[Opensim-users] What is the j2k cache folder used for

[tringate at gmail.com]

I have maintained what I call an assetcache-master file which is a composite of every asset record my servers have ever created.  As you can imagine it has grown in size to a rather significant number of assets over the many years I have been doing this.

The reason I do this is so I can use an offline instance of opensim and still rez objects that an NPC from years ago might have had attached to them.  Because my local instance is not connected to osgrid in any way, finding the item in asset cache has been a very successful way to be able to work with things offline.  My offline instance does not expire anything in assetcache.

I discovered that the j2k folder of the asset cache is nearly as large as the entire UUID folders combined.  Are these 1k files actually used for anything I would need?   Deleting them would save me an immense amount of space on my cache drive as each one of these 1k files take a 4k cluster.  There are nearly 2 million of them.

I have been working on an offline program that will pare down the UUID folders to only retain assets that the NPC appearances I have kept require as an attachment.  But none of the j2k files are used by an NPC.

Can I simply delete this entire folder from my master cache folder?