1 files changed, 98 insertions, 0 deletions
diff --git a/tests/qemu-iotests/013 b/tests/qemu-iotests/013
new file mode 100755
index 00000000..ea3cab91
--- /dev/null
+++ b/tests/qemu-iotests/013
@@ -0,0 +1,98 @@
+#!/bin/bash
+#
+# qcow2 pattern test, empty and compressed image - 4k cluster patterns
+#
+# 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=kwolf@redhat.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
+. ./common.pattern
+
+# much of this could be generic for any format supporting compression.
+_supported_fmt qcow qcow2
+_supported_proto file
+_supported_os Linux
+
+TEST_OFFSETS="0 4294967296"
+TEST_OPS="writev read write readv"
+CLUSTER_SIZE=4096
+
+_make_test_img 6G
+
+echo "Testing empty image"
+echo
+
+for offset in $TEST_OFFSETS; do
+    echo "At offset $offset:"
+    for op in $TEST_OPS; do
+        io_test $op $offset $CLUSTER_SIZE 8
+    done
+    _check_test_img
+done
+
+
+echo "Compressing image"
+echo
+
+mv "$TEST_IMG" "$TEST_IMG.orig"
+$QEMU_IMG convert -f $IMGFMT -O $IMGFMT -c "$TEST_IMG.orig" "$TEST_IMG"
+
+echo "Testing compressed image"
+echo
+
+for offset in $TEST_OFFSETS; do
+    echo "With offset $offset:"
+    for op in read readv; do
+        io_test $op $offset $CLUSTER_SIZE 8
+    done
+    _check_test_img
+done
+
+echo "Testing compressed image with odd offsets"
+echo
+for offset in $TEST_OFFSETS; do
+    # Some odd offset (1 sector), so tests will write to areas occupied partly
+    # by old (compressed) data and empty clusters
+    offset=$((offset + 512))
+    echo "With offset $offset:"
+    for op in $TEST_OPS; do
+        io_test $op $offset $CLUSTER_SIZE 8
+    done
+    _check_test_img
+done
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0