qemu/tests/qemu-iotests/286

#!/usr/bin/env bash
#
# Test qemu-img snapshot -l
#
# 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/>.
#

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
. ./common.qemu

_supported_fmt qcow2
_supported_proto file fuse
# Internal snapshots are (currently) impossible with refcount_bits=1,
# and generally impossible with external data files
_unsupported_imgopts 'refcount_bits=1[^0-9]' data_file

_make_test_img 64M

# Should be so long as to take up the whole field width
sn_name=abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz

# More memory will give us a larger VM state, i.e. one above 1 MB.
# This way, we get a number with a decimal point.
qemu_comm_method=monitor _launch_qemu -m 512 "$TEST_IMG"

_send_qemu_cmd $QEMU_HANDLE "savevm $sn_name" '(qemu)'
_send_qemu_cmd $QEMU_HANDLE 'quit' '(qemu)'
wait=yes _cleanup_qemu

# Check that all fields are separated by spaces.
# We first collapse all space sequences into one space each;
# then we turn every space-separated field into a '.';
# and finally, we name the '.'s so the output is not just a confusing
# sequence of dots.

echo 'Output structure:'
$QEMU_IMG snapshot -l "$TEST_IMG" | tail -n 1 | tr -s ' ' \
    | sed -e 's/\S\+/./g' \
    | sed -e 's/\./(snapshot ID)/' \
          -e 's/\./(snapshot name)/' \
          -e 's/\./(VM state size value)/' \
          -e 's/\./(VM state size unit)/' \
          -e 's/\./(snapshot date)/' \
          -e 's/\./(snapshot time)/' \
          -e 's/\./(VM clock)/'

# success, all done
echo "*** done"
rm -f $seq.full
status=0