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qemu-iotests: Test change-backing-file command
This involves a temporary read-write reopen if the backing file link in the middle of a backing file chain should be changed and is therefore a good test for the latest bdrv_reopen() vs. op blockers fixes. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf
parent
3045025991
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3fb23e0751
92
tests/qemu-iotests/195
Executable file
92
tests/qemu-iotests/195
Executable file
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#!/bin/bash
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#
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# Test change-backing-file command
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#
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# Copyright (C) 2017 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=kwolf@redhat.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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rm -f "$TEST_IMG.mid"
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt qcow2
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_supported_proto file
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_supported_os Linux
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function do_run_qemu()
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{
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echo Testing: "$@" | _filter_imgfmt
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$QEMU -nographic -qmp-pretty stdio -serial none "$@"
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echo
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}
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function run_qemu()
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{
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do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_qmp \
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| _filter_qemu_io | _filter_generated_node_ids
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}
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size=64M
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TEST_IMG="$TEST_IMG.base" _make_test_img $size
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TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base"
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_make_test_img -b "$TEST_IMG.mid"
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echo
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echo "Change backing file of mid (opened read-only)"
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echo
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run_qemu -drive if=none,file="$TEST_IMG",backing.node-name=mid <<EOF
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{"execute":"qmp_capabilities"}
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{"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"mid","backing-file":"/dev/null"}}
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{"execute":"quit"}
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EOF
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TEST_IMG="$TEST_IMG.mid" _img_info
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echo
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echo "Change backing file of top (opened writable)"
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echo
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TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base"
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run_qemu -drive if=none,file="$TEST_IMG",node-name=top <<EOF
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{"execute":"qmp_capabilities"}
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{"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"top","backing-file":"/dev/null"}}
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{"execute":"quit"}
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EOF
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_img_info
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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78
tests/qemu-iotests/195.out
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78
tests/qemu-iotests/195.out
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QA output created by 195
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Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=67108864
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Formatting 'TEST_DIR/t.IMGFMT.mid', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.base
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.mid
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Change backing file of mid (opened read-only)
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Testing: -drive if=none,file=TEST_DIR/t.IMGFMT,backing.node-name=mid
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{
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QMP_VERSION
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}
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{
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"return": {
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}
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}
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{
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"return": {
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}
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}
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{
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"return": {
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}
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}
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{
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"timestamp": {
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"seconds": TIMESTAMP,
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"microseconds": TIMESTAMP
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},
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"event": "SHUTDOWN",
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"data": {
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"guest": false
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}
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}
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image: TEST_DIR/t.IMGFMT.mid
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file format: IMGFMT
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virtual size: 64M (67108864 bytes)
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cluster_size: 65536
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backing file: /dev/null
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backing file format: IMGFMT
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Change backing file of top (opened writable)
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Formatting 'TEST_DIR/t.IMGFMT.mid', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.base
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Testing: -drive if=none,file=TEST_DIR/t.IMGFMT,node-name=top
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{
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QMP_VERSION
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}
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{
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"return": {
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}
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}
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{
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"return": {
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}
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}
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{
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"return": {
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}
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}
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{
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"timestamp": {
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"seconds": TIMESTAMP,
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"microseconds": TIMESTAMP
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},
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"event": "SHUTDOWN",
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"data": {
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"guest": false
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}
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}
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image: TEST_DIR/t.IMGFMT
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file format: IMGFMT
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virtual size: 64M (67108864 bytes)
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cluster_size: 65536
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backing file: /dev/null
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backing file format: IMGFMT
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*** done
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@ -189,3 +189,4 @@
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190 rw auto quick
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192 rw auto quick
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194 rw auto migration quick
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195 rw auto quick
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