On 13.10.2016 07:20, Hao QingFeng wrote:
> 在 2016-10-13 3:46, Max Reitz 写道:
>> 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.
> Thanks and sorry for sending to the improper mail series.
>>> 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.
> Actually I am not sure if I understood it. Do you mean
> "CONFIG_LIBSSH2=m" set
> rather than "CONFIG_LIBSSH2=y" in config-host.mak? But in the configure
> it's
> set to be "CONFIG_LIBSSH2=y":
> if test "$libssh2" = "yes" ; then
>   echo "CONFIG_LIBSSH2=y" >> $config_host_mak
>   echo "LIBSSH2_CFLAGS=$libssh2_cflags" >> $config_host_mak
>   echo "LIBSSH2_LIBS=$libssh2_libs" >> $config_host_mak
> fi

I don't know which version of qemu you are looking at, but on master it
says "m" instead of "y" there:


> Meanwhile I changed it to be "CONFIG_LIBSSH2=m" and reconfig, make the
> qemu,
> qemu-img --help can still prompt ssh.

Have you tried building master with --enable-modules specified for


>> 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"
> Cool. Agree with this like what was done in 081.  thanks
>> Max

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