[Qemu-devel] [PATCH 3/3] Backup Tool: Test for Incremental Backup

[Ishani Chugh <chugh.ishani@research.iiit.ac.in>]

This patch is the test for incremental backup implementation in Backup tool.
The test employs two basic subtests:
1) Backing up an empty guest and comparing it with base image.
2) Writing a pattern to the guest, creating backup, writing
   a pattern again, creating backup and comparing with base image.

Signed-off-by: Ishani Chugh <chugh.ishani@research.iiit.ac.in>
---
 tests/qemu-iotests/193     | 86 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/193.out | 34 ++++++++++++++++++
 tests/qemu-iotests/group   |  1 +
 3 files changed, 121 insertions(+)
 create mode 100755 tests/qemu-iotests/193
 create mode 100644 tests/qemu-iotests/193.out

diff --git a/tests/qemu-iotests/193 b/tests/qemu-iotests/193
new file mode 100755
index 0000000..500e5df
--- /dev/null
+++ b/tests/qemu-iotests/193
@@ -0,0 +1,86 @@
+#!/bin/bash
+#
+# Test Incremental backup functionality of qemu-backup tool
+#
+# Copyright (C) 2009 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=chugh.ishani@research.iiit.ac.in
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+status=1	# failure is the default!
+
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+. ./common.qemu
+
+_supported_fmt generic
+_supported_proto generic
+_supported_os Linux
+
+
+CONFIG_FILE=$TEST_DIR/backup-config
+SOCKET=unix:$TEST_DIR/backup_socket
+size=128M
+
+_make_test_img $size
+export QEMU_BACKUP_CONFIG=$CONFIG_FILE
+qemu_comm_method="monitor"
+echo
+_launch_qemu -drive if=virtio,file=$TEST_IMG -qmp $SOCKET,server,nowait
+$PYTHON ../../contrib/backup/qemu-backup.py guest add --guest adad --qmp $SOCKET
+$PYTHON ../../contrib/backup/qemu-backup.py drive add --id virtio0 --guest adad --target $TEST_DIR/virtio0
+echo
+echo "== Creating backup =="
+$PYTHON ../../contrib/backup/qemu-backup.py backup --inc --guest adad
+_send_qemu_cmd $QEMU_HANDLE 'quit' ''
+wait=1 _cleanup_qemu
+echo
+echo "== Comparing images =="
+$QEMU_IMG compare $TEST_DIR/virtio0_inc_0 $TEST_IMG
+
+rm $TEST_DIR/virtio0_inc_0
+
+_launch_qemu -drive if=virtio,id=virtio0,file=$TEST_IMG -qmp $SOCKET,server,nowait
+echo
+echo "== Writing Pattern =="
+_send_qemu_cmd $QEMU_HANDLE 'qemu-io virtio0 "write -P 0x22 0 1M"' "(qemu)" | _filter_qemu_io
+echo
+
+echo "== Creating backup =="
+$PYTHON ../../contrib/backup/qemu-backup.py backup --inc --guest adad
+
+echo "== Writing Pattern =="
+_send_qemu_cmd $QEMU_HANDLE 'qemu-io virtio0 "write -P 0x22 0 1M"' "(qemu)" | _filter_qemu_io
+echo
+$PYTHON ../../contrib/backup/qemu-backup.py backup --inc --guest adad
+_send_qemu_cmd $QEMU_HANDLE 'quit' ''
+wait=1 _cleanup_qemu
+echo
+echo "== Comparing images =="
+$QEMU_IMG compare $TEST_DIR/virtio0_inc_1 $TEST_IMG
+rm $TEST_DIR/virtio0_inc_0
+rm $TEST_DIR/virtio0_inc_1
+rm $CONFIG_FILE
+
+echo "*** done"
+status=0
\ No newline at end of file
diff --git a/tests/qemu-iotests/193.out b/tests/qemu-iotests/193.out
new file mode 100644
index 0000000..3a836c2
--- /dev/null
+++ b/tests/qemu-iotests/193.out
@@ -0,0 +1,34 @@
+QA output created by 193
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
+
+Successfully Added Guest
+Successfully Added Drive
+
+== Creating backup ==
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) Formatting 'TEST_DIR/virtio0_inc_0', fmt=qcow2 size=134217728 cluster_size=65536 lazy_refcounts=off refcount_bits=16
+quit
+
+== Comparing images ==
+Images are identical.
+
+== Writing Pattern ==
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qemu-io virtio0 "write -P 0x22 0 1M"
+
+== Creating backup ==
+Initial Backup does not exist
+== Writing Pattern ==
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) Formatting 'TEST_DIR/virtio0_inc_0', fmt=qcow2 size=134217728 cluster_size=65536 lazy_refcounts=off refcount_bits=16
+
+Formatting '/home/ishani/Desktop/opw/qemu/tests/qemu-iotests/scratch/virtio0_inc_1', fmt=qcow2 size=134217728 backing_file=/home/ishani/Desktop/opw/qemu/tests/qemu-iotests/scratch/virtio0_inc_0 backing_fmt=qcow2 encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16
+qemu-io virtio0 "write -P 0x22 0 1M"
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) quit
+
+== Comparing images ==
+Images are identical.
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 33c945b..6b9e034 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -189,3 +189,4 @@
 191 rw auto
 192 rw auto quick
 194 rw auto migration quick
+193 rw auto
-- 
2.7.4