diff options
| -rwxr-xr-x | tests/qemu-iotests/024 | 60 | ||||
| -rw-r--r-- | tests/qemu-iotests/024.out | 43 | ||||
| -rwxr-xr-x | tests/qemu-iotests/271 | 66 | ||||
| -rw-r--r-- | tests/qemu-iotests/271.out | 42 |
4 files changed, 211 insertions, 0 deletions
diff --git a/tests/qemu-iotests/024 b/tests/qemu-iotests/024 index 98a7c8f..285f17e 100755 --- a/tests/qemu-iotests/024 +++ b/tests/qemu-iotests/024 @@ -257,6 +257,66 @@ $QEMU_IO "$OVERLAY" -c "read -P 0x00 $(( CLUSTER_SIZE * 4 )) $CLUSTER_SIZE" \ echo +# Check that rebase within the chain is working when +# overlay cluster size > backings cluster size +# (here overlay cluster size == 2 * backings cluster size) +# +# base_new <-- base_old <-- overlay +# +# Backing (new): -- -- -- -- -- -- +# Backing (old): -- 11 -- -- 22 -- +# Overlay: |-- --|-- --|-- --| +# +# We should end up having 1st and 3rd cluster allocated, and their halves +# being read as zeroes. + +echo +echo "=== Test rebase with different cluster sizes ===" +echo + +echo "Creating backing chain" +echo + +TEST_IMG=$BASE_NEW _make_test_img $(( CLUSTER_SIZE * 6 )) +TEST_IMG=$BASE_OLD _make_test_img -b "$BASE_NEW" -F $IMGFMT \ + $(( CLUSTER_SIZE * 6 )) +CLUSTER_SIZE=$(( CLUSTER_SIZE * 2 )) TEST_IMG=$OVERLAY \ + _make_test_img -b "$BASE_OLD" -F $IMGFMT $(( CLUSTER_SIZE * 6 )) + +TEST_IMG=$OVERLAY _img_info + +echo +echo "Fill backing files with data" +echo + +$QEMU_IO "$BASE_OLD" -c "write -P 0x11 $CLUSTER_SIZE $CLUSTER_SIZE" \ + -c "write -P 0x22 $(( CLUSTER_SIZE * 4 )) $CLUSTER_SIZE" \ + | _filter_qemu_io + +echo +echo "Rebase onto another image in the same chain" +echo + +$QEMU_IMG rebase -b "$BASE_NEW" -F $IMGFMT "$OVERLAY" + +echo "Verify that data is read the same before and after rebase" +echo + +$QEMU_IO "$OVERLAY" -c "read -P 0x00 0 $CLUSTER_SIZE" \ + -c "read -P 0x11 $CLUSTER_SIZE $CLUSTER_SIZE" \ + -c "read -P 0x00 $(( CLUSTER_SIZE * 2 )) $(( CLUSTER_SIZE * 2 ))" \ + -c "read -P 0x22 $(( CLUSTER_SIZE * 4 )) $CLUSTER_SIZE" \ + -c "read -P 0x00 $(( CLUSTER_SIZE * 5 )) $CLUSTER_SIZE" \ + | _filter_qemu_io + +echo +echo "Verify that untouched cluster remains unallocated" +echo + +$QEMU_IMG map "$OVERLAY" | _filter_qemu_img_map + +echo + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/024.out b/tests/qemu-iotests/024.out index 245fe8b..e1e8eea 100644 --- a/tests/qemu-iotests/024.out +++ b/tests/qemu-iotests/024.out @@ -201,4 +201,47 @@ read 262144/262144 bytes at offset 0 read 65536/65536 bytes at offset 262144 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +=== Test rebase with different cluster sizes === + +Creating backing chain + +Formatting 'TEST_DIR/subdir/t.IMGFMT.base_new', fmt=IMGFMT size=393216 +Formatting 'TEST_DIR/subdir/t.IMGFMT.base_old', fmt=IMGFMT size=393216 backing_file=TEST_DIR/subdir/t.IMGFMT.base_new backing_fmt=IMGFMT +Formatting 'TEST_DIR/subdir/t.IMGFMT', fmt=IMGFMT size=393216 backing_file=TEST_DIR/subdir/t.IMGFMT.base_old backing_fmt=IMGFMT +image: TEST_DIR/subdir/t.IMGFMT +file format: IMGFMT +virtual size: 384 KiB (393216 bytes) +cluster_size: 131072 +backing file: TEST_DIR/subdir/t.IMGFMT.base_old +backing file format: IMGFMT + +Fill backing files with data + +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 262144 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +Rebase onto another image in the same chain + +Verify that data is read the same before and after rebase + +read 65536/65536 bytes at offset 0 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 65536/65536 bytes at offset 65536 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 131072/131072 bytes at offset 131072 +128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 65536/65536 bytes at offset 262144 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 65536/65536 bytes at offset 327680 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +Verify that untouched cluster remains unallocated + +Offset Length File +0 0x20000 TEST_DIR/subdir/t.IMGFMT +0x40000 0x20000 TEST_DIR/subdir/t.IMGFMT + *** done diff --git a/tests/qemu-iotests/271 b/tests/qemu-iotests/271 index c7c2cad..e243f57 100755 --- a/tests/qemu-iotests/271 +++ b/tests/qemu-iotests/271 @@ -899,6 +899,72 @@ _concurrent_io | $QEMU_IO | _filter_qemu_io | \ sed -e 's/\(20480\|40960\)/OFFSET/' _concurrent_verify | $QEMU_IO | _filter_qemu_io +############################################################ +############################################################ +############################################################ + +echo +echo "### Rebase of qcow2 images with subclusters ###" +echo + +l2_offset=$((0x400000)) + +# Check that rebase operation preserve holes between allocated subclusters +# within one cluster (i.e. does not allocate extra space). Check that the +# data is preserved as well. +# +# Base (new backing): -- -- -- ... -- -- -- +# Mid (old backing): -- 11 -- ... -- 22 -- +# Top: -- -- -- ... -- -- -- + +echo "### Preservation of unallocated holes after rebase ###" +echo + +echo "# create backing chain" +echo + +TEST_IMG="$TEST_IMG.base" _make_test_img -o cluster_size=1M,extended_l2=on 1M +TEST_IMG="$TEST_IMG.mid" _make_test_img -o cluster_size=1M,extended_l2=on \ + -b "$TEST_IMG.base" -F qcow2 1M +TEST_IMG="$TEST_IMG.top" _make_test_img -o cluster_size=1M,extended_l2=on \ + -b "$TEST_IMG.mid" -F qcow2 1M + +echo +echo "# fill old backing with data (separate subclusters within cluster)" +echo + +$QEMU_IO -c "write -P 0x11 32k 32k" \ + -c "write -P 0x22 $(( 30 * 32 ))k 32k" \ + "$TEST_IMG.mid" | _filter_qemu_io + +echo +echo "# rebase topmost image onto the new backing" +echo + +$QEMU_IMG rebase -b "$TEST_IMG.base" -F qcow2 "$TEST_IMG.top" + +echo "# verify that data is read the same before and after rebase" +echo + +$QEMU_IO -c "read -P 0x00 0 32k" \ + -c "read -P 0x11 32k 32k" \ + -c "read -P 0x00 64k $(( 28 * 32 ))k" \ + -c "read -P 0x22 $(( 30 * 32 ))k 32k" \ + -c "read -P 0x00 $(( 31 * 32 ))k 32k" \ + "$TEST_IMG.top" | _filter_qemu_io + +echo +echo "# verify that only selected subclusters remain allocated" +echo + +$QEMU_IMG map "$TEST_IMG.top" | _filter_testdir + +echo +echo "# verify image bitmap" +echo + +TEST_IMG="$TEST_IMG.top" alloc="1 30" zero="" _verify_l2_bitmap 0 + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/271.out b/tests/qemu-iotests/271.out index 5be780d..c335a6c 100644 --- a/tests/qemu-iotests/271.out +++ b/tests/qemu-iotests/271.out @@ -723,4 +723,46 @@ wrote 2048/2048 bytes at offset OFFSET 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset OFFSET 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +### Rebase of qcow2 images with subclusters ### + +### Preservation of unallocated holes after rebase ### + +# create backing chain + +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=1048576 +Formatting 'TEST_DIR/t.IMGFMT.mid', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT +Formatting 'TEST_DIR/t.IMGFMT.top', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.mid backing_fmt=IMGFMT + +# fill old backing with data (separate subclusters within cluster) + +wrote 32768/32768 bytes at offset 32768 +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 32768/32768 bytes at offset 983040 +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +# rebase topmost image onto the new backing + +# verify that data is read the same before and after rebase + +read 32768/32768 bytes at offset 0 +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 32768/32768 bytes at offset 32768 +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 917504/917504 bytes at offset 65536 +896 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 32768/32768 bytes at offset 983040 +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 32768/32768 bytes at offset 1015808 +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +# verify that only selected subclusters remain allocated + +Offset Length Mapped to File +0x8000 0x8000 0x508000 TEST_DIR/t.qcow2.top +0xf0000 0x8000 0x5f0000 TEST_DIR/t.qcow2.top + +# verify image bitmap + +L2 entry #0: 0x8000000000500000 0000000040000002 *** done |