Quote:
Originally Posted by chaley
- the first half of an automatic 'backup' scheme. Calibre now writes an opf to the book directory whenever metadata changes. At some point a facility will be provided to rebuild the database from a library's folder hierarchy, using these OPF files. (Kovid)
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FYI, I'm seeing opf files only in records that have epub formats. Books with only .txt or .pdf don't get an opf, even if metadata changes. (As I've seen others report, all epubs have opfs, even if no change was made to metadata.) I saw no slowdown during the creation of the opf files. I assume this isn't a bug, just the current design.