X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Ftests%2Ffunctions.sh;h=8d010df7460d7e389b6c206858dc53b1c0029793;hp=af268ca0f0867f8dec37df4a108079f0a26c45c1;hb=e2cb43c409b9;hpb=29abb12fe8a333d8295420dfe3c70b9f742d6527

diff --git a/lustre/tests/functions.sh b/lustre/tests/functions.sh
index af268ca..8d010df 100644
--- a/lustre/tests/functions.sh
+++ b/lustre/tests/functions.sh
@@ -1,6 +1,4 @@
 #!/bin/bash
-# -*- mode: Bash; tab-width: 4; indent-tabs-mode: t; -*-
-# vim:shiftwidth=4:softtabstop=4:tabstop=4:
 
 # Simple function used by run_*.sh scripts
 
@@ -53,7 +51,7 @@ lrepl() {
 EOF
 
     # Prompt escapes don't work in read -p, sadly.
-    prompt=":test_${testnum:-UNKNOWN}:$(uname -n):$(basename $PWD)% "
+    prompt=":${TESTNAME:-UNKNOWN}:$(uname -n):$(basename $PWD)% "
 
     # We use read -r to get close to a shell experience
     while read -e -r -p "$prompt" rawline; do
@@ -171,7 +169,7 @@ signaled() {
 }
 
 mpi_run () {
-    local mpirun="$MPIRUN $MPIRUN_OPTIONS"
+    local mpirun="$MPIRUN $MPIRUN_OPTIONS --oversubscribe"
     local command="$mpirun $@"
     local mpilog=$TMP/mpi.log
     local rc
@@ -284,41 +282,59 @@ print_opts () {
     [ -e $MACHINEFILE ] && cat $MACHINEFILE
 }
 
-run_compilebench() {
-	# Space estimation:
-	# compile dir kernel-0	~1GB
-	# required space	~1GB * cbench_IDIRS
+is_lustre () {
+	[ "$(stat -f -c %T $1)" = "lustre" ]
+}
 
-	local dir=${1:-$DIR}
+setstripe_getstripe () {
+	local file=$1
+	shift
+	local params=$@
 
-    cbench_DIR=${cbench_DIR:-""}
-    cbench_IDIRS=${cbench_IDIRS:-2}
-    cbench_RUNS=${cbench_RUNS:-2}
+	is_lustre $file || return 0
 
-    print_opts cbench_DIR cbench_IDIRS cbench_RUNS
+	if [ -n "$params" ]; then
+		$LFS setstripe $params $file ||
+			error "setstripe $params failed"
+	fi
+	$LFS getstripe $file ||
+		error "getstripe $file failed"
+}
 
-    [ x$cbench_DIR = x ] &&
-        { skip_env "compilebench not found" && return; }
+run_compilebench() {
+	local dir=${1:-$DIR}
+	local cbench_DIR=${cbench_DIR:-""}
+	local cbench_IDIRS=${cbench_IDIRS:-2}
+	local cbench_RUNS=${cbench_RUNS:-2}
 
-    [ -e $cbench_DIR/compilebench ] || \
-        { skip_env "No compilebench build" && return; }
+	print_opts cbench_DIR cbench_IDIRS cbench_RUNS
 
+	[ x$cbench_DIR = x ] &&
+		skip_env "compilebench not found"
+
+	[ -e $cbench_DIR/compilebench ] ||
+		skip_env "No compilebench build"
+
+	# Space estimation:
+	# compile dir kernel-0	~1GB
+	# required space	~1GB * cbench_IDIRS
 	local space=$(df -P $dir | tail -n 1 | awk '{ print $4 }')
 	if [[ $space -le $((1024 * 1024 * cbench_IDIRS)) ]]; then
 		cbench_IDIRS=$((space / 1024 / 1024))
 		[[ $cbench_IDIRS -eq 0 ]] &&
-			skip_env "Need free space at least 1GB, have $space" &&
-			return
+			skip_env "Need free space at least 1GB, have $space"
 
-		echo "free space=$space, reducing initial dirs to $cbench_IDIRS"
+		echo "reducing initial dirs to $cbench_IDIRS"
 	fi
+	echo "free space = $space KB"
 
-    # FIXME:
-    # t-f _base needs to be modifyed to set properly tdir
-    # for new "test_foo" functions names
-    # local testdir=$DIR/$tdir
-    local testdir=$dir/d0.compilebench
-    mkdir -p $testdir
+	# FIXME:
+	# t-f _base needs to be modifyed to set properly tdir
+	# for new "test_foo" functions names
+	# local testdir=$DIR/$tdir
+	local testdir=$dir/d0.compilebench.$$
+	test_mkdir -p $testdir
+	setstripe_getstripe $testdir $cbench_STRIPEPARAMS
 
     local savePWD=$PWD
     cd $cbench_DIR
@@ -337,32 +353,32 @@ run_compilebench() {
 }
 
 run_metabench() {
-
-    METABENCH=${METABENCH:-$(which metabench 2> /dev/null || true)}
-    mbench_NFILES=${mbench_NFILES:-30400}
-    # threads per client
-    mbench_THREADS=${mbench_THREADS:-4}
+	local dir=${1:-$DIR}
+	local mntpt=${2:-$MOUNT}
+	METABENCH=${METABENCH:-$(which metabench 2> /dev/null || true)}
+	mbench_NFILES=${mbench_NFILES:-30400}
+	# threads per client
+	mbench_THREADS=${mbench_THREADS:-4}
 	mbench_OPTIONS=${mbench_OPTIONS:-}
+	mbench_CLEANUP=${mbench_CLEANUP:-true}
 
-    [ x$METABENCH = x ] &&
-        { skip_env "metabench not found" && return; }
+	[ x$METABENCH = x ] && skip_env "metabench not found"
 
-    # FIXME
-    # Need space estimation here.
+	print_opts METABENCH clients mbench_NFILES mbench_THREADS
 
-    print_opts METABENCH clients mbench_NFILES mbench_THREADS
+	local testdir=$dir/d0.metabench
+	test_mkdir -p $testdir
+	setstripe_getstripe $testdir $mbench_STRIPEPARAMS
 
-    local testdir=$DIR/d0.metabench
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
+	# mpi_run uses mpiuser
+	chmod 0777 $testdir
 
-    # -C             Run the file creation tests.
-    # -S             Run the file stat tests.
-    # -c nfile       Number of files to be used in each test.
-    # -k             Cleanup.  Remove the test directories.
-	local cmd="$METABENCH -w $testdir -c $mbench_NFILES -C -S -k $mbench_OPTIONS"
-    echo "+ $cmd"
+	# -C             Run the file creation tests. Creates zero byte files.
+	# -S             Run the file stat tests.
+	# -c nfile       Number of files to be used in each test.
+	# -k             Cleanup files when finished.
+	local cmd="$METABENCH -w $testdir -c $mbench_NFILES -C -S $mbench_OPTIONS"
+	echo "+ $cmd"
 
 	# find out if we need to use srun by checking $SRUN_PARTITION
 	if [ "$SRUN_PARTITION" ]; then
@@ -374,42 +390,43 @@ run_metabench() {
 			-np $((num_clients * $mbench_THREADS)) $cmd
 	fi
 
-    local rc=$?
-    if [ $rc != 0 ] ; then
-        error "metabench failed! $rc"
-    fi
-    rm -rf $testdir
+	local rc=$?
+	if [ $rc != 0 ] ; then
+		error "metabench failed! $rc"
+	fi
+
+	if $mbench_CLEANUP; then
+		rm -rf $testdir
+	else
+		mv $dir/d0.metabench $mntpt/_xxx.$(date +%s).d0.metabench
+	fi
 }
 
 run_simul() {
+	SIMUL=${SIMUL:=$(which simul 2> /dev/null || true)}
+	[ x$SIMUL = x ] && skip_env "simul not found"
+	[ "$NFSCLIENT" ] && skip "skipped for NFSCLIENT mode"
 
-    SIMUL=${SIMUL:=$(which simul 2> /dev/null || true)}
-    # threads per client
-    simul_THREADS=${simul_THREADS:-2}
-    simul_REP=${simul_REP:-20}
+	# threads per client
+	simul_THREADS=${simul_THREADS:-2}
+	simul_REP=${simul_REP:-20}
 
-    if [ "$NFSCLIENT" ]; then
-        skip "skipped for NFSCLIENT mode"
-        return
-    fi
+	# FIXME
+	# Need space estimation here.
 
-    [ x$SIMUL = x ] &&
-        { skip_env "simul not found" && return; }
+	print_opts SIMUL clients simul_REP simul_THREADS
 
-    # FIXME
-    # Need space estimation here.
+	local testdir=$DIR/d0.simul
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $simul_STRIPEPARAMS
 
-    print_opts SIMUL clients simul_REP simul_THREADS
+	# mpi_run uses mpiuser
+	chmod 0777 $testdir
 
-    local testdir=$DIR/d0.simul
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
+	# -n # : repeat each test # times
+	# -N # : repeat the entire set of tests # times
 
-    # -n # : repeat each test # times
-    # -N # : repeat the entire set of tests # times
-
-    local cmd="$SIMUL -d $testdir -n $simul_REP -N $simul_REP"
+	local cmd="$SIMUL -d $testdir -n $simul_REP -N $simul_REP"
 
 	echo "+ $cmd"
 	# find out if we need to use srun by checking $SRUN_PARTITION
@@ -430,40 +447,51 @@ run_simul() {
 }
 
 run_mdtest() {
+	MDTEST=${MDTEST:=$(which mdtest 2> /dev/null || true)}
+	[ x$MDTEST = x ] && skip_env "mdtest not found"
+	[ "$NFSCLIENT" ] && skip "skipped for NFSCLIENT mode"
 
-    MDTEST=${MDTEST:=$(which mdtest 2> /dev/null || true)}
-    # threads per client
-    mdtest_THREADS=${mdtest_THREADS:-2}
-    mdtest_nFiles=${mdtest_nFiles:-"100000"}
-    # We devide the files by number of core
-    mdtest_nFiles=$((mdtest_nFiles/mdtest_THREADS/num_clients))
-    mdtest_iteration=${mdtest_iteration:-1}
+	# threads per client
+	mdtest_THREADS=${mdtest_THREADS:-2}
+	mdtest_nFiles=${mdtest_nFiles:-"100000"}
+	# We devide the files by number of core
+	mdtest_nFiles=$((mdtest_nFiles/mdtest_THREADS/num_clients))
+	mdtest_iteration=${mdtest_iteration:-1}
 	local mdtest_custom_params=${mdtest_custom_params:-""}
+	local type=${1:-"ssf"}
 
-    local type=${1:-"ssf"}
+	local mdtest_Nmntp=${mdtest_Nmntp:-1}
 
-    if [ "$NFSCLIENT" ]; then
-        skip "skipped for NFSCLIENT mode"
-        return
-    fi
+	if [ $type = "ssf" ] && [ $mdtest_Nmntp -ne 1 ]; then
+		skip "shared directory mode is not compatible" \
+			"with multiple directory paths"
+	fi
 
-    [ x$MDTEST = x ] &&
-        { skip_env "mdtest not found" && return; }
+	# FIXME
+	# Need space estimation here.
 
-    # FIXME
-    # Need space estimation here.
+	print_opts MDTEST mdtest_iteration mdtest_THREADS mdtest_nFiles
 
-    print_opts MDTEST mdtest_iteration mdtest_THREADS mdtest_nFiles
+	local testdir=$DIR/d0.mdtest
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $mdtest_STRIPEPARAMS
+	chmod 0777 $testdir
 
-    local testdir=$DIR/d0.mdtest
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
+	for ((i=1; i<mdtest_Nmntp; i++)); do
+		zconf_mount_clients $clients $MOUNT$i "$mntopts" ||
+			error_exit "Failed $clients on $MOUNT$i"
+		local dir=$DIR$i/d0.mdtest$i
+		test_mkdir $dir
+		setstripe_getstripe $dir $mdtest_SETSTRIPEPARAMS
+		chmod 0777 $dir
+		testdir="$testdir@$dir"
+	done
+	# mpi_run uses mpiuser
 
-    # -i # : repeat each test # times
-    # -d   : test dir
-    # -n # : number of file/dir to create/stat/remove
-    # -u   : each process create/stat/remove individually
+	# -i # : repeat each test # times
+	# -d   : test dir
+	# -n # : number of file/dir to create/stat/remove
+	# -u   : each process create/stat/remove individually
 
 	local cmd="$MDTEST -d $testdir -i $mdtest_iteration \
 		-n $mdtest_nFiles $mdtest_custom_params"
@@ -485,71 +513,96 @@ run_mdtest() {
     if [ $rc != 0 ] ; then
         error "mdtest failed! $rc"
     fi
-    rm -rf $testdir
+	rm -rf $testdir
+	for ((i=1; i<mdtest_Nmntp; i++)); do
+		local dir=$DIR$i/d0.mdtest$i
+		rm -rf $dir
+		zconf_umount_clients $clients $MOUNT$i ||
+			error_exit "Failed umount $MOUNT$i on $clients"
+	done
 }
 
 run_connectathon() {
+	local dir=${1:-$DIR}
+	cnt_DIR=${cnt_DIR:-""}
+	cnt_NRUN=${cnt_NRUN:-10}
 
-    cnt_DIR=${cnt_DIR:-""}
-    cnt_NRUN=${cnt_NRUN:-10}
+	print_opts cnt_DIR cnt_NRUN
 
-    print_opts cnt_DIR cnt_NRUN
+	[ x$cnt_DIR = x ] && skip_env "connectathon dir not found"
+	[ -e $cnt_DIR/runtests ] || skip_env "No connectathon runtests found"
 
-    [ x$cnt_DIR = x ] &&
-        { skip_env "connectathon dir not found" && return; }
+	# Space estimation:
+	# "special" tests create a 30 MB file + misc. small files
+	# required space ~40 MB
+	local space=$(df -P $dir | tail -n 1 | awk '{ print $4 }')
+	if [[ $space -le $((1024 * 40)) ]]; then
+		skip_env "Need free space at least 40MB, have $space KB"
+	fi
+	echo "free space = $space KB"
 
-    [ -e $cnt_DIR/runtests ] || \
-        { skip_env "No connectathon runtests found" && return; }
+	local testdir=$dir/d0.connectathon
+	test_mkdir -p $testdir
+	setstripe_getstripe $testdir $cnt_STRIPEPARAMS
 
-    local testdir=$DIR/d0.connectathon
-    mkdir -p $testdir
+	local savePWD=$PWD
+	cd $cnt_DIR
 
-    local savePWD=$PWD
-    cd $cnt_DIR
-
-    #
-    # cthon options (must be in this order)
-    #
-    # -N numpasses - will be passed to the runtests script.  This argument
-    #         is optional.  It specifies the number of times to run
-    #         through the tests.
-    #
-    # One of these test types
-    #    -b  basic
-    #    -g  general
-    #    -s  special
-    #    -l  lock
-    #    -a  all of the above
-    #
-    # -f      a quick functionality test
-    #
-
-    tests="-b -g -s"
-    # Include lock tests unless we're running on nfsv4
-    local fstype=$(df -TP $testdir | awk 'NR==2  {print $2}')
-    echo "$testdir: $fstype"
-    if [[ $fstype != "nfs4" ]]; then
-        tests="$tests -l"
-    fi
-    echo "tests: $tests"
-    for test in $tests; do
-        local cmd="./runtests -N $cnt_NRUN $test -f $testdir"
-        local rc=0
-
-        log "$cmd"
-        eval $cmd
-        rc=$?
-        [ $rc = 0 ] || error "connectathon failed: $rc"
-    done
+	#
+	# To run connectathon:
+	# runtests [-a|-b|-g|-s|-l] [-f|-n|-t] [-N numpasses] [test-directory]
+	#
+	# One of the following test types
+	#    -b  basic
+	#    -g  general
+	#    -s  special
+	#    -l  lock
+	#    -a  all of the above
+	#
+	# -f  a quick functional test
+	# -n  suppress directory operations (mkdir and rmdir)
+	# -t  run with time statistics (default for basic tests)
+	#
+	# -N numpasses - specifies the number of times to run
+	#                the tests. Optional.
+
+	tests="-b -g -s"
+	# Include lock tests unless we're running on nfsv4
+	local fstype=$(df -TP $testdir | awk 'NR==2  {print $2}')
+	echo "$testdir: $fstype"
+	if [[ $fstype != "nfs4" ]]; then
+		tests="$tests -l"
+	fi
+	echo "tests: $tests"
+	for test in $tests; do
+		local cmd="sh ./runtests -N $cnt_NRUN $test -f $testdir"
+		local rc=0
+
+		log "$cmd"
+		eval $cmd
+		rc=$?
+		[ $rc = 0 ] || error "connectathon failed: $rc"
+	done
 
-    cd $savePWD
-    rm -rf $testdir
+	cd $savePWD
+	rm -rf $testdir
 }
 
 run_ior() {
 	local type=${1:="ssf"}
+	local dir=${2:-$DIR}
+	local testdir=$dir/d0.ior.$type
+	local nfs_srvmntpt=$3
+
+	if [ "$NFSCLIENT" ]; then
+		[[ -n $nfs_srvmntpt ]] ||
+			{ error "NFSCLIENT mode, but nfs exported dir"\
+				"is not set!" && return 1; }
+	fi
 
 	IOR=${IOR:-$(which IOR 2> /dev/null || true)}
+	[ x$IOR = x ] && skip_env "IOR not found"
+
 	# threads per client
 	ior_THREADS=${ior_THREADS:-2}
 	ior_iteration=${ior_iteration:-1}
@@ -573,38 +626,33 @@ run_ior() {
 			;;
 	esac
 
-	[ x$IOR = x ] &&
-        { skip_env "IOR not found" && return; }
-
 	# calculate the space in bytes
-	local space=$(df -B 1 -P $DIR | tail -n 1 | awk '{ print $4 }')
+	local space=$(df -B 1 -P $dir | tail -n 1 | awk '{ print $4 }')
 	local total_threads=$((num_clients * ior_THREADS))
 	echo "+ $ior_blockSize * $multiplier * $total_threads "
 	if [ $((space / 2)) -le \
 	     $((ior_blockSize * multiplier * total_threads)) ]; then
 		ior_blockSize=$((space / 2 / multiplier / total_threads))
-		[ $ior_blockSize -eq 0 ] && \
+		[ $ior_blockSize -eq 0 ] &&
 		skip_env "Need free space more than $((2 * total_threads)) \
-			 ${ior_blockUnit}: have $((space / multiplier))" &&
-			 return
+			 ${ior_blockUnit}: have $((space / multiplier))"
 
 		echo "(reduced blockSize to $ior_blockSize \
 		     ${ior_blockUnit} bytes)"
 	fi
 
-    print_opts IOR ior_THREADS ior_DURATION MACHINEFILE
+	print_opts IOR ior_THREADS ior_DURATION MACHINEFILE
+
+	test_mkdir -p $testdir
+
+	# mpi_run uses mpiuser
+	chmod 0777 $testdir
+	[[ "$ior_stripe_params" && -z "$ior_STRIPEPARAMS" ]] &&
+		ior_STRIPEPARAMS="$ior_stripe_params" &&
+		echo "got deprecated ior_stripe_params,"\
+			"use ior_STRIPEPARAMS instead"
+	setstripe_getstripe $testdir $ior_STRIPEPARAMS
 
-    local testdir=$DIR/d0.ior.$type
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
-    if [ "$NFSCLIENT" ]; then
-        setstripe_nfsserver $testdir -c -1 ||
-            { error "setstripe on nfsserver failed" && return 1; }
-    else
-        $LFS setstripe $testdir -c -1 ||
-            { error "setstripe failed" && return 2; }
-    fi
 	#
 	# -b N  blockSize --
 	#       contiguous bytes to write per task (e.g.: 8, 4K, 2M, 1G)"
@@ -617,9 +665,14 @@ run_ior() {
 	# -T    maxTimeDuration -- max time in minutes to run tests"
 	# -k    keepFile -- keep testFile(s) on program exit
 
-	local cmd="$IOR -a $ior_type -b ${ior_blockSize}${ior_blockUnit} \
+	local cmd
+	if [ -n "$ior_custom_params" ]; then
+		cmd="$IOR -o $testdir/iorData $ior_custom_params"
+	else
+		cmd="$IOR -a $ior_type -b ${ior_blockSize}${ior_blockUnit} \
 		-o $testdir/iorData -t $ior_xferSize -v -C -w -r -W \
 		-i $ior_iteration -T $ior_DURATION -k"
+	fi
 
 	[ $type = "fpp" ] && cmd="$cmd -F"
 
@@ -630,8 +683,9 @@ run_ior() {
 			-n $((num_clients * ior_THREADS)) -p $SRUN_PARTITION \
 			-- $cmd
 	else
+		mpi_ior_custom_threads=${mpi_ior_custom_threads:-"$((num_clients * ior_THREADS))"}
 		mpi_run ${MACHINEFILE_OPTION} ${MACHINEFILE} \
-			-np $((num_clients * $ior_THREADS)) $cmd
+			-np $mpi_ior_custom_threads $cmd
 	fi
 
     local rc=$?
@@ -642,40 +696,36 @@ run_ior() {
 }
 
 run_mib() {
+	MIB=${MIB:=$(which mib 2> /dev/null || true)}
+	[ "$NFSCLIENT" ] && skip "skipped for NFSCLIENT mode"
+	[ x$MIB = x ] && skip_env "MIB not found"
 
-    MIB=${MIB:=$(which mib 2> /dev/null || true)}
-    # threads per client
-    mib_THREADS=${mib_THREADS:-2}
-    mib_xferSize=${mib_xferSize:-1m}
-    mib_xferLimit=${mib_xferLimit:-5000}
-    mib_timeLimit=${mib_timeLimit:-300}
+	# threads per client
+	mib_THREADS=${mib_THREADS:-2}
+	mib_xferSize=${mib_xferSize:-1m}
+	mib_xferLimit=${mib_xferLimit:-5000}
+	mib_timeLimit=${mib_timeLimit:-300}
+	mib_STRIPEPARAMS=${mib_STRIPEPARAMS:-"-c -1"}
 
-    if [ "$NFSCLIENT" ]; then
-        skip "skipped for NFSCLIENT mode"
-        return
-    fi
+	print_opts MIB mib_THREADS mib_xferSize mib_xferLimit mib_timeLimit \
+		MACHINEFILE
 
-    [ x$MIB = x ] &&
-        { skip_env "MIB not found" && return; }
+	local testdir=$DIR/d0.mib
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $mib_STRIPEPARAMS
 
-    print_opts MIB mib_THREADS mib_xferSize mib_xferLimit mib_timeLimit \
-        MACHINEFILE
+	# mpi_run uses mpiuser
+	chmod 0777 $testdir
 
-    local testdir=$DIR/d0.mib
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
-    $LFS setstripe $testdir -c -1 ||
-        { error "setstripe failed" && return 2; }
-    #
-    # -I    Show intermediate values in output
-    # -H    Show headers in output
-    # -L    Do not issue new system calls after this many seconds
-    # -s    Use system calls of this size
-    # -t    test dir
-    # -l    Issue no more than this many system calls
-    local cmd="$MIB -t $testdir -s $mib_xferSize -l $mib_xferLimit \
-        -L $mib_timeLimit -HI -p mib.$(date +%Y%m%d%H%M%S)"
+	#
+	# -I    Show intermediate values in output
+	# -H    Show headers in output
+	# -L    Do not issue new system calls after this many seconds
+	# -s    Use system calls of this size
+	# -t    test dir
+	# -l    Issue no more than this many system calls
+	local cmd="$MIB -t $testdir -s $mib_xferSize -l $mib_xferLimit \
+		-L $mib_timeLimit -HI -p mib.$(date +%Y%m%d%H%M%S)"
 
 	echo "+ $cmd"
 	# find out if we need to use srun by checking $SRUN_PARTITION
@@ -696,34 +746,30 @@ run_mib() {
 }
 
 run_cascading_rw() {
+	CASC_RW=${CASC_RW:-$(which cascading_rw 2> /dev/null || true)}
+	[ x$CASC_RW = x ] && skip_env "cascading_rw not found"
+	[ "$NFSCLIENT" ] && skip "skipped for NFSCLIENT mode"
 
-    CASC_RW=${CASC_RW:-$(which cascading_rw 2> /dev/null || true)}
-    # threads per client
-    casc_THREADS=${casc_THREADS:-2}
-    casc_REP=${casc_REP:-300}
-
-    if [ "$NFSCLIENT" ]; then
-        skip "skipped for NFSCLIENT mode"
-        return
-    fi
+	# threads per client
+	casc_THREADS=${casc_THREADS:-2}
+	casc_REP=${casc_REP:-300}
 
-    [ x$CASC_RW = x ] &&
-        { skip_env "cascading_rw not found" && return; }
+	# FIXME
+	# Need space estimation here.
 
-    # FIXME
-    # Need space estimation here.
+	print_opts CASC_RW clients casc_THREADS casc_REP MACHINEFILE
 
-    print_opts CASC_RW clients casc_THREADS casc_REP MACHINEFILE
+	local testdir=$DIR/d0.cascading_rw
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $casc_STRIPEPARAMS
 
-    local testdir=$DIR/d0.cascading_rw
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
+	# mpi_run uses mpiuser
+	chmod 0777 $testdir
 
-    # -g: debug mode
-    # -n: repeat test # times
+	# -g: debug mode
+	# -n: repeat test # times
 
-    local cmd="$CASC_RW -g -d $testdir -n $casc_REP"
+	local cmd="$CASC_RW -g -d $testdir -n $casc_REP"
 
 	echo "+ $cmd"
 	mpi_run ${MACHINEFILE_OPTION} ${MACHINEFILE} \
@@ -737,35 +783,31 @@ run_cascading_rw() {
 }
 
 run_write_append_truncate() {
+	[ "$NFSCLIENT" ] && skip "skipped for NFSCLIENT mode"
+	# location is lustre/tests dir
+	if ! which write_append_truncate > /dev/null 2>&1 ; then
+		skip_env "write_append_truncate not found"
+	fi
 
-    # threads per client
-    write_THREADS=${write_THREADS:-8}
-    write_REP=${write_REP:-10000}
+	# threads per client
+	write_THREADS=${write_THREADS:-8}
+	write_REP=${write_REP:-10000}
 
-    if [ "$NFSCLIENT" ]; then
-        skip "skipped for NFSCLIENT mode"
-        return
-    fi
+	# FIXME
+	# Need space estimation here.
 
-    # location is lustre/tests dir
-    if ! which write_append_truncate > /dev/null 2>&1 ; then
-        skip_env "write_append_truncate not found"
-        return
-    fi
+	local testdir=$DIR/d0.write_append_truncate
+	local file=$testdir/f0.wat
 
-    # FIXME
-    # Need space estimation here.
+	print_opts clients write_REP write_THREADS MACHINEFILE
 
-    local testdir=$DIR/d0.write_append_truncate
-    local file=$testdir/f0.wat
+	test_mkdir $testdir
+	# mpi_run uses mpiuser
+	setstripe_getstripe $testdir $write_STRIPEPARAMS
 
-    print_opts clients write_REP write_THREADS MACHINEFILE
+	chmod 0777 $testdir
 
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
-
-    local cmd="write_append_truncate -n $write_REP $file"
+	local cmd="write_append_truncate -n $write_REP $file"
 
 	echo "+ $cmd"
 	mpi_run ${MACHINEFILE_OPTION} ${MACHINEFILE} \
@@ -780,32 +822,30 @@ run_write_append_truncate() {
 }
 
 run_write_disjoint() {
+	WRITE_DISJOINT=${WRITE_DISJOINT:-$(which write_disjoint 2> /dev/null ||
+					   true)}
+	[ x$WRITE_DISJOINT = x ] && skip_env "write_disjoint not found"
+	[ "$NFSCLIENT" ] && skip "skipped for NFSCLIENT mode"
 
-    WRITE_DISJOINT=${WRITE_DISJOINT:-$(which write_disjoint \
-        2> /dev/null || true)}
-    # threads per client
-    wdisjoint_THREADS=${wdisjoint_THREADS:-4}
-    wdisjoint_REP=${wdisjoint_REP:-10000}
+	# threads per client
+	wdisjoint_THREADS=${wdisjoint_THREADS:-4}
+	wdisjoint_REP=${wdisjoint_REP:-10000}
+	chunk_size_limit=$1
 
-    if [ "$NFSCLIENT" ]; then
-        skip "skipped for NFSCLIENT mode"
-        return
-    fi
+	# FIXME
+	# Need space estimation here.
 
-    [ x$WRITE_DISJOINT = x ] &&
-        { skip_env "write_disjoint not found" && return; }
+	print_opts WRITE_DISJOINT clients wdisjoint_THREADS wdisjoint_REP \
+		MACHINEFILE
+	local testdir=$DIR/d0.write_disjoint
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $wdisjoint_STRIPEPARAMS
 
-    # FIXME
-    # Need space estimation here.
+	# mpi_run uses mpiuser
+	chmod 0777 $testdir
 
-    print_opts WRITE_DISJOINT clients wdisjoint_THREADS wdisjoint_REP \
-        MACHINEFILE
-    local testdir=$DIR/d0.write_disjoint
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
-
-    local cmd="$WRITE_DISJOINT -f $testdir/file -n $wdisjoint_REP"
+	local cmd="$WRITE_DISJOINT -f $testdir/file -n $wdisjoint_REP -m \
+			$chunk_size_limit"
 
 	echo "+ $cmd"
 	mpi_run ${MACHINEFILE_OPTION} ${MACHINEFILE} \
@@ -819,29 +859,26 @@ run_write_disjoint() {
 }
 
 run_parallel_grouplock() {
+	PARALLEL_GROUPLOCK=${PARALLEL_GROUPLOCK:-$(which parallel_grouplock \
+	    2> /dev/null || true)}
 
-    PARALLEL_GROUPLOCK=${PARALLEL_GROUPLOCK:-$(which parallel_grouplock \
-        2> /dev/null || true)}
-    parallel_grouplock_MINTASKS=${parallel_grouplock_MINTASKS:-5}
+	[ x$PARALLEL_GROUPLOCK = x ] && skip "PARALLEL_GROUPLOCK not found"
+	[ "$NFSCLIENT" ] && skip "skipped for NFSCLIENT mode"
 
-    if [ "$NFSCLIENT" ]; then
-        skip "skipped for NFSCLIENT mode"
-        return
-    fi
+	parallel_grouplock_MINTASKS=${parallel_grouplock_MINTASKS:-5}
 
-    [ x$PARALLEL_GROUPLOCK = x ] &&
-        { skip "PARALLEL_GROUPLOCK not found" && return; }
+	print_opts clients parallel_grouplock_MINTASKS MACHINEFILE
 
-    print_opts clients parallel_grouplock_MINTASKS MACHINEFILE
+	local testdir=$DIR/d0.parallel_grouplock
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $parallel_grouplock_STRIPEPARAMS
 
-    local testdir=$DIR/d0.parallel_grouplock
-    mkdir -p $testdir
-    # mpi_run uses mpiuser
-    chmod 0777 $testdir
+	# mpi_run uses mpiuser
+	chmod 0777 $testdir
 
-    local cmd
-    local status=0
-    local subtest
+	local cmd
+	local status=0
+	local subtest
 	for i in $(seq 12); do
 		subtest="-t $i"
 		local cmd="$PARALLEL_GROUPLOCK -g -v -d $testdir $subtest"
@@ -878,35 +915,33 @@ cleanup_statahead () {
 }
 
 run_statahead () {
+	if [[ -n $NFSCLIENT ]]; then
+		skip "Statahead testing is not supported on NFS clients."
+	fi
+	[ x$MDSRATE = x ] && skip_env "mdsrate not found"
 
-    statahead_NUMMNTPTS=${statahead_NUMMNTPTS:-5}
-    statahead_NUMFILES=${statahead_NUMFILES:-500000}
-
-    if [[ -n $NFSCLIENT ]]; then
-        skip "Statahead testing is not supported on NFS clients."
-        return 0
-    fi
+	statahead_NUMMNTPTS=${statahead_NUMMNTPTS:-5}
+	statahead_NUMFILES=${statahead_NUMFILES:-500000}
 
-    [ x$MDSRATE = x ] &&
-        { skip_env "mdsrate not found" && return; }
+	print_opts MDSRATE clients statahead_NUMMNTPTS statahead_NUMFILES
 
-    print_opts MDSRATE clients statahead_NUMMNTPTS statahead_NUMFILES
+	# create large dir
 
-    # create large dir
+	# do not use default "d[0-9]*" dir name
+	# to avoid of rm $statahead_NUMFILES (500k) files in t-f cleanup
+	local dir=dstatahead
+	local testdir=$DIR/$dir
 
-    # do not use default "d[0-9]*" dir name
-    # to avoid of rm $statahead_NUMFILES (500k) files in t-f cleanup
-    local dir=dstatahead
-    local testdir=$DIR/$dir
+	# cleanup only if dir exists
+	# cleanup only $statahead_NUMFILES number of files
+	# ignore the other files created by someone else
+	[ -d $testdir ] &&
+	mdsrate_cleanup $((num_clients * 32)) $MACHINEFILE \
+		$statahead_NUMFILES $testdir 'f%%d' --ignore
 
-    # cleanup only if dir exists
-    # cleanup only $statahead_NUMFILES number of files
-    # ignore the other files created by someone else
-    [ -d $testdir ] &&
-        mdsrate_cleanup $((num_clients * 32)) $MACHINEFILE \
-            $statahead_NUMFILES $testdir 'f%%d' --ignore
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $statahead_STRIPEPARAMS
 
-    mkdir -p $testdir
     # mpi_run uses mpiuser
     chmod 0777 $testdir
 
@@ -957,3 +992,341 @@ run_statahead () {
     rm -rf $testdir
     cleanup_statahead $clients $mntpt_root $num_mntpts
 }
+
+cleanup_rr_alloc () {
+	trap 0
+	local clients="$1"
+	local mntpt_root="$2"
+	local rr_alloc_MNTPTS="$3"
+	local mntpt_dir=$(dirname ${mntpt_root})
+
+	for i in $(seq 0 $((rr_alloc_MNTPTS - 1))); do
+		zconf_umount_clients $clients ${mntpt_root}$i ||
+		error_exit "Failed to umount lustre on ${mntpt_root}$i"
+	done
+	do_nodes $clients "rm -rf $mntpt_dir"
+}
+
+run_rr_alloc() {
+	remote_mds_nodsh && skip "remote MDS with nodsh"
+	echo "===Test gives more reproduction percentage if number of "\
+		"client and ost are more. Test with 44 or more clients "\
+		"and 73 or more OSTs gives 100% reproduction rate=="
+
+	RR_ALLOC=${RR_ALLOC:-$(which rr_alloc 2> /dev/null || true)}
+	[ x$RR_ALLOC = x ] && skip_env "rr_alloc not found"
+	declare -a diff_max_min_arr
+	# foeo = file on each ost. calc = calculated.
+	local ost_idx
+	local foeo_calc
+	local qos_prec_objs="${TMP}/qos_and_precreated_objects"
+	local rr_alloc_NFILES=${rr_alloc_NFILES:-555}
+	local rr_alloc_MNTPTS=${rr_alloc_MNTPTS:-11}
+	local total_MNTPTS=$((rr_alloc_MNTPTS * num_clients))
+	local mntpt_root="${TMP}/rr_alloc_mntpt/lustre"
+	test_mkdir $DIR/$tdir
+	setstripe_getstripe $DIR/$tdir $rr_alloc_STRIPEPARAMS
+
+	chmod 0777 $DIR/$tdir
+
+	trap "cleanup_rr_alloc $clients $mntpt_root $rr_alloc_MNTPTS" EXIT ERR
+	for i in $(seq 0 $((rr_alloc_MNTPTS - 1))); do
+		zconf_mount_clients $clients ${mntpt_root}$i $MOUNT_OPTS ||
+		error_exit "Failed to mount lustre on ${mntpt_root}$i $clients"
+	done
+
+	local cmd="$RR_ALLOC $mntpt_root/$tdir/ash $rr_alloc_NFILES \
+		$num_clients"
+
+	# Save mdt values, set threshold to 100% i.e always Round Robin,
+	# restore the saved values again after creating files...
+	save_lustre_params mds1 \
+		"lov.$FSNAME-MDT0000*.qos_threshold_rr" > $qos_prec_objs
+	save_lustre_params mds1 \
+		"osp.$FSNAME-OST*-osc-MDT0000.create_count" >> $qos_prec_objs
+
+	local old_create_count=$(grep -e "create_count" $qos_prec_objs |
+		cut -d'=' -f 2 | sort -nr | head -n1)
+
+	# Make sure that every osp has enough precreated objects for the file
+	# creation app
+
+	# create_count is always set to the power of 2 only, so if the files
+	# per OST are not multiple of that then it will be set to nearest
+	# lower power of 2. So set 'create_count' to the upper power of 2.
+
+	foeo_calc=$((rr_alloc_NFILES * total_MNTPTS / OSTCOUNT))
+	local create_count=$((2 * foeo_calc))
+	do_facet mds1 "$LCTL set_param -n \
+		lov.$FSNAME-MDT0000*.qos_threshold_rr 100 \
+		osp.$FSNAME-OST*-osc-MDT0000.create_count $create_count" ||
+		error "failed while setting qos_threshold_rr & creat_count"
+
+	# Create few temporary files in order to increase the precreated objects
+	# to a desired value, before starting 'rr_alloc' app. Due to default
+	# value 32 of precreation count (OST_MIN_PRECREATE=32), precreated
+	# objects available are 32 initially, these gets exhausted very soon,
+	# which causes skip of some osps when very large number of files
+	# is created per OSTs.
+	createmany -o $DIR/$tdir/foo- $(((old_create_count + 1) * OSTCOUNT)) \
+		> /dev/null
+	rm -f /$DIR/$tdir/foo*
+
+	# Check for enough precreated objects... We should not
+	# fail here because code(osp_precreate.c) also takes care of it.
+	# So we have good chances of passing test even if this check fails.
+	local mdt_idx=0
+	for ost_idx in $(seq 0 $((OSTCOUNT - 1))); do
+		[[ $(precreated_ost_obj_count $mdt_idx $ost_idx) -ge \
+			$foeo_calc ]] || echo "Warning: test may fail because" \
+			"of lack of precreated objects on OST${ost_idx}"
+	done
+
+	if [[ $total_MNTPTS -ne 0 ]]; then
+		# Now start the actual file creation app.
+		mpi_run "-np $total_MNTPTS" $cmd || return
+	else
+		error "No mount point"
+	fi
+
+	restore_lustre_params < $qos_prec_objs
+	rm -f $qos_prec_objs
+
+	diff_max_min_arr=($($LFS getstripe -r $DIR/$tdir/ |
+		grep "lmm_stripe_offset:" | awk '{print $2}' | sort -n |
+		uniq -c | awk 'NR==1 {min=max=$1} \
+		{ $1<min ? min=$1 : min; $1>max ? max=$1 : max} \
+		END {print max-min, max, min}'))
+
+	rm -rf $DIR/$tdir
+
+	# In-case of fairly large number of file creation using RR (round-robin)
+	# there can be two cases in which deviation will occur than the regular
+	# RR algo behaviour-
+	# 1- When rr_alloc does not start right with 'lqr_start_count' reseeded,
+	# 2- When rr_alloc does not finish with 'lqr_start_count == 0'.
+	# So the difference of files b/w any 2 OST should not be more than 2.
+	[[ ${diff_max_min_arr[0]} -le 2 ]] ||
+		error "Uneven distribution detected: difference between" \
+		"maximum files per OST (${diff_max_min_arr[1]}) and" \
+		"minimum files per OST (${diff_max_min_arr[2]}) must not be" \
+		"greater than 2"
+}
+
+run_fs_test() {
+	# fs_test.x is the default name for exe
+	FS_TEST=${FS_TEST:=$(which fs_test.x 2> /dev/null || true)}
+
+	local clients=${CLIENTS:-$(hostname)}
+	local testdir=$DIR/d0.fs_test
+	local file=${testdir}/fs_test
+	fs_test_threads=${fs_test_threads:-2}
+	fs_test_type=${fs_test_type:-1}
+	fs_test_nobj=${fs_test_nobj:-10}
+	fs_test_check=${fs_test_check:-3}
+	fs_test_strided=${fs_test_strided:-1}
+	fs_test_touch=${fs_test_touch:-3}
+	fs_test_supersize=${fs_test_supersize:-1}
+	fs_test_op=${fs_test_op:-write}
+	fs_test_barriers=${fs_test_barriers:-bopen,bwrite,bclose}
+	fs_test_io=${fs_test_io:-mpi}
+	fs_test_objsize=${fs_test_objsize:-100}
+	fs_test_objunit=${fs_test_objunit:-1048576} # 1 mb
+	fs_test_ndirs=${fs_test_ndirs:-80000}
+
+	[ x$FS_TEST = x ] && skip "FS_TEST not found"
+
+	# Space estimation  in bytes
+	local space=$(df -B 1 -P $dir | tail -n 1 | awk '{ print $4 }')
+	local total_threads=$((num_clients * fs_test_threads))
+	echo "+ $fs_test_objsize * $fs_test_objunit * $total_threads "
+	if [ $((space / 2)) -le \
+		$((fs_test_objsize * fs_test_objunit * total_threads)) ]; then
+			fs_test_objsize=$((space / 2 / fs_test_objunit / \
+				total_threads))
+			[ $fs_test_objsize -eq 0 ] &&
+			skip_env "Need free space more than \
+				$((2 * total_threads * fs_test_objunit)) \
+				: have $((space / fs_test_objunit))"
+
+			echo "(reduced objsize to \
+				$((fs_test_objsize * fs_test_objunit)) bytes)"
+	fi
+
+	print_opts FS_TEST clients fs_test_threads fs_test_objsize MACHINEFILE
+
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $fs_test_STRIPEPARAMS
+
+	# mpi_run uses mpiuser
+	chmod 0777 $testdir
+
+	# --nodb          Turn off the database code at runtime
+	# -g --target     The path to the data file
+	# -t --type       Whether to do N-N (1) or N-1 (2)
+	# -n --nobj       The number of objects written/read by each proc
+	# -z --size       The size of each object
+	# -d ---num_nn_dirs Number of subdirectories for files
+	# -C --check      Check every byte using argument 3.
+	# --collective    Whether to use collective I/O (for N-1, mpi-io only)
+	# -s --strided    Whether to use a strided pattern (for N-1 only)
+	# -T --touch      Touch every byte using argument 3
+	# -o --op         Whether to read only (read) or write only (write)
+	# -b --barriers   When to barrier.
+	# -i --io         Use POSIX, MPI, or PLFS IO routines (mpi|posix|plfs)
+	# -S --supersize  Specify how many objects per superblock
+
+	local cmd="$FS_TEST -nodb -g $file -t $fs_test_type -n $fs_test_nobj \
+		-z $((fs_test_objsize * fs_test_objunit)) -d $fs_test_ndirs \
+		-C $fs_test_check -collective -s $fs_test_strided \
+		-T $fs_test_touch -o $fs_test_op -b $fs_test_barriers \
+		-i $fs_test_io -S $fs_test_supersize"
+
+	echo "+ $cmd"
+	mpi_run "-np $((num_clients * fs_test_threads))" $cmd
+
+	local rc=$?
+	if [ $rc != 0 ] ; then
+		error "fs_test failed! $rc"
+	fi
+
+	rm -rf $testdir
+}
+
+ior_mdtest_parallel() {
+	local rc1=0
+	local rc2=0
+	local type=$1
+
+	run_ior $type &
+	local pids=$!
+
+	run_mdtest $type || rc2=$?
+	[[ $rc2 -ne 0 ]] && echo "mdtest failed with error $rc2"
+
+	wait $pids || rc1=$?
+	[[ $rc1 -ne 0 ]] && echo "ior failed with error $rc1"
+
+	[[ $rc1 -ne 0 || $rc2 -ne 0 ]] && return 1
+	return 0
+}
+
+run_fio() {
+	FIO=${FIO:=$(which fio 2> /dev/null || true)}
+
+	local clients=${CLIENTS:-$(hostname)}
+	local fio_jobNum=${fio_jobNum:-4}
+	local fio_jobFile=${fio_jobFile:-$TMP/fiojobfile.$(date +%s)}
+	local fio_bs=${fio_bs:-1}
+	local testdir=$DIR/d0.fio
+	local file=${testdir}/fio
+	local runtime=60
+	local propagate=false
+
+	[ "$SLOW" = "no" ] || runtime=600
+
+	[ x$FIO = x ] && skip_env "FIO not found"
+
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $fio_STRIPEPARAMS
+
+	# use fio job file if exists,
+	# create a simple one if missing
+	if ! [ -f $fio_jobFile ]; then
+		cat >> $fio_jobFile <<EOF
+[global]
+rw=randwrite
+size=128m
+time_based=1
+runtime=$runtime
+filename=${file}_\$(hostname)
+EOF
+		# bs size increased by $i for each job
+		for ((i=1; i<=fio_jobNum; i++)); do
+			cat >> $fio_jobFile <<EOF
+
+[job$i]
+bs=$(( fio_bs * i ))m
+EOF
+		done
+		# job file is created, should be propagated to all clients
+		propagate=true
+	fi
+
+
+	# propagate the job file if not all clients have it yet or
+	# if the job file was created during the test run
+	if ! do_nodesv $clients " [ -f $fio_jobFile ] " ||
+	   $propagate; then
+		local cfg=$(cat $fio_jobFile)
+		do_nodes $clients "echo \\\"$cfg\\\" > ${fio_jobFile}" ||
+			error "job file $fio_jobFile is not propagated"
+		do_nodesv $clients "cat ${fio_jobFile}"
+	fi
+
+	cmd="$FIO $fio_jobFile"
+	echo "+ $cmd"
+
+	log "clients: $clients $cmd"
+
+	local rc=0
+	do_nodesv $clients "$cmd "
+	rc=$?
+
+	[ $rc = 0 ] || error "fio failed: $rc"
+	rm -rf $testdir
+}
+
+run_xdd() {
+	XDD=${XDD:=$(which xdd 2> /dev/null || true)}
+
+	local clients=${CLIENTS:-$(hostname)}
+	local testdir=$DIR/d0.xdd
+	xdd_queuedepth=${xdd_queuedepth:-4}
+	xdd_blocksize=${xdd_blocksize:-512}
+	xdd_reqsize=${xdd_reqsize:-128}
+	xdd_mbytes=${xdd_mbytes:-100}
+	xdd_passes=${xdd_passes:-40}
+	xdd_rwratio=${xdd_rwratio:-0}
+	xdd_ntargets=${xdd_ntargets:-6}
+	local xdd_custom_params=${xdd_custom_params:-"-dio -stoponerror \
+		-maxpri -minall -noproclock -nomemlock"}
+
+	[ x$XDD = x ] && skip "XDD not found"
+
+	print_opts XDD clients xdd_queuedepth xdd_blocksize xdd_reqsize \
+		xdd_mbytes xdd_passes xdd_rwratio
+
+	test_mkdir $testdir
+	setstripe_getstripe $testdir $xdd_STRIPEPARAMS
+
+	local files=""
+	# Target files creates based on the given number of targets
+	for (( i=0; i < $xdd_ntargets; i++ ))
+	do
+		files+="${testdir}/xdd"$i" "
+	done
+
+	# -targets      specifies the devices or files to perform operation
+	# -reqsize      number of 'blocks' per operation
+	# -mbytes       number of 1024*1024-byte blocks to transfer
+	# -blocksize    size of a single 'block'
+	# -passes       number of times to read mbytes
+	# -queuedepth   number of commands to queue on the target
+	# -rwratio      percentage of read to write operations
+	# -verbose      will print out statistics on each pass
+
+	local cmd="$XDD -targets $xdd_ntargets $files -reqsize $xdd_reqsize \
+		-mbytes $xdd_mbytes -blocksize $xdd_blocksize \
+		-passes $xdd_passes -queuedepth $xdd_queuedepth \
+		-rwratio $xdd_rwratio -verbose $xdd_custom_params"
+	echo "+ $cmd"
+
+	local rc=0
+	do_nodesv $clients "$cmd "
+	rc=$?
+
+	[ $rc = 0 ] || error "xdd failed: $rc"
+
+	rm -rf $testdir
+}