Commit b9c2e1cb authored by Kroese's avatar Kroese Committed by GitHub
Browse files

Write random data instead of zeroes 

When writing zeroes the underlying virtio driver detects and skips them, so fill the file with random data instead.
parents e42fe25d 29720e8e

run/disk.sh

+4 −4
Original line number Diff line number Diff line
@@ -48,9 +48,9 @@ if [ -f "${DATA}" ]; then 
      if [ "$ALLOCATE" = "Z" ]; then



        GB=$(( (REQ + 1073741823)/1073741824 ))

        echo "INFO: Writing ${GB} GB of zeroes, please wait.."

        echo "INFO: Writing ${GB} GB of random data, please wait.."



        dd if=/dev/zero of="${DATA}" seek="${OLD_SIZE}" count="${REQ}" bs=1M iflag=count_bytes oflag=seek_bytes

        dd if=/dev/urandom of="${DATA}" seek="${OLD_SIZE}" count="${REQ}" bs=1M iflag=count_bytes oflag=seek_bytes status=none



      else
@@ -92,9 +92,9 @@ if [ ! -f "${DATA}" ]; then 


    if [ "$ALLOCATE" = "Z" ]; then



      echo "INFO: Writing ${DISK_SIZE} of zeroes, please wait.."

      echo "INFO: Writing ${DISK_SIZE} of random data, please wait.."



      dd if=/dev/zero of="${DATA}" count="${DATA_SIZE}" bs=1M iflag=count_bytes

      dd if=/dev/urandom of="${DATA}" count="${DATA_SIZE}" bs=1M iflag=count_bytes status=none



    else

run/install.sh

+2 −2
Original line number Diff line number Diff line
@@ -127,9 +127,9 @@ if [ "$ALLOCATE" != "Z" ]; then 
else



  GB=$(( (SYSTEM_SIZE + 1073741823)/1073741824 ))

  echo "Install: Writing ${GB} GB of zeroes, please wait.."

  echo "Install: Writing ${GB} GB of random data, please wait.."



  dd if=/dev/zero of="${SYSTEM}" count="${SYSTEM_SIZE}" bs=1M iflag=count_bytes

  dd if=/dev/urandom of="${SYSTEM}" count="${SYSTEM_SIZE}" bs=1M iflag=count_bytes status=none



fi