block: qemu-iotests - test for live migration

This is an initial, simple live migration test from one
running VM to another, using monitor commands.

This is also an example of using the new common.qemu functions
for controlling multiple running qemu instances, for tests that
need a live qemu vm.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Jeff Cody 2014-04-30 10:55:10 -04:00 committed by Stefan Hajnoczi
parent e86e869770
commit fd040174ac
3 changed files with 134 additions and 0 deletions

105
tests/qemu-iotests/091 Executable file
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#!/bin/bash
#
# Live migration test
#
# Performs a migration from one VM to another via monitor commands
#
# Copyright (C) 2014 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=jcody@redhat.com
seq=`basename $0`
echo "QA output created by $seq"
here=`pwd`
status=1 # failure is the default!
MIG_FIFO="${TEST_DIR}/migrate"
_cleanup()
{
rm -f "${MIG_FIFO}"
_cleanup_qemu
_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
_supported_os Linux
size=1G
_make_test_img $size
mkfifo "${MIG_FIFO}"
echo
echo === Starting QEMU VM1 ===
echo
qemu_comm_method="monitor"
_launch_qemu -drive file="${TEST_IMG}",cache=none,id=disk
h1=$QEMU_HANDLE
echo
echo === Starting QEMU VM2 ===
echo
_launch_qemu -drive file="${TEST_IMG}",cache=none,id=disk \
-incoming "exec: cat '${MIG_FIFO}'"
h2=$QEMU_HANDLE
echo
echo === VM 1: Migrate from VM1 to VM2 ===
echo
silent=yes
_send_qemu_cmd $h1 'qemu-io disk "write -P 0x22 0 4M"' "(qemu)"
echo "vm1: qemu-io disk write complete"
_send_qemu_cmd $h1 "migrate \"exec: cat > '${MIG_FIFO}'\"" "(qemu)"
echo "vm1: live migration started"
qemu_cmd_repeat=20 _send_qemu_cmd $h1 "info migrate" "completed"
echo "vm1: live migration completed"
echo
echo === VM 2: Post-migration, write to disk, verify running ===
echo
_send_qemu_cmd $h2 'qemu-io disk "write 4M 1M"' "(qemu)"
echo "vm2: qemu-io disk write complete"
qemu_cmd_repeat=20 _send_qemu_cmd $h2 "info status" "running"
echo "vm2: qemu process running successfully"
echo "vm2: flush io, and quit"
_send_qemu_cmd $h2 'qemu-io disk flush' "(qemu)"
_send_qemu_cmd $h2 'quit' ""
echo "Check image pattern"
${QEMU_IO} -c "read -P 0x22 0 4M" "${TEST_IMG}" | _filter_testdir | _filter_qemu_io
echo "Running 'qemu-img check -r all \$TEST_IMG'"
"${QEMU_IMG}" check -r all "${TEST_IMG}" 2>&1 | _filter_testdir | _filter_qemu
echo "*** done"
rm -f $seq.full
status=0

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QA output created by 091
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
=== Starting QEMU VM1 ===
=== Starting QEMU VM2 ===
=== VM 1: Migrate from VM1 to VM2 ===
vm1: qemu-io disk write complete
vm1: live migration started
vm1: live migration completed
=== VM 2: Post-migration, write to disk, verify running ===
vm2: qemu-io disk write complete
vm2: qemu process running successfully
vm2: flush io, and quit
Check image pattern
read 4194304/4194304 bytes at offset 0
4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Running 'qemu-img check -r all $TEST_IMG'
No errors were found on the image.
80/16384 = 0.49% allocated, 0.00% fragmented, 0.00% compressed clusters
Image end offset: 5570560
*** done

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087 rw auto
088 rw auto
090 rw auto quick
091 rw auto