[ternyk]

Hi,
I'm trying to import huge ebook collection (30GB) by a command line using calibredb.
The command I'm using is:
find . -type f| while read filename; do calibredb add -d -r --isbn "$filename%.*" "$filename"; done;
It's ok but veeery slow! After adding each of the files there is an output message:

0123456789 not found [my note: it's the isbn of the book]
Backing up metadata
Notifying calibre of the change

It seems that calibre is doing too much I want. I don't need backing up the database. Only just fast copying with adding the info to the databse. Is there any option to disable some internal processing when adding to the library?

(I've tried from GUI but it finished with error saying that the operation was aborted as it took too long - it was about 1 hour.)