qemu-e2k/tests/qemu-iotests/181
Daniel P. Berrangé cbde7be900 migrate: remove QMP/HMP commands for speed, downtime and cache size
The generic 'migrate_set_parameters' command handle all types of param.

Only the QMP commands were documented in the deprecations page, but the
rationale for deprecating applies equally to HMP, and the replacements
exist. Furthermore the HMP commands are just shims to the QMP commands,
so removing the latter breaks the former unless they get re-implemented.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-03-18 09:22:55 +00:00

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#!/usr/bin/env bash
# group: rw auto migration quick
#
# Test postcopy live migration with shared storage
#
# Copyright (C) 2017 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=kwolf@redhat.com
seq=`basename $0`
echo "QA output created by $seq"
status=1 # failure is the default!
MIG_SOCKET="${SOCK_DIR}/migrate"
_cleanup()
{
rm -f "${MIG_SOCKET}"
_cleanup_test_img
_cleanup_qemu
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.qemu
_supported_fmt generic
# Formats that do not support live migration
_unsupported_fmt qcow vdi vhdx vmdk vpc vvfat parallels
_supported_proto generic
_supported_os Linux
size=64M
_make_test_img $size
echo
echo === Starting VMs ===
echo
qemu_comm_method="monitor"
if [ "$IMGOPTSSYNTAX" = "true" ]; then
_launch_qemu \
-drive "${TEST_IMG}",cache=${CACHEMODE},aio=$AIOMODE,id=disk
else
_launch_qemu \
-drive file="${TEST_IMG}",cache=${CACHEMODE},aio=$AIOMODE,driver=$IMGFMT,id=disk
fi
src=$QEMU_HANDLE
if [ "$IMGOPTSSYNTAX" = "true" ]; then
_launch_qemu \
-drive "${TEST_IMG}",cache=${CACHEMODE},aio=$AIOMODE,id=disk \
-incoming "unix:${MIG_SOCKET}"
else
_launch_qemu \
-drive file="${TEST_IMG}",cache=${CACHEMODE},aio=$AIOMODE,driver=$IMGFMT,id=disk \
-incoming "unix:${MIG_SOCKET}"
fi
dest=$QEMU_HANDLE
echo
echo === Write something on the source ===
echo
silent=
_send_qemu_cmd $src 'qemu-io disk "write -P 0x55 0 64k"' "(qemu)"
_send_qemu_cmd $src "" "ops/sec"
_send_qemu_cmd $src 'qemu-io disk "read -P 0x55 0 64k"' "(qemu)"
_send_qemu_cmd $src "" "ops/sec"
echo
echo === Do postcopy migration to destination ===
echo
# Slow down migration so much that it definitely won't finish before we can
# switch to postcopy
# Enable postcopy-ram capability both on source and destination
silent=yes
_send_qemu_cmd $dest 'migrate_set_capability postcopy-ram on' "(qemu)"
qemu_error_no_exit=yes success_or_failure=yes \
_send_qemu_cmd $dest '' "(qemu)" "Postcopy is not supported"
if [ ${QEMU_STATUS[$dest]} -lt 0 ]; then
_send_qemu_cmd $dest '' "(qemu)"
_send_qemu_cmd $src 'quit' ""
_send_qemu_cmd $dest 'quit' ""
wait=1 _cleanup_qemu
_notrun 'Postcopy is not supported'
fi
_send_qemu_cmd $src 'migrate_set_parameter max_bandwidth 4k' "(qemu)"
_send_qemu_cmd $src 'migrate_set_capability postcopy-ram on' "(qemu)"
_send_qemu_cmd $src "migrate -d unix:${MIG_SOCKET}" "(qemu)"
_send_qemu_cmd $src 'migrate_start_postcopy' "(qemu)"
QEMU_COMM_TIMEOUT=1 qemu_cmd_repeat=10 silent=yes \
_send_qemu_cmd $src "info migrate" "completed\|failed"
silent=yes _send_qemu_cmd $src "" "(qemu)"
echo
echo === Do some I/O on the destination ===
echo
# It is important that we use the BlockBackend of the guest device here instead
# of the node name, which would create a new BlockBackend and not test whether
# the guest has the necessary permissions to access the image now
silent=
_send_qemu_cmd $dest 'qemu-io disk "read -P 0x55 0 64k"' "(qemu)"
_send_qemu_cmd $dest "" "ops/sec"
_send_qemu_cmd $dest 'qemu-io disk "write -P 0x66 1M 64k"' "(qemu)"
_send_qemu_cmd $dest "" "ops/sec"
echo
echo === Shut down and check image ===
echo
_send_qemu_cmd $src 'quit' ""
_send_qemu_cmd $dest 'quit' ""
wait=1 _cleanup_qemu
_check_test_img
# success, all done
echo "*** done"
rm -f $seq.full
status=0