On 01/10/2011 03:58 PM, Maurits van Rees wrote: > 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.
To clarify, blob support was in version 1.4, but the newest release gives you the option of where to put them. > 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)? Not that I know of. > 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? It should work, yes. You have to use different blob directories for the source and destination. > Posed more general: is there migration code that migrates blobs from a > (relational) database to a var/blobstorage directory or the other way > around? Yes, if you mean you want to copy the pickles as well, then zodbconvert should handle it. If you don't want to copy the pickles, I'm not sure. > I can at least say that in my light testing so far, RelStorage 1.5.0a1 > with blobs works fine, so thanks Shane! Thanks for testing. 1.5.0a1 seems to be quite stable, so unless any issue surfaces, it's going to turn into a final release really fast. Shane _______________________________________________ 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