Testing HOWTO: Difference between revisions

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This HOWTO uses CentOS 7.1 with Lustre 2.8-RC.
This HOWTO uses CentOS 7.1 with Lustre 2.8-RC.


==== Example System Configuration ====  
==== System Configuration ====  


This HOWTO uses a cluster of six virtual machines to run the Lustre tests. Two clients, two MDS, two OSS. This enables testing of a wide variety of Lustre features.
This HOWTO uses a cluster of six virtual machines to run the Lustre tests. Two clients, two MDS, two OSS. This enables testing of a wide variety of Lustre features.
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* node06 - client - 192.168.1.106
* node06 - client - 192.168.1.106


==== Prerequisites ====
==== System Setup ====


* Lustre installed on all nodes, same version
* Lustre installed on all nodes, same version
* PDSH installed and ssh passwordless authentication between nodes configured, will all identities accepted
** Follow this guide to install Lustre RPMs - [https://wiki.hpdd.intel.com/display/PUB/Walk-thru-+Deploying+Lustre+pre-built+RPMs Walk-thru - Deploying Lustre pre-built RPMs]
 
==== System Configuration ====
 
* Disable SELINUX
* Disable SELINUX
** Set SELINUX=disabled in /etc/sysconfig/selinux
** Set SELINUX=disabled in /etc/sysconfig/selinux
* Disable the firewall
* Disable the firewall
** service firewalld stop && systemctl disable firewalld.service
** service firewalld stop && systemctl disable firewalld.service
* Generate passwordless ssh keys for hosts and exchange identities across all nodes, while also accepting the host keys
* Install the epel-release package to enable the EPEL repo
==== Installing Additional Applications for Testing ====
* Install PDSH - mandatory
** https://build.hpdd.intel.com/job/toolkit/arch=x86_64,distro=el7/lastSuccessfulBuild/artifact/_topdir/RPMS/x86_64/
* Install [https://dbench.samba.org/ dbench] - optional, used to gather baseline metrics of disks used in testing
** Available from the EPEL repo, or from the Intel HPDD toolkit builds https://build.hpdd.intel.com/job/toolkit/arch=x86_64,distro=el7/lastSuccessfulBuild/artifact/_topdir/RPMS/x86_64/
* Install [http://www.iozone.org/ iozone] - optional, used to gather baseline metrics of filesystem performance
** Available from Intel HPDD EL7 builds of the toolkit - https://build.hpdd.intel.com/job/toolkit/arch=x86_64,distro=el7/lastSuccessfulBuild/artifact/_topdir/RPMS/x86_64/
* Install Parallel IO Simulator (PIOS) - optional, used to simulate shared file and file per process IO
** Available from the Intel HPDD EL6 builds of the toolkit - https://build.hpdd.intel.com/job/toolkit/arch=x86_64,distro=el6/lastSuccessfulBuild/artifact/_topdir/RPMS/x86_64/


==== Test Configuration ====
==== Test Configuration ====

Revision as of 08:18, 2 September 2015

This HOWTO is intended to demonstrate the basics of configuring and running a small subset of tests on a multi-node configuration. There are many tests available in the suite, and the principles demonstrated here will apply to them all, but this HOWTO will focus on the sanity test.

Note that there is a configuration distributed with the Lustre test suite, local.sh, that easily enables you to test Lustre on a single node using lookback devices with no additional configuration needed. This works well, and tests the Lustre software, but the purpose of this HOWTO is to demonstrate using multiple servers and clients to test more Lustre features in an environment representative of a real install.

While these examples do use virtual machines, they are merely examples and the specifics should be easy to apply to real hardware with the prerequisites setup.

This HOWTO uses CentOS 7.1 with Lustre 2.8-RC.

System Configuration

This HOWTO uses a cluster of six virtual machines to run the Lustre tests. Two clients, two MDS, two OSS. This enables testing of a wide variety of Lustre features.

  • node01 - MGS and MDS - 192.168.1.101
    • 512MB MGT - /dev/sdb
    • 1GB MDT - /dev/sdc
  • node02 - MDS - 192.168.1.102
    • 1GB MDT - /dev/sdb
  • node03 - OSS - 192.168.1.103
    • Four 16GB OST - /dev/sdb, /dev/sdc, /dev/sdd, /dev/sde
  • node04 - OSS - 192.168.1.104
    • Four 16GB OST - /dev/sdb, /dev/sdc, /dev/sdd, /dev/sde
  • node05 - client - 192.168.1.105
    • 16GB shared directory for tests and results
  • node06 - client - 192.168.1.106

System Setup

  • Lustre installed on all nodes, same version
  • Disable SELINUX
    • Set SELINUX=disabled in /etc/sysconfig/selinux
  • Disable the firewall
    • service firewalld stop && systemctl disable firewalld.service
  • Generate passwordless ssh keys for hosts and exchange identities across all nodes, while also accepting the host keys
  • Install the epel-release package to enable the EPEL repo

Installing Additional Applications for Testing

Test Configuration

Install this configuration file in /usr/lib64/lustre/tests/cfg/multinode.sh


# Enables verbose acc-sm output.
VERBOSE=${VERBOSE:-"false"}

# File system configuration
FSNAME="testfs"
FSTYPE=ldiskfs

# Network configuration
NETTYPE="tcp"

# fact hosts
mds_HOST=${mds_HOST:-node01}
mgs_HOST=${mgs_HOST:-$mds_HOST}
ost_HOST=${ost_HOST:-node03}

# MDS and MDT configuration
MDSCOUNT=2
SINGLEMDS=${SINGLEMDS:-mds1}

MDSSIZE=8589000
MDS_FS_MKFS_OPTS=${MDS_FS_MKFS_OPTS:-}
MDS_MOUNT_OPTS=${MDS_MOUNT_OPTS:-}
MDSFSTYPE=ldiskfs

mds1_HOST="node01"
MDSDEV1="/dev/sdd"
mds1_MOUNT="/mnt/testfs/mdt1"
mds1_FSTYPE=ldiskfs

mds2_HOST="node02"
MDSDEV2="/dev/sdd"
mds2_MOUNT="/mnt/testfs/mdt2"
mds2_FSTYPE=ldiskfs

# MGS and MGT configuration
mgs_HOST=${mgs_HOST:-"$mds_HOST"} # combination mgs/mds
MGSOPT=${MGSOPT:-}
MGS_FS_MKFS_OPTS=${MGS_FS_MKFS_OPTS:-}
MGS_MOUNT_OPTS=${MGS_MOUNT_OPTS:-}
MGSFSTYPE=ldiskfs

MGSDEV="/dev/sdb"
MGSSIZE=536000
mgs_MOUNT="/mnt/testfs/mgt"
MGSNID="192.168.1.101@tcp"
mgs_FSTYPE=ldiskfs

# OSS and OST configuration
OSTCOUNT=${OSTCOUNT:-8}
OSTSIZE=${OSTSIZE:-16777216}
OSTFSTYPE=ldiskfs

ost1_HOST="node03"
OSTDEV1="/dev/sdb"
ost1_MOUNT="/mnt/testfs/ost1"
ost1_FSTYPE=ldiskfs

ost2_HOST="node03"
OSTDEV2="/dev/sdc"
ost2_MOUNT="/mnt/testfs/ost2"
ost2_FSTYPE=ldiskfs

ost3_HOST="node03"
OSTDEV3="/dev/sdd"
ost3_MOUNT="/mnt/testfs/ost3"
ost3_FSTYPE=ldiskfs

ost4_HOST="node03"
OSTDEV4="/dev/sde"
ost4_MOUNT="/mnt/testfs/ost4"
ost4_FSTYPE=ldiskfs

ost5_HOST="node04"
OSTDEV5="/dev/sdb"
ost5_MOUNT="/mnt/testfs/ost5"
ost5_FSTYPE=ldiskfs

ost6_HOST="node04"
OSTDEV6="/dev/sdc"
ost6_MOUNT="/mnt/testfs/ost6"
ost6_FSTYPE=ldiskfs

ost7_HOST="node04"
OSTDEV7="/dev/sdd"
ost7_MOUNT="/mnt/testfs/ost7"
ost7_FSTYPE=ldiskfs

ost8_HOST="node04"
OSTDEV8="/dev/sde"
ost8_MOUNT="/mnt/testfs/ost8"
ost8_FSTYPE=ldiskfs

# OST striping configuration
STRIPE_BYTES=${STRIPE_BYTES:-1048576}
STRIPES_PER_OBJ=${STRIPES_PER_OBJ:-0}

# Client configuration
CLIENTCOUNT=2
CLIENTS="node05,node06"
CLIENT1="node05"
CLIENT2="node06"
RCLIENTS="node06"

MOUNT="/mnt/testfs"
MOUNT1="/mnt/testfs"
MOUNT2="/mnt/testfs2"
DIR=${DIR:-$MOUNT}
DIR1=${DIR:-$MOUNT1}
DIR2=${DIR2:-$MOUNT2}

# UID and GID configuration
# Used by several tests to set the UID and GID
if [ $UID -ne 0 ]; then
        log "running as non-root uid $UID"
        RUNAS_ID="$UID"
        RUNAS_GID=`id -g $USER`
        RUNAS=""
else
        RUNAS_ID=${RUNAS_ID:-500}
        RUNAS_GID=${RUNAS_GID:-$RUNAS_ID}
        RUNAS=${RUNAS:-"runas -u $RUNAS_ID -g $RUNAS_GID"}
fi

# Software configuration
PDSH="/usr/bin/pdsh -S -Rssh -w"
FAILURE_MODE=${FAILURE_MODE:-SOFT} # or HARD
POWER_DOWN=${POWER_DOWN:-"powerman --off"}
POWER_UP=${POWER_UP:-"powerman --on"}
SLOW=${SLOW:-no}
FAIL_ON_ERROR=${FAIL_ON_ERROR:-true}

# Debug configuration
#PTLDEBUG=${PTLDEBUG:-"vfstrace rpctrace dlmtrace neterror ha config \
PTLDEBUG=${PTLDEBUG:-"vfstrace dlmtrace neterror ha config \
		      ioctl super lfsck"}
SUBSYSTEM=${SUBSYSTEM:-"all -lnet -lnd -pinger"}

# Lustre timeout
TIMEOUT=${TIMEOUT:-"30"}

# promise 2MB for every cpu
if [ -f /sys/devices/system/cpu/possible ]; then
    _debug_mb=$((($(cut -d "-" -f 2 /sys/devices/system/cpu/possible)+1)*2))
else
    _debug_mb=$(($(getconf _NPROCESSORS_CONF)*2))
fi

DEBUG_SIZE=${DEBUG_SIZE:-$_debug_mb}
DEBUGFS=${DEBUGFS:-"/sbin/debugfs"}

TMP=${TMP:-/tmp}