[Engine-devel] Question about Disk Hotplug

[Itamar Heim]

On 09/11/2013 11:27 AM, Roy Golan wrote:
> On Tue 10 Sep 2013 09:20:32 PM IDT, Gustavo Frederico Temple Pedrosa wrote:
>> Hi everyone,
>>
>> We proposed some changes in how to query if an operating system
>> supports hotplug, then Itamar suggested that disk hotplugging and NIC
>> hotplugging could be separated from each other. While it is pretty
>> clear how to put info about NIC hotplugging in the osinfo, here are a
>> few issues when trying to introduce the same concept for disk
>> hotplugging.
>>
>> Some disk interfaces do not support hotplugging at all (like IDE),
>> some of them support it in the x86_64, but not in the ppc64
>> architecture (like the VirtIO blk) and others support it in both
>> architectures (like VirtIO SCSI). There is also a ppc64 specific
>> controller called SPAPR VSCSI, which supports it too.
>>
>> So, how do you propose a syntax to cover all these cases?
>>
>> I thought about something along the lines of:
>>
>> os.{id}.devices.disk.hotpluggableInterfaces = VirtIO_SCSI, VirtIO
>>
>> Thanks,
>>
>> Leonardo Bianconi/Vitor de Lima/Gustavo Pedrosa
>>
>
> "storage" is a better term than "disk" so:

why? this is about a vdisk, isn't it?

>
> os.{id}.devices.storage...
>
>
> maybe in the future we may expand the metadata model to hold devices and
> hook it to an OS
>
> device.{id}....
> os.{id}.devices={deviceId}
>
> just a thought, its unnecessary for now.
>
>
>
>
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