2013-11-13 12:00:10 +01:00
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QA output created by 073
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== creating backing file ==
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2014-12-09 08:38:03 +01:00
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Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728
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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>
2020-07-06 22:39:52 +02:00
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
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2013-11-13 12:00:10 +01:00
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wrote 134217728/134217728 bytes at offset 0
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128 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== normal -> unallocated ==
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wrote 65536/65536 bytes at offset 0
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 65536
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 0
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== normal -> compressed ==
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wrote 65536/65536 bytes at offset 131072
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 196608
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 131072
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== normal -> zero ==
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wrote 131072/131072 bytes at offset 262144
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 131072/131072 bytes at offset 262144
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 262144
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 327680
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 262144
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== unallocated -> normal ==
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wrote 65536/65536 bytes at offset 393216
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 458752
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 393216
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== unallocated -> compressed ==
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wrote 65536/65536 bytes at offset 524288
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 589824
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 524288
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== unallocated -> zero ==
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wrote 131072/131072 bytes at offset 655360
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 655360
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 720896
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 655360
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== compressed -> normal ==
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wrote 65536/65536 bytes at offset 786432
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 851968
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 786432
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== compressed -> unallocated ==
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wrote 65536/65536 bytes at offset 917504
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 983040
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 917504
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== compressed -> zero ==
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wrote 65536/65536 bytes at offset 1048576
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 1114112
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 1114112
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 1048576
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== zero -> normal ==
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wrote 65536/65536 bytes at offset 1179648
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 1245184
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 1179648
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 1179648
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== zero -> unallocated ==
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wrote 65536/65536 bytes at offset 1310720
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 1376256
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 1310720
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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== zero -> compressed ==
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wrote 65536/65536 bytes at offset 1507328
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 65536/65536 bytes at offset 1441792
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64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 131072/131072 bytes at offset 1441792
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128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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No errors were found on the image.
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*** done
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