Re: [Qemu-devel] Design of the blobstore

[Stefan Berger <stefanb@linux.vnet.ibm.com>]

On 09/15/2011 01:47 AM, Gleb Natapov wrote:
> On Wed, Sep 14, 2011 at 01:05:44PM -0400, Stefan Berger wrote:
>>    One property of the blobstore is that it has a certain required
>> size for accommodating all blobs of device that want to store their
>> blobs onto. The assumption is that the size of these blobs is know
>> a-priori to the writer of the device code and all devices can
>> register their space requirements with the blobstore during device
>> initialization. Then gathering all the registered blobs' sizes plus
>> knowing the overhead of the layout of the data on the disk lets QEMU
>> calculate the total required (minimum) size that the image has to
>> have to accommodate all blobs in a particular blobstore.
>>
> I do not see the point of having one blobstore for all devices. Each
> should have its own. We will need permanent storage for UEFI firmware
> too and creating new UEFI config for each machine configuration is not
> the kind of usability we want to have.
>
You will have the possibility of storing all devices' state into one 
blobstore or each devices' state in its own or any combination in between.

    Stefan