qemu-iotests: Test backing file COW with zero clusters

Signed-off-by: Kevin Wolf <kwolf@redhat.com>

3 files changed, 195 insertions, 0 deletions

diff --git a/tests/qemu-iotests/034 b/tests/qemu-iotests/034
new file mode 100755
index 0000000..8254df8
--- /dev/null
+++ b/tests/qemu-iotests/034
@@ -0,0 +1,113 @@
+#!/bin/bash
+#
+# Test bdrv_write_zeroes with backing files
+#
+# Copyright (C) 2012 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
+
+_supported_fmt qcow qcow2 vmdk qed
+_supported_proto generic
+_supported_os Linux
+
+CLUSTER_SIZE=4k
+size=128M
+
+echo
+echo "== creating backing file for COW tests =="
+
+_make_test_img $size
+$QEMU_IO -c "write -P 0x55 0 1M" $TEST_IMG | _filter_qemu_io
+mv $TEST_IMG $TEST_IMG.base
+
+_make_test_img -b $TEST_IMG.base 6G
+
+echo
+echo "== zero write with backing file =="
+$QEMU_IO -c "write -z 64k 192k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "write -z 513k 13k" $TEST_IMG | _filter_qemu_io
+
+_check_test_img
+
+echo
+echo "== verifying patterns (3) =="
+$QEMU_IO -c "read -P 0x55 0 64k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x0 64k 192k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x55 256k 257k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x0 513k 13k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x55 526k 498k" $TEST_IMG | _filter_qemu_io
+
+echo
+echo "== overwriting zero cluster =="
+$QEMU_IO -c "write -P 0xa 60k 8k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "write -P 0xb 64k 8k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "write -P 0xc 76k 4k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "write -P 0xd 252k 8k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "write -P 0xe 248k 8k" $TEST_IMG | _filter_qemu_io
+
+_check_test_img
+
+echo
+echo "== verifying patterns (4) =="
+$QEMU_IO -c "read -P 0x55 0 60k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0xa 60k 4k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0xb 64k 8k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x0 72k 4k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0xc 76k 4k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x0 80k 168k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0xe 248k 8k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0xd 256k 4k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x55 260k 64k" $TEST_IMG | _filter_qemu_io
+
+echo
+echo "== re-zeroing overwritten area =="
+$QEMU_IO -c "write -z 64k 192k" $TEST_IMG | _filter_qemu_io
+
+_check_test_img
+
+echo
+echo "== verifying patterns (5) =="
+$QEMU_IO -c "read -P 0x55 0 60k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0xa 60k 4k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x0 64k 192k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0xd 256k 4k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x55 260k 253k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x0 513k 13k" $TEST_IMG | _filter_qemu_io
+$QEMU_IO -c "read -P 0x55 526k 498k" $TEST_IMG | _filter_qemu_io
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/034.out b/tests/qemu-iotests/034.out
new file mode 100644
index 0000000..e82dae5
--- /dev/null
+++ b/tests/qemu-iotests/034.out
@@ -0,0 +1,81 @@
+QA output created by 034
+
+== creating backing file for COW tests ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+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=6442450944 backing_file='TEST_DIR/t.IMGFMT.base' 
+
+== zero write with backing file ==
+wrote 196608/196608 bytes at offset 65536
+192 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 13312/13312 bytes at offset 525312
+13 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+No errors were found on the image.
+
+== verifying patterns (3) ==
+read 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 196608/196608 bytes at offset 65536
+192 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 263168/263168 bytes at offset 262144
+257 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 13312/13312 bytes at offset 525312
+13 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 509952/509952 bytes at offset 538624
+498 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== overwriting zero cluster ==
+wrote 8192/8192 bytes at offset 61440
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 8192/8192 bytes at offset 65536
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 4096/4096 bytes at offset 77824
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 8192/8192 bytes at offset 258048
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 8192/8192 bytes at offset 253952
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+No errors were found on the image.
+
+== verifying patterns (4) ==
+read 61440/61440 bytes at offset 0
+60 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 61440
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 8192/8192 bytes at offset 65536
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 73728
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 77824
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 172032/172032 bytes at offset 81920
+168 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 8192/8192 bytes at offset 253952
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 262144
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 65536/65536 bytes at offset 266240
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== re-zeroing overwritten area ==
+wrote 196608/196608 bytes at offset 65536
+192 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+No errors were found on the image.
+
+== verifying patterns (5) ==
+read 61440/61440 bytes at offset 0
+60 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 61440
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 196608/196608 bytes at offset 65536
+192 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 4096/4096 bytes at offset 262144
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 259072/259072 bytes at offset 266240
+253 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 13312/13312 bytes at offset 525312
+13 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 509952/509952 bytes at offset 538624
+498 KiB, 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 af34482..5934829 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -40,3 +40,4 @@
 031 rw auto quick
 032 rw auto
 033 rw auto
+034 rw auto backing