Re: [Qemu-devel] [PATCH v2 3/3] qemu-iotests: Add test for bz #1745922

[Maxim Levitsky <mlevitsk@redhat.com>]

On Mon, 2019-09-09 at 11:35 +0100, Daniel P. Berrangé wrote:
> On Fri, Sep 06, 2019 at 10:57:50PM +0300, Maxim Levitsky wrote:
> > Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
> > ---
> >  tests/qemu-iotests/263     | 75 ++++++++++++++++++++++++++++++++++++++
> >  tests/qemu-iotests/263.out | 19 ++++++++++
> >  tests/qemu-iotests/group   |  1 +
> >  3 files changed, 95 insertions(+)
> >  create mode 100755 tests/qemu-iotests/263
> >  create mode 100644 tests/qemu-iotests/263.out
> > 
> > diff --git a/tests/qemu-iotests/263 b/tests/qemu-iotests/263
> > new file mode 100755
> > index 0000000000..36951ff7b4
> > --- /dev/null
> > +++ b/tests/qemu-iotests/263
> > @@ -0,0 +1,75 @@
> > +#!/usr/bin/env bash
> > +#
> > +# Test encrypted write that crosses cluster boundary of two unallocated clusters
> > +# Based on 188
> > +#
> > +# Copyright (C) 2019 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=mlevitsk@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
> > +
> > +_supported_fmt qcow2
> > +_supported_proto generic
> > +_supported_os Linux
> > +
> > +
> > +size=1M
> > +
> > +SECRET="secret,id=sec0,data=astrochicken"
> > +
> > +_make_test_img --object $SECRET -o "encrypt.format=luks,encrypt.key-secret=sec0,encrypt.iter-time=10,cluster_size=64K" $size
> > +
> > +IMGSPEC="driver=$IMGFMT,encrypt.key-secret=sec0,file.filename=$TEST_IMG"
> > +
> > +QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
> > +
> > +echo
> > +echo "== reading the whole image =="
> > +$QEMU_IO --object $SECRET -c "read -P 0 0 $size" --image-opts $IMGSPEC | _filter_qemu_io | _filter_testdir
> > +
> > +echo
> > +echo "== write two 512 byte sectors on a cluster boundary =="
> > +$QEMU_IO --object $SECRET -c "write -P 0xAA 0xFE00 0x400" --image-opts $IMGSPEC | _filter_qemu_io | _filter_testdir
> > +
> > +echo
> > +echo "== verify that the rest of the image is not changed =="
> > +$QEMU_IO --object $SECRET -c "read -P 0x00 0x00000 0xFE00" --image-opts $IMGSPEC | _filter_qemu_io | _filter_testdir
> > +$QEMU_IO --object $SECRET -c "read -P 0xAA 0x0FE00 0x400" --image-opts $IMGSPEC | _filter_qemu_io | _filter_testdir
> > +$QEMU_IO --object $SECRET -c "read -P 0x00 0x10200 0xEFE00" --image-opts $IMGSPEC | _filter_qemu_io | _filter_testdir
> 
> This tests LUKS encryption, but the code you'r changing/fixing also used
> for the traditionl qcow2 encryption. The difference in IV handling for
> these two methods is what made this code confusing, so I'd like to see
> that the test also covers traditional qcow2 encryption.
This is very good idea. Done.

> 
> Also can you confirm that the test succeeds when run on a qemu
> built against 8c1ecb590497b0349c550607db923972b37f6963  (the change
> immediately before Vladimir's threading series) ?
Yes, the test fails with this commit. It also fails on master and works
with my fix (both encryption case).

> 
> 
> Regards,
> Daniel


Best regards,
	Maxim Levitsky