| #!/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 |