qemu/tests/qemu-iotests/099
Thomas Huth 21b43d0048 iotests: Check for enabled drivers before testing them
It is possible to enable only a subset of the block drivers with the
"--block-drv-rw-whitelist" option of the "configure" script. All other
drivers are marked as unusable (or only included as read-only with the
"--block-drv-ro-whitelist" option). If an iotest is now using such a
disabled block driver, it is failing - which is bad, since at least the
tests in the "auto" group should be able to deal with this situation.
Thus let's introduce a "_require_drivers" function that can be used by
the shell tests to check for the availability of certain drivers first,
and marks the test as "not run" if one of the drivers is missing.

This patch mainly targets the test in the "auto" group which should
never fail in such a case, but also improves some of the other tests
along the way. Note that we also assume that the "qcow2" and "file"
drivers are always available - otherwise it does not make sense to
run "make check-block" at all (which only tests with qcow2 by default).

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 20190823133552.11680-1-thuth@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2019-09-03 14:56:06 +02:00

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#!/usr/bin/env bash
#
# Test valid filenames for blkdebug and blkverify representatively for
# other protocols (such as NBD) when queried
#
# Copyright (C) 2014 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=mreitz@redhat.com
seq="$(basename $0)"
echo "QA output created by $seq"
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
# Basically all formats, but "raw" has issues with _filter_imgfmt regarding the
# raw comparison image for blkverify; also, all images have to support creation
_supported_fmt qcow qcow2 qed vdi vhdx vmdk vpc
_supported_proto file
_supported_os Linux
_require_drivers blkdebug blkverify
_unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat" \
"subformat=twoGbMaxExtentSparse"
do_run_qemu()
{
$QEMU -nographic -qmp stdio -serial none "$@"
}
run_qemu()
{
# Get the "file": "foo" entry ($foo may only contain escaped double quotes,
# which is how we can extract it)
do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_imgfmt | _filter_qmp \
| _filter_qemu | grep "drv0" \
| sed -e 's/^.*"file": "\(\(\\"\|[^"]\)*\)".*$/\1/' -e 's/\\"/"/g'
}
test_qemu()
{
run_qemu -drive "if=none,id=drv0,$1" <<EOF
{ 'execute': 'qmp_capabilities' }
{ 'execute': 'query-block' }
{ 'execute': 'quit' }
EOF
}
IMG_SIZE=128K
_make_test_img $IMG_SIZE
$QEMU_IMG create -f raw "$TEST_IMG.compare" $IMG_SIZE \
| _filter_testdir | _filter_imgfmt
echo
echo '=== Testing simple filename for blkverify ==='
echo
# This should return simply the filename itself
test_qemu "file=blkverify:$TEST_IMG.compare:$TEST_IMG"
echo
echo '=== Testing filename reconstruction for blkverify ==='
echo
# This should return the same filename as above
test_qemu "file.driver=blkverify,file.raw.filename=$TEST_IMG.compare,file.test.file.filename=$TEST_IMG"
echo
echo '=== Testing JSON filename for blkdebug ==='
echo
# blkdebug cannot create a configuration file, therefore it is unable to
# generate a plain filename here; thus this should return a JSON filename
test_qemu "file.driver=blkdebug,file.image.filename=$TEST_IMG,file.inject-error.0.event=l1_update"
echo
echo '=== Testing indirectly enforced JSON filename ==='
echo
# Because blkdebug cannot return a plain filename, blkverify is forced to
# generate a JSON object here as well
test_qemu "file.driver=blkverify,file.raw.filename=$TEST_IMG.compare,file.test.file.driver=blkdebug,file.test.file.image.filename=$TEST_IMG,file.test.file.inject-error.0.event=l1_update"
echo
echo '=== Testing plain filename for blkdebug ==='
echo
touch "$TEST_DIR/blkdebug.conf"
test_qemu "file.driver=blkdebug,file.config=$TEST_DIR/blkdebug.conf,file.image.filename=$TEST_IMG"
echo
echo '=== Testing plain filename for blkdebug without configuration file ==='
echo
test_qemu "file.driver=blkdebug,file.image.filename=$TEST_IMG"
rm -f "$TEST_IMG.compare" "$TEST_DIR/blkdebug.conf"
# success, all done
echo "*** done"
rm -f $seq.full
status=0