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#!/usr/bin/env bash
#
# Test qcow2 reopen
#
# Copyright (C) 2015 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"
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
. ./common.qemu
_supported_fmt qcow2
_supported_proto file fuse
_supported_os Linux
# We are going to use lazy-refcounts
_unsupported_imgopts 'compat=0.10'
_make_test_img 64M
echo === Try setting valid values for all options ===
echo
# Try all options and then check that all of the basic I/O operations still
# work on this image.
$QEMU_IO \
-c "reopen -o lazy-refcounts=on,pass-discard-request=on" \
-c "reopen -o lazy-refcounts=off,pass-discard-request=off" \
-c "reopen -o pass-discard-snapshot=on,pass-discard-other=on" \
-c "reopen -o pass-discard-snapshot=off,pass-discard-other=off" \
-c "reopen -o overlap-check=all" \
-c "reopen -o overlap-check=none" \
-c "reopen -o overlap-check=cached" \
-c "reopen -o overlap-check=constant" \
-c "reopen -o overlap-check.template=all" \
-c "reopen -o overlap-check.template=none" \
-c "reopen -o overlap-check.template=cached" \
-c "reopen -o overlap-check.template=constant" \
-c "reopen -o overlap-check.main-header=on" \
-c "reopen -o overlap-check.main-header=off" \
-c "reopen -o overlap-check.active-l1=on" \
-c "reopen -o overlap-check.active-l1=off" \
-c "reopen -o overlap-check.active-l2=on" \
-c "reopen -o overlap-check.active-l2=off" \
-c "reopen -o overlap-check.refcount-table=on" \
-c "reopen -o overlap-check.refcount-table=off" \
-c "reopen -o overlap-check.refcount-block=on" \
-c "reopen -o overlap-check.refcount-block=off" \
-c "reopen -o overlap-check.snapshot-table=on" \
-c "reopen -o overlap-check.snapshot-table=off" \
-c "reopen -o overlap-check.inactive-l1=on" \
-c "reopen -o overlap-check.inactive-l1=off" \
-c "reopen -o overlap-check.inactive-l2=on" \
-c "reopen -o overlap-check.inactive-l2=off" \
-c "reopen -o cache-size=1M" \
-c "reopen -o l2-cache-size=512k" \
-c "reopen -o l2-cache-entry-size=512" \
-c "reopen -o l2-cache-entry-size=4k" \
-c "reopen -o l2-cache-entry-size=64k" \
-c "reopen -o refcount-cache-size=128k" \
-c "reopen -o cache-clean-interval=5" \
-c "reopen -o cache-clean-interval=0" \
-c "reopen -o cache-clean-interval=10" \
\
-c "write -P 55 0 32M" \
-c "read -P 55 0 32M" \
-c "discard 0 32M" \
-c "write -z 0 32M" \
-c "read -P 0 0 32M" \
\
"$TEST_IMG" | _filter_qemu_io
echo
echo === Try setting some invalid values ===
echo
$QEMU_IO \
-c "reopen -o lazy-refcounts=42" \
-c "reopen -o cache-size=1M,l2-cache-size=64k,refcount-cache-size=64k" \
-c "reopen -o cache-size=1M,l2-cache-size=2M" \
-c "reopen -o cache-size=1M,refcount-cache-size=2M" \
-c "reopen -o l2-cache-entry-size=33k" \
-c "reopen -o l2-cache-entry-size=128k" \
-c "reopen -o refcount-cache-size=256T" \
-c "reopen -o overlap-check=constant,overlap-check.template=all" \
-c "reopen -o overlap-check=blubb" \
-c "reopen -o overlap-check.template=blubb" \
-c "reopen -o cache-clean-interval=-1" \
"$TEST_IMG" | _filter_qemu_io
_make_test_img -o "cluster_size=256k" 32P
$QEMU_IO \
-c "reopen -o l2-cache-entry-size=512,l2-cache-size=1T" \
"$TEST_IMG" | _filter_qemu_io
_make_test_img 64M
echo
echo === Test transaction semantics ===
echo
# Whether lazy-refcounts was actually enabled can easily be tested: Check if
# the dirty bit is set after a crash
_NO_VALGRIND \
$QEMU_IO \
-c "reopen -o lazy-refcounts=on,overlap-check=blubb" \
-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
# (Filter the external data file bit)
if $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features \
| grep -q '\<0\>'
then
echo 'ERROR: Dirty bit set'
else
echo 'OK: Dirty bit not set'
fi
# Similarly we can test whether corruption detection has been enabled:
# Create L1, overwrite refcounts, force allocation of L2 by writing
# data.
# Disabling the checks should fail, so the corruption must be detected.
_make_test_img 64M
poke_file "$TEST_IMG" "$((0x20000))" "\x00\x00\x00\x00\x00\x00\x00\x00"
$QEMU_IO \
-c "reopen -o overlap-check=none,lazy-refcounts=42" \
-c "write 64k 64k" \
"$TEST_IMG" 2>&1 | _filter_qemu_io
# success, all done
echo '*** done'
rm -f $seq.full
status=0
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