f91ecbd74e
Just rm will not delete external data files. Use _rm_test_img every time we delete a test image. (In the process, clean up the indentation of every _cleanup() this patch touches.) ((Also, use quotes consistently. I am happy to see unquoted instances like "rm -rf $TEST_DIR/..." go.)) Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> Message-id: 20191107163708.833192-16-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
123 lines
3.8 KiB
Bash
Executable File
123 lines
3.8 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
#
|
|
# Test case for copy-on-read into qcow2
|
|
#
|
|
# Copyright (C) 2017 Red Hat, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
# creator
|
|
owner=eblake@redhat.com
|
|
|
|
seq="$(basename $0)"
|
|
echo "QA output created by $seq"
|
|
|
|
status=1 # failure is the default!
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common.rc
|
|
. ./common.filter
|
|
|
|
TEST_WRAP="$TEST_DIR/t.wrap.qcow2"
|
|
BLKDBG_CONF="$TEST_DIR/blkdebug.conf"
|
|
|
|
# Sanity check: our use of blkdebug fails if $TEST_DIR contains spaces
|
|
# or other problems
|
|
case "$TEST_DIR" in
|
|
*[^-_a-zA-Z0-9/]*)
|
|
_notrun "Suspicious TEST_DIR='$TEST_DIR', cowardly refusing to run" ;;
|
|
esac
|
|
|
|
_cleanup()
|
|
{
|
|
_cleanup_test_img
|
|
_rm_test_img "$TEST_WRAP"
|
|
rm -f "$BLKDBG_CONF"
|
|
}
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
# Test is supported for any backing file; but we force qcow2 for our wrapper.
|
|
_supported_fmt generic
|
|
_supported_proto generic
|
|
# LUKS support may be possible, but it complicates things.
|
|
_unsupported_fmt luks
|
|
_unsupported_imgopts "subformat=streamOptimized"
|
|
|
|
echo
|
|
echo '=== Copy-on-read ==='
|
|
echo
|
|
|
|
# Prep the images
|
|
# VPC rounds image sizes to a specific geometry, force a specific size.
|
|
if [ "$IMGFMT" = "vpc" ]; then
|
|
IMGOPTS=$(_optstr_add "$IMGOPTS" "force_size")
|
|
fi
|
|
_make_test_img 4G
|
|
$QEMU_IO -c "write -P 55 3G 1k" "$TEST_IMG" | _filter_qemu_io
|
|
IMGPROTO=file IMGFMT=qcow2 TEST_IMG_FILE="$TEST_WRAP" \
|
|
_make_test_img --no-opts -F "$IMGFMT" -b "$TEST_IMG" | _filter_img_create
|
|
$QEMU_IO -f qcow2 -c "write -z -u 1M 64k" "$TEST_WRAP" | _filter_qemu_io
|
|
|
|
# Ensure that a read of two clusters, but where one is already allocated,
|
|
# does not re-write the allocated cluster
|
|
cat > "$BLKDBG_CONF" <<EOF
|
|
[inject-error]
|
|
event = "cor_write"
|
|
sector = "2048"
|
|
EOF
|
|
$QEMU_IO -c "open -C \
|
|
-o driver=blkdebug,config=$BLKDBG_CONF,image.driver=qcow2 $TEST_WRAP" \
|
|
-c "read -P 0 1M 128k" | _filter_qemu_io
|
|
|
|
# Read the areas we want copied. A zero-length read should still be a
|
|
# no-op. The next read is under 2G, but aligned so that rounding to
|
|
# clusters copies more than 2G of zeroes. The final read will pick up
|
|
# the non-zero data in the same cluster. Since a 2G read may exhaust
|
|
# memory on some machines (particularly 32-bit), we skip the test if
|
|
# that fails due to memory pressure.
|
|
$QEMU_IO -f qcow2 -C -c "read 0 0" "$TEST_WRAP" | _filter_qemu_io
|
|
output=$($QEMU_IO -f qcow2 -C -c "read -P 0 1k $((2*1024*1024*1024 - 512))" \
|
|
"$TEST_WRAP" 2>&1 | _filter_qemu_io)
|
|
case $output in
|
|
*allocate*)
|
|
_notrun "Insufficent memory to run test" ;;
|
|
*) printf '%s\n' "$output" ;;
|
|
esac
|
|
$QEMU_IO -f qcow2 -C -c "read -P 0 $((3*1024*1024*1024 + 1024)) 1k" \
|
|
"$TEST_WRAP" | _filter_qemu_io
|
|
|
|
# Copy-on-read is incompatible with read-only
|
|
$QEMU_IO -f qcow2 -C -r "$TEST_WRAP" 2>&1 | _filter_testdir
|
|
|
|
# Break the backing chain, and show that images are identical, and that
|
|
# we properly copied over explicit zeros.
|
|
$QEMU_IMG rebase -u -b "" -f qcow2 "$TEST_WRAP"
|
|
$QEMU_IO -f qcow2 -c map "$TEST_WRAP"
|
|
_check_test_img
|
|
$QEMU_IMG compare -f $IMGFMT -F qcow2 "$TEST_IMG" "$TEST_WRAP"
|
|
|
|
echo
|
|
echo '=== Partial final cluster ==='
|
|
echo
|
|
|
|
_make_test_img 1024
|
|
$QEMU_IO -f $IMGFMT -C -c 'read 0 1024' "$TEST_IMG" | _filter_qemu_io
|
|
$QEMU_IO -f $IMGFMT -c map "$TEST_IMG"
|
|
_check_test_img
|
|
|
|
# success, all done
|
|
echo '*** done'
|
|
status=0
|