qemu/tests/qemu-iotests/305
Max Reitz 57284d2ada iotests: Enable fuse for many tests
Many tests (that do not support generic protocols) can run just fine
with FUSE-exported images, so allow them to.  Note that this is no
attempt at being definitely complete.  There are some tests that might
be modified to run on FUSE, but this patch still skips them.  This patch
only tries to pick the rather low-hanging fruits.

Note that 221 and 250 only pass when .lseek is correctly implemented,
which is only possible with a libfuse that is 3.8 or newer.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201027190600.192171-20-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-12-11 17:52:40 +01:00

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#!/usr/bin/env bash
#
# Test the handling of errors in write requests with multiple allocations
#
# Copyright (C) 2020 Igalia, S.L.
# Author: Alberto Garcia <berto@igalia.com>
#
# 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=berto@igalia.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
_supported_fmt qcow2
_supported_proto file fuse
_supported_os Linux
_unsupported_imgopts cluster_size refcount_bits extended_l2 compat=0.10 data_file
echo '### Create the image'
_make_test_img -o refcount_bits=64,cluster_size=1k 1M
# The reference counts of the clusters for the first 123k of this
# write request are stored in the first refcount block. The last
# cluster (guest offset 123k) is referenced in the second refcount
# block.
echo '### Fill the first refcount block and one data cluster from the second'
$QEMU_IO -c 'write 0 124k' "$TEST_IMG" | _filter_qemu_io
echo '### Discard two of the last data clusters, leave one in the middle'
$QEMU_IO -c 'discard 121k 1k' "$TEST_IMG" | _filter_qemu_io
$QEMU_IO -c 'discard 123k 1k' "$TEST_IMG" | _filter_qemu_io
echo '### Corrupt the offset of the second refcount block'
refcount_table_offset=$(peek_file_be "$TEST_IMG" 48 8)
poke_file "$TEST_IMG" $(($refcount_table_offset+14)) "\x06"
# This tries to allocate the two clusters discarded earlier (guest
# offsets 121k and 123k). Their reference counts are in the first and
# second refcount blocks respectively, but only the first one can be
# allocated correctly because the second entry of the refcount table
# is corrupted.
echo '### Try to allocate the discarded clusters again'
$QEMU_IO -c 'write 121k 3k' "$TEST_IMG" | _filter_qemu_io
# success, all done
echo "*** done"
rm -f $seq.full
status=0