tests/qemu-iotests/153 - qemu - Git at Google

 #!/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"

     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 "" $L "${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"
         _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
             # 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}"
     $QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}"
     $QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b"
 ) | _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}" "${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
	#!/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"

	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 "" $L "${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"
	_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
	# 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}"
	$QEMU_IMG create -f qcow2 "${TEST_IMG}.b" -b "${TEST_IMG}"
	$QEMU_IMG create -f qcow2 "${TEST_IMG}.c" -b "${TEST_IMG}.b"
	) \| _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}" "${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