https://bugzilla.novell.com/show_bug.cgi?id=257073 Summary: NFSv4 freeze the machine running simple concurrent access Product: openSUSE 10.2 Version: Final Platform: All OS/Version: Linux Status: NEW Severity: Major Priority: P5 - None Component: Basesystem AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: vincent.roqueta@bull.net QAContact: qa@suse.de Running the iobench test script on one single machine freeze the machine in a few minutes. Details: -------- Server export : /tmp *(rw,wdelay,nohide,no_root_squash,fsid=0) Test : iobench.sh -d /mnt -m -t write The iobench.sh script ---------------------------------- #!/bin/bash #set -vx # default values for params dir=/mnt/lustre jobs=16 size=3000 chunk=100 numfiles=10000 # hardcoded values fsstress=~saffroy/lustre/tests/fstest/fsstress-$(arch) rwcheck=~saffroy/lustre/tests/rwcheck seed=1 tool=$(basename $0) argv="$@" usage() { echo "usage: $tool [opts] -m machine1,machine2,... -t test1,test2,..." echo " -d <dir> default=$dir" echo " -j <job count> (per machine) default=$jobs" echo " -s <file size> (MB, one per job) default=$size" echo " -c <chunk size> (MB) default=$chunk" echo " -n <# of creat> (per job) default=$numfiles" echo " -q decrease verbosity" echo " -p print subcommands" echo " -r DON'T run subcommands" echo " tests: read write touch creat rm" exit 1 } trace() { [ -z "$bot" ] && echo "$(date +'%Y/%m/%d %H:%M:%S') $@" } fork_job() { if [ -n "$echo" ]; then echo "exec: $@" fi if [ -z "$norun" -o -z "$bot" ]; then if [ -n "$quiet" ]; then exec "$@" &>/dev/null & else exec sh -c '"$@" 2>&1|egrep -v "records (in|out)"' "$1" "$@" & fi fi children="$children $!" } wait_jobs() { wait unset children } cleanup() { echo "Aborting on signal!" if [ -n "$children" ]; then echo "Killing child processes: $children" kill $children fi exit 1 } trap cleanup sigint sighup args=$(getopt -o "m:d:j:s:c:t:b:n:qpr" -- "$@") [ $? = 0 ] || usage eval set -- "$args" while : ; do case "$1" in "-m") machines=$2 ; shift 2 ;; "-d") dir=$2 ; shift 2 ;; "-j") jobs=$2 ; shift 2 ;; "-s") size=$2 ; shift 2 ;; "-c") chunk=$2 ; shift 2 ;; "-t") tests=$2 ; shift 2 ;; "-b") bot=$2 ; shift 2 ;; "-n") numfiles=$2 ; shift 2 ;; "-q") quiet=1; shift ;; "-p") echo=1; shift ;; "-r") norun=1; shift ;; "--") shift ; break ;; *) echo "$tool: invalid argument '$1'" ; exit 1 ;; esac done [ $# != 0 -o -z "$machines" -o -z "$tests" ] && usage [ -n "$bot" ] && machines=127.0.0.1 count=$(($size/$chunk)) tests=$(echo $tests|tr ',' ' ') machines=$(echo $machines|tr ',' ' ') numnodes=0 for m in $machines ; do ping -q -c 1 $m > /dev/null if [ $? != 0 ]; then echo "$tool: $m down? exiting" exit 1 fi numnodes=$(($numnodes+1)) done total=$(( $numnodes*$size*$jobs )) totalfiles=$(( $numnodes*$numfiles*$jobs )) test_write() { for i in $(seq $jobs) ; do fork_job dd if=/dev/zero of=$dir/$tool-$bot-$i bs=${chunk}M count=$count done } test_read() { for i in $(seq $jobs) ; do fork_job dd of=/dev/null if=$dir/$tool-$bot-$i bs=${chunk}M count=$count done } test_writechk() { for i in $(seq $jobs) ; do fork_job $rwcheck -c $chunk $dir/$tool-$bot-$i $count -w done } test_readchk() { for i in $(seq $jobs) ; do fork_job $rwcheck -c $chunk $dir/$tool-$bot-$i $count done } test_touch() { for i in $(seq $jobs) ; do fork_job touch $dir/$tool-$bot-$i done } test_creat() { fork_job $fsstress -z -f creat=1 -d $dir/$tool-$bot-creat -p $jobs -n $numfiles -s $seed } test_rm() { for i in $(seq $jobs) ; do if [ -f $dir/$tool-$bot-$i ]; then fork_job rm $dir/$tool-$bot-$i fi done if [ -d $dir/$tool-$bot-creat ]; then fork_job sh -ec '\ cd "$1" ; find "$2" -type f | xargs -r -P "$3" rm ; \ rm -r "$2" ' -- "$dir" "$tool-$bot-creat" $jobs fi } test_dummy() { fork_job sh -vfxc 'echo "dummy: dir=$1"|tr [a-z] [A-Z]' -- $dir } trace "Writing/reading files under $dir on $numnodes nodes" for t in $tests; do case "$t" in "write"*|"read"*) trace "$jobs jobs per node, one $size MB file per job, total size $total MB" ;; "creat") trace "$jobs jobs per node, create $numfiles files per job, total $totalfiles files" ;; esac trace "test_$t: starting jobs..." start=$(date +%s) case "$t" in "write"|"read"|"writechk"|"readchk"|"touch"|"creat"|"rm"|"dummy") if [ -z "$bot" ]; then for m in $machines ; do fork_job ssh $m $0 $argv -b $m -t $t done else eval test_$t fi ;; *) echo "unknown test type: $t" usage ;; esac trace "test_$t: all jobs started" wait_jobs end=$(date +%s) trace "test_$t: all jobs done" duration=$(($end-$start+1)) case "$t" in "write"*|"read"*) throughput=$(( $total/$duration )) trace "test_$t: total time $duration seconds, global throughput $throughput MB/sec" ;; "rm") trace "test_$t: total time $duration seconds" ;; "creat") rate=$(( $totalfiles/$duration )) trace "test_$t: total time $duration seconds, creation rate $rate files/sec" ;; esac done ---------------------------------- -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.