Re: [Qemu-devel] [PATCH v5 15/15] test: add image streaming test cases

[Lucas Meneghel Rodrigues <lmr@redhat.com>]

On 01/13/2012 02:49 PM, Stefan Hajnoczi wrote:
> Hi Lucas,
> The Python script below verifies the image streaming feature.  It's
> built on the standard library "unittest" module, as well as QEMU's
> qmp.py module.  It spawns a qemu process and creates necessary disk
> image files.  The tests themselves issue QMP commands and check their
> result or wait for QMP events to be raised.
>
> I think this sort of test could be done with kvm-autotest but I don't
> see much usage of cmd_qmp() in client/tests/kvm/tests/.  I'm curious
> how you would approach this.  The high-level steps are:
>
> 1. Create a backing file.
> 2. Create a test QED image file using the backing file.
> 3. Issue "block_stream device=drive0" to the running VM.  This should
> return no value.
> 4. Wait for the BLOCK_JOB_COMPLETED QMP event and check its fields -
> they must contain expected values.
> 5. Ensure "query-block-job" does not show any active jobs anymore.
> 6. Use qemu-io's map command to verify that the image stays compact
> and isn't bloated with actual zero bytes (this is kind of unrelated to
> the rest of the test).
>
> The other test cases share much of the same building blocks as
> TestSingleDrive, so they are less interesting.
>
> Would it be possible to look at TestSingleDrive below and give a
> kvm-autotest equivalent?

Yes Stefan, sorry for the late reply. I was in FUDCon, therefore taking 
care of some Fedora related autotest stuff, but I'm putting on my todo 
list to create a KVM autotest equivalent of it.

Cheers,

Lucas