Hi, I have been doing some testing with blobstorage and relstorage. My use case is Plone 3.3.5 on Zope 2.10.11 with plone.app.blob 1.3 and ZODB 3.8.6-polling (so 3.8.6 with the patches for relstorage), but my questions and remarks are probably valid for other zodb-use as well.
Starting with RelStorage 1.5.0a1 (or trunk) there is support for blobs in RelStorage. You have the option to either store the blobs on the file system (var/blobstorage) or store them in the relational database. With filestorage combined with blobstorage it seems you only have one option: you get a small Data.fs and a big var/blobstorage directory that contains the files. Question: can the blobs also be stored in the Data.fs (supposing you want that)? plone.app.blob has migration code to move existing Archetypes files and images to blobstorage: @@blob-file-migration and @@blob-image-migration. I successfully migrated a 100 MB filestorage without blobstorage to a setup of relstorage with blobstorage. Both possible routes (first to relstorage using zodbconvert, then to blobstorage or the other way around) worked. Question: if I start with filestorage plus a var/blobstorage directory, is it possible to migrate this to relstorage with blobs stored in the relational database? Posed more general: is there migration code that migrates blobs from a (relational) database to a var/blobstorage directory or the other way around? I can at least say that in my light testing so far, RelStorage 1.5.0a1 with blobs works fine, so thanks Shane! -- Maurits van Rees Programmer at Zest Software http://zestsoftware.nl Personal website http://maurits.vanrees.org/ _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev