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qemu/tests/qemu-iotests/244.out
Max Reitz 2ec7e8a946 iotests/244: Test preallocation for data-file-raw 
Three test cases:
(1) Adding a qcow2 (metadata) file to an existing data file, see whether
    we can read the existing data through the qcow2 image.
(2) Append data to the data file, grow the qcow2 image accordingly, see
    whether we can read the new data through the qcow2 image.
(3) At runtime, add a backing image to a freshly created qcow2 image
    with an external data file (with data-file-raw).  Reading data from
    the qcow2 image must return the same result as reading data from the
    data file, so everything in the backing image must be ignored.
    (This did not use to be the case, because without the L2 tables
    preallocated, all clusters would appear as unallocated, and so the
    qcow2 driver would fall through to the backing file.)

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210326145509.163455-3-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2021-03-30 13:02:11 +02:00

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QA output created by 244
=== Create and open image with external data file ===
With data file name in the image:
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data
No errors were found on the image.
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 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory
no file open, try 'help open'
Data file required, but without data file name in the image:
qemu-io: can't open device TEST_DIR/t.qcow2: 'data-file' is required for this image
no file open, try 'help open'
read 65536/65536 bytes at offset 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory
no file open, try 'help open'
Setting data-file for an image with internal data:
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
qemu-io: can't open device TEST_DIR/t.qcow2: 'data-file' can only be set for images with an external data file
no file open, try 'help open'
qemu-io: can't open device TEST_DIR/t.qcow2: Could not open 'inexistent': No such file or directory
no file open, try 'help open'
=== Conflicting features ===
Convert to compressed target with data file:
Formatting 'TEST_DIR/t.IMGFMT.src', fmt=IMGFMT size=67108864
wrote 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qemu-img: error while writing at byte 0: Operation not supported
Convert uncompressed, then write compressed data manually:
Images are identical.
write failed: Operation not supported
No errors were found on the image.
Take an internal snapshot:
qemu-img: Could not create snapshot 'test': -95 (Operation not supported)
No errors were found on the image.
=== Standalone image with external data file (efficient) ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data
qcow2 file size before I/O: 196616
wrote 4194304/4194304 bytes at offset 1048576
4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
discard 2097152/2097152 bytes at offset 2097152
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 3145728/3145728 bytes at offset 3145728
3 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
No errors were found on the image.
[{ "start": 0, "length": 1048576, "depth": 0, "zero": true, "data": false},
{ "start": 1048576, "length": 1048576, "depth": 0, "zero": false, "data": true, "offset": 1048576},
{ "start": 2097152, "length": 2097152, "depth": 0, "zero": true, "data": false},
{ "start": 4194304, "length": 1048576, "depth": 0, "zero": true, "data": false, "offset": 4194304},
{ "start": 5242880, "length": 61865984, "depth": 0, "zero": true, "data": false}]
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 4194304/4194304 bytes at offset 2097152
4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 4194304
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 5242880
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qcow2 file size after I/O: 327680
=== Standalone image with external data file (valid raw) ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data data_file_raw=on
qcow2 file size before I/O: 327680
wrote 4194304/4194304 bytes at offset 1048576
4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
discard 2097152/2097152 bytes at offset 2097152
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 3145728/3145728 bytes at offset 3145728
3 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
No errors were found on the image.
[{ "start": 0, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": 0},
{ "start": 2097152, "length": 2097152, "depth": 0, "zero": true, "data": false},
{ "start": 4194304, "length": 2097152, "depth": 0, "zero": true, "data": false, "offset": 4194304},
{ "start": 6291456, "length": 60817408, "depth": 0, "zero": false, "data": true, "offset": 6291456}]
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 4194304/4194304 bytes at offset 2097152
4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 3145728/3145728 bytes at offset 3145728
3 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qcow2 file size after I/O: 327680
=== bdrv_co_block_status test for file and offset=0 ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data
wrote 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Offset Length Mapped to File
0 0x100000 0 TEST_DIR/t.qcow2.data
[{ "start": 0, "length": 1048576, "depth": 0, "zero": false, "data": true, "offset": 0},
{ "start": 1048576, "length": 66060288, "depth": 0, "zero": true, "data": false}]
=== Copy offloading ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data
Images are identical.
Images are identical.
=== Flushing should flush the data file ===
wrote 512/512 bytes at offset 0
512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Success: qemu-io failed, so the data file was flushed
=== Preallocation with data-file-raw ===
--- Using a non-zeroed data file ---
wrote 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "blockdev-create",
"arguments": {
"job-id": "create",
"options": {
"driver": "IMGFMT",
"size": 1048576,
"file": "meta",
"data-file": "data",
"data-file-raw": true
} } }
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "created", "id": "create"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "running", "id": "create"}}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "waiting", "id": "create"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "pending", "id": "create"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "concluded", "id": "create"}}
{ "execute": "job-dismiss", "arguments": { "id": "create" } }
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "null", "id": "create"}}
{"return": {}}
Comparing pattern:
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Images are identical.
--- Truncation (growing) ---
wrote 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Image resized.
Comparing pattern:
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Images are identical.
--- Giving a backing file at runtime ---
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 data_file=TEST_DIR/t.IMGFMT.data data_file_raw=on
Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=1048576
wrote 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Comparing qcow2 image and raw data file:
Images are identical.
*** done
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