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authorMax Reitz <mreitz@redhat.com>2013-10-09 12:07:33 +0200
committerKevin Wolf <kwolf@redhat.com>2013-10-11 16:49:59 +0200
commit975a93c082452db9aa1397a797ca8f13ba367393 (patch)
tree7053f2b8114a074beb1cfcca1e893f0856b88eeb /tests/qemu-iotests/066
parentf6186f49e2c98d91f22027d8c62996df4fcf3f92 (diff)
qemu-iotests: Discard preallocated zero clusters
Add a new test case for discarding preallocated zero clusters; doing this should not result in any leaks. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'tests/qemu-iotests/066')
-rwxr-xr-xtests/qemu-iotests/06663
1 files changed, 63 insertions, 0 deletions
diff --git a/tests/qemu-iotests/066 b/tests/qemu-iotests/066
new file mode 100755
index 0000000000..1c2452b0c5
--- /dev/null
+++ b/tests/qemu-iotests/066
@@ -0,0 +1,63 @@
+#!/bin/bash
+#
+# Test case for discarding preallocated zero clusters in qcow2
+#
+# Copyright (C) 2013 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=mreitz@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
+
+# This tests qocw2-specific low-level functionality
+_supported_fmt qcow2
+_supported_proto generic
+_supported_os Linux
+
+IMGOPTS="compat=1.1"
+IMG_SIZE=64M
+
+echo
+echo "=== Testing snapshotting an image with zero clusters ==="
+echo
+_make_test_img $IMG_SIZE
+# Write some normal clusters, zero them (creating preallocated zero clusters)
+# and discard those
+$QEMU_IO -c "write 0 256k" -c "write -z 0 256k" -c "discard 0 256k" "$TEST_IMG" \
+ | _filter_qemu_io
+# Check the image (there shouldn't be any leaks)
+_check_test_img
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0