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[Qemu-devel] [PATCH 26/28] qemu-iotests: add tests for rebasing zero clu
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PATCH 26/28] qemu-iotests: add tests for rebasing zero clusters |
Date: |
Fri, 15 Mar 2013 16:14:23 +0100 |
From: Paolo Bonzini <address@hidden>
If zero clusters are erroneously treated as unallocated, "qemu-img rebase"
will copy the backing file's contents onto the cluster.
The bug existed also in image streaming, but since the root cause was in
qcow2's is_allocated implementation it is enough to test it with qemu-img.
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
tests/qemu-iotests/050 | 75 ++++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/050.out | 17 +++++++++++
tests/qemu-iotests/group | 1 +
3 files changed, 93 insertions(+)
create mode 100755 tests/qemu-iotests/050
create mode 100644 tests/qemu-iotests/050.out
diff --git a/tests/qemu-iotests/050 b/tests/qemu-iotests/050
new file mode 100755
index 0000000..05793e2
--- /dev/null
+++ b/tests/qemu-iotests/050
@@ -0,0 +1,75 @@
+#!/bin/bash
+#
+# Test qemu-img rebase with zero clusters
+#
+# 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
address@hidden
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+
+_cleanup()
+{
+ _cleanup_test_img
+ rm -f $TEST_IMG.old
+ rm -f $TEST_IMG.new
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt qcow2 qed
+_supported_proto file
+_supported_os Linux
+
+if test "$IMGFMT" = qcow2 && test $IMGOPTS = ""; then
+ IMGOPTS=compat=1.1
+fi
+
+echo
+echo "== Creating images =="
+
+size=10M
+_make_test_img $size
+$QEMU_IO -c "write -P 0x40 0 1048576" $TEST_IMG | _filter_qemu_io
+mv $TEST_IMG $TEST_IMG.old
+
+_make_test_img $size
+$QEMU_IO -c "write -P 0x5a 0 1048576" $TEST_IMG | _filter_qemu_io
+mv $TEST_IMG $TEST_IMG.new
+
+_make_test_img -b $TEST_IMG.old $size
+$QEMU_IO -c "write -z 0 1048576" $TEST_IMG | _filter_qemu_io
+
+echo
+echo "== Rebasing the image =="
+
+$QEMU_IMG rebase -b $TEST_IMG.new $TEST_IMG
+$QEMU_IO -c "read -P 0x00 0 1048576" $TEST_IMG | _filter_qemu_io
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/050.out b/tests/qemu-iotests/050.out
new file mode 100644
index 0000000..3f5f7e1
--- /dev/null
+++ b/tests/qemu-iotests/050.out
@@ -0,0 +1,17 @@
+QA output created by 050
+
+== Creating images ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=10485760
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=10485760
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=10485760
backing_file='TEST_DIR/t.IMGFMT.old'
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== Rebasing the image ==
+read 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index fcf57e0..1d7e4f3 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -56,3 +56,4 @@
047 rw auto
048 img auto quick
049 rw auto
+050 rw auto backing quick
--
1.8.1.4
- [Qemu-devel] [PATCH 15/28] qcow2: make is_allocated return true for zero clusters, (continued)
- [Qemu-devel] [PATCH 15/28] qcow2: make is_allocated return true for zero clusters, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 16/28] sheepdog: use non-blocking fd in coroutine context, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 17/28] sheepdog: set io_flush handler in do_co_req, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 19/28] threadpool: move globals into struct ThreadPool, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 20/28] threadpool: add thread_pool_new() and thread_pool_free(), Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 22/28] block: add bdrv_get_aio_context(), Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 18/28] main-loop: add qemu_get_aio_context(), Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 21/28] aio: add a ThreadPool instance to AioContext, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 24/28] coroutine: use AioContext for CoQueue BH, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 25/28] dataplane: fix hang introduced by AioContext transition, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 26/28] qemu-iotests: add tests for rebasing zero clusters,
Stefan Hajnoczi <=
- [Qemu-devel] [PATCH 28/28] blockdev: Fix up copyright and permission notice, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 27/28] qemu-iotests: use -nographic in test case 007, Stefan Hajnoczi, 2013/03/15
- [Qemu-devel] [PATCH 23/28] threadpool: drop global thread pool, Stefan Hajnoczi, 2013/03/15
- Re: [Qemu-devel] [PULL 00/28] Block patches, Anthony Liguori, 2013/03/15