mirror of
https://github.com/Motorhead1991/qemu.git
synced 2025-07-31 06:13:53 -06:00
c49dda7254
Fiona reported that ZFS makes sparse file testing awkward, since: - it has asynchronous allocation (not even 'fsync $file' makes du see the desired size; it takes the slower 'fsync -f $file' which is not appropriate for the tests) - for tests of fully allocated files, ZFS with compression enabled still reports smaller disk usage Add a new _require_disk_usage that quickly probes whether an attempt to create a sparse 5M file shows as less than 1M usage, while the same file with -o preallocation=full shows as more than 4M usage without sync, which should filter out ZFS behavior. Then use it in various affected tests. This does not add the new filter on all tests that Fiona is seeing ZFS failures on, but only those where I could quickly spot that there is at least one place where the test depends on the output of 'du -b' or 'stat -c %b'. Reported-by: Fiona Ebner <f.ebner@proxmox.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-ID: <20250523163041.2548675-8-eblake@redhat.com> Reviewed-by: Fiona Ebner <f.ebner@proxmox.com> Tested-by: Fiona Ebner <f.ebner@proxmox.com>
128 lines
4.1 KiB
Bash
Executable file
128 lines
4.1 KiB
Bash
Executable file
#!/usr/bin/env bash
|
|
# group: rw auto quick
|
|
#
|
|
# Test blockdev-mirror with raw sparse destination
|
|
#
|
|
# Copyright (C) 2025 Red Hat, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
seq="$(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
|