lustre/tests/lockorder.sh

   1 #!/bin/sh
   2 set -e
   3
   4 export PATH=`dirname $0`:`dirname $0`/../utils:$PATH
   5 CREATEMANY=${CREATEMANY:-createmany}
   6 STATMANY=${STATMANY:-statmany}
   7 UNLINKMANY=${UNLINKMANY:-unlinkmany}
   8 LCTL=${LCTL:-lctl}
   9
  10 MOUNT1=${MOUNT1:-/mnt/lustre1}
  11 MOUNT2=${MOUNT2:-/mnt/lustre2}
  12 DIR=${DIR:-$MOUNT1}
  13 DIR2=${DIR2:-$MOUNT2}
  14 COUNT=${COUNT:-100}
  15
  16 cleanup() {
  17         [ $CR_PID ] && kill -9 $CR_PID
  18 }
  19
  20 trap cleanup 0
  21
  22 LOCKDIR=$DIR/lockdir
  23 LOCKFILE=$LOCKDIR/lockfile
  24 rm -rf $LOCKDIR
  25
  26 NUM=0
  27
  28 MINDIR=$DIR
  29 MAXDIR=$DIR
  30 MINRES=2000000000
  31 MAXRES=0
  32 mkdir -p $MINDIR
  33 while [ $MINRES -gt $MAXRES ]; do
  34         FILETMP=$MINDIR/f$$${NUM}
  35         DIRTMP=$MAXDIR/d$$${NUM}
  36         touch $FILETMP
  37         mkdir -p $DIRTMP
  38         FILERES=`ls -id $FILETMP | awk '{ print $1 }'`
  39         DIRRES=`ls -id $DIRTMP | awk '{ print $1 }'`
  40         if [ $DIRRES -gt $MAXRES ]; then
  41                 MAXDIR=$DIRTMP
  42                 MAXRES=$DIRRES
  43         fi
  44         if [ $FILERES -lt $MINRES ]; then
  45                 [ -f "$MINFILE" ] && rm $MINFILE
  46                 MINFILE=$FILETMP
  47                 MINRES=$FILERES
  48         else
  49                 rm $TMPFILE
  50         fi
  51         NUM=$(($NUM + 1))
  52 done
  53
  54 mv $MAXDIR $LOCKDIR
  55 mv $MINFILE $LOCKFILE
  56 rm -rf $DIR/d$$*
  57
  58 $LCTL mark "start dir: $LOCKDIR=$MAXRES file: $LOCKFILE=$MINRES"
  59 # link will lock $LOCKFILE and $DIR as it creates ${LOCKFILE}{0,1,...}
  60 $CREATEMANY -l$LOCKFILE $LOCKFILE -$COUNT &
  61 CR_PID=$!
  62
  63 sleep 1
  64
  65 # this will lock $DIR and ${LOCKFILE}0
  66 $STATMANY -s $DIR2/lockdir/lockfile 1 -$COUNT &
  67 ST_PID=$!
  68
  69 sleep $(($COUNT / 2))
  70
  71 $UNLINKMANY $DIR2/lockdir/lockfile 1 $(($COUNT * 1000)) || true
  72
  73 trap 0
  74 kill $CR_PID || true
  75 kill $ST_PID || true
  76
  77 rm -rf $LOCKDIR