QEMU allows and in cases where you omit the not-strictly-needed 'raw'
driver on top of raw images automatically uses the protocol name inside
of the 'backing file format' field of the qcow2 image.
Libvirt expects only format names in that field.
Add example images showing this scenario, which will be fixed later.
The qcow2 image files in this commit were formatted as:
qemu-img create -f qcow2 -F nbd -b nbd+tcp://example.org:6000/blah -u qcow2-protocol-backing-nbd.qcow2 10M
and
qemu-img create -f qcow2 -F file -b raw qcow2-protocol-backing-file.qcow2
thus using 'nbd' and 'file' as backing format respectively.
(note that '-b raw' refers to the file in the example image folder)
To satisfy the test, note that the NBD image is also rejected as we
can't probe it, thus such configuration would not work.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are important security implications when we'd misprobe those
images. This commit reinstates the tests removed by commit 979d1ba3ae
since 'qemu-img' refused to format them.
With the new testing approach with stored images we won't run into that
problem.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use prepared test images instead to simplify and clarify the code
instead of rewriting existing images multiple times.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to previous ones, this one doesn't need to be created by
qemu-img in order for the test to make sense.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The QED format isn't really being developed any more. Use a
pre-formatted image to test the existing code. In this instance we
switch to using a relative backing path for simplicity.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Provide the images for the self and mutual backing image loop cases in
the repository rather than formatting them with qemu-img.
This makes the code more readable and also decouples the backing chain
tests from each other.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
