mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-22 03:50:11 +00:00
e6ea23126c
Add a test for qemu-img commit on backing chains with more than two images. This test also checks whether the top image is emptied (unless this is prevented by specifying either -d or -b) and does therefore not work for qed and vmdk which requires it to be separate from 020. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1414159063-25977-14-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
123 lines
4.0 KiB
Bash
Executable File
123 lines
4.0 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# Commit changes into backing chains and empty the top image if the
|
|
# backing image is not explicitly specified
|
|
#
|
|
# Copyright (C) 2014 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=mreitz@redhat.com
|
|
|
|
seq="$(basename $0)"
|
|
echo "QA output created by $seq"
|
|
|
|
here="$PWD"
|
|
tmp=/tmp/$$
|
|
status=1 # failure is the default!
|
|
|
|
_cleanup()
|
|
{
|
|
_cleanup_test_img
|
|
_rm_test_img "$TEST_IMG.itmd"
|
|
}
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common.rc
|
|
. ./common.filter
|
|
. ./common.pattern
|
|
|
|
# Any format supporting backing files and bdrv_make_empty
|
|
_supported_fmt qcow qcow2
|
|
_supported_proto file
|
|
_supported_os Linux
|
|
|
|
|
|
# Four passes:
|
|
# 0: Two-layer backing chain, commit to upper backing file (implicitly)
|
|
# (in this case, the top image will be emptied)
|
|
# 1: Two-layer backing chain, commit to upper backing file (explicitly)
|
|
# (in this case, the top image will implicitly stay unchanged)
|
|
# 2: Two-layer backing chain, commit to upper backing file (implicitly with -d)
|
|
# (in this case, the top image will explicitly stay unchanged)
|
|
# 3: Two-layer backing chain, commit to lower backing file
|
|
# (in this case, the top image will implicitly stay unchanged)
|
|
#
|
|
# 020 already tests committing, so this only tests whether image chains are
|
|
# working properly and that all images above the base are emptied; therefore,
|
|
# no complicated patterns are necessary
|
|
for i in 0 1 2 3; do
|
|
|
|
echo
|
|
echo "=== Test pass $i ==="
|
|
echo
|
|
|
|
TEST_IMG="$TEST_IMG.base" _make_test_img 64M
|
|
TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" 64M
|
|
_make_test_img -b "$TEST_IMG.itmd" 64M
|
|
|
|
$QEMU_IO -c 'write -P 1 0 192k' "$TEST_IMG.base" | _filter_qemu_io
|
|
$QEMU_IO -c 'write -P 2 64k 128k' "$TEST_IMG.itmd" | _filter_qemu_io
|
|
$QEMU_IO -c 'write -P 3 128k 64k' "$TEST_IMG" | _filter_qemu_io
|
|
|
|
if [ $i -lt 3 ]; then
|
|
if [ $i == 0 ]; then
|
|
# -b "$TEST_IMG.itmd" should be the default (that is, committing to the
|
|
# first backing file in the chain)
|
|
$QEMU_IMG commit "$TEST_IMG"
|
|
elif [ $i == 1 ]; then
|
|
# explicitly specify the commit target (this should imply -d)
|
|
$QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG"
|
|
else
|
|
# do not explicitly specify the commit target, but use -d to leave the
|
|
# top image unchanged
|
|
$QEMU_IMG commit -d "$TEST_IMG"
|
|
fi
|
|
|
|
# Bottom should be unchanged
|
|
$QEMU_IO -c 'read -P 1 0 192k' "$TEST_IMG.base" | _filter_qemu_io
|
|
|
|
# Intermediate should contain changes from top
|
|
$QEMU_IO -c 'read -P 1 0 64k' "$TEST_IMG.itmd" | _filter_qemu_io
|
|
$QEMU_IO -c 'read -P 2 64k 64k' "$TEST_IMG.itmd" | _filter_qemu_io
|
|
$QEMU_IO -c 'read -P 3 128k 64k' "$TEST_IMG.itmd" | _filter_qemu_io
|
|
|
|
# And in pass 0, the top image should be empty, whereas in both other passes
|
|
# it should be unchanged (which is both checked by qemu-img map)
|
|
else
|
|
$QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG"
|
|
|
|
# Bottom should contain all changes
|
|
$QEMU_IO -c 'read -P 1 0 64k' "$TEST_IMG.base" | _filter_qemu_io
|
|
$QEMU_IO -c 'read -P 2 64k 64k' "$TEST_IMG.base" | _filter_qemu_io
|
|
$QEMU_IO -c 'read -P 3 128k 64k' "$TEST_IMG.base" | _filter_qemu_io
|
|
|
|
# Both top and intermediate should be unchanged
|
|
fi
|
|
|
|
$QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map
|
|
$QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map
|
|
$QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map
|
|
|
|
done
|
|
|
|
|
|
# success, all done
|
|
echo "*** done"
|
|
rm -f $seq.full
|
|
status=0
|