1 files changed, 136 insertions, 0 deletions
diff --git a/tests/qemu-iotests/039 b/tests/qemu-iotests/039
new file mode 100755
index 0000000000..a749fcf23b
--- /dev/null
+++ b/tests/qemu-iotests/039
@@ -0,0 +1,136 @@
+#!/bin/bash
+#
+# Test qcow2 lazy refcounts
+#
+# Copyright (C) 2012 Red Hat, Inc.
+# Copyright IBM, Corp. 2010
+#
+# Based on test 038.
+#
+# 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=stefanha@linux.vnet.ibm.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+
+_cleanup()
+{
+	_cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt qcow2
+_supported_proto generic
+_supported_os Linux
+
+size=128M
+
+echo
+echo "== Checking that image is clean on shutdown =="
+
+IMGOPTS="compat=1.1,lazy_refcounts=on"
+_make_test_img $size
+
+$QEMU_IO -c "write -P 0x5a 0 512" $TEST_IMG | _filter_qemu_io
+
+# The dirty bit must not be set
+./qcow2.py $TEST_IMG dump-header | grep incompatible_features
+_check_test_img
+
+echo
+echo "== Creating a dirty image file =="
+
+IMGOPTS="compat=1.1,lazy_refcounts=on"
+_make_test_img $size
+
+old_ulimit=$(ulimit -c)
+ulimit -c 0 # do not produce a core dump on abort(3)
+$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" $TEST_IMG | _filter_qemu_io
+ulimit -c "$old_ulimit"
+
+# The dirty bit must be set
+./qcow2.py $TEST_IMG dump-header | grep incompatible_features
+_check_test_img
+
+echo
+echo "== Read-only access must still work =="
+
+$QEMU_IO -r -c "read -P 0x5a 0 512" $TEST_IMG | _filter_qemu_io
+
+# The dirty bit must be set
+./qcow2.py $TEST_IMG dump-header | grep incompatible_features
+
+echo
+echo "== Repairing the image file must succeed =="
+
+$QEMU_IMG check -r all $TEST_IMG
+
+# The dirty bit must not be set
+./qcow2.py $TEST_IMG dump-header | grep incompatible_features
+
+echo
+echo "== Data should still be accessible after repair =="
+
+$QEMU_IO -c "read -P 0x5a 0 512" $TEST_IMG | _filter_qemu_io
+
+echo
+echo "== Opening a dirty image read/write should repair it =="
+
+IMGOPTS="compat=1.1,lazy_refcounts=on"
+_make_test_img $size
+
+old_ulimit=$(ulimit -c)
+ulimit -c 0 # do not produce a core dump on abort(3)
+$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" $TEST_IMG | _filter_qemu_io
+ulimit -c "$old_ulimit"
+
+# The dirty bit must be set
+./qcow2.py $TEST_IMG dump-header | grep incompatible_features
+
+$QEMU_IO -c "write 0 512" $TEST_IMG | _filter_qemu_io
+
+# The dirty bit must not be set
+./qcow2.py $TEST_IMG dump-header | grep incompatible_features
+
+echo
+echo "== Creating an image file with lazy_refcounts=off =="
+
+IMGOPTS="compat=1.1,lazy_refcounts=off"
+_make_test_img $size
+
+old_ulimit=$(ulimit -c)
+ulimit -c 0 # do not produce a core dump on abort(3)
+$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" $TEST_IMG | _filter_qemu_io
+ulimit -c "$old_ulimit"
+
+# The dirty bit must not be set since lazy_refcounts=off
+./qcow2.py $TEST_IMG dump-header | grep incompatible_features
+_check_test_img
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
+