copy/copy-file-to-qcow2.sh

   1 #!/usr/bin/env bash
   2 # nbd client library in userspace
   3 # Copyright Red Hat
   4 #
   5 # This library is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU Lesser General Public
   7 # License as published by the Free Software Foundation; either
   8 # version 2 of the License, or (at your option) any later version.
   9 #
  10 # This library is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # Lesser General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU Lesser General Public
  16 # License along with this library; if not, write to the Free Software
  17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18
  19 . ../tests/functions.sh
  20
  21 set -e
  22 set -x
  23
  24 requires $QEMU_NBD --pid-file=test.pid --version
  25 requires qemu-img --version
  26 requires cmp --version
  27 requires dd --version
  28 requires dd oflag=seek_bytes </dev/null
  29 requires stat --version
  30 requires test -r /dev/urandom
  31 requires test -r /dev/zero
  32 requires truncate --version
  33
  34 file=copy-file-to-qcow2.file
  35 file2=copy-file-to-qcow2.file2
  36 qcow2=copy-file-to-qcow2.qcow2
  37 pid=copy-file-to-qcow2.pid
  38 sock=$(mktemp -u /tmp/libnbd-test-copy.XXXXXX)
  39 rm -f $file $file2 $qcow2 $pid $sock
  40 cleanup_fn rm -f $file $file2 $qcow2 $pid $sock
  41
  42 # Create a random partially sparse file.
  43 touch $file
  44 for i in `seq 1 100`; do
  45     dd if=/dev/urandom of=$file ibs=512 count=1 \
  46        oflag=seek_bytes seek=$((RANDOM * 9973)) conv=notrunc
  47     dd if=/dev/zero of=$file ibs=512 count=1 \
  48        oflag=seek_bytes seek=$((RANDOM * 9973)) conv=notrunc
  49 done
  50 size="$( stat -c %s $file )"
  51
  52 # Create the empty target qcow2 file.
  53 qemu-img create -f qcow2 $qcow2 $size
  54
  55 # Run qemu-nbd as a separate process so that we can copy to and from
  56 # the single process in two separate operations.
  57 $QEMU_NBD -f qcow2 --cache=writeback -t --socket=$sock --pid-file=$pid $qcow2 &
  58 cleanup_fn kill $!
  59
  60 wait_for_pidfile qemu-nbd $pid
  61
  62 $VG nbdcopy $file "nbd+unix:///?socket=$sock"
  63 $VG nbdcopy "nbd+unix:///?socket=$sock" $file2
  64
  65 ls -l $file $file2
  66
  67 # Because qemu/qcow2 only supports whole sectors, we have to truncate
  68 # the copied out file to the expected size before comparing.
  69 truncate -s $size $file2
  70
  71 cmp $file $file2