Re: [Qemu-devel] [Qemu-block] [PATCH v4 0/3] iotests: Fix test 162

[Max Reitz <mreitz@redhat.com>]

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On 12.10.2016 10:55, Hao QingFeng wrote:
> Max,
> 
> Just a common question for this case, if sshx block driver wasn't built
> into qemu-img, this case would fail as below:

Good point, and thanks for bringing it up, but it's not directly linked
to this series other than by its subject, of course, so I'd rather add a
fix on top.

> exec /home/haoqf/KVMonz/qemu/tests/qemu-iotests/../../qemu-img info
> --image-opts driver=ssh,host=localhost,port=0.42,path=/foo
> qemu-img: Could not open
> 'driver=ssh,host=localhost,port=0.42,path=/foo': Unknown driver 'ssh'
> 
> Adding 162.notrun can bypass this case but it would skip it even if
> qemu-img has sshx block driver, in which case I think it should be run.
> 
> So How about adding a script to dynamically check at runtime if the
> current env qemu-img can meet the requirement to run the test or not?

Unfortunately, the list of block drivers listed by will not contain ssh
if ssh is built as a module, which is possible.

This is a bug that should be fixed, but I'd rather do so in a separate
series from this one.

In any case, once it is fixed I'd rather just take the approach quorum
tests take already (e.g. test 081), which is something like:

test_ssh=$($QEMU_IMG --help | grep '^Supported formats:.* ssh\( \|$\)')
[ "$test_ssh" = "" ] && _notrun "ssh support required"

Max


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