qemu-e2k/tests/qemu-iotests/051
Kevin Wolf b1e6fc0817 block: Fix open flags with BDRV_O_SNAPSHOT
The immediately visible effect of this patch is that it fixes committing
a temporary snapshot to its backing file. Previously, it would fail with
a "permission denied" error because bdrv_inherited_flags() forced the
backing file to be read-only, ignoring the r/w reopen of bdrv_commit().

The bigger problem this revealed is that the original open flags must
actually only be applied to the temporary snapshot, and the original
image file must be treated as a backing file of the temporary snapshot
and get the right flags for that.

Reported-by: Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-09 20:57:31 +02:00

244 lines
7.5 KiB
Bash
Executable File

#!/bin/bash
#
# Test command line configuration of block devices and driver-specific options
#
# Copyright (C) 2013 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"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
_cleanup()
{
_cleanup_test_img
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
_supported_fmt qcow2
_supported_proto file
_supported_os Linux
function do_run_qemu()
{
echo Testing: "$@"
(
if ! test -t 0; then
while read cmd; do
echo $cmd
done
fi
echo quit
) | $QEMU -nographic -monitor stdio -serial none "$@"
echo
}
function run_qemu()
{
do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu
}
size=128M
_make_test_img $size
cp "$TEST_IMG" "$TEST_IMG.orig"
mv "$TEST_IMG" "$TEST_IMG.base"
_make_test_img -b "$TEST_IMG.base" $size
echo
echo === Unknown option ===
echo
run_qemu -drive file="$TEST_IMG",format=qcow2,unknown_opt=
run_qemu -drive file="$TEST_IMG",format=qcow2,unknown_opt=on
run_qemu -drive file="$TEST_IMG",format=qcow2,unknown_opt=1234
run_qemu -drive file="$TEST_IMG",format=qcow2,unknown_opt=foo
echo
echo === Unknown protocol option ===
echo
run_qemu -drive file="$TEST_IMG",format=qcow2,file.unknown_opt=
run_qemu -drive file="$TEST_IMG",format=qcow2,file.unknown_opt=on
run_qemu -drive file="$TEST_IMG",format=qcow2,file.unknown_opt=1234
run_qemu -drive file="$TEST_IMG",format=qcow2,file.unknown_opt=foo
echo
echo === Invalid format ===
echo
run_qemu -drive file="$TEST_IMG",format=foo
run_qemu -drive file="$TEST_IMG",driver=foo
echo
echo === Overriding backing file ===
echo
echo "info block" | run_qemu -drive file="$TEST_IMG",driver=qcow2,backing.file.filename="$TEST_IMG.orig" -nodefaults
echo
echo === Enable and disable lazy refcounting on the command line, plus some invalid values ===
echo
run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=on
run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=off
run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=
run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=42
run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=foo
echo
echo === With version 2 images enabling lazy refcounts must fail ===
echo
_make_test_img -ocompat=0.10 $size
run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=on
run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=off
echo
echo === No medium ===
echo
run_qemu -drive if=floppy
run_qemu -drive if=ide,media=cdrom
run_qemu -drive if=scsi,media=cdrom
run_qemu -drive if=ide
run_qemu -drive if=virtio
run_qemu -drive if=scsi
run_qemu -drive if=none,id=disk -device ide-cd,drive=disk
run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-cd,drive=disk
run_qemu -drive if=none,id=disk -device ide-drive,drive=disk
run_qemu -drive if=none,id=disk -device ide-hd,drive=disk
run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-disk,drive=disk
run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-hd,drive=disk
echo
echo === Read-only ===
echo
run_qemu -drive file="$TEST_IMG",if=floppy,readonly=on
run_qemu -drive file="$TEST_IMG",if=ide,media=cdrom,readonly=on
run_qemu -drive file="$TEST_IMG",if=scsi,media=cdrom,readonly=on
run_qemu -drive file="$TEST_IMG",if=ide,readonly=on
run_qemu -drive file="$TEST_IMG",if=virtio,readonly=on
run_qemu -drive file="$TEST_IMG",if=scsi,readonly=on
run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-cd,drive=disk
run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-cd,drive=disk
run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-drive,drive=disk
run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-hd,drive=disk
run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-disk,drive=disk
run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-hd,drive=disk
echo
echo === Cache modes ===
echo
# Cannot use the test image because cache=none might not work on the host FS
# Use cdrom so that we won't get errors about missing media
run_qemu -drive media=cdrom,cache=none
run_qemu -drive media=cdrom,cache=directsync
run_qemu -drive media=cdrom,cache=writeback
run_qemu -drive media=cdrom,cache=writethrough
run_qemu -drive media=cdrom,cache=unsafe
run_qemu -drive media=cdrom,cache=invalid_value
echo
echo === Specifying the protocol layer ===
echo
run_qemu -drive file="$TEST_IMG",file.driver=file
run_qemu -drive file="$TEST_IMG",file.driver=qcow2
echo
echo === Leaving out required options ===
echo
run_qemu -drive driver=file
run_qemu -drive driver=nbd
run_qemu -drive driver=raw
run_qemu -drive file.driver=file
run_qemu -drive file.driver=nbd
run_qemu -drive file.driver=raw
run_qemu -drive foo=bar
echo
echo === Parsing protocol from file name ===
echo
# Protocol strings are supposed to be parsed from traditional option strings,
# but not when using driver-specific options. We can distinguish them by the
# error message for non-existing files.
run_qemu -hda foo:bar
run_qemu -drive file=foo:bar
run_qemu -drive file.filename=foo:bar
run_qemu -hda "file:$TEST_IMG"
run_qemu -drive file="file:$TEST_IMG"
run_qemu -drive file.filename="file:$TEST_IMG"
echo
echo === Snapshot mode ===
echo
$QEMU_IO -c "write -P 0x11 0 4k" "$TEST_IMG" | _filter_qemu_io
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG" -snapshot | _filter_qemu_io
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file.filename="$TEST_IMG",driver=qcow2,snapshot=on | _filter_qemu_io
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file.filename="$TEST_IMG",driver=qcow2 -snapshot | _filter_qemu_io
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="file:$TEST_IMG" -snapshot | _filter_qemu_io
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="file:$TEST_IMG",snapshot=on | _filter_qemu_io
# Opening a read-only file r/w with snapshot=on
chmod u-w "$TEST_IMG"
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG" -snapshot | _filter_qemu_io
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io
chmod u+w "$TEST_IMG"
$QEMU_IO -c "read -P 0x11 0 4k" "$TEST_IMG" | _filter_qemu_io
echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG",snapshot=off | _filter_qemu_io
$QEMU_IO -c "read -P 0x22 0 4k" "$TEST_IMG" | _filter_qemu_io
echo -e 'qemu-io ide0-hd0 "write -P 0x33 0 4k"\ncommit ide0-hd0' | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io
$QEMU_IO -c "read -P 0x33 0 4k" "$TEST_IMG" | _filter_qemu_io
# success, all done
echo "*** done"
rm -f $seq.full
status=0