[Libguestfs] [PATCH libnbd] copy: Test --request-size option

[Nir Soffer]

On Mon, Mar 1, 2021 at 6:38 PM Richard W.M. Jones <rjones at redhat.com> wrote:
>
> On Mon, Mar 01, 2021 at 06:35:04PM +0200, Nir Soffer wrote:
> > Add simple test similar to copy-sparse-no-extents testing that
> > --request-size is respected.
> >
> > Signed-off-by: Nir Soffer <nsoffer at redhat.com>
> > ---
> >  copy/Makefile.am                 |  2 +
> >  copy/copy-sparse-request-size.sh | 92 ++++++++++++++++++++++++++++++++
> >  2 files changed, 94 insertions(+)
> >  create mode 100755 copy/copy-sparse-request-size.sh
> >
> > diff --git a/copy/Makefile.am b/copy/Makefile.am
> > index c8b28ac..d85ceff 100644
> > --- a/copy/Makefile.am
> > +++ b/copy/Makefile.am
> > @@ -36,6 +36,7 @@ EXTRA_DIST = \
> >       copy-sparse.sh \
> >       copy-sparse-allocated.sh \
> >       copy-sparse-no-extents.sh \
> > +     copy-sparse-request-size.sh \
> >       copy-sparse-to-stream.sh \
> >       copy-stdin-to-nbd.sh \
> >       copy-stdin-to-null.sh \
> > @@ -122,6 +123,7 @@ TESTS += \
> >       copy-sparse.sh \
> >       copy-sparse-allocated.sh \
> >       copy-sparse-no-extents.sh \
> > +     copy-sparse-request-size.sh \
> >       copy-sparse-to-stream.sh \
> >       $(ROOT_TESTS) \
> >       test-long-options.sh \
> > diff --git a/copy/copy-sparse-request-size.sh b/copy/copy-sparse-request-size.sh
> > new file mode 100755
> > index 0000000..b539f5e
> > --- /dev/null
> > +++ b/copy/copy-sparse-request-size.sh
> > @@ -0,0 +1,92 @@
> > +#!/usr/bin/env bash
> > +# nbd client library in userspace
> > +# Copyright (C) 2021 Red Hat Inc.
> > +#
> > +# This library is free software; you can redistribute it and/or
> > +# modify it under the terms of the GNU Lesser General Public
> > +# License as published by the Free Software Foundation; either
> > +# version 2 of the License, or (at your option) any later version.
> > +#
> > +# This library is distributed in the hope that it will be useful,
> > +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> > +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> > +# Lesser General Public License for more details.
> > +#
> > +# You should have received a copy of the GNU Lesser General Public
> > +# License along with this library; if not, write to the Free Software
> > +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
> > +
> > +# Adapted from copy-sparse-no-extents.sh
> > +#
> > +# This test depends on the nbdkit default sparse block size (32K).
> > +
> > +. ../tests/functions.sh
> > +
> > +set -e
> > +set -x
> > +
> > +# Skip this test under valgrind, it takes too long.
> > +if [ "x$LIBNBD_VALGRIND" = "x1" ]; then
> > +    echo "$0: test skipped under valgrind"
> > +    exit 77
> > +fi
> > +
> > +requires nbdkit --version
> > +requires nbdkit --exit-with-parent --version
> > +requires nbdkit data --version
> > +requires nbdkit eval --version
> > +
> > +out=copy-sparse-request-size.out
>
> Copy and paste problem - unless temporary files have a unique name
> they will conflict when we run the tests in parallel (which we do
> normally).

Isn't "copy-sparse-request-size.out" unique?

>
> Rich.
>
> > +cleanup_fn rm -f $out
> > +
> > +$VG nbdcopy --no-extents -S 0 --request-size=1048576 -- \
> > +    [ nbdkit --exit-with-parent data data='
> > +             1
> > +             @33554431 1
> > +             ' ] \
> > +    [ nbdkit --exit-with-parent eval \
> > +             get_size=' echo 33554432 ' \
> > +             pwrite=" echo \$@ >> $out " \
> > +             trim=" echo \$@ >> $out " \
> > +             zero=" echo \$@ >> $out " ]
> > +
> > +sort -n -o $out $out
> > +
> > +echo Output:
> > +cat $out
> > +
> > +if [ "$(cat $out)" != "pwrite 1048576 0
> > +pwrite 1048576 1048576
> > +pwrite 1048576 10485760
> > +pwrite 1048576 11534336
> > +pwrite 1048576 12582912
> > +pwrite 1048576 13631488
> > +pwrite 1048576 14680064
> > +pwrite 1048576 15728640
> > +pwrite 1048576 16777216
> > +pwrite 1048576 17825792
> > +pwrite 1048576 18874368
> > +pwrite 1048576 19922944
> > +pwrite 1048576 2097152
> > +pwrite 1048576 20971520
> > +pwrite 1048576 22020096
> > +pwrite 1048576 23068672
> > +pwrite 1048576 24117248
> > +pwrite 1048576 25165824
> > +pwrite 1048576 26214400
> > +pwrite 1048576 27262976
> > +pwrite 1048576 28311552
> > +pwrite 1048576 29360128
> > +pwrite 1048576 30408704
> > +pwrite 1048576 3145728
> > +pwrite 1048576 31457280
> > +pwrite 1048576 32505856
> > +pwrite 1048576 4194304
> > +pwrite 1048576 5242880
> > +pwrite 1048576 6291456
> > +pwrite 1048576 7340032
> > +pwrite 1048576 8388608
> > +pwrite 1048576 9437184" ]; then
> > +    echo "$0: output does not match expected"
> > +    exit 1
> > +fi
> > --
> > 2.26.2
>
> --
> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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>