOTE EPEL5 is used because it contains quilt and libselinux-devel
# rpm -ivh http://download.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm |
Install quilt and libselinux-devel
# yum -y install quilt libselinux-devel |
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Create a user build
with the home directory /home/build
# useradd -m build |
Switch to the user build
and change to the build $HOME
directory.
# su build # cd $HOME |
Get the MASTER branch from HPDD git.
# git clone git://git.hpdd.intel.com/fs/lustre-release.git # cd lustre-release |
sh ./autogen.sh
Resolve any outstanding dependencies until autogen.sh
completes successfully. Success will look like:
# sh ./autogen.sh Checking for a complete tree... checking for automake-1.9 >= 1.9... found 1.9.6 ... ... configure.ac:10: installing `./config.sub' configure.ac:12: installing `./install-sh' configure.ac:12: installing `./missing' Running autoconf |
You can have different ways to prepare a patched kernel for Lustre. The easier method is to download built RPM packages from build.hpdd.intel.com. For example, if you're running el7, you should download the packages from here: https://build.hpdd.intel.com/view/Non-Reviews/job/lustre-master/arch=x86_64,build_type=server,distro=el7,ib_stack=inkernel/lastSuccessfulBuild/artifact/artifacts/RPMS/x86_64/ at the time when this page is written. You're going to need the packages starting with 'kernel-'. After new kernel packages are downloaded, you can skip the following few steps and go to the section 'Installing the Lustre kernel and rebooting'.
If you want a more challenge life, you can patch the kernel by yourself, in that case, please follow the steps below.
In this walk-thru, the kernel is built using rpmbuild - a tool specific to RPM based distributions.
Get the kernel source. First create the directory structure, then get the source from the RPM. Create a .rpmmacros
file to install the kernel source in our user dir.
# cd $HOME # mkdir -p kernel/rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS} # cd kernel # echo '%_topdir %(echo $HOME)/kernel/rpmbuild' > ~/.rpmmacros |
Install the kernel source:
# rpm -ivh http://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-431.5.1.el6.src.rpm 2>&1 | grep -v mockb |
Red Hat periodically release updates to their distributed kernel. The Lustre Master attempts to stay up-to-date with the most recent kernel from Red Hat. In the event that the link above is not completely up-to-date, you should visit the Red Hat source RPM download site and ensure you are downloading the most recent kernel. The most recent supported kernel is recorded in |
Prepare the source using rpmbuild.
# cd ~/kernel/rpmbuild # rpmbuild -bp --target=`uname -m` ./SPECS/kernel.spec |
This will end with:
... gpg: Total number processed: 1 gpg: imported: 1 + gpg --homedir . --export --keyring ./kernel.pub Red gpg: WARNING: unsafe permissions on homedir `.' + gcc -o scripts/bin2c scripts/bin2c.c + scripts/bin2c ksign_def_public_key __initdata + cd .. + exit 0 |
At this point, we now have kernel source, with all the RHEL/CentOS patches applied, residing in the directory /home/build/kernel/rpmbuild/BUILD/kernel-2.6.431.5.1.el6/linux-2.6.32-431.5.1.el6.x86_64/
Add a unique build id so we can be certain our kernel is booted. Edit ~/kernel/rpmbuild/BUILD/kernel-2.6.32-431.5.1.el6/linux-2.6.32-431.5.1.el6.x86_64/Makefile
and modify line 4, the EXTRAVERSION
to read:
EXTRAVERSION = .431.5.1.el6_lustre |
enter the directory ~/kernel/rpmbuild/BUILD/kernel-2.6.32-431.5.1.el6/linux-2.6.32-431.5.1.el6.x86_64/
# cd ~/kernel/rpmbuild/BUILD/kernel-2.6.32-431.5.1.el6/linux-2.6.32-431.5.1.el6.x86_64/ |
overwrite the .config
file with ~/lustre-release/lustre/kernel_patches/kernel_configs/kernel-2.6.32-2.6-rhel6-x86_64.config
# cp ~/lustre-release/lustre/kernel_patches/kernel_configs/kernel-2.6.32-2.6-rhel6-x86_64.config ./.config |
link the Lustre series and patches
# ln -s ~/lustre-release/lustre/kernel_patches/series/2.6-rhel6.series series # ln -s ~/lustre-release/lustre/kernel_patches/patches patches |
Apply the patches to the kernel source using quilt
# quilt push -av ... ... patching file fs/jbd2/transaction.c Hunk #3 succeeded at 1222 (offset 3 lines). Hunk #4 succeeded at 1357 (offset 3 lines). Now at patch patches/jbd2-jcberr-2.6-rhel6.patch |
Go into the kernel source directory and issue the following commands to build a kernel rpm.
# cd ~/kernel/rpmbuild/BUILD/kernel-2.6.32-431.5.1.el6/linux-2.6.32-431.5.1.el6.x86_64/ # make oldconfig || make menuconfig # make include/asm # make include/linux/version.h # make SUBDIRS=scripts # make include/linux/utsrelease.h # make rpm |
A successful build will return:
... ... Wrote: /home/build/kernel/rpmbuild/SRPMS/kernel-2.6.32lustremaster-1.src.rpm Wrote: /home/build/kernel/rpmbuild/RPMS/x86_64/kernel-2.6.32.lustremaster-1.x86_64.rpm Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.f73m1V + umask 022 + cd /home/build/kernel/rpmbuild/BUILD + cd kernel-2.6.32lustremaster + rm -rf /home/build/kernel/rpmbuild/BUILDROOT/kernel-2.6.32.lustremaster-1.x86_64 + exit 0 rm ../kernel-2.6.32lustremaster.tar.gz |
If you receive a request to generate more entropy, you need to trigger some disk I/O or keyboard I/O. In another terminal, you can either type randomly or execute the following command to generate entropy:
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At this point, you should have a fresh kernel RPM ~/kernel/rpmbuild/RPMS/x86_64/kernel-2.6.32.lustremaster-1.x86_64.rpm
As root, Install the kernel
# rpm -ivh $PKG_PATH/kernel-*.rpm |
Depending on how you got your kernel packages, the PKG_PATH could be ~build/kernel/rpmbuild/RPMS/x86_64 if you built the packages by yourself, or any other directory where you downloaded the packages from build.hpdd.intel.com.
Create initrd using dracut(*This may not be required because initrd should have been created by installing new kernel*)
# /sbin/new-kernel-pkg --package kernel --mkinitrd --dracut --depmod --install 2.6.32.431.5.1.el6_lustre |
optional turn on lustre services, and specify net for lnet
* chkconfig lustre on * vi /etc/modprobe.d/lustre.conf |
reboot
view the login prompt with satisfaction:
Red Hat Enterprise Linux Server release 6.0 (Santiago) Kernel 2.6.32lustremaster on an x86_64 client-10 login: |
Configure Lustre source
# cd ~/lustre-release/ # ./configure --with-linux=/lib/modules/kernel-2.6.32.431.5.1.el6_lustre/build ... ... LLCPPFLAGS: -D__arch_lib__ -D_LARGEFILE64_SOURCE=1 CFLAGS: -g -O2 -Werror EXTRA_KCFLAGS: -include /home/build/lustre-release/config.h -g -I/home/build/lustre-release/libcfs/include -I/home/build/lustre-release/lnet/include -I/home/build/lustre-release/lustre/include LLCFLAGS: -g -Wall -fPIC -D_GNU_SOURCE Type 'make' to build Lustre. |
make rpms:
# make rpms ... ... Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.TsLWpD + umask 022 + cd /home/build/kernel/rpmbuild/BUILD + cd lustre-2.0.61 + rm -rf /home/build/kernel/rpmbuild/BUILDROOT/lustre-2.0.61-2.6.32_lustremaster_g0533e7b.x86_64 + exit 0 make[1]: Leaving directory `/home/build/lustre-release' |
You should now have build the following, similarly named, rpms:
# ls *.rpm kernel-2.6.32lustremaster-1.x86_64.rpm lustre-2.0.61-2.6.32.lustremaster_g0533e7b.x86_64.rpm lustre-debuginfo-2.0.61-2.6.32.lustremaster_g0533e7b.x86_64.rpm lustre-ldiskfs-3.3.0-2.6.32.lustremaster_g0533e7b.x86_64.rpm lustre-ldiskfs-debuginfo-3.3.0-2.6.32.lustremaster_g0533e7b.x86_64.rpm lustre-modules-2.0.61-2.6.32.lustremaster_g0533e7b.x86_64.rpm lustre-source-2.0.61-2.6.32.lustremaster_g0533e7b.x86_64.rpm lustre-tests-2.0.61-2.6.32.lustremaster_g0533e7b.x86_64.rpm |
e2fsprogs is needed to run the test suite.
Install with
# rpm -Uvh ./e2fsprogs-1.42.6.wc2-7.el6.x86_64.rpm ./e2fsprogs-libs-1.42.6.wc2-7.el6.x86_64.rpm |
root
and Change directory into ~build/
lustre-release/Install modules lustre-modules
and user space tools lustre-
# rpm -ivh lustre-ldiskfs-3.3.0-2.6.32.lustremaster* # rpm -ivh lustre-modules-2.0.61-2.6.32.lustremaster* # rpm -ivh lustre-2.0.61-2.6.32.lustremaster_* # rpm -ivh lustre-tests-* |
SELinux, which is on by default in RHEL/CentOS, will prevent the format commands for the various Lustre targets from completing. Therefore you must either disable it or adjust the settings. These instructions explain how to disable it.
Finally, reboot your system.
# vi /etc/selinux/config ---- # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=disabled # SELINUXTYPE= can take one of these two values: # targeted - Only targeted network daemons are protected. # strict - Full SELinux protection. SELINUXTYPE=targeted --- # shutdown -r now |
run /usr/lib64/lustre/tests/llmount.sh
# /usr/lib64/lustre/tests/llmount.sh Loading modules from /usr/lib64/lustre/tests/.. debug=0x33f0404 subsystem_debug=0xffb7e3ff gss/krb5 is not supported Formatting mgs, mds, osts Format mds1: /tmp/lustre-mdt1 Format ost1: /tmp/lustre-ost1 Format ost2: /tmp/lustre-ost2 Checking servers environments Checking clients rhel6-master environments Loading modules from /usr/lib64/lustre/tests/.. debug=0x33f0404 subsystem_debug=0xffb7e3ff gss/krb5 is not supported Setup mgs, mdt, osts Starting mds1: -o loop,user_xattr,acl /tmp/lustre-mdt1 /mnt/mds1 debug=0x33f0404 subsystem_debug=0xffb7e3ff debug_mb=10 Started lustre-MDT0000 Starting ost1: -o loop /tmp/lustre-ost1 /mnt/ost1 debug=0x33f0404 subsystem_debug=0xffb7e3ff debug_mb=10 Started lustre-OST0000 Starting ost2: -o loop /tmp/lustre-ost2 /mnt/ost2 debug=0x33f0404 subsystem_debug=0xffb7e3ff debug_mb=10 Started lustre-OST0001 Starting client: rhel5-build: -o user_xattr,acl,flock rhel6-master@tcp:/lustre /mnt/lustre debug=0x33f0404 subsystem_debug=0xffb7e3ff debug_mb=10 Using TIMEOUT=20 disable quota as required |
/mnt/lustre
mkfs.lustre: Can't parse NID 'rhel6-master@tcp'
you'll need to associate the IP address of a non-loopback interface with name of your machine into the /etc/hosts file.