lustre/tests/racer/file_create.sh

   1 #!/bin/bash
   2
   3 DIR=$1
   4 MAX=$2
   5 MAX_MB=${RACER_MAX_MB:-8}
   6
   7 OSTCOUNT=${OSTCOUNT:-$($LFS df $DIR 2> /dev/null | grep -c OST)}
   8
   9 while /bin/true; do
  10         file=$((RANDOM % MAX))
  11         # $RANDOM is between 0 and 32767, and we want $blockcount in 64kB units
  12         blockcount=$((RANDOM * MAX_MB / 32 / 64))
  13         stripecount=$((RANDOM % (OSTCOUNT + 1)))
  14         [ $OSTCOUNT -gt 0 ] &&
  15                 $LFS setstripe -c $stripecount $DIR/$file 2> /dev/null
  16         dd if=/dev/zero of=$DIR/$file bs=64k count=$blockcount 2> /dev/null
  17 done
  18