[Opensim-dev] AssetServer Observations and Suggestions

[Melanie]

In a normal grid use scenario (OSGRID) I believe that most assets 
are _initially_ created by uploading them through the viewer. Even 
though they can be deleted, few people delete their textures, since 
they are always needed for further building. The savings would be 
minuscule, IMHO. Assets being implicitly shared, any textures passed 
to another user will link to the same inventory item, so that 
deleting something from one user's inventory doesn't mean that it is 
deleted from all users' inventories. There is no way to determine a 
reference but by scanning all inventories and all object assets.

Melanie

Justin Clark-Casey wrote:
> Melanie wrote:
>> All assets have, at some point, been on a user's inventory. There is 
>> no way to upload anything without having it in inventory at some point.
>> The largest assets are textures, and they will always pass through 
>> user inventories. Also, they will remain in user inventories despite 
>> _also_ being on region objects. Making regions hold their own assets 
>> authoritatively would cause massive data duplication, albeit 
>> distributed, and not really unclutter the central database.
> 
> Assets can be loaded via OAR and other mechanisms that never flow through inventory.  Also, I believe it's quite 
> possible to completely delete items from user inventory.
> 
>> 
>> I believe a tag and reap mechanism that slow-scans all assets for 
>> contained assets and all inventories for referencs and tags all 
>> referenced assets, as well as regions transmitting "asset lists" of 
>> assets currently referenced inworld, and the last use flag. Let that 
>> run for 6 months, then reap all unflagged, reset all flags, and 
>> start a new cycle.
>> 
>> This doesn't have to be mutually exclusive, in fact it can be 
>> combined with persistent local asset caching (e.g. local texture 
>> storage for inworld objects) as well as a HG model.
>> 
>> Melanie
>> 
>> Diva Canto wrote:
>>> Diva Canto wrote:
>>>> Justin Clark-Casey wrote:
>>>>   
>>>>> An even more radical solution would be to switch osgrid to a pure Hypergrid model.  The osgrid UAI services could still 
>>>>> act as the home services for many people who don't want to run their own regions, but the responsibilty for maintaining 
>>>>> region-side assets would shift to other OpenSim instances (and some people would also use them for their home services 
>>>>> instead of osgrid).
>>>>>
>>>>>   
>>>>>     
>>>> I've been thinking about this too. I think it should be possible, 
>>>> although we need to rethink a little bit the association between users 
>>>> and UGAIM servers. Right now it's sort of bundled; we need to unbundle. 
>>>> We could make an interface for the User server that would allow users to 
>>>> set their servers.
>>>>   
>>> Actually, we don't even need to change the user base data. The inventory 
>>> assets are only a [relatively small?] percentage of all the assets in 
>>> the grid asset server. Most of the assets, I would say, are inworld 
>>> things that aren't on any inventory. They are on the "region's 
>>> inventory" so to speak. So we could move all regions into HG mode, 
>>> setting the proper local servers in their OpenSim.ini's. The users 
>>> inventory would still be OSGrid's Inventory server.
>>>
>>> Even so, there are a few things that need changing/improving for this to 
>>> happen. But it's not that far out.
>>>
>>>
>>>
>>>
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