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rwtest.sh
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rwtest.sh
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#!/bin/sh
#
# Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
#
# rwtest - a shell wrapper around iogen and doio
#
trap "exit 0" INT # Until the smarter signal handler is engaged, below.
Prog=$(basename $0)
iOpts=""
dOpts=""
LockRegion=""
Nprocs=1
Files=""
Remove_Test_Files=""
Files_To_Remove=""
MPPrun=""
usage()
{
echo "$Prog: [-chq] [-N name] [ iogen options ] [ doio options ] files" >&2
}
help()
{
echo "\
-c Cleanup test files created by this invocation on exit.
Default is to leave them.
-h This help - ignore all other options/arguments
-F Only process filenames - does not run iogen & doio.
-P Places Not used
-S Scenario Execute an internal scenario.
-N Name Pan-style name to be printed with error messages.
Options passed through to iogen:
-[afiLmOstT] arg
-o
-q Set rwtest to be quiet and pass the flag on to iogen.
Options passed through to doio:
-D[rmMVUC] arg
-D[aekv]
-n nprocs # procs to do simultanious io to the test files.
Default is 1. If -n is non-zero, doio's -k option (use
file locking) is forced.
files Files to test on. File names have the following fomat:
[ size: ] path
[ free% [ max size ] : ] path
If no size is specified, the files must exist
and the contents will be overwritten if testing write or
writea system calls. If a size is supplied, an attempt to
create/grow/shrink path to the desired size will be made.
size is an integer which defaults to bytes, but may be
suffixed by 'b', 'k', or 'm' for blocks (4096 byte units),
kilobytes (1024 byte units), or megabytes (2^20 byte units).
If the size is a percentage, df is used to find how much
free space there is (in blocks), and uses that. The maximum
size is implied to be in blocks.
" >&2
}
killkids()
{
trap "killkids" INT
if [[ -z $didkids ]]
then
didkids=done
kill -INT -$$
fi
}
cleanup_and_exit()
{
if [ -n "$Remove_Test_Files" ]
then
if [ -n "$Files_To_Remove" ]
then
rm -f $Files_To_Remove
fi
fi
exit $1
}
while (( $# > 0 ))
do case $1 in
-c) Remove_Test_Files=yes
;;
-d) debug=$2
shift
;;
-h) help
exit 0
;;
-F)
opt_F="-F" # only process filenames
;;
-P)
PLACES=$2
shift
;;
-S) Scenario=$2
shift
opt_S="-S"
;;
-N) Name="($2)"
iOpts="$iOpts -N $2"
dOpts="$dOpts -N $2"
shift
;;
# iogen Options to pass thru ... options with an argument
-[afiLmOstT] )
iOpts="$iOpts $1 $2"
shift
;;
# iogen Options to pass thru ... just the option
-[o] )
iOpts="$iOpts $1"
;;
# iogen options to look at
-q)
iOpts="$iOpts $1"
Quiet=$1
;;
# doio Options to pass thru ... options with an argument
-D[rmMVUC] )
o=${1#-D}
dOpts="$dOpts -$o $2"
shift
;;
# doio options to pass thru ... just the options
-D[aekv] )
o=${1#-D}
dOpts="$dOpts -$o"
;;
# doio options to look at
-n | -Dn )
dOpts="$dOpts $1 $2"
# force file locking with > 1 process
if [[ $2 > 1 ]]
then
dOpts="$dOpts -k"
fi
opt_n="-n"
shift
;;
\? | -*)
echo "$Prog: Illegal option $1" >&2
exit 1
;;
*)
break
;;
esac
shift
done
if [[ $TOUTPUT = "NOPASS" ]]; then
iOpts="$iOpts -q"
Quiet="-q"
fi
#
# Hard-Coded Scenario Specifications
#
# FSA RAW I/O via FSA
# MPPnnn Run as a <nnn> sized MPP application
# userstripe create files using user striping
#
if [[ -n "$opt_S" ]]
then
case $Scenario in
FSA )
# I/O via FSA
Flags="parallel"
Nprocs=1
LockRegion=""
;;
MPP* )
# use mpprun... to cooperate with a batch system, this
# requires scanning mppview, etc.
NPE=${Scenario#MPP}
MPPrun=" mpprun -n $NPE "
;;
userstripe)
#create files using user striping
Oflags=O_PLACE,0xffffffffffffffff,1000
;;
places*)
FSIZE=${Scenario#places-}
oi="$IFS"
IFS=":"
set -- $PLACES
if [ $# -eq 0 ]
then
# "this isn't supposed to happen"
Files="25%:rwtest.$$"
else
IFS="$oi"
PL=${*}
for p in $PL
do
f="$f "${FSIZE}":"${p}"/rwtest$$"
done
set -- $f
fi
;;
esac
fi
#
# If no files are specified ...
# check if PLACES is set; if so, put one file in each place
# otherwise generate one filename in the current directory.
#
if [ $# -eq 0 ]
then
# put one file in each of $PLACES
Files="25%:rwtest.file"
else
Files=$*
fi
#
# use 'df -PB' to see how many blocks are available, apply a hard limit of
# 1,000,000 blocks if no limit is specified
#
case $(uname -s) in
IRIX | IRIX64 ) dfOpts="-Pb" ;;
Linux) dfOpts="-P" ;;
*) dfOpts="-PB" ;;
esac
for f in $Files
do
file=${f##*:}
if [ ! -f "$file" ]
then
Files_To_Remove="$Files_To_Remove $file"
fi
dir=$(dirname $file)
size=${f%%:*}
if [[ $size = *%* ]]
then
typeset -i n=0
while (( n < ${#szcache[*]} ))
do
if [[ szcache[$n] = $dir ]]; then
break;
fi
n=n+1
done
if (( n < ${#szcache[*]} ))
then
blks=${szblks[$n]}
else
blks=$(df $dfOpts $dir |
(while read fs blks used avail cap mountpoint
do
#echo $fs $blks $used $avail >&2
b=$avail
done
echo $b) )
case $(uname) in
Linux) blks=$( expr $blks / 2 ) ;;
esac
szcache[${#szcache[*]}+1]=$dir
szblks[${#szblks[*]}+1]=$blks
fi
max=${size##*\%}
if [[ "$max" = "" ]]
then
max=1000000
fi
size=${size%%\%*}
sz=$(expr \( $blks '*' $size \) / 100)
if [[ $sz -gt $max ]]
then
sz=$max
fi
f=$sz"b:"$file
fi
F[${#F[*]}+1]=$f
done
Files=${F[*]}
if [[ -z ${dOpts} ]]; then
dOpts=-av
fi
if [[ -n "$opt_F" ]]; then
echo $Files
else
[[ -n "$here" ]] || here=`pwd`
if [[ -x ${LTPROOT}/testcases/bin/iogen ]]; then
IOgen=${LTPROOT}/testcases/bin/iogen
elif [[ -x ${here}/ltp/iogen ]]; then
IOgen=$here/ltp/iogen
elif [[ -x ./iogen ]]; then
IOgen=./iogen
else
echo Cannot find iogen command
exit 1
fi
if [[ -x ${LTPROOT}/testcases/bin/doio ]]; then
doIO=${LTPROOT}/testcases/bin/doio
elif [[ -x ${here}/ltp/doio ]]; then
doIO=$here/ltp/doio
elif [[ -x ./doio ]]; then
doIO=./doio
else
echo Cannot find doio command
exit 1
fi
cmd="$IOgen ${iOpts} ${Files} | $MPPrun $doIO ${dOpts}"
if [[ -z "$Quiet" ]]; then
echo $cmd
fi
trap "killkids" INT
trap "cleanup_and_exit 2" HUP
( $IOgen ${iOpts} ${Files}
r=$?
if [ $r -ne 0 ]
then
echo "$Prog$Name : iogen reported errors (r=$r)" >&2
kill -HUP $$
fi
) | $MPPrun $doIO ${dOpts}
r=$?
if [ $r -ne 0 ]
then
echo "$Prog$Name : doio reported errors (r=$r)" >&2
fi
cleanup_and_exit $r
fi