LXR qemu/tests/qemu-iotests/267

   1#!/usr/bin/env bash
   2# group: rw auto quick snapshot
   3#
   4# Test which nodes are involved in internal snapshots
   5#
   6# Copyright (C) 2019 Red Hat, Inc.
   7#
   8# This program is free software; you can redistribute it and/or modify
   9# it under the terms of the GNU General Public License as published by
  10# the Free Software Foundation; either version 2 of the License, or
  11# (at your option) any later version.
  12#
  13# This program is distributed in the hope that it will be useful,
  14# but WITHOUT ANY WARRANTY; without even the implied warranty of
  15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16# GNU General Public License for more details.
  17#
  18# You should have received a copy of the GNU General Public License
  19# along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20#
  21
  22# creator
  23owner=kwolf@redhat.com
  24
  25seq=`basename $0`
  26echo "QA output created by $seq"
  27
  28status=1        # failure is the default!
  29
  30_cleanup()
  31{
  32    _cleanup_test_img
  33    rm -f "$SOCK_DIR/nbd"
  34}
  35trap "_cleanup; exit \$status" 0 1 2 3 15
  36
  37# get standard environment, filters and checks
  38. ./common.rc
  39. ./common.filter
  40
  41_supported_fmt qcow2
  42_supported_proto file
  43_supported_os Linux
  44_require_drivers copy-on-read
  45
  46# Internal snapshots are (currently) impossible with refcount_bits=1,
  47# and generally impossible with external data files
  48_unsupported_imgopts 'refcount_bits=1[^0-9]' data_file
  49
  50_require_devices virtio-blk
  51
  52do_run_qemu()
  53{
  54    echo Testing: "$@"
  55    (
  56        if ! test -t 0; then
  57            while read cmd; do
  58                echo $cmd
  59            done
  60        fi
  61        echo quit
  62    ) | $QEMU -nographic -monitor stdio -nodefaults "$@"
  63    echo
  64}
  65
  66run_qemu()
  67{
  68    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_hmp |
  69        _filter_generated_node_ids | _filter_imgfmt | _filter_vmstate_size
  70}
  71
  72size=128M
  73
  74run_test()
  75{
  76    if [ -n "$BACKING_FILE" ]; then
  77        _make_test_img -b "$BACKING_FILE" -F $IMGFMT $size
  78    else
  79        _make_test_img $size
  80    fi
  81    printf "savevm snap0\ninfo snapshots\nloadvm snap0\n" | run_qemu "$@" | _filter_date
  82}
  83
  84
  85echo
  86echo "=== No block devices at all ==="
  87echo
  88
  89run_test
  90
  91echo
  92echo "=== -drive if=none ==="
  93echo
  94
  95run_test -drive driver=file,file="$TEST_IMG",if=none
  96run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=none
  97run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=none -device virtio-blk,drive=none0
  98
  99echo
 100echo "=== -drive if=virtio ==="
 101echo
 102
 103run_test -drive driver=file,file="$TEST_IMG",if=virtio
 104run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=virtio
 105
 106echo
 107echo "=== Simple -blockdev ==="
 108echo
 109
 110run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file
 111run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
 112         -blockdev driver=$IMGFMT,file=file,node-name=fmt
 113run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
 114         -blockdev driver=raw,file=file,node-name=raw \
 115         -blockdev driver=$IMGFMT,file=raw,node-name=fmt
 116
 117echo
 118echo "=== -blockdev with a filter on top ==="
 119echo
 120
 121run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
 122         -blockdev driver=$IMGFMT,file=file,node-name=fmt \
 123         -blockdev driver=copy-on-read,file=fmt,node-name=filter
 124
 125echo
 126echo "=== -blockdev with a backing file ==="
 127echo
 128
 129TEST_IMG="$TEST_IMG.base" _make_test_img $size
 130
 131BACKING_FILE="$TEST_IMG.base" \
 132run_test -blockdev driver=file,filename="$TEST_IMG.base",node-name=backing-file \
 133         -blockdev driver=file,filename="$TEST_IMG",node-name=file \
 134         -blockdev driver=$IMGFMT,file=file,backing=backing-file,node-name=fmt
 135
 136BACKING_FILE="$TEST_IMG.base" \
 137run_test -blockdev driver=file,filename="$TEST_IMG.base",node-name=backing-file \
 138         -blockdev driver=$IMGFMT,file=backing-file,node-name=backing-fmt \
 139         -blockdev driver=file,filename="$TEST_IMG",node-name=file \
 140         -blockdev driver=$IMGFMT,file=file,backing=backing-fmt,node-name=fmt
 141
 142# A snapshot should be present on the overlay, but not the backing file
 143echo Internal snapshots on overlay:
 144$QEMU_IMG snapshot -l "$TEST_IMG" | _filter_date | _filter_vmstate_size
 145
 146echo Internal snapshots on backing file:
 147$QEMU_IMG snapshot -l "$TEST_IMG.base" | _filter_date | _filter_vmstate_size
 148
 149echo
 150echo "=== -blockdev with NBD server on the backing file ==="
 151echo
 152
 153_make_test_img -b "$TEST_IMG.base" -F $IMGFMT $size
 154cat <<EOF |
 155nbd_server_start unix:$SOCK_DIR/nbd
 156nbd_server_add -w backing-fmt
 157savevm snap0
 158info snapshots
 159loadvm snap0
 160EOF
 161run_qemu -blockdev driver=file,filename="$TEST_IMG.base",node-name=backing-file \
 162         -blockdev driver=$IMGFMT,file=backing-file,node-name=backing-fmt \
 163         -blockdev driver=file,filename="$TEST_IMG",node-name=file \
 164         -blockdev driver=$IMGFMT,file=file,backing=backing-fmt,node-name=fmt |
 165         _filter_date
 166
 167# This time, a snapshot should be created on both files
 168echo Internal snapshots on overlay:
 169$QEMU_IMG snapshot -l "$TEST_IMG" | _filter_date | _filter_vmstate_size
 170
 171echo Internal snapshots on backing file:
 172$QEMU_IMG snapshot -l "$TEST_IMG.base" | _filter_date | _filter_vmstate_size
 173
 174# success, all done
 175echo "*** done"
 176rm -f $seq.full
 177status=0
 178