Purpose
Describe the steps you need to build and test a 1.8 Lustre system (MGS, MDT, MDS, OSS, OST, client) on a CentOS 5.5 machine. The steps to build on CentOS 5.6 are identical, except a different krenel SRPM is required.
Prerequisite
- A newly installed CentOS 5.5 x86_64 machine with the hostname: client-10.
- EPEL Repository: this is a convenient source for git.
Overview
Lustre 1.8 servers require a patched and compiled kernel. Patches are readily available in the Whamcloud git source repository. A test suite is included with the Lustre 1.8 source. This document walks through the steps of patching the kernel, building Lustre and running a basic test of the complete system.
Procedure
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 CentOS RPM based kernel is available on the CentOS site.
Provision Machine
Once CentOS 5.5 is newly installed on client-10 login as root.
- Install required kernel development tools.
yum -y groupinstall "Development Tools" yum -y install rpm-build redhat-rpm-config unifdef gnupg quilt git
- Create a user
build
with the home directory/build
useradd -d /build build
- Switch to the user
build
and change to the build$HOME
directory.su build cd $HOME
- Get the 1.8 branch from the Whamcloud git account.
git clone git://git.whamcloud.com/fs/lustre-release.git cd lustre-release git checkout --track -b b1_8 origin/b1_8
- Run
sh ./autogen.sh
- Resolve any outstanding dependencies until
autogen.sh
completes successfully. Success will look like:[root@client-10 lustre-release]# sh ./autogen.sh Checking for a complete tree... checking for automake-1.9 >= 1.9... found 1.9.6 ... Running automake-1.9... configure.ac: installing `./install-sh' configure.ac: installing `./missing' configure.ac:9: installing `./config.guess' configure.ac:9: installing `./config.sub' Running autoconf... [root@client-10 lustre-release]#
Prepare the kernel source
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:
NOTE If you are performing this walk-thru on CentOS 5.6, the kernel source can be found here:
rpm -i http://mirror.centos.org/centos/5.5/updates/SRPMS/kernel-2.6.18-194.32.1.el5.src.rpm 2>&1 | grep -v mockb
http://mirror.centos.org/centos/5.6/os/SRPMS/kernel-2.6.18-238.el5.src.rpm
- Expand the source. Using rpmbuild will also apply CentOS patches.
cd ~/kernel/rpmbuild/SPECS rpmbuild -bp --target=`uname -m` ./kernel-2.6.spec
This will end with:... + patch -p1 --fuzz=2 -s + echo 'Patch #20240 (xen-hvm-add-hvmop_get_time-hypercall.patch):' Patch #20240 (xen-hvm-add-hvmop_get_time-hypercall.patch): + patch -p1 --fuzz=2 -s + echo 'Patch #20241 (xen-fix-64-bit-pv-guest-user-mode-segv-crashing-host.patch):' Patch #20241 (xen-fix-64-bit-pv-guest-user-mode-segv-crashing-host.patch): + patch -p1 --fuzz=2 -s + exit 0
At this point, we now have kernel souce, with all the CentOS patches applied, residing in the directory /build/kernel/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.x86_64
Patch the kernel source with the Lustre code.
- Add a unique build id so we can be certain our kernel is booted. Edit
~build/kernel/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.x86_64/Makefile
and modify line 4, theEXTRAVERSION
to read:EXTRAVERSION = -lustre18
- enter the directory
/build/kernel/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.x86_64
cd /build/kernel/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.x86_64
- overwrite the
.config
file with/build/lustre-release/lustre/kernel_patches/kernel_configs/kernel-2.6.18-2.6-rhel5-x86_64.config
cp /build/lustre-release/lustre/kernel_patches/kernel_configs/kernel-2.6.18-2.6-rhel5-x86_64.config ./.config
- link the Lustre series and patches
ln -s ~/lustre-release/lustre/kernel_patches/series/2.6-rhel5.series series ln -s ~/lustre-release/lustre/kernel_patches/patches patches
- Apply the patches to the kernel source using quilt
quilt push -av ... ... Applying patch patches/md-avoid-bug_on-when-bmc-overflow.patch patching file drivers/md/bitmap.c Hunk #1 succeeded at 1161 (offset 1 line). Hunk #3 succeeded at 1224 (offset 1 line). patching file include/linux/raid/bitmap.h Applying patch patches/jbd2_stats_proc_init-wrong-place.patch patching file fs/jbd2/journal.c Hunk #1 succeeded at 1051 (offset 152 lines). Now at patch patches/jbd2_stats_proc_init-wrong-place.patch
Build the new kernel as an RPM.
- Go into the kernel source directory and issue the following commands to build a kernel rpm.
cd /build/kernel/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.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:
... ... Requires(rpmlib): rpmlib(CompressedFileNames) <= 3.0.4-1 rpmlib(PayloadFilesHavePrefix) <= 4.0-1 Checking for unpackaged file(s): /usr/lib/rpm/check-files /var/tmp/kernel-2.6.18lustre18-root Wrote: /build/kernel/rpmbuild/SRPMS/kernel-2.6.18lustre18-1.src.rpm Wrote: /build/kernel/rpmbuild/RPMS/x86_64/kernel-2.6.18lustre18-1.x86_64.rpm Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.35163 + umask 022 + cd /build/kernel/rpmbuild/BUILD + cd kernel-2.6.18lustre18 + exit 0 rm ../kernel-2.6.18lustre18.tar.gz
NOTE If you receive a request to generate more entropy, you need to trigger some disk I/O or keyboard I/O. I would recommend (in another terminal):
grep -Ri 'whamcloud' /usr
At this point, you should have a fresh kernel RPM /build/kernel/rpmbuild/RPMS/x86_64/kernel-2.6.18lustre18-1.x86_64.rpm
Configure and build Lustre
- Configure Lustre source
[build@client-10 linux-2.6.18.x86_64]$ cd ~/lustre-release/ [build@client-10 lustre-release]$ ./configure --with-linux=/build/kernel/rpmbuild/BUILD/kernel-2.6.18lustre18/ ... ... LLCPPFLAGS: -D__arch_lib__ -D_LARGEFILE64_SOURCE=1 CFLAGS: -g -O2 -Werror EXTRA_KCFLAGS: -include /build/lustre-release/config.h -g -I/build/lustre-release/lnet/include -I/build/lustre-release/lnet/include -I/build/lustre-release/lustre/include LLCFLAGS: -g -Wall -fPIC -D_GNU_SOURCE Type 'make' to build Lustre.
- make rpms:
[build@client-10 lustre-release]$ make rpms ... ... Wrote: /build/kernel/rpmbuild/RPMS/x86_64/lustre-debuginfo-1.8.5.54-2.6.18_194.32.1.el5.lustre18_201103071000.x86_64.rpm Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.15638 + umask 022 + cd /build/kernel/rpmbuild/BUILD + cd lustre-1.8.5.54 + rm -rf /var/tmp/lustre-1.8.5.54-root + exit 0 make[1]: Leaving directory `/build/lustre-release'
- You should now have build the following, similarly named, rpms:
ls ~build/kernel/rpmbuild/RPMS/x86_64/ lustre-debuginfo-1.8.5.54-2.6.18_lustre18_201103081147.x86_64.rpm lustre-tests-1.8.5.54-2.6.18_lustre18_201103081147.x86_64.rpm lustre-source-1.8.5.54-2.6.18_lustre18_201103081147.x86_64.rpm lustre-modules-1.8.5.54-2.6.18_lustre18_201103081147.x86_64.rpm lustre-1.8.5.54-2.6.18_lustre18_201103081147.x86_64.rpm lustre-ldiskfs-3.1.5-2.6.18_lustre18_201103081148.x86_64.rpm lustre-ldiskfs-debuginfo-3.1.5-2.6.18_lustre18_201103081148.x86_64.rpm kernel-2.6.18lustre18-1.x86_64.rpm
Installing the Lustre kernel and rebooting.
- As root, Install the kernel
[root@client-10 ~]# rpm -ivh ~build/kernel/rpmbuild/RPMS/x86_64/kernel-2.6.18lustre18-1.x86_64.rpm
- Check that
/boot/grub/menu.lst
contains the correct default kernel to boot. This is typically 0:Default=0
reboot
- connect with conman, and watch the machine come up
- view the login prompt with satisfaction:
CentOS release 5.5 (Final) Kernel 2.6.18-lustre18 on an x86_64 client-10.lab.whamcloud.com login:
Installing Lustre.
- Change to
root
and Change directory into/build/kernel/rpmbuild/RPMS/x86_64/
- Install modules
lustre-modules
and user space toolslustre-
rpm -ivh /build/kernel/rpmbuild/RPMS/x86_64/lustre-modules-1.8.5.54-2.6.18_lustre18_*.x86_64.rpm /build/kernel/rpmbuild/RPMS/x86_64/lustre-1.8.5.54-2.6.18_lustre18_*.x86_64.rpm /build/kernel/rpmbuild/RPMS/x86_64/lustre-ldiskfs-3.1.5-2.6.18_lustre18_*.x86_64.rpm
Installing e2fsprogs
e2fsprogs is needed to run the test suite.
- Download e2fsprogs from http://build.whamcloud.com/job/e2fsprogs-master/
- Install with
rpm -ivh e2fsprogs