lustre/tests/racer/file_create.sh

   1 #!/bin/bash
   2 trap 'kill $(jobs -p)' EXIT
   3 RACER_ENABLE_PFL=${RACER_ENABLE_PFL:-true}
   4 RACER_ENABLE_DOM=${RACER_ENABLE_DOM:-true}
   5 RACER_ENABLE_FLR=${RACER_ENABLE_FLR:-true}
   6 RACER_ENABLE_SEL=${RACER_ENABLE_SEL:-true}
   7 RACER_ENABLE_OVERSTRIPE=${RACER_ENABLE_OVERSTRIPE:-true}
   8 RACER_LOV_MAX_STRIPECOUNT=${RACER_LOV_MAX_STRIPECOUNT:-$LOV_MAX_STRIPE_COUNT}
   9 RACER_EXTRA_LAYOUT=${RACER_EXTRA_LAYOUT:-""}
  10 DIR=$1
  11 MAX=$2
  12 MAX_MB=${RACER_MAX_MB:-8}
  13
  14 layout=(raid0 raid0)
  15
  16 # check if it supports PFL layout
  17 $RACER_ENABLE_PFL && layout+=(pfl pfl pfl)
  18
  19 # check if it supports DoM
  20 $RACER_ENABLE_DOM && layout+=(dom dom dom)
  21
  22 # check if it supports FLR
  23 $RACER_ENABLE_FLR && layout+=(flr flr flr)
  24
  25 # check if it supports PFL layout
  26 $RACER_ENABLE_SEL && layout+=(sel sel sel)
  27 [[ -n "$RACER_EXTRA_LAYOUT" ]] && layout+=(extra extra extra)
  28
  29 echo "layout: ${layout[*]}"
  30
  31 while /bin/true; do
  32         file=$((RANDOM % MAX))
  33         (( RANDOM % 100 < 25 )) && file+="/$((RANDOM % MAX))"
  34         # $RANDOM is between 0 and 32767, and we want $blockcount in 64kB units
  35         blockcount=$((RANDOM * MAX_MB / 32 / 64))
  36         $RACER_ENABLE_OVERSTRIPE &&
  37                 stripecount="-C $((RANDOM %
  38                         (RACER_LOV_MAX_STRIPECOUNT +  1)))" ||
  39                 stripecount="-c $((RANDOM % (OSTCOUNT + 1)))"
  40
  41         [ ${stripecount:2} -gt 0 ] && {
  42                 stripesize=$(((1 << (RANDOM % 5)) * 64))K
  43                 comp_end=$((${stripesize%K} * (RANDOM % 8 + 1)))K
  44                 pattern=${layout[$RANDOM % ${#layout[*]}]}
  45
  46                 case $pattern in
  47                 dom) opt="setstripe -E $stripesize -L mdt -E eof $stripecount -S 1M" ;;
  48                 pfl) opt="setstripe -E $comp_end -S $stripesize -E eof $stripecount -S 2M" ;;
  49                 flr) opt="mirror create -N2 -E $comp_end -S $stripesize -E eof $stripecount -S 2M" ;;
  50                 sel) opt="setstripe -E 128M -S $stripesize -z 64M -E eof $stripecount -S 2M -z 128M" ;;
  51                 raid0) opt="setstripe -S $stripesize $stripecount" ;;
  52                 extra) opt="setstripe $RACER_EXTRA_LAYOUT" ;;
  53                 esac
  54
  55                 if $RACER_ENABLE_FILE_MIGRATE && (( RANDOM % 20 == 0 )); then
  56                         if [ "$pattern" = "flr" ]; then
  57                                 opt=${opt/create/extend}
  58                         else
  59                                 opt=${opt/setstripe/migrate}
  60                                 (( file % 8 == 0 )) && opt+=" --block"
  61                         fi
  62                 fi
  63                 $LFS $opt $DIR/$file 2> /dev/null || true
  64         }
  65
  66         # offset between 0 and 16MB (256 64k chunks), with 1/2 at offset 0
  67         seek=$((RANDOM / 64)); [ $seek -gt 256 ] && seek=0
  68         dd if=/dev/zero of=$DIR/$file bs=64k count=$blockcount \
  69                 seek=$seek 2> /dev/null || true
  70 done
  71