[ZODB-Dev] [Blobs] Rsyncing Data.fs/Blob files updated/replace upon object changes?

[Shane Hathaway]

On 05/06/2010 10:26 PM, Andreas Jung wrote:
> So: assuming that a persistent object is managed as a blob...what will
> happen on the filesystem level with the blob file upon a change to this
> object? Will the ZODB create a new blob file with the changed content or
> will it override/update the existing one?

The standard blob storage implementation creates a new file for each 
revision.  Old revisions are removed by packing.  It's quite safe to use 
rsync to back up a blob directory.

Shane