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qemu-patch-raspberry4/tests/qemu-iotests/179.out
Eric Blake b66ff2c298 iotests: Specify explicit backing format where sensible 
There are many existing qcow2 images that specify a backing file but
no format.  This has been the source of CVEs in the past, but has
become more prominent of a problem now that libvirt has switched to
-blockdev.  With older -drive, at least the probing was always done by
qemu (so the only risk of a changed format between successive boots of
a guest was if qemu was upgraded and probed differently).  But with
newer -blockdev, libvirt must specify a format; if libvirt guesses raw
where the image was formatted, this results in data corruption visible
to the guest; conversely, if libvirt guesses qcow2 where qemu was
using raw, this can result in potential security holes, so modern
libvirt instead refuses to use images without explicit backing format.

The change in libvirt to reject images without explicit backing format
has pointed out that a number of tools have been far too reliant on
probing in the past.  It's time to set a better example in our own
iotests of properly setting this parameter.

iotest calls to create, rebase, and convert are all impacted to some
degree.  It's a bit annoying that we are inconsistent on command line
- while all of those accept -o backing_file=...,backing_fmt=..., the
shortcuts are different: create and rebase have -b and -F, while
convert has -B but no -F.  (amend has no shortcuts, but the previous
patch just deprecated the use of amend to change backing chains).

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200706203954.341758-9-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-07-14 15:18:59 +02:00

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QA output created by 179
=== Testing write zeroes with unmap ===
Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=67108864
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
wrote 2097152/2097152 bytes at offset 2097152
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 6291456
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
2 MiB (0x200000) bytes not allocated at offset 0 bytes (0x0)
2 MiB (0x200000) bytes allocated at offset 2 MiB (0x200000)
2 MiB (0x200000) bytes not allocated at offset 4 MiB (0x400000)
2 MiB (0x200000) bytes allocated at offset 6 MiB (0x600000)
56 MiB (0x3800000) bytes not allocated at offset 8 MiB (0x800000)
[{ "start": 0, "length": 67108864, "depth": 0, "zero": true, "data": false}]
wrote 2097150/2097150 bytes at offset 10485761
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097150/2097150 bytes at offset 14680065
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
2 MiB (0x200000) bytes not allocated at offset 0 bytes (0x0)
2 MiB (0x200000) bytes allocated at offset 2 MiB (0x200000)
2 MiB (0x200000) bytes not allocated at offset 4 MiB (0x400000)
2 MiB (0x200000) bytes allocated at offset 6 MiB (0x600000)
2 MiB (0x200000) bytes not allocated at offset 8 MiB (0x800000)
2 MiB (0x200000) bytes allocated at offset 10 MiB (0xa00000)
2 MiB (0x200000) bytes not allocated at offset 12 MiB (0xc00000)
2 MiB (0x200000) bytes allocated at offset 14 MiB (0xe00000)
48 MiB (0x3000000) bytes not allocated at offset 16 MiB (0x1000000)
[{ "start": 0, "length": 67108864, "depth": 0, "zero": true, "data": false}]
wrote 14680064/14680064 bytes at offset 18874368
14 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 20971520
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 6291456/6291456 bytes at offset 25165824
6 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
2 MiB (0x200000) bytes not allocated at offset 0 bytes (0x0)
2 MiB (0x200000) bytes allocated at offset 2 MiB (0x200000)
2 MiB (0x200000) bytes not allocated at offset 4 MiB (0x400000)
2 MiB (0x200000) bytes allocated at offset 6 MiB (0x600000)
2 MiB (0x200000) bytes not allocated at offset 8 MiB (0x800000)
2 MiB (0x200000) bytes allocated at offset 10 MiB (0xa00000)
2 MiB (0x200000) bytes not allocated at offset 12 MiB (0xc00000)
2 MiB (0x200000) bytes allocated at offset 14 MiB (0xe00000)
2 MiB (0x200000) bytes not allocated at offset 16 MiB (0x1000000)
14 MiB (0xe00000) bytes allocated at offset 18 MiB (0x1200000)
32 MiB (0x2000000) bytes not allocated at offset 32 MiB (0x2000000)
[{ "start": 0, "length": 18874368, "depth": 0, "zero": true, "data": false},
{ "start": 18874368, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 20971520, "length": 2097152, "depth": 0, "zero": true, "data": false},
{ "start": 23068672, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 25165824, "length": 6291456, "depth": 0, "zero": true, "data": false, "offset": OFFSET},
{ "start": 31457280, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 33554432, "length": 33554432, "depth": 0, "zero": true, "data": false}]
wrote 2097152/2097152 bytes at offset 27262976
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 29360128
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
2 MiB (0x200000) bytes not allocated at offset 0 bytes (0x0)
2 MiB (0x200000) bytes allocated at offset 2 MiB (0x200000)
2 MiB (0x200000) bytes not allocated at offset 4 MiB (0x400000)
2 MiB (0x200000) bytes allocated at offset 6 MiB (0x600000)
2 MiB (0x200000) bytes not allocated at offset 8 MiB (0x800000)
2 MiB (0x200000) bytes allocated at offset 10 MiB (0xa00000)
2 MiB (0x200000) bytes not allocated at offset 12 MiB (0xc00000)
2 MiB (0x200000) bytes allocated at offset 14 MiB (0xe00000)
2 MiB (0x200000) bytes not allocated at offset 16 MiB (0x1000000)
14 MiB (0xe00000) bytes allocated at offset 18 MiB (0x1200000)
32 MiB (0x2000000) bytes not allocated at offset 32 MiB (0x2000000)
[{ "start": 0, "length": 18874368, "depth": 0, "zero": true, "data": false},
{ "start": 18874368, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 20971520, "length": 2097152, "depth": 0, "zero": true, "data": false},
{ "start": 23068672, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 25165824, "length": 2097152, "depth": 0, "zero": true, "data": false, "offset": OFFSET},
{ "start": 27262976, "length": 2097152, "depth": 0, "zero": true, "data": false},
{ "start": 29360128, "length": 2097152, "depth": 0, "zero": true, "data": false, "offset": OFFSET},
{ "start": 31457280, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 33554432, "length": 33554432, "depth": 0, "zero": true, "data": false}]
wrote 8388608/8388608 bytes at offset 33554432
8 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 35651584
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 37748736
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
2 MiB (0x200000) bytes not allocated at offset 0 bytes (0x0)
2 MiB (0x200000) bytes allocated at offset 2 MiB (0x200000)
2 MiB (0x200000) bytes not allocated at offset 4 MiB (0x400000)
2 MiB (0x200000) bytes allocated at offset 6 MiB (0x600000)
2 MiB (0x200000) bytes not allocated at offset 8 MiB (0x800000)
2 MiB (0x200000) bytes allocated at offset 10 MiB (0xa00000)
2 MiB (0x200000) bytes not allocated at offset 12 MiB (0xc00000)
2 MiB (0x200000) bytes allocated at offset 14 MiB (0xe00000)
2 MiB (0x200000) bytes not allocated at offset 16 MiB (0x1000000)
22 MiB (0x1600000) bytes allocated at offset 18 MiB (0x1200000)
24 MiB (0x1800000) bytes not allocated at offset 40 MiB (0x2800000)
[{ "start": 0, "length": 18874368, "depth": 0, "zero": true, "data": false},
{ "start": 18874368, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 20971520, "length": 2097152, "depth": 0, "zero": true, "data": false},
{ "start": 23068672, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 25165824, "length": 2097152, "depth": 0, "zero": true, "data": false, "offset": OFFSET},
{ "start": 27262976, "length": 2097152, "depth": 0, "zero": true, "data": false},
{ "start": 29360128, "length": 2097152, "depth": 0, "zero": true, "data": false, "offset": OFFSET},
{ "start": 31457280, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},
{ "start": 33554432, "length": 33554432, "depth": 0, "zero": true, "data": false}]
wrote 8388608/8388608 bytes at offset 41943040
8 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 8388608/8388608 bytes at offset 50331648
8 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 44040192
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 46137344
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 52428800
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 54525952
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 60817408
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 62914560
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
42 MiB (0x2a00000) bytes not allocated at offset 0 bytes (0x0)
4 MiB (0x400000) bytes allocated at offset 42 MiB (0x2a00000)
4 MiB (0x400000) bytes not allocated at offset 46 MiB (0x2e00000)
4 MiB (0x400000) bytes allocated at offset 50 MiB (0x3200000)
4 MiB (0x400000) bytes not allocated at offset 54 MiB (0x3600000)
4 MiB (0x400000) bytes allocated at offset 58 MiB (0x3a00000)
2 MiB (0x200000) bytes not allocated at offset 62 MiB (0x3e00000)
[{ "start": 0, "length": 18874368, "depth": 1, "zero": true, "data": false},
{ "start": 18874368, "length": 2097152, "depth": 1, "zero": false, "data": true, "offset": OFFSET},
{ "start": 20971520, "length": 2097152, "depth": 1, "zero": true, "data": false},
{ "start": 23068672, "length": 2097152, "depth": 1, "zero": false, "data": true, "offset": OFFSET},
{ "start": 25165824, "length": 2097152, "depth": 1, "zero": true, "data": false, "offset": OFFSET},
{ "start": 27262976, "length": 2097152, "depth": 1, "zero": true, "data": false},
{ "start": 29360128, "length": 2097152, "depth": 1, "zero": true, "data": false, "offset": OFFSET},
{ "start": 31457280, "length": 2097152, "depth": 1, "zero": false, "data": true, "offset": OFFSET},
{ "start": 33554432, "length": 10485760, "depth": 1, "zero": true, "data": false},
{ "start": 44040192, "length": 4194304, "depth": 0, "zero": true, "data": false},
{ "start": 48234496, "length": 2097152, "depth": 1, "zero": true, "data": false},
{ "start": 50331648, "length": 2097152, "depth": 1, "zero": false, "data": true, "offset": OFFSET},
{ "start": 52428800, "length": 4194304, "depth": 0, "zero": true, "data": false},
{ "start": 56623104, "length": 2097152, "depth": 1, "zero": false, "data": true, "offset": OFFSET},
{ "start": 58720256, "length": 2097152, "depth": 1, "zero": true, "data": false},
{ "start": 60817408, "length": 4194304, "depth": 0, "zero": true, "data": false},
{ "start": 65011712, "length": 2097152, "depth": 1, "zero": true, "data": false}]
No errors were found on the image.
No errors were found on the image.
=== Testing cache optimization ===
wrote 2097152/2097152 bytes at offset 20971520
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 20971520
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 2097152/2097152 bytes at offset 29360128
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
*** done
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