[Qemu-devel] [RFC PATCH 14/16] qemu-iotests: Test COW with zero clusters

[Kevin Wolf]

Signed-off-by: Kevin Wolf <address@hidden>
---
 tests/qemu-iotests/031     |   66 ++++++++++++++++++++++++++++++++++-
 tests/qemu-iotests/031.out |   82 +++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 146 insertions(+), 2 deletions(-)

diff --git a/tests/qemu-iotests/031 b/tests/qemu-iotests/031
index 9aee078..6458e82 100755
--- a/tests/qemu-iotests/031
+++ b/tests/qemu-iotests/031
@@ -42,7 +42,7 @@ _supported_fmt generic
 _supported_proto generic
 _supported_os Linux
 
-
+CLUSTER_SIZE=4k
 size=128M
 _make_test_img $size
 
@@ -67,6 +67,70 @@ echo
 echo "== verifying patterns (2) =="
 $QEMU_IO -c "read -P 0x0 0x400 0x20000" $TEST_IMG | _filter_qemu_io
 
+_check_test_img
+
+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
diff --git a/tests/qemu-iotests/031.out b/tests/qemu-iotests/031.out
index 3c990dd..7a6e51a 100644
--- a/tests/qemu-iotests/031.out
+++ b/tests/qemu-iotests/031.out
@@ -1,5 +1,5 @@
 QA output created by 031
-Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 cluster_size=4096 
 
 == preparing image ==
 wrote 1024/1024 bytes at offset 512
@@ -26,4 +26,84 @@ wrote 65536/65536 bytes at offset 65536
 == 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)
+No errors were found on the image.
+
+== creating backing file for COW tests ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 cluster_size=4096 
+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' cluster_size=4096 
+
+== 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
-- 
1.7.6.5