mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-30 15:00:34 +00:00
6c3e110642
Add a test for committing an overlay in a sub directory to one of the images in its backing chain, using both relative and absolute filenames. Signed-off-by: Max Reitz <mreitz@redhat.com>
190 lines
5.2 KiB
Bash
Executable File
190 lines
5.2 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
#
|
|
# Commit changes to backing file
|
|
#
|
|
# Copyright (C) 2009 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=kwolf@redhat.com
|
|
|
|
seq=`basename $0`
|
|
echo "QA output created by $seq"
|
|
|
|
status=1 # failure is the default!
|
|
|
|
_cleanup()
|
|
{
|
|
_cleanup_test_img
|
|
_rm_test_img "$TEST_IMG.base"
|
|
_rm_test_img "$TEST_IMG.orig"
|
|
|
|
_rm_test_img "$TEST_DIR/subdir/t.$IMGFMT.base"
|
|
_rm_test_img "$TEST_DIR/subdir/t.$IMGFMT.mid"
|
|
_rm_test_img "$TEST_DIR/subdir/t.$IMGFMT"
|
|
rmdir "$TEST_DIR/subdir" &> /dev/null
|
|
}
|
|
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
|
|
_supported_fmt qcow qcow2 vmdk qed
|
|
_supported_proto file
|
|
_unsupported_imgopts "subformat=monolithicFlat" \
|
|
"subformat=twoGbMaxExtentFlat" \
|
|
"subformat=twoGbMaxExtentSparse" \
|
|
"subformat=streamOptimized"
|
|
|
|
TEST_OFFSETS="0 4294967296"
|
|
|
|
TEST_IMG_SAVE="$TEST_IMG"
|
|
TEST_IMG="$TEST_IMG.base"
|
|
|
|
_make_test_img 6G
|
|
|
|
echo "Filling base image"
|
|
echo
|
|
|
|
for offset in $TEST_OFFSETS; do
|
|
# Some clusters with alternating backing file/image file reads
|
|
io writev $(( offset )) 512 1024 64
|
|
|
|
# Complete backing clusters
|
|
io writev $(( offset + 64 * 1024)) 65536 65536 1
|
|
done
|
|
_check_test_img
|
|
|
|
echo "Creating test image with backing file"
|
|
echo
|
|
|
|
TEST_IMG="$TEST_IMG_SAVE"
|
|
_make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G
|
|
|
|
echo "Filling test image"
|
|
echo
|
|
|
|
for offset in $TEST_OFFSETS; do
|
|
# Some clusters with alternating backing file/image file reads
|
|
io writev $(( offset + 512 )) 512 1024 64
|
|
|
|
# Complete test image clusters
|
|
io writev $(( offset + 64 * 1024 + 65536)) 65536 65536 1
|
|
done
|
|
_check_test_img
|
|
|
|
$QEMU_IMG commit "$TEST_IMG"
|
|
TEST_IMG="$TEST_IMG.base"
|
|
|
|
echo "Reading from the backing file"
|
|
echo
|
|
|
|
for offset in $TEST_OFFSETS; do
|
|
# Some clusters with alternating backing file/image file reads
|
|
io readv $(( offset )) 512 1024 64
|
|
io readv $(( offset + 512 )) 512 1024 64
|
|
|
|
# Complete test image clusters
|
|
io readv $(( offset + 64 * 1024)) 65536 65536 1
|
|
io readv $(( offset + 64 * 1024 + 65536)) 65536 65536 1
|
|
|
|
# Empty sectors
|
|
io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1
|
|
done
|
|
_check_test_img
|
|
_cleanup
|
|
TEST_IMG=$TEST_IMG_SAVE
|
|
|
|
echo
|
|
echo 'Testing failing commit'
|
|
echo
|
|
|
|
TEST_IMG="$TEST_IMG.base" _make_test_img 1M
|
|
|
|
# Create an image with a null backing file to which committing will fail (with
|
|
# ENOSPC so we can distinguish the result from some generic EIO which may be
|
|
# generated anywhere in the block layer)
|
|
backing="json:{'driver': '$IMGFMT',
|
|
'file': {
|
|
'driver': 'blkdebug',
|
|
'inject-error': [{
|
|
'event': 'write_aio',
|
|
'errno': 28,
|
|
'once': true
|
|
}],
|
|
'image': {
|
|
'driver': 'file',
|
|
'filename': '$TEST_IMG.base'
|
|
}}}"
|
|
|
|
# Filter out newlines and collapse spaces
|
|
backing=$(echo "$backing" | tr -d '\n' | tr -s ' ')
|
|
|
|
_make_test_img -b "$backing" -F $IMGFMT
|
|
|
|
# Just write anything so committing will not be a no-op
|
|
$QEMU_IO -c 'writev 0 64k' "$TEST_IMG" | _filter_qemu_io
|
|
|
|
$QEMU_IMG commit "$TEST_IMG"
|
|
_cleanup
|
|
|
|
|
|
echo
|
|
echo 'Testing commit in sub-directory with relative filenames'
|
|
echo
|
|
|
|
pushd "$TEST_DIR" > /dev/null
|
|
|
|
mkdir subdir
|
|
|
|
TEST_IMG="subdir/t.$IMGFMT.base" _make_test_img 1M
|
|
TEST_IMG="subdir/t.$IMGFMT.mid" _make_test_img -b "t.$IMGFMT.base" -F $IMGFMT
|
|
TEST_IMG="subdir/t.$IMGFMT" _make_test_img -b "t.$IMGFMT.mid" -F $IMGFMT
|
|
|
|
# Should work
|
|
$QEMU_IMG commit -b "t.$IMGFMT.mid" "subdir/t.$IMGFMT"
|
|
|
|
# Might theoretically work, but does not in practice (we have to
|
|
# decide between this and the above; and since we always represent
|
|
# backing file names as relative to the overlay, we go for the above)
|
|
$QEMU_IMG commit -b "subdir/t.$IMGFMT.mid" "subdir/t.$IMGFMT" 2>&1 | \
|
|
_filter_imgfmt
|
|
|
|
# This should work as well
|
|
$QEMU_IMG commit -b "$TEST_DIR/subdir/t.$IMGFMT.mid" "subdir/t.$IMGFMT"
|
|
|
|
popd > /dev/null
|
|
|
|
# Now let's try with just absolute filenames
|
|
# (This will not work with external data files, though, because when
|
|
# using relative paths for those, qemu will always resolve them
|
|
# relative to its CWD. Therefore, it cannot find those data files now
|
|
# that we left $TEST_DIR.)
|
|
if _get_data_file '' > /dev/null; then
|
|
echo 'Image committed.' # Skip test
|
|
else
|
|
$QEMU_IMG commit -b "$TEST_DIR/subdir/t.$IMGFMT.mid" \
|
|
"$TEST_DIR/subdir/t.$IMGFMT"
|
|
fi
|
|
|
|
# success, all done
|
|
echo "*** done"
|
|
rm -f $seq.full
|
|
status=0
|