diff options
Diffstat (limited to 'tests/qemu-iotests/tests/mirror-sparse')
| -rwxr-xr-x | tests/qemu-iotests/tests/mirror-sparse | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/tests/qemu-iotests/tests/mirror-sparse b/tests/qemu-iotests/tests/mirror-sparse new file mode 100755 index 0000000..cfcaa60 --- /dev/null +++ b/tests/qemu-iotests/tests/mirror-sparse @@ -0,0 +1,128 @@ +#!/usr/bin/env bash +# group: rw auto quick +# +# Test blockdev-mirror with raw sparse destination +# +# Copyright (C) 2025 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/>. +# + +seq="$(basename $0)" +echo "QA output created by $seq" + +status=1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img + _cleanup_qemu +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +cd .. +. ./common.rc +. ./common.filter +. ./common.qemu + +_supported_fmt qcow2 raw # Format of the source. dst is always raw file +_supported_proto file +_supported_os Linux +_require_disk_usage + +echo +echo "=== Initial image setup ===" +echo + +TEST_IMG="$TEST_IMG.base" _make_test_img 20M +$QEMU_IO -c 'w 8M 2M' -f $IMGFMT "$TEST_IMG.base" | _filter_qemu_io + +_launch_qemu \ + -blockdev '{"driver":"file", "cache":{"direct":true, "no-flush":false}, + "filename":"'"$TEST_IMG.base"'", "node-name":"src-file"}' \ + -blockdev '{"driver":"'$IMGFMT'", "node-name":"src", "file":"src-file"}' +h1=$QEMU_HANDLE +_send_qemu_cmd $h1 '{"execute": "qmp_capabilities"}' 'return' + +# Check several combinations; most should result in a sparse destination; +# the destination should only be fully allocated if pre-allocated +# and not punching holes due to detect-zeroes +# do_test creation discard zeroes result +do_test() { + creation=$1 + discard=$2 + zeroes=$3 + expected=$4 + +echo +echo "=== Testing creation=$creation discard=$discard zeroes=$zeroes ===" +echo + +rm -f $TEST_IMG +if test $creation = external; then + truncate --size=20M $TEST_IMG +else + _send_qemu_cmd $h1 '{"execute": "blockdev-create", "arguments": + {"options": {"driver":"file", "filename":"'$TEST_IMG'", + "size":'$((20*1024*1024))', "preallocation":"'$creation'"}, + "job-id":"job1"}}' 'concluded' + _send_qemu_cmd $h1 '{"execute": "job-dismiss", "arguments": + {"id": "job1"}}' 'return' +fi +_send_qemu_cmd $h1 '{"execute": "blockdev-add", "arguments": + {"node-name": "dst", "driver":"file", + "filename":"'$TEST_IMG'", "aio":"threads", + "auto-read-only":true, "discard":"'$discard'", + "detect-zeroes":"'$zeroes'"}}' 'return' +_send_qemu_cmd $h1 '{"execute":"blockdev-mirror", "arguments": + {"sync":"full", "device":"src", "target":"dst", + "job-id":"job2"}}' 'return' +_timed_wait_for $h1 '"ready"' +_send_qemu_cmd $h1 '{"execute": "job-complete", "arguments": + {"id":"job2"}}' 'return' \ + | _filter_block_job_offset | _filter_block_job_len +_send_qemu_cmd $h1 '{"execute": "blockdev-del", "arguments": + {"node-name": "dst"}}' 'return' \ + | _filter_block_job_offset | _filter_block_job_len +$QEMU_IMG compare -U -f $IMGFMT -F raw $TEST_IMG.base $TEST_IMG +# Some filesystems can fudge allocations for various reasons; rather +# than expecting precise 2M and 20M images, it is better to allow for slop. +result=$(disk_usage $TEST_IMG) +if test $result -lt $((4*1024*1024)); then + actual=sparse +elif test $result -gt $((19*1024*1024)); then + actual=full +else + actual="unexpected size ($result)" +fi +echo "Destination is $actual; expected $expected" +} + +do_test external ignore off sparse +do_test external unmap off sparse +do_test external unmap unmap sparse +do_test off ignore off sparse +do_test off unmap off sparse +do_test off unmap unmap sparse +do_test full ignore off full +do_test full unmap off sparse +do_test full unmap unmap sparse + +_send_qemu_cmd $h1 '{"execute":"quit"}' '' + +# success, all done +echo '*** done' +rm -f $seq.full +status=0 |