#!/usr/bin/env bash
#
# Test image locking
#
# Copyright 2016, 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=famz@redhat.com
seq="$(basename $0)"
echo "QA output created by $seq"
tmp=/tmp/$$
status=1 # failure is the default!
_cleanup()
{
_cleanup_test_img
for img in "${TEST_IMG}".{base,overlay,convert,a,b,c,lnk}; do
_rm_test_img "$img"
done
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.qemu
size=32M
_check_ofd()
{
_make_test_img $size >/dev/null
if $QEMU_IMG_PROG info --image-opts "driver=file,locking=on,filename=$TEST_IMG" 2>&1 |
grep -q 'falling back to POSIX file'; then
return 1
else
return 0
fi
}
_check_ofd || _notrun "OFD lock not available"
_supported_fmt qcow2
_supported_proto file
_run_cmd()
{
echo
(echo "$@"; "$@" 2>&1 1>/dev/null) | _filter_testdir
}
_do_run_qemu()
{
(
if ! test -t 0; then
while read cmd; do
echo $cmd
done
fi
echo quit
) | $QEMU -nographic -monitor stdio -serial none "$@" 1>/dev/null
}
_run_qemu_with_images()
{
_do_run_qemu \
$(for i in $@; do echo "-drive if=none,file=$i"; done) 2>&1 \
| _filter_testdir | _filter_qemu
}
echo "== readonly=off,force-share=on should be rejected =="
_run_qemu_with_images null-co://,readonly=off,force-share=on
for opts1 in "" "read-only=on" "read-only=on,force-share=on"; do
echo
echo "== Creating base image =="
TEST_IMG="${TEST_IMG}.base" _make_test_img $size
echo
echo "== Creating test image =="
_make_test_img -b "${TEST_IMG}.base" -F $IMGFMT
echo
echo "== Launching QEMU, opts: '$opts1' =="
_launch_qemu -drive file="${TEST_IMG}",if=none,$opts1
h=$QEMU_HANDLE
for opts2 in "" "read-only=on" "read-only=on,force-share=on"; do
echo
echo "== Launching another QEMU, opts: '$opts2' =="
echo "quit" | \
$QEMU -nographic -monitor stdio \
-drive file="${TEST_IMG}",if=none,$opts2 2>&1 1>/dev/null | \
_filter_testdir | _filter_qemu
done
for L in "" "-U"; do
echo
echo "== Running utility commands $L =="
_run_cmd $QEMU_IO $L -c "read 0 512" "${TEST_IMG}"
_run_cmd $QEMU_IO $L -r -c "read 0 512" "${TEST_IMG}"
_run_cmd $QEMU_IO -c "open $L ${TEST_IMG}" -c "read 0 512"
_run_cmd $QEMU_IO -c "open -r $L ${TEST_IMG}" -c "read 0 512"
_run_cmd $QEMU_IMG info $L "${TEST_IMG}"
_run_cmd $QEMU_IMG check $L "${TEST_IMG}"
_run_cmd $QEMU_IMG compare $L "${TEST_IMG}" "${TEST_IMG}"
_run_cmd $QEMU_IMG map $L "${TEST_IMG}"
_run_cmd $QEMU_IMG amend -o "size=$size" $L "${TEST_IMG}"
_run_cmd $QEMU_IMG commit $L "${TEST_IMG}"
_run_cmd $QEMU_IMG resize $L "${TEST_IMG}" $size
_run_cmd $QEMU_IMG rebase $L "${TEST_IMG}" -b "${TEST_IMG}.base" -F $IMGFMT
_run_cmd $QEMU_IMG snapshot -l $L "${TEST_IMG}"
_run_cmd $QEMU_IMG convert $L "${TEST_IMG}" "${TEST_IMG}.convert"
_run_cmd $QEMU_IMG dd $L if="${TEST_IMG}" of="${TEST_IMG}.convert" bs=512 count=1
_run_cmd $QEMU_IMG bench $L -c 1 "${TEST_IMG}"
_run_cmd $QEMU_IMG bench $L -w -c 1 "${TEST_IMG}"
# qemu-img create does not support -U
if [ -z "$L" ]; then
_run_cmd $QEMU_IMG create -f $IMGFMT "${TEST_IMG}" \
-b ${TEST_IMG}.base -F $IMGFMT
# Read the file format. It used to be the case that
# file-posix simply truncated the file, but the qcow2
# driver then failed to format it because it was unable
# to acquire the necessary WRITE permission. However, the
# truncation was already wrong, and the whole process
# resulted in the file being completely empty and thus its
# format would be detected to be raw.
# So we read it here to see that creation either completed
# successfully (thus the format is qcow2) or it aborted
# before the file was changed at all (thus the format stays
# qcow2).
_img_info -U | grep 'file format'
fi
done
_send_qemu_cmd $h "{ 'execute': 'quit' }" ''
echo
echo "Round done"
_cleanup_qemu
done
test_opts="read-only=off read-only=on read-only=on,force-share=on"
for opt1 in $test_opts; do
for opt2 in $test_opts; do
echo
echo "== Two devices with the same image ($opt1 - $opt2) =="
_run_qemu_with_images "${TEST_IMG},$opt1" "${TEST_IMG},$opt2"
done
done
echo
echo "== Creating ${TEST_IMG}.[abc] ==" | _filter_testdir
$QEMU_IMG create -f qcow2 "${TEST_IMG}.a" -b "${TEST_IMG}" -F $IMGFMT | _filter_img_create
$QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}" -F $IMGFMT | _filter_img_create
$QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b" -F $IMGFMT \
| _filter_img_create
echo
echo "== Two devices sharing the same file in backing chain =="
_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.b"
_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}.c"
echo
echo "== Backing image also as an active device =="
_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG}"
echo
echo "== Backing image also as an active device (ro) =="
_run_qemu_with_images "${TEST_IMG}.a" "${TEST_IMG},readonly=on"
echo
echo "== Symbolic link =="
rm -f "${TEST_IMG}.lnk" &>/dev/null
ln -s ${TEST_IMG} "${TEST_IMG}.lnk" || echo "Failed to create link"
_run_qemu_with_images "${TEST_IMG}.lnk" "${TEST_IMG}"
echo
echo "== Active commit to intermediate layer should work when base in use =="
_launch_qemu -drive format=$IMGFMT,file="${TEST_IMG}.a",id=drive0,if=none \
-device virtio-blk,drive=drive0
_send_qemu_cmd $QEMU_HANDLE \
"{ 'execute': 'qmp_capabilities' }" \
'return'
_run_cmd $QEMU_IMG commit -b "${TEST_IMG}.b" "${TEST_IMG}.c"
_cleanup_qemu
_launch_qemu
_send_qemu_cmd $QEMU_HANDLE \
"{ 'execute': 'qmp_capabilities' }" \
'return'
echo "Adding drive"
_send_qemu_cmd $QEMU_HANDLE \
"{ 'execute': 'human-monitor-command',
'arguments': { 'command-line': 'drive_add 0 if=none,id=d0,file=${TEST_IMG}' } }" \
'return'
_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512'
echo "Creating overlay with qemu-img when the guest is running should be allowed"
_run_cmd $QEMU_IMG create -f $IMGFMT -b "${TEST_IMG}" -F $IMGFMT "${TEST_IMG}.overlay"
echo "== Closing an image should unlock it =="
_send_qemu_cmd $QEMU_HANDLE \
"{ 'execute': 'human-monitor-command',
'arguments': { 'command-line': 'drive_del d0' } }" \
'return'
_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512'
echo "Adding two and closing one"
for d in d0 d1; do
_send_qemu_cmd $QEMU_HANDLE \
"{ 'execute': 'human-monitor-command',
'arguments': { 'command-line': 'drive_add 0 if=none,id=$d,file=${TEST_IMG},readonly=on' } }" \
'return'
done
_run_cmd $QEMU_IMG info "${TEST_IMG}"
_send_qemu_cmd $QEMU_HANDLE \
"{ 'execute': 'human-monitor-command',
'arguments': { 'command-line': 'drive_del d0' } }" \
'return'
_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512'
echo "Closing the other"
_send_qemu_cmd $QEMU_HANDLE \
"{ 'execute': 'human-monitor-command',
'arguments': { 'command-line': 'drive_del d1' } }" \
'return'
_run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512'
_cleanup_qemu
echo
echo "== Detecting -U and force-share conflicts =="
echo
echo 'No conflict:'
$QEMU_IMG info -U --image-opts driver=null-co,force-share=on
echo
echo 'Conflict:'
$QEMU_IMG info -U --image-opts driver=null-co,force-share=off
echo
echo 'No conflict:'
$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=on'
echo
echo 'Conflict:'
$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=off'
# success, all done
echo "*** done"
rm -f $seq.full
status=0
