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iotests/197: Fix for compat=0.10

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Writing zeroes to a qcow2 v2 images without a backing file results in an
unallocated cluster as of 61b3043965.  197 has a test for COR-ing a
cluster on an image without a backing file, which means that the data
will be zero, so now on a v2 image that cluster will just stay
unallocated, and so the test fails.  Just force compat=1.1 for that
particular case to enforce the cluster to get allocated.

Fixes: 61b3043965
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200727135237.1096841-1-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Max Reitz 2020-07-27 15:52:37 +02:00
parent 733dafe491
commit 1855536256
1 changed files with 3 additions and 1 deletions
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tests/qemu-iotests/197
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@ -112,7 +112,9 @@ echo
echo '=== Partial final cluster ==='
echo
_make_test_img 1024
# Force compat=1.1, because writing zeroes on a v2 image without a
# backing file would just result in an unallocated cluster
_make_test_img -o compat=1.1 1024
$QEMU_IO -f $IMGFMT -C -c 'read 0 1024' "$TEST_IMG" | _filter_qemu_io
$QEMU_IO -f $IMGFMT -c map "$TEST_IMG"
_check_test_img