Possible Duplicate:
What is the difference between the various ZODB blobstorage layouts?
I have a Plone 3.3.5 site that I'm migrating to plone.app.blob. I just ran a test-migration and noticed that all the blob files get stored in the same directory in var/blobstorage.
On the listservs I've heard it mentioned that it's possible to select between two layouts: "lawn" and "bushy". Lawn appears to be the default, with all files in a single, flat directory, while "bushy" organizes them into subfolders.
Is there a buildout option by which one can turn on the bushy layout? (I've not been able to find any examples of this.)
What are the strengths of each layout option?
The difference is explained in: What is the difference between the various ZODB blobstorage layouts?.
You don't need to worry about this; lawn is there only for backwards compatibility.
If you do have a lawn layout blobstorage (you'll get a warning in the log if you do) and want to migrate to a bushy layout, use the migrateblobs script; here is a buildout part to create the script:
[migrateblobs]
recipe = zc.recipe.egg
eggs = ZODB3
entry-points = migrateblobs=ZODB.scripts.migrateblobs:main
Shut down any instances and ZEO servers, back up your blob storage and run the script on your blobstorage directory:
$ mv var/blobstorage var/blobstorage-lawn
$ bin/migrateblobs var/blobstorage-lawn/ var/blobstorage
var/blobstorage has then been migrated to use the bushy layout.