qemu-iotests: Test postcopy migration

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

tests/qemu-iotests/181

@@ -0,0 +1,119 @@
+#!/bin/bash
+#
+# 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 $seq"
+
+here=`pwd`
+status=1	# failure is the default!
+
+MIG_SOCKET="${TEST_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
+_supported_proto generic
+_supported_os Linux
+
+size=64M
+_make_test_img $size
+
+echo
+echo === Starting VMs ===
+echo
+
+qemu_comm_method="monitor"
+
+_launch_qemu \
+    -drive file="${TEST_IMG}",cache=${CACHEMODE},driver=$IMGFMT,id=disk
+src=$QEMU_HANDLE
+
+_launch_qemu \
+    -drive file="${TEST_IMG}",cache=${CACHEMODE},driver=$IMGFMT,id=disk \
+    -incoming "unix:${MIG_SOCKET}"
+dest=$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
+silent=yes
+_send_qemu_cmd $src 'migrate_set_speed 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

tests/qemu-iotests/181.out

@@ -0,0 +1,38 @@
+QA output created by 181
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+
+=== Starting VMs ===
+
+
+=== Write something on the source ===
+
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qemu-io disk "write -P 0x55 0 64k"
+wrote 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) 
+(qemu) qemu-io disk "read -P 0x55 0 64k"
+read 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+=== Do postcopy migration to destination ===
+
+
+=== Do some I/O on the destination ===
+
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qemu-io disk "read -P 0x55 0 64k"
+read 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) 
+(qemu) qemu-io disk "write -P 0x66 1M 64k"
+wrote 65536/65536 bytes at offset 1048576
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+=== Shut down and check image ===
+
+(qemu) quit
+(qemu) 
+(qemu) quit
+No errors were found on the image.
+*** done

tests/qemu-iotests/group

@@ -169,3 +169,4 @@
 174 auto
 175 auto quick
 176 rw auto backing
+181 rw auto migration