qemu-patch-raspberry4/tests/qemu-iotests/198
Daniel P. Berrange f06033295b qcow2: fix image corruption after committing qcow2 image into base
After committing the qcow2 image contents into the base image, qemu-img
will call bdrv_make_empty to drop the payload in the layered image.

When this is done for qcow2 images, it blows away the LUKS encryption
header, making the resulting image unusable. There are two codepaths
for emptying a qcow2 image, and the second (slower) codepath leaves
the LUKS header intact, so force use of that codepath.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-11-17 13:36:03 +01:00

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#!/bin/bash
#
# Test commit of encrypted qcow2 files
#
# Copyright (C) 2017 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# creator
owner=berrange@redhat.com
seq=`basename $0`
echo "QA output created by $seq"
here=`pwd`
status=1 # failure is the default!
_cleanup()
{
_cleanup_test_img
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
_supported_fmt qcow2
_supported_proto generic
_supported_os Linux
size=16M
TEST_IMG_BASE=$TEST_IMG.base
SECRET0="secret,id=sec0,data=astrochicken"
SECRET1="secret,id=sec1,data=furby"
TEST_IMG_SAVE=$TEST_IMG
TEST_IMG=$TEST_IMG_BASE
echo "== create base =="
_make_test_img --object $SECRET0 -o "encrypt.format=luks,encrypt.key-secret=sec0,encrypt.iter-time=10" $size
TEST_IMG=$TEST_IMG_SAVE
IMGSPECBASE="driver=$IMGFMT,file.filename=$TEST_IMG_BASE,encrypt.key-secret=sec0"
IMGSPECLAYER="driver=$IMGFMT,file.filename=$TEST_IMG,encrypt.key-secret=sec1"
IMGSPEC="$IMGSPECLAYER,backing.driver=$IMGFMT,backing.file.filename=$TEST_IMG_BASE,backing.encrypt.key-secret=sec0"
QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
echo
echo "== writing whole image base =="
$QEMU_IO --object $SECRET0 -c "write -P 0xa 0 $size" --image-opts $IMGSPECBASE | _filter_qemu_io | _filter_testdir
echo "== create overlay =="
_make_test_img --object $SECRET1 -o "encrypt.format=luks,encrypt.key-secret=sec1,encrypt.iter-time=10" -u -b "$TEST_IMG_BASE" $size
echo
echo "== writing whole image layer =="
$QEMU_IO --object $SECRET0 --object $SECRET1 -c "write -P 0x9 0 $size" --image-opts $IMGSPEC | _filter_qemu_io | _filter_testdir
echo
echo "== verify pattern base =="
$QEMU_IO --object $SECRET0 -c "read -P 0xa 0 $size" --image-opts $IMGSPECBASE | _filter_qemu_io | _filter_testdir
echo
echo "== verify pattern layer =="
$QEMU_IO --object $SECRET0 --object $SECRET1 -c "read -P 0x9 0 $size" --image-opts $IMGSPEC | _filter_qemu_io | _filter_testdir
echo
echo "== committing layer into base =="
$QEMU_IMG commit --object $SECRET0 --object $SECRET1 --image-opts $IMGSPEC | _filter_testdir
echo
echo "== verify pattern base =="
$QEMU_IO --object $SECRET0 -c "read -P 0x9 0 $size" --image-opts $IMGSPECBASE | _filter_qemu_io | _filter_testdir
echo
echo "== verify pattern layer =="
$QEMU_IO --object $SECRET0 --object $SECRET1 -c "read -P 0x9 0 $size" --image-opts $IMGSPEC | _filter_qemu_io | _filter_testdir
echo
echo "== checking image base =="
$QEMU_IMG info --image-opts $IMGSPECBASE | _filter_img_info | _filter_testdir | sed -e "/^disk size:/ D"
echo
echo "== checking image layer =="
$QEMU_IMG info --image-opts $IMGSPECLAYER | _filter_img_info | _filter_testdir | sed -e "/^disk size:/ D"
# success, all done
echo "*** done"
rm -f $seq.full
status=0