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qemu-img: Require -F with -b backing image

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Back in commit d9f059aa6c (qemu-img: Deprecate use of -b without -F),
we deprecated the ability to create a file with a backing image that
requires qemu to perform format probing.  Qemu can still probe older
files for backwards compatibility, but it is time to finish off the
ability to create such images, due to the potential security risk they
present.  Update a couple of iotests affected by the change.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210503213600.569128-3-eblake@redhat.com>
Reviewed-by: Connor Kuehl <ckuehl@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Eric Blake 2021-05-03 14:36:00 -07:00 • committed by Kevin Wolf
parent 5a385bf5c5
commit 497a30dbb0
10 changed files with 56 additions and 85 deletions
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6
tests/qemu-iotests/041
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@ -1295,8 +1295,10 @@ class TestReplaces(iotests.QMPTestCase):
class TestFilters(iotests.QMPTestCase):
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M')
qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, test_img)
qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, target_img)
qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img,
'-F', iotests.imgfmt, test_img)
qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img,
'-F', iotests.imgfmt, target_img)
qemu_io('-c', 'write -P 1 0 512k', backing_img)
qemu_io('-c', 'write -P 2 512k 512k', test_img)