qemu-iotests: Test unaligned 4k zero write

Signed-off-by: NFam Zheng <famz@redhat.com>
Message-id: 1427160230-4489-3-git-send-email-famz@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

tests/qemu-iotests/033

@@ -46,26 +46,39 @@ _supported_os Linux
 size=128M
 _make_test_img $size
 
-echo
-echo "== preparing image =="
-$QEMU_IO -c "write -P 0xa 0x200 0x400" "$TEST_IMG" | _filter_qemu_io
-$QEMU_IO -c "write -P 0xa 0x20000 0x600" "$TEST_IMG" | _filter_qemu_io
-$QEMU_IO -c "write -z 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
+do_test()
+{
+	local align=$1
+	local iocmd=$2
+	local img=$3
+	{
+		echo "open -o driver=$IMGFMT,file.align=$align blkdebug::$img"
+		echo $iocmd
+	} | $QEMU_IO
+}
+
+for align in 512 4k; do
+	echo
+	echo "== preparing image =="
+	do_test $align "write -P 0xa 0x200 0x400" "$TEST_IMG" | _filter_qemu_io
+	do_test $align "write -P 0xa 0x20000 0x600" "$TEST_IMG" | _filter_qemu_io
+	do_test $align "write -z 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
 
-echo
-echo "== verifying patterns (1) =="
-$QEMU_IO -c "read -P 0xa 0x200 0x200" "$TEST_IMG" | _filter_qemu_io
-$QEMU_IO -c "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
-$QEMU_IO -c "read -P 0xa 0x20400 0x200" "$TEST_IMG" | _filter_qemu_io
+	echo
+	echo "== verifying patterns (1) =="
+	do_test $align "read -P 0xa 0x200 0x200" "$TEST_IMG" | _filter_qemu_io
+	do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
+	do_test $align "read -P 0xa 0x20400 0x200" "$TEST_IMG" | _filter_qemu_io
 
-echo
-echo "== rewriting zeroes =="
-$QEMU_IO -c "write -P 0xb 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io
-$QEMU_IO -c "write -z 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io
+	echo
+	echo "== rewriting zeroes =="
+	do_test $align "write -P 0xb 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io
+	do_test $align "write -z 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io
 
-echo
-echo "== verifying patterns (2) =="
-$QEMU_IO -c "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
+	echo
+	echo "== verifying patterns (2) =="
+	do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
+done
 
 # success, all done
 echo "*** done"

tests/qemu-iotests/033.out

@@ -23,6 +23,32 @@ wrote 65536/65536 bytes at offset 65536
 wrote 65536/65536 bytes at offset 65536
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 
+== verifying patterns (2) ==
+read 131072/131072 bytes at offset 1024
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== preparing image ==
+wrote 1024/1024 bytes at offset 512
+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 1536/1536 bytes at offset 131072
+1.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 131072/131072 bytes at offset 1024
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verifying patterns (1) ==
+read 512/512 bytes at offset 512
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 131072/131072 bytes at offset 1024
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 512/512 bytes at offset 132096
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== rewriting zeroes ==
+wrote 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
 == verifying patterns (2) ==
 read 131072/131072 bytes at offset 1024
 128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)