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Stuart, when property protections are available in Havana, a provider can choose to make these immutable.  Or are you thinking that this is too important to leave up to provider configuration?

________________________________________
From: stuart.mclaren at hp.com [stuart.mclaren at hp.com]
Sent: Wednesday, August 07, 2013 5:13 AM
To: openstack-dev at lists.openstack.org
Subject: Re: [openstack-dev] [glance] Should image size/checksum be immutable for active images?

Typically its the not-very-interesting case of changing
the size from 0 to the real size after the data has uploaded.

That happens before the image state transitions to 'active'.



>
> Do u know what cases the 'size' or 'checksum' needs to be modified?
>
> I'd hope for immutability in these 2 things.
>
> On 8/6/13 10:39 AM, "Jay Pipes" <jaypipes at gmail.com> wrote:
>
>> On 08/06/2013 01:30 PM, stuart.mclaren at hp.com wrote:
>>> Hi,
>>>
>>> There are cases where an image's 'size' or 'checksum' values need to be
>>> modified before an image becomes active; but do we need, as I think we
>>> currently do, to allow users to change them once an image becomes
>>> active?
>>>
>>> Without the 'size' pinned down an operator can't necessarily trust the
>>> current value.
>>
>> Total agreement.
>>
>> -jay
>>

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