#!/usr/bin/env bash
# group: rw auto quick
#
# Test qcow2 lazy refcounts
#
# Copyright (C) 2012 Red Hat, Inc.
# Copyright IBM, Corp. 2010
#
# Based on test 038.
#
# 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=stefanha@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
_supported_fmt qcow2
_supported_proto file fuse
_supported_os Linux
_default_cache_mode writethrough
_supported_cache_modes writethrough
# Some of these test cases expect no external data file so that all
# clusters are part of the qcow2 image and refcounted
_unsupported_imgopts data_file
size=128M
echo
echo "== Checking that image is clean on shutdown =="
_make_test_img -o "compat=1.1,lazy_refcounts=on" $size
$QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
# The dirty bit must not be set
_qcow2_dump_header | grep incompatible_features
_check_test_img
echo
echo "== Creating a dirty image file =="
_make_test_img -o "compat=1.1,lazy_refcounts=on" $size
_NO_VALGRIND \
$QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
| _filter_qemu_io
# The dirty bit must be set
_qcow2_dump_header | grep incompatible_features
_check_test_img
echo
echo "== Read-only access must still work =="
$QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
# The dirty bit must be set
_qcow2_dump_header | grep incompatible_features
echo
echo "== Repairing the image file must succeed =="
_check_test_img -r all
# The dirty bit must not be set
_qcow2_dump_header | grep incompatible_features
echo
echo "== Data should still be accessible after repair =="
$QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
echo
echo "== Opening a dirty image read/write should repair it =="
_make_test_img -o "compat=1.1,lazy_refcounts=on" $size
_NO_VALGRIND \
$QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
| _filter_qemu_io
# The dirty bit must be set
_qcow2_dump_header | grep incompatible_features
$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
# The dirty bit must not be set
_qcow2_dump_header | grep incompatible_features
echo
echo "== Creating an image file with lazy_refcounts=off =="
_make_test_img -o "compat=1.1,lazy_refcounts=off" $size
_NO_VALGRIND \
$QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
| _filter_qemu_io
# The dirty bit must not be set since lazy_refcounts=off
_qcow2_dump_header | grep incompatible_features
_check_test_img
echo
echo "== Committing to a backing file with lazy_refcounts=on =="
TEST_IMG="$TEST_IMG".base _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
_make_test_img -o "compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base" \
-F $IMGFMT $size
$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
$QEMU_IMG commit "$TEST_IMG"
# The dirty bit must not be set
_qcow2_dump_header | grep incompatible_features
_qcow2_dump_header "$TEST_IMG".base | grep incompatible_features
_check_test_img
TEST_IMG="$TEST_IMG".base _check_test_img
echo
echo "== Changing lazy_refcounts setting at runtime =="
_make_test_img -o "compat=1.1,lazy_refcounts=off" $size
_NO_VALGRIND \
$QEMU_IO -c "reopen -o lazy-refcounts=on" \
-c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
| _filter_qemu_io
# The dirty bit must be set
_qcow2_dump_header | grep incompatible_features
_check_test_img
_make_test_img -o "compat=1.1,lazy_refcounts=on" $size
_NO_VALGRIND \
$QEMU_IO -c "reopen -o lazy-refcounts=off" \
-c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
| _filter_qemu_io
# The dirty bit must not be set
_qcow2_dump_header | grep incompatible_features
_check_test_img
# success, all done
echo "*** done"
rm -f $seq.full
status=0
