ca1dcc9138
Apparently 'qemu-img info' doesn't report the backing file format field
for qed (as it does for qcow2):
$ qemu-img create -f qed base.qed 1M && qemu-img create -f qed -b base.qed -F qed top.qed 1M
$ qemu-img create -f qcow2 base.qcow2 1M && qemu-img create -f qcow2 -b base.qcow2 -F qcow2 top.qcow2 1M
$ qemu-img info top.qed | grep 'backing file format'
$ qemu-img info top.qcow2 | grep 'backing file format'
backing file format: qcow2
This leads to the 024 test failure with -qed. Let's just filter the
field out and exclude it from the output.
This is a fixup for the commit f93e65ee51 ("iotests/{024, 271}: add
testcases for qemu-img rebase").
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
Message-ID: <20240730094701.790624-1-andrey.drobyshev@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
324 lines
9.6 KiB
Bash
Executable File
324 lines
9.6 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# group: rw backing auto quick
|
|
#
|
|
# Rebasing COW images
|
|
#
|
|
# Copyright (C) 2009 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 $seq"
|
|
|
|
status=1 # failure is the default!
|
|
|
|
_cleanup()
|
|
{
|
|
_cleanup_test_img
|
|
_rm_test_img "$TEST_DIR/t.$IMGFMT.base_old"
|
|
_rm_test_img "$TEST_DIR/t.$IMGFMT.base_new"
|
|
|
|
_rm_test_img "$TEST_DIR/subdir/t.$IMGFMT"
|
|
_rm_test_img "$TEST_DIR/subdir/t.$IMGFMT.base_old"
|
|
_rm_test_img "$TEST_DIR/subdir/t.$IMGFMT.base_new"
|
|
rmdir "$TEST_DIR/subdir" 2> /dev/null
|
|
}
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common.rc
|
|
. ./common.filter
|
|
. ./common.pattern
|
|
|
|
# Currently only qcow2 and qed support rebasing
|
|
_supported_fmt qcow2 qed
|
|
_supported_proto file
|
|
_supported_os Linux
|
|
|
|
CLUSTER_SIZE=65536
|
|
|
|
# Cluster allocations to be tested:
|
|
#
|
|
# Backing (old) 11 -- 11 -- 11 -- 11 --
|
|
# Backing (new) 22 22 -- -- 22 22 -- --
|
|
# COW image 33 33 33 33 -- -- -- --
|
|
#
|
|
# The pattern is written twice to have both an alloc -> non-alloc and a
|
|
# non-alloc -> alloc transition in the COW image.
|
|
|
|
echo "Creating backing file"
|
|
echo
|
|
|
|
TEST_IMG_SAVE="$TEST_IMG"
|
|
TEST_IMG="$TEST_IMG.base_old"
|
|
|
|
_make_test_img 1G
|
|
io_pattern writev 0 $CLUSTER_SIZE $((2 * CLUSTER_SIZE)) 8 0x11
|
|
|
|
TEST_IMG="$TEST_IMG_SAVE.base_new"
|
|
|
|
echo "Creating new backing file"
|
|
echo
|
|
|
|
_make_test_img 1G
|
|
io_pattern writev 0 $((2 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 4 0x22
|
|
|
|
|
|
TEST_IMG="$TEST_IMG_SAVE"
|
|
|
|
echo "Creating COW image"
|
|
echo
|
|
|
|
_make_test_img -b "$TEST_IMG.base_old" -F $IMGFMT 1G
|
|
io_pattern writev 0 $((4 * CLUSTER_SIZE)) 0 1 0x33
|
|
io_pattern writev $((8 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 0 1 0x33
|
|
|
|
echo "Read before the rebase to make sure everything is set up correctly"
|
|
echo
|
|
io_pattern readv $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((4 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
|
|
io_pattern readv $((5 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
|
|
io_pattern readv $((6 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
|
|
io_pattern readv $((7 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
|
|
io_pattern readv $((8 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((9 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((10 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((11 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((12 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
|
|
io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
|
|
io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
|
|
io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
|
|
|
|
echo
|
|
echo Rebase and test again
|
|
echo
|
|
$QEMU_IMG rebase -b "$TEST_IMG.base_new" -F $IMGFMT "$TEST_IMG"
|
|
io_pattern readv $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((4 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
|
|
io_pattern readv $((5 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
|
|
io_pattern readv $((6 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
|
|
io_pattern readv $((7 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
|
|
io_pattern readv $((8 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((9 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((10 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((11 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33
|
|
io_pattern readv $((12 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
|
|
io_pattern readv $((13 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
|
|
io_pattern readv $((14 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11
|
|
io_pattern readv $((15 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00
|
|
|
|
echo
|
|
echo "=== Test rebase in a subdirectory of the working directory ==="
|
|
echo
|
|
|
|
# Clean up the old images beforehand so they do not interfere with
|
|
# this test
|
|
_cleanup
|
|
|
|
mkdir "$TEST_DIR/subdir"
|
|
|
|
# Relative to the overlay
|
|
BASE_OLD_OREL="t.$IMGFMT.base_old"
|
|
BASE_NEW_OREL="t.$IMGFMT.base_new"
|
|
|
|
# Relative to $TEST_DIR (which is going to be our working directory)
|
|
OVERLAY_WREL="subdir/t.$IMGFMT"
|
|
|
|
BASE_OLD="$TEST_DIR/subdir/$BASE_OLD_OREL"
|
|
BASE_NEW="$TEST_DIR/subdir/$BASE_NEW_OREL"
|
|
OVERLAY="$TEST_DIR/$OVERLAY_WREL"
|
|
|
|
# Test done here:
|
|
#
|
|
# Backing (old): 11 11 -- 11
|
|
# Backing (new): -- 22 22 11
|
|
# Overlay: -- -- -- --
|
|
#
|
|
# Rebasing works, we have verified that above. Here, we just want to
|
|
# see that rebasing is done for the correct target backing file.
|
|
|
|
TEST_IMG=$BASE_OLD _make_test_img 1M
|
|
TEST_IMG=$BASE_NEW _make_test_img 1M
|
|
TEST_IMG=$OVERLAY _make_test_img -b "$BASE_OLD_OREL" -F $IMGFMT 1M
|
|
|
|
echo
|
|
|
|
$QEMU_IO "$BASE_OLD" \
|
|
-c "write -P 0x11 $((0 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \
|
|
-c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \
|
|
| _filter_qemu_io
|
|
|
|
$QEMU_IO "$BASE_NEW" \
|
|
-c "write -P 0x22 $((1 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE))" \
|
|
-c "write -P 0x11 $((3 * CLUSTER_SIZE)) $((1 * CLUSTER_SIZE))" \
|
|
| _filter_qemu_io
|
|
|
|
echo
|
|
|
|
pushd "$TEST_DIR" >/dev/null
|
|
$QEMU_IMG rebase -f "$IMGFMT" -b "$BASE_NEW_OREL" -F $IMGFMT "$OVERLAY_WREL"
|
|
popd >/dev/null
|
|
|
|
# Verify the backing path is correct
|
|
TEST_IMG=$OVERLAY _img_info | grep '^backing file:'
|
|
|
|
echo
|
|
|
|
# Verify the data is correct
|
|
$QEMU_IO "$OVERLAY" \
|
|
-c "read -P 0x11 $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
|
|
-c "read -P 0x11 $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
|
|
-c "read -P 0x00 $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
|
|
-c "read -P 0x11 $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE" \
|
|
| _filter_qemu_io
|
|
|
|
echo
|
|
|
|
# Verify that cluster #3 is not allocated (because it is the same in
|
|
# $BASE_OLD and $BASE_NEW)
|
|
$QEMU_IMG map "$OVERLAY" | _filter_qemu_img_map
|
|
|
|
# Check that rebase within the chain is working when
|
|
# overlay_size > old_backing_size
|
|
#
|
|
# base_new <-- base_old <-- overlay
|
|
#
|
|
# Backing (new): 11 11 11 11 11
|
|
# Backing (old): 22 22 22 22
|
|
# Overlay: -- -- -- -- --
|
|
#
|
|
# As a result, overlay should contain data identical to base_old, with the
|
|
# last cluster remaining unallocated.
|
|
|
|
echo
|
|
echo "=== Test rebase within one backing chain ==="
|
|
echo
|
|
|
|
echo "Creating backing chain"
|
|
echo
|
|
|
|
TEST_IMG=$BASE_NEW _make_test_img $(( CLUSTER_SIZE * 5 ))
|
|
TEST_IMG=$BASE_OLD _make_test_img -b "$BASE_NEW" -F $IMGFMT \
|
|
$(( CLUSTER_SIZE * 4 ))
|
|
TEST_IMG=$OVERLAY _make_test_img -b "$BASE_OLD" -F $IMGFMT \
|
|
$(( CLUSTER_SIZE * 5 ))
|
|
|
|
echo
|
|
echo "Fill backing files with data"
|
|
echo
|
|
|
|
$QEMU_IO "$BASE_NEW" -c "write -P 0x11 0 $(( CLUSTER_SIZE * 5 ))" \
|
|
| _filter_qemu_io
|
|
$QEMU_IO "$BASE_OLD" -c "write -P 0x22 0 $(( CLUSTER_SIZE * 4 ))" \
|
|
| _filter_qemu_io
|
|
|
|
echo
|
|
echo "Check the last cluster is zeroed in overlay before the rebase"
|
|
echo
|
|
$QEMU_IO "$OVERLAY" -c "read -P 0x00 $(( CLUSTER_SIZE * 4 )) $CLUSTER_SIZE" \
|
|
| _filter_qemu_io
|
|
|
|
echo
|
|
echo "Rebase onto another image in the same chain"
|
|
echo
|
|
|
|
$QEMU_IMG rebase -b "$BASE_NEW" -F $IMGFMT "$OVERLAY"
|
|
|
|
echo "Verify that data is read the same before and after rebase"
|
|
echo
|
|
|
|
# Verify the first 4 clusters are still read the same as in the old base
|
|
$QEMU_IO "$OVERLAY" -c "read -P 0x22 0 $(( CLUSTER_SIZE * 4 ))" \
|
|
| _filter_qemu_io
|
|
# Verify the last cluster still reads as zeroes
|
|
$QEMU_IO "$OVERLAY" -c "read -P 0x00 $(( CLUSTER_SIZE * 4 )) $CLUSTER_SIZE" \
|
|
| _filter_qemu_io
|
|
|
|
echo
|
|
|
|
# Check that rebase within the chain is working when
|
|
# overlay cluster size > backings cluster size
|
|
# (here overlay cluster size == 2 * backings cluster size)
|
|
#
|
|
# base_new <-- base_old <-- overlay
|
|
#
|
|
# Backing (new): -- -- -- -- -- --
|
|
# Backing (old): -- 11 -- -- 22 --
|
|
# Overlay: |-- --|-- --|-- --|
|
|
#
|
|
# We should end up having 1st and 3rd cluster allocated, and their halves
|
|
# being read as zeroes.
|
|
|
|
echo
|
|
echo "=== Test rebase with different cluster sizes ==="
|
|
echo
|
|
|
|
echo "Creating backing chain"
|
|
echo
|
|
|
|
TEST_IMG=$BASE_NEW _make_test_img $(( CLUSTER_SIZE * 6 ))
|
|
TEST_IMG=$BASE_OLD _make_test_img -b "$BASE_NEW" -F $IMGFMT \
|
|
$(( CLUSTER_SIZE * 6 ))
|
|
CLUSTER_SIZE=$(( CLUSTER_SIZE * 2 )) TEST_IMG=$OVERLAY \
|
|
_make_test_img -b "$BASE_OLD" -F $IMGFMT $(( CLUSTER_SIZE * 6 ))
|
|
|
|
TEST_IMG=$OVERLAY _img_info | grep -v '^backing file format:'
|
|
|
|
echo
|
|
echo "Fill backing files with data"
|
|
echo
|
|
|
|
$QEMU_IO "$BASE_OLD" -c "write -P 0x11 $CLUSTER_SIZE $CLUSTER_SIZE" \
|
|
-c "write -P 0x22 $(( CLUSTER_SIZE * 4 )) $CLUSTER_SIZE" \
|
|
| _filter_qemu_io
|
|
|
|
echo
|
|
echo "Rebase onto another image in the same chain"
|
|
echo
|
|
|
|
$QEMU_IMG rebase -b "$BASE_NEW" -F $IMGFMT "$OVERLAY"
|
|
|
|
echo "Verify that data is read the same before and after rebase"
|
|
echo
|
|
|
|
$QEMU_IO "$OVERLAY" -c "read -P 0x00 0 $CLUSTER_SIZE" \
|
|
-c "read -P 0x11 $CLUSTER_SIZE $CLUSTER_SIZE" \
|
|
-c "read -P 0x00 $(( CLUSTER_SIZE * 2 )) $(( CLUSTER_SIZE * 2 ))" \
|
|
-c "read -P 0x22 $(( CLUSTER_SIZE * 4 )) $CLUSTER_SIZE" \
|
|
-c "read -P 0x00 $(( CLUSTER_SIZE * 5 )) $CLUSTER_SIZE" \
|
|
| _filter_qemu_io
|
|
|
|
echo
|
|
echo "Verify that untouched cluster remains unallocated"
|
|
echo
|
|
|
|
$QEMU_IMG map "$OVERLAY" | _filter_qemu_img_map
|
|
|
|
echo
|
|
|
|
# success, all done
|
|
echo "*** done"
|
|
rm -f $seq.full
|
|
status=0
|