On 2/11/19 6:12 AM, Daniel P. Berrangé wrote:
> On Mon, Feb 11, 2019 at 06:10:38AM -0500, Laine Stump wrote:
>> On Mon, Feb 11, 2019, 5:47 AM Daniel P. Berrangé <berrange@xxxxxxxxxx>
>> wrote:
>>
>>> On Thu, Feb 07, 2019 at 10:08:28PM -0500, Laine Stump wrote:
>>>> RHEL8 has dropped support for qcow1 format images, so skip the tests
>>>> related to creating/cloning qcow1 images (based on the output of
>>>> qemu-img -help).
>>>>
>>>> Signed-off-by: Laine Stump <laine@xxxxxxxxx>
>>>> ---
>>>> scripts/storage/100-create-vol-dir.t | 22 ++++++++-----
>>>> scripts/storage/200-clone-vol-dir.t | 48 ++++++++++++++++------------
>>>> 2 files changed, 41 insertions(+), 29 deletions(-)
>>>
>>> Reviewed-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
>>>
>>>
>>> This is an example where libvirt storage pool capabilities would be
>>> useful.
>>>
Current working code I have (unreviewed) has:
<storagepoolCapabilities>
...
<pool type='fs' supported='yes'>
<poolOptions>
<defaultFormat type='auto'/>
<enum name='sourceFormatType'>
<value>auto</value>
<value>ext2</value>
<value>ext3</value>
<value>ext4</value>
<value>ufs</value>
<value>iso9660</value>
<value>udf</value>
<value>gfs</value>
<value>gfs2</value>
<value>vfat</value>
<value>hfs+</value>
<value>xfs</value>
<value>ocfs2</value>
</enum>
<enum name='requiredSourceElements'>
<value>device</value>
</enum>
</poolOptions>
<volOptions>
<defaultFormat type='raw'/>
<enum name='targetFormatType'>
<value>none</value>
<value>raw</value>
<value>dir</value>
<value>bochs</value>
<value>cloop</value>
<value>dmg</value>
<value>iso</value>
<value>vpc</value>
<value>vdi</value>
<value>fat</value>
<value>vhd</value>
<value>ploop</value>
<value>cow</value>
<value>qcow</value>
<value>qcow2</value>
<value>qed</value>
<value>vmdk</value>
</enum>
</volOptions>
</pool>
...
</storagepoolCapabilities>
>>
>> Yeah, or maybe listing the supported types in the device capabilities for
>> the disks. I had meant to point that out but forgot.
>
> We would need both, because QEMU has a setup where qemu-img can support a
> disk format while qemu-system-XXX will not support it. This is so that
> we can limit what is usable at runtime, but still have qemu-img for data
> liberation from old format images.
>
> Regards,
> Daniel
>
So, would this be something formatted from src/util/virstoragefile.c
FileTypeInfo for a specific $path then? Or more generically from
qemu-img like I assume this patch does? IIRC -help scraping has been
removed and the "hope" was some day some sort of capabilities type
approach would be used. Been a while since I've thought about it though.
John
